GE MDS LEDR400S-74 LEDR 400S Microwave Radio User Manual 3627C LEDR Body

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Document ID	162757
Application ID	pu6QtEhxV7VpPRmnQMb5vA==
Document Description	Operating Instructions Part 1 of 2
Short Term Confidential	No
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Document Type	User Manual
Display Format	Adobe Acrobat PDF - pdf
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Date Submitted	2001-08-02 00:00:00
Date Available	2001-09-27 00:00:00
Creation Date	2001-06-29 15:06:01
Producing Software	Acrobat Distiller 4.0 for Macintosh
Document Lastmod	2001-06-29 15:07:43
Document Title	3627C LEDR Body.book
Document Creator	FrameMaker 5.5
Document Author:	MDS Employee

LEDR 400S/F, 900S/F, 1400S/F Series
Including Protected (1+1) and Space Diversity Versions
P/N 05-3627A01, Rev. C
MARCH 2001
Installation and Operation Guide
LEDR DIGITAL
MICROWAVE RADIOS
QUICK START GUIDE
LEDR Series radios are supplied from the factory in matched pairs and will be configured to
user’s specifications. There are a few steps necessary to place the pair on-the-air communicating with each other. Once this is done, system-specific parameters will need to be reviewed
and changed to match your requirements. Below are the basic steps for installing the LEDR
radio. For a more detailed installation procedure, please see “INITIAL STARTUP AND CONFIGURATION” on page 24. When making cable connections, refer to Section 3.6, Rear Panel Connectors, on page 16 for a rear panel view of the radio.
1.
Install and connect the antenna system to the radio
• Ensure a path study has been conducted and that the radio path is acceptable.
• Use good quality, low loss coaxial cable. Keep the feedline as short as possible.
• Preset directional antennas in the direction of desired transmission/reception.
2.
Connect the data equipment to the rear panel data interface
• The data interface should be an RJ-45 connector for Fractional-T1, Fractional-E1, or E1, and DB-25
for EIA-530.
• Verify the customer premises data equipment is configured as DTE. (By default, the LEDR radio is
configured as DCE.)
3.
Apply DC power to the radio
• Verify that the line voltage matches the power supply input range (24 Vdc or 48 Vdc).
• The power connector is a three-pin keyed connector. The power source can be connected with
either polarity. The center conductor is not connected.
4. Change SUPER password and set up user access
• Login to Network Management System as SUPER, using password SUPER.
(See “login” on page 68.)
• Change the password using the PASSWD command. (See “passwd” on page 73)
• Set up required users, passwords and access levels using the USER command, as required.
(See “user” on page 86)
5.
Set the radio’s basic configuration using front panel or Console interface
• Set the transmit/receive frequencies (TX xxx.xxxx/RX xxx.xxxx) if they need to be changed from the
factory settings. (See “freq” on page 58.)
• Refer to this manual for other configuration settings.
6. Verify and set as necessary the following parameters to allow data throughput
and interconnection with the network.
•
•
•
•
RF transmit and receive frequencies. (See “freq” on page 58.)
Radio modulation type and data rate parameters. (See “modem” on page 72).
Data interface clocking. (See “clkmode” on page 54).
Data framing. (See “fstruct” on page 59).
The Quick Start Guide is continued on the rear cover of this manual.
TABLE OF CONTENTS
1.0 INTRODUCTION ......................................................................... 1
1.1 Product Description .......................................................................... 1
1.2 LEDR Features ................................................................................ 2
1.3 Typical Applications .......................................................................... 2
1.4 Protected Configuration ................................................................... 3
2.0 MODEL NUMBER CODES.......................................................... 4
3.0 HARDWARE INSTALLATION & BASIC INTERFACE
REQUIREMENTS ....................................................................... 7
3.1 Introduction ...................................................................................... 7
3.2 General Requirements ..................................................................... 7
Site Selection ................................................................................. 8
Terrain and Signal Strength............................................................ 8
On-the-Air Test ............................................................................... 9
A Word About Interference ............................................................. 9
3.3 Antenna and Feedline Selection .................................................... 10
Antennas ...................................................................................... 10
Feedlines...................................................................................... 11
3.4 Radio Mounting .............................................................................. 12
Maximizing RSSI .......................................................................... 13
Attaching the Rack Mounting Brackets......................................... 13
3.5 Front Panel ..................................................................................... 13
Indicators, Text Display and Navigation Keys ............................... 13
Connectors ................................................................................... 16
3.6 Rear Panel Connectors .................................................................. 16
Connector Locations .................................................................... 17
Ground Stud ................................................................................. 17
Antenna/TX—RF Connector ........................................................ 18
RX—RF Connector ...................................................................... 18
G.703/Expansion Data ................................................................. 18
Ethernet........................................................................................ 19
EIA-530-A..................................................................................... 19
Service Channel........................................................................... 19
Alarm I/O ...................................................................................... 20
DC Power Input (Primary Power) ................................................. 21
Protected Configuration Connections........................................... 22
3.7 Bandwidths, Data Rates and Modulation Types ............................. 22
3.8 Transmit Clock Selection (Subrate Radios Only) ........................... 23
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LEDR Series Installation & Operation Guide
4.0 INITIAL STARTUP AND CONFIGURATION .............................. 24
4.1
4.2
4.3
4.4
4.5
4.6
4.7
Introduction .................................................................................... 24
STEP 1—Power up the LEDR Radios ........................................... 24
STEP 2—Establish Communications with the Radio ..................... 25
STEP 3—Make Initial Login to Radio ............................................. 25
STEP 4—Change the SUPER Password ....................................... 26
STEP 5—Review Essential Operating Parameters ........................ 27
STEP 6—Set TCP/IP Settings to Enable SNMP and/or Telnet
Management (If required) .............................................................. 28
4.8 STEP 7—Set User Configurable Fields ......................................... 28
4.9 STEP 8—Verify Radio Performance .............................................. 28
4.10 STEP 9—Install the Link .............................................................. 28
4.11 STEP 10—Verify the Link Performance ....................................... 29
5.0 CONFIGURATION & CONTROL VIA THE FRONT PANEL....... 29
5.1 Front Panel LCD Menu Descriptions .............................................. 32
CONSOLE.................................................................................... 32
Default Screen.............................................................................. 32
Diagnostics................................................................................... 32
Front Panel ................................................................................... 33
G.821............................................................................................ 33
General......................................................................................... 34
IO Configuration ........................................................................... 35
Line Configuration ........................................................................ 36
Login............................................................................................. 38
Logout .......................................................................................... 38
Modem ......................................................................................... 38
Network ........................................................................................ 39
Orderwire...................................................................................... 40
Performance ................................................................................. 40
Redundant.................................................................................... 41
Remote Status.............................................................................. 42
RF Configuration .......................................................................... 42
6.0 CONFIGURATION & CONTROL VIA THE CONSOLE PORT .. 43
6.1
6.2
6.3
6.4
Introduction .................................................................................... 43
Initial Connection to the CONSOLE Port ....................................... 44
NMS Commands ............................................................................ 44
Command Detailed Descriptions ................................................... 47
Introduction................................................................................... 47
6.5 Disabling the Front Panel Alarm LED for Unused E1 Option
Ports .............................................................................................. 89
7.0 STANDARDIZING RADIO CONFIGURATIONS ........................ 90
7.1 Introduction .................................................................................... 90
7.2 Setup by TFTP ............................................................................... 91
Downloading Procedure ............................................................... 91
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LEDR Series Installation & Operation Guide
MDS 05-3627A01, Rev. C
Uploading Procedure.................................................................... 91
7.3 Setup Through the DB-9 CONSOLE Port ...................................... 92
8.0 UPGRADING LEDR FIRMWARE .............................................. 93
8.1 Introduction .................................................................................... 93
8.2 OPTION 1: Uploading Firmware via the CONSOLE Port ............... 94
Setup ............................................................................................ 94
Download Procedure.................................................................... 94
Verification and Reboot ................................................................ 95
8.3 OPTION 2: Uploading Firmware Locally by Telnet via Ethernet ..... 95
Setup ............................................................................................ 96
Download Procedure.................................................................... 96
Verification and Reboot ................................................................ 97
8.4 OPTION 3: Uploading Firmware from a Remote Server
via Ethernet .................................................................................. 97
Setup ............................................................................................ 97
Download Procedure.................................................................... 98
Verification and Reboot ................................................................ 99
9.0 USING ORDERWIRE ................................................................ 99
9.1
9.2
9.3
9.4
Introduction .................................................................................... 99
Setup .............................................................................................. 99
Operation .....................................................................................100
Related NMS Commands ............................................................101
10.0 USING THE SERVICE CHANNEL......................................... 101
10.1
10.2
10.3
10.4
Concept ......................................................................................101
Setup ..........................................................................................102
Usage .........................................................................................102
NMS Commands ........................................................................103
11.0 PROTECTED CONFIGURATION .......................................... 103
11.1 Introduction ................................................................................103
11.2 Protected Operation ...................................................................104
Transmitter Failure......................................................................105
Receiver Failure .........................................................................105
11.3 Configuration Options ................................................................105
1+1 Operation—Warm or Hot Standby ......................................105
Symmetrical or Asymmetrical Receiver Splitters........................106
11.4 PSC Rear Panel Connectors .....................................................106
RxA.............................................................................................106
RxB.............................................................................................106
Antenna ......................................................................................106
TxA .............................................................................................107
TxB .............................................................................................107
Protected (Data) .........................................................................107
E1 ...............................................................................................107
Ethernet......................................................................................107
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LEDR Series Installation & Operation Guide
iii
530 (A&B)...................................................................................107
EIA-530-A...................................................................................107
Service Channel.........................................................................107
11.5 Inter-Unit Cabling for Protected Stations ....................................108
11.6 Configuration Commands for a Protected System .....................108
Redundant Specific Parameters.................................................109
Sample Redundant Configuration Session ................................109
Transmit Clock Selection (Subrate Models Only) .......................110
12.0 SPACE DIVERSITY OPERATION ......................................... 112
12.1
12.2
12.3
12.4
Introduction ................................................................................112
User Interface & Control .............................................................112
Transmit Clock Selection ............................................................112
Inter-Unit Cabling for Space Diversity Stations ..........................113
13.0 SPARE PARTS, UNITS AND ACCESSORIES ...................... 115
13.1 Spares ........................................................................................115
13.2 Accessories ................................................................................116
14.0 Fractional-T1 INTERFACE CARD 03-3846A01
Fractional-E1 INTERFACE CARD 03-3846A02 ..................... 117
14.1 Introduction ................................................................................117
14.2 Fractional-T1/E1 Performance ...................................................117
14.3 Configurable Parameters ...........................................................117
Timeslots and Framing ...............................................................117
Line Codes .................................................................................118
Diagnostics.................................................................................118
Clocking......................................................................................119
14.4 Field Installation of the FT1 Interface Board ..............................119
15.0 INCREASE BANDWIDTH BY CHANGING TRANSMITTER &
RECEIVER FILTERS............................................................. 122
15.1 Introduction ................................................................................122
15.2 Filter Removal and Replacement ...............................................122
15.3 Software Commands ..................................................................124
16.0 BENCH TESTING OF RADIOS ............................................. 124
17.0 TECHNICAL REFERENCE ................................................... 125
17.1 Specifications—
Models: LEDR 400S, LEDR 900S & LEDR 1400S ..............................125
17.2 Specifications—
Models: LEDR 400F, 900F, 1400F ........................................................127
17.3 Specifications—
Protected Switch Chassis ....................................................................128
17.4 Optional Equipment (Consult factory for details) ........................128
17.5 Accessories ................................................................................129
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LEDR Series Installation & Operation Guide
MDS 05-3627A01, Rev. C
17.6 I/O Connector Pinout Information ...............................................129
Orderwire—Front Panel..............................................................129
CONSOLE Port—Front Panel ....................................................129
Ethernet—Rear Panel ................................................................130
EIA-530-A Data—Rear Panel.....................................................130
G.703 Data Connectors (4)—Rear Panel...................................130
Service Channel—Rear Panel ...................................................131
Alarm—Rear Panel ....................................................................131
17.7 Watts-dBm-Volts Conversion ......................................................132
18.0 RADIO EVENT CODES......................................................... 132
19.0 IN CASE OF DIFFICULTY ..................................................... 140
19.1 FACTORY TECHNICAL ASSISTANCE ......................................140
19.2 FACTORY REPAIRS ..................................................................140
Copyright Notice
This document and all software described herein are protected by copyright. Copyright 2001, Microwave Data Systems Inc. All rights
reserved. Trademarks held by other companies used in this publication
are acknowledged to be property of the holder.
Antenna Installation Warning
RF Exposure
1. All antenna installation and servicing is to be performed by
qualified technical personnel only. When servicing the antenna, or
working at distances closer than those listed below, ensure the
transmitter has been disabled.
2. Typically, the antenna connected to the transmitter is a directional
(high gain) antenna, fixed-mounted on the side or top of a building,
or on a tower. Depending upon the application and the gain of the
antenna, the total composite power could exceed 20 to 50 watts
EIRP. The antenna location should be such that only qualified technical personnel can access it, and that under normal operating conditions no other person can touch the antenna or approach within 2.68
meters of the antenna.
Antenna Gain vs. Recommended Safety Distance
(LEDR 400 Series)
Station Antenna Gain (LEDR 400 Series)
Minimum RF Safety
Distance
MDS 05-3627A01, Rev. C
0–5 dBi
5–10 dBi
10–20 dBi
20–30 dBi
0.15 meter
0.26 meter
0.85 meter
2.68 meters
LEDR Series Installation & Operation Guide
Antenna Gain vs. Recommended Safety Distance
(LEDR 900 Series)
Antenna Gain (LEDR 900 Series)
Minimum RF Safety
Distance
0–5 dBi
5–10 dBi
10–20 dBi
20–30 dBi
0.1 meter
0.17 meter
0.54 meter
1.71 meters
Antenna Gain vs. Recommended Safety Distance
(LEDR 1400 Series)
Antenna Gain (LEDR 1400 Series)
Minimum RF Safety
Distance
0–5 dBi
5–10 dBi
10–20 dBi
20–30 dBi
0.1 meter
0.13 meter
0.42 meter
1.32 meter
Accuracy of Documentation
While every reasonable effort has been made to ensure the accuracy of
this manual, product improvements may result in minor differences
between the manual and the product shipped to you. If you have additional questions or need an exact specification for a product, please contact our Technical Services group using the information at the back of
this guide. Microwave Data Systems reserves its right to correct any
errors and omissions. Updated information may also be available on our
Web site at www.microwavedata.com.
Distress Beacon Warning
In the U.S.A., the 406 to 406.1 MHz band is reserved for use by distress
beacons. Since the LEDR 400 radio is capable of transmitting in this
band, take precautions to prevent the radio from transmitting between
406 to 406.1 MHz.
RF Emissions
This equipment has been tested and found to comply with the limits for
a Class A digital device, pursuant to Part 15 of the FCC Rules or ETSI
specification ETS 300 385, as appropriate. These limits are designed to
provide reasonable protection against harmful interference when the
equipment is operated in a commercial environment. This equipment
generates, uses, and can radiate radio frequency energy and, if not
installed and used in accordance with the instruction manual, may cause
harmful interference to radio communications. Operation of this equipment in a residential area may to cause harmful interference in which
case the user will be required to correct the interference at his own
expense.
Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.
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LEDR Series Installation & Operation Guide
MDS 05-3627A01, Rev. C
1.0 INTRODUCTION
This manual is intended to help an experienced technician install, configure, and operate one of the digital radios in the MDS LEDR Series:
400S/F, 900S/F or 1400S/F. The manual begins with an overall description of product features and is followed by the steps required to mount
the radio and place it into normal operation.
After installation, we suggest keeping this guide near the radio for future
reference.
1.1 Product Description
The LEDR radio (Figure 1) is a full-duplex, point-to-point digital radio
operating in one of three radio frequency bands and at several bandwidths as summarized in Table 1.
Table 1. Key LEDR Radio Characteristics
MODEL(S)
BANDWIDTH(S)
FREQ. RANGE
INTERFACE
LEDR 400S
25/50/100/200 kHz
330-512 MHz
EIA-530
LEDR 400F
0.5/1/2 MHz
330-512 MHz
E1/G.703
LEDR 900S
25/50/100/200 kHz
800-960 MHz
EIA-530 or
FT1/G.703
LEDR 900F
0.5/1/2 MHz
800–960 MHz
E1/G.703
LEDR 1400S
25/50/100/200 kHz
1350–1535 MHz
EIA-530
LEDR 1400F
0.5/1/2 MHz
1350–1535 MHz
E1/G.703
With the addition of an optional Fractional-T1 Interface card, a
LEDR 900S Series radio can be connected to industry-standard G.703
T1 data interface equipment. See Page 117 for a complete description of
the Fractional-T1, Fractional-E1 and Full Rate E1 options.
All LEDR Series radios are available in a protected “1+1” configuration
(Figure 2). The protected configuration consists of two identical LEDR
radios and a Protected Switch Chassis. The protected configuration is
designed to perform automatic switchover to a secondary radio in the
event of a failure in the primary unit. See PROTECTED CONFIGURATION on Page 103 for detailed information on the protected version.
In addition, the LEDR Series is available in a space-diversity configuration to allow dual receive paths to improve system availability.
MDS 05-3627A01, Rev. C
LEDR Series Installation & Operation Guide
1.2 LEDR Features
•
General—Common to all models
• Network Management via SNMPc version 1
• Protected Operation (1+1) Compatible
• 1.0 Watt Transmit Power
• Space-Efficient Rack Size (1RU)
• Rugged, Reliable Design
• Voice Orderwire (DTMF compliant)
• Service Channel (Data)
•
Subrate Models—LEDR 400S/900S/1400S
• 64, 128, 256, 384, 512 and 768 kbps Data Rates
• 12 x 64 kbps Data Rate with the FT1 or FE1 Interface Board
(LEDR radio with optional PCB installed)
•
Fullrate Models—LEDR 400F/900F/1400F
• 1 x E1 to 4 x E1 data rates
Invisible place holder
Figure 1. The LEDR Digital Radio (Non-Protected Version)
1.3 Typical Applications
•
•
•
•
•
•
•
Point-to-point transmission applications
Cost-effective, “thin route” applications
Long haul telecommunications links
Cellular backhaul
Last-mile links
Trunked radio links
SCADA systems
LEDR Series Installation & Operation Guide
MDS 05-3627A01, Rev. C
1.4 Protected Configuration
A second configuration of the LEDR Series radios is the protected configuration in which two LEDR radios are monitored and controlled by a
third unit, the Protected Switch Chassis (PSC). The PSC provides a
gateway for data and radio frequency paths to the LEDR data radio
transceivers. Unit performance is continuously measured and should it
fall below user definable standards, the off-line LEDR radio will be
placed on-line and an alarm condition generated that can be remotely
monitored. Figure 2 shows a front view of the Protected version
arrangements. Details on the Protected Configuration hardware and
set-up can be found in Section 11.0 on page 103.
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Figure 2. LEDR Digital Radio (Protected Version)
MDS 05-3627A01, Rev. C
LEDR Series Installation & Operation Guide
2.0 MODEL NUMBER CODES
The radio model number is printed on the serial number label affixed to
the chassis. The following series of figures (Figure 3, Figure 4 and
Figure 5) show the significance of each character in the model number
strings. Contact the factory for specific information on optional configurations.
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INPUT VOLTAGE
1 = 24 Vdc
2 = 48 Vdc
DUPLEXER
N = None (Optional External) *
1 = 300–400 MHz *
2 = 400–520 MHz *
3 = 300–400 MHz; Protected @
4 = 400–520 MHz; Protected @
5 = 300–400 MHz; Space Diversity #
6 = 400–520 MHz; Space Diversity #
BANDWIDTH
A = 25 kHz *
B = 50 kHz *
C = 100 kHz *
D = 200 kHz *
E = 500 kHz @
F = 1 MHz @ %
G = 2 MHz @ %
* Only available with Modes N, 2
@Only available with Modes 3, 5
#Only available with Modes 6, 8
MODEL NUMBER CODES
ARE SUBJECT TO
CHANGE.
DO NOT USE FOR
ORDERING PRODUCTS.
CLASS
S =Subrate
F =Fullrate
% See Note 2
@Only available with Fullrate radios
* Only available with Subrate radios
REGULATORY
CERTIFICATION
N =Not Applicable
F =FCC/IC
LEDR 400
PROTECTED/STANDBY
N = None *
W= Warm @
H = Hot @
* With Modes N, 2
@ With Modes 3–8
MODES
N = None; EIA -530 *
1 = Not Used
2 = None; E1/Fractional-E1
3 = 1 + 1 EIA-530 *
4 = Not Used
5 = 1 + 1 E1/Fractional-E1
6 = Space Diversity EIA-530 *
7 = Not Used
8 = Space Diversity E1/Fract. E1
* Available in subrate radios
% Available in fullrate radios
RECEIVE FREQ.
1 = 330–380 MHz
2 = 380–400 MHz
3 = 400–462 MHz
4 = 462–512 MHz
See Notes 1 & 2
NOTES
RX SPLITTER
N = None *
A = Asymmetrical 1 dB /10 dB @
S = Symmetrical 3 dB @
* With Modes N, 2
@ With Modes 3–8
TRANSMIT FREQ.
A = 330–380 MHz
B = 380–400 MHz
C = 400–462 MHz
D = 462–512 MHz
See Notes 1 & 2
1.TX and RX frequencies are limited to the range of the
subband indicated in fields 10 and 11.
2.TX and RX frequency separation is 27 MHz (minimum)
for values of F & G.
Figure 3. LEDR 400 Series Model Number Codes
LEDR Series Installation & Operation Guide
MDS 05-3627A01, Rev. C
Invisible place holder
DUPLEXER
N = None (Optional External) *
1 = 9 MHz *
2 = 3.6 MHz (External) None *
3 = 760 MHz; None *
4 = 9 MHz; (Internal) Redundant @
5 = 3.6 MHz; (External) Redundant @
6 = 76 MHz; (Internal) Redundant @
7 = 9 MHz; (Internal) Space Diversity #
8 = 3.6 Mhz; (Internal) Space Diversity #
9 = 76 MHz; (Internal) Space Diversity #
INPUT VOLTAGE
1 = 24 Vdc
2 = 48 Vdc
BANDWIDTH
A = 25 kHz *%
B = 50 kHz *%
C = 100 kHz *%
D = 200 kHz%
E = 500 kHz@
F = 1 MHz@
G = 2 MHz@
* Only available with Modes N, 1
@Only available with Modes 3, 4
#Only available with Modes 6, 7
MODEL NUMBER CODES
ARE SUBJECT TO
CHANGE.
DO NOT USE FOR
ORDERING PRODUCTS.
* = Not available with Modes 1, 4, 7
% = Only available in subrate radios
@ = Only available in fullrate radios
CLASS
S = Subrate
F = Fullrate
REGULATORY
CERTIFICATION
N =Not Applicable
F =FCC/IC
LEDR 900
PROTECTED/STANDBY
N = None *
W= Warm @
H = Hot @
* With Modes N, 2
@ With Modes 3–8
MODES
N = None; EIA-530*
1 = None; Fractional-T1*
2 = None; Fractional-E1%
3 = 1 + 1 EIA=530*
4 = 1 + 1 Fractional-T1*
5 = 1 + 1 Fractional-E1
6 = Space Diversity EIA-530
7 = Space Diversity T1
8 = Space Diversity; Fractional-E1
RECEIVE FREQ.
1 = 800–860 MHz
2 = 860–900 MHz
3 = 900–960 MHz
See Note 1
RX SPLITTER
N = None *
A = Asymmetrical 1 dB /10 dB @
S = Symmetrical 3 dB @
* With Modes N, 1
@With Modes 3–8
TRANSMIT FREQ.
A = 800–860 MHz
B = 860–900 MHz
C = 900–960 MHz
See Note 1
NOTES
1.TX and RX frequencies are limited to the range of the
subband indicated in fields 10 and 11.
* = Available in subrate radios
% = Available in fullrate radios
Figure 4. LEDR 900 Series Model Number Codes
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LEDR Series Installation & Operation Guide
Invisible place holder
INPUT VOLTAGE
1 = 24 Vdc
2 = 48 Vdc
DUPLEXER
N = None (Optional External) &
R = None (Wired for External) Redundant *
1 = Internal &
2 = Internal; Space Diversity %
BANDWIDTH
A = 25 kHz *
B = 50 kHz *
C = 100 kHz *
D = 200 kHz *
E = 500 kHz @
F = 1 MHz @
G = 2 MHz @
* Only available with Modes 3, 5
%Only available with Modes 6, 8
&Only available with Modes N, 2
MODEL NUMBER CODES
ARE SUBJECT TO
CHANGE.
DO NOT USE FOR
ORDERING PRODUCTS.
CLASS
S =Subrate
F =Fullrate
@Only available with Fullrate radios
* Only available with Subrate radios
LEDR 1400
MODES
N = None; EIA=530 *
1 = Not Used
2 = None; E1/ Fractional-E1
3 = 1 + 1 EIA-530 *
4 = Not Used
5 = 1 + 1 E1/ Fractional-E1
6 = Space Diversity EIA-530 *
7 = Not Used
8 = Space Divers. E1/Frac. E1
* Available in subrate radios
REGULATORY
CERTIFICATION
N =Not Applicable
E =ETS 300 630,
ETS 300 385,
MPT 1717
PROTECTED/STANDBY
N = None *
RX SPLITTER
W= Warm @
N = None *
H = Hot @
A = Asymmetrical 1 dB /10 dB @
S = Symmetrical 3 dB @
* With Modes N, 2
@With Modes 3–8
* With Modes N, 2
@With Modes 3–8
% Available in fullrate radios
Figure 5. LEDR 1400 Series Model Number Codes
LEDR Series Installation & Operation Guide
MDS 05-3627A01, Rev. C
3.0 HARDWARE INSTALLATION AND
BASIC INTERFACE
REQUIREMENTS
3.1 Introduction
Installation of the LEDR radio transceiver is not difficult, but it does
require some planning to ensure optimal efficiency and reliability. There
are two major installation objectives; first, obtain good radio communications between LEDR sites, and second, configure the data interface to
complement your data equipment.
This section provides information to assist you in successfully completing the first phase of installation. You will find tips for selecting an
appropriate site, choosing antennas and feedlines, minimizing the
chance of interference, and the basics of equipment installation. This
material should be reviewed before beginning the radio hardware equipment installation.
When the radio installation is successfully complete, you will need to
address the data interface and operational configuration of the LEDR
radio. It is likely that the radio has been configured by the factory to
meet your basic data interface requirements. Please review the factory
documentation accompanying your shipment for the radios current configuration.
What ever your situation, it is recommended you review the material in
the rest of the manual to gain insight to additional configuration options
and user functions.
3.2 General Requirements
There are four main requirements for installing the radio transceiver—a
suitable installation environment, adequate and stable primary power, a
good antenna system, and the correct interface between the transceiver
and the external data equipment. Figure 6 shows a typical station
arrangement.
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LEDR Series Installation & Operation Guide
Invisible place holder
DATA INTERFACE
GRID DISH
ANTENNA
TO DC
POWER SOURCE
(24 or 48 Vdc as appropriate)
LOW LOSS
COAXIAL CABLE
Figure 6. Typical Station Arrangement
Site Selection
For a successful installation, careful thought must be given to selecting
proper sites for the radios and antenna systems. Suitable sites should
offer:
• An antenna location that provides an unobstructed path in the
direction of the associated station
• A source of adequate and stable primary power
• Suitable entrances for antenna, interface or other required
cabling
• Adequate clearance around the radio for ventilation
These requirements can be quickly determined in most cases. A possible
exception is the first item—verifying that an unobstructed transmission
path exists. Microwave radio signals travel primarily by line-of-sight,
and obstructions between the sending and receiving stations will affect
system performance.
If you are not familiar with the effects of terrain and other obstructions
on radio transmission, the following discussion will provide helpful
background.
Terrain and Signal Strength
A line-of-sight path between stations is highly desirable, and provides
the most reliable communications link in all cases. A line-of-sight path
can often be achieved by mounting each station antenna on a tower or
other elevated structure that raises it to a level sufficient to clear surrounding terrain and other obstructions.
LEDR Series Installation & Operation Guide
MDS 05-3627A01, Rev. C
The requirement for a clear transmission path depends upon the distance
to be covered by the system. If the system is to cover only a limited distance, say 5 km (3.1 miles), then some obstructions in the transmission
path may be tolerable. For longer-range systems, any obstruction could
compromise the performance of the system, or block transmission
entirely.
The signal strength at the receiver must exceed the receiver sensitivity
by an amount known as the fade margin to provide reliable operation
under various conditions.
Detailed information on path planning should be reviewed before beginning an installation. Computer software is also available for this purpose
that can greatly simplify the steps involved in planning a path.
Microwave Data Systems offers path analysis (for paths in the USA) as
an engineering service. Contact the factory for additional information.
On-the-Air Test
If you’ve analyzed the proposed transmission path and feel that it is
acceptable, an on-the-air test of the equipment and path should be conducted. This not only verifies the path study results, but allows you to
see firsthand the factors involved at each installation site.
The test can be performed by installing a radio at each end of the proposed link and checking the Received Signal Strength Indication (RSSI)
value reported at the front panel LCD screen of each radio. If adequate
signal strength cannot be obtained, it may be necessary to mount the station antennas higher, use higher gain antennas, or select a different site
for one or both stations.
A Word About Interference
Interference is possible in any radio system. However, since the LEDR
radio is designed for use in a licensed system, interference is less likely
because frequency allocations are normally coordinated with consideration given to geographic location and existing operating frequencies.
The risk of interference can be further reduced through prudent system
design and configuration. Allow adequate separation between frequencies and radio systems.
C/I Curves
MDS 05-3627A01, Rev. C
A carrier to interference (C/I) curve can help in frequency and space
coordination. The information in this curve can aid greatly in helping
plan geographic locations and frequency usage for radio systems. Contact the factory for additional information on carrier to interference
curves. A white paper on the subject is available on request. Ask for
Publication No. 05-3638A01.
LEDR Series Installation & Operation Guide
Keep the following points in mind when setting up your point-to-point
system:
1. Systems installed in lightly populated areas are least likely to
encounter interference; those in urban and suburban environments
are more likely to be affected by other devices operating in the
radio’s frequency band and adjacent services.
2. Directional antennas must be used at each end of a point-to-point
link. They confine the transmission and reception pattern to a comparatively narrow beam, which minimizes interference to and from
stations located outside the pattern. The larger the antenna, the more
focused the transmission and reception pattern and the higher the
gain.
3. If interference is suspected from another system, it may be helpful
to use antenna polarization that is opposite to the interfering system’s antennas. An additional 20 dB (or more) of attenuation to
interference can be achieved by using opposite antenna polarization.
Refer to the antenna manufacturer’s instructions for details on
changing polarization.
3.3 Antenna and Feedline Selection
Antennas
The antenna system is perhaps the most crucial part of the system
design. An antenna system that uses poor quality feedline, or is improperly aligned with the companion site, will result in poor performance, or
no communication at all.
A directional antenna must be used for point-to-point systems to minimize interference both to and from nearby systems. In general, cylindrical or dish type antennas with a parabolic reflector must be used. Yagi
or corner reflector types may be acceptable in some applications. Check
government regulations for your region.
The exact style of antenna used depends on the size and layout of a
system. In most cases, a directional “dish” type of antenna is used with
the radio (Figure 7). Dish antennas maximize transmission efficiency
and restrict the radiation pattern to the desired transmission path.
10
LEDR Series Installation & Operation Guide
MDS 05-3627A01, Rev. C
Invisible place holder
Figure 7. Typical Grid Dish Antenna
Table 2 lists common grid dish antenna sizes and their approximate
gains. Note: Each antenna is designed to operate within only one frequency band.
Table 2. Dish antenna size versus gain (dBi)
Antenna Size
Meters (feet)
400 MHz
Gain
900 MHz
Gain
1400 MHz
Gain
1.2 meters
(4 feet)
13.1 dBi
18.4 dBi
23.7 dBi
2.0 meters
(6 feet)
16.3 dBi
22.0 dBi
26.1 dBi
3.0 meters
(10 feet)
19.6 dBi
26.4 dBi
30.6 dBi
4.0 meters
(12 feet)
22.2 dBi
28.0 dBi
32.1 dBi
MDS can furnish antennas for use with your LEDR radio. Consult your
sales representative for details.
Feedlines
For maximum performance, a good quality feedline must be used to
connect the radio transceiver to the antenna. For short-range transmission, or where very short lengths of cable are used (up to 8 meters/26
feet), an inexpensive coax cable such as Type RG-213 may be acceptable.
For longer cable runs, or for longer-range communication paths, we recommend using a low-loss cable suited for the frequency band of operation. Helical transmission lines, such as Andrew Heliax™ or other
high-quality cable will provide the lowest loss and should be used in
systems where every dB counts.
Whichever type of cable is used, it should be kept as short as possible to
minimize signal loss.
MDS 05-3627A01, Rev. C
LEDR Series Installation & Operation Guide
11
The following tables (3, 4 & 5) can be used to select an acceptable feedline. A table is provided for each of the three bands for which the LEDR
radios are available.
Table 3. Feedline Loss Table (450 MHz)
3.05 Meters
(10 Feet)
15.24 Meters
(50 Feet)
30.48 Meters
(100 Feet)
152.4 Meters
(500 Feet)
RG-8A/U
0.51 dB
2.53 dB
5.07 dB
25.35 dB
1/2 in. HELIAX
0.12 dB
0.76 dB
1.51 dB
7.55 dB
7/8 in. HELIAX
0.08 dB
0.42 dB
0.83 dB
4.15 dB
1-1/4 in. HELIAX
0.06 dB
0.31 dB
0.62 dB
3.10 dB
1-5/8 in. HELIAX
0.05 dB
0.26 dB
0.52 dB
2.60 dB
Cable Type
Table 4. Feedline Loss Table (960 MHz)
3.05 Meters
(10 Feet)
15.24 Meters
(50 Feet)
30.48 Meters
(100 Feet)
152.4 Meters
(500 Feet)
RG-8A/U
0.85 dB
4.27 dB
8.54 dB
42.70 dB
1/2 in. HELIAX
0.23 dB
1.15 dB
2.29 dB
11.45 dB
7/8 in. HELIAX
0.13 dB
0.64 dB
1.28 dB
6.40 dB
1-1/4 in. HELIAX
0.10 dB
0.48 dB
0.95 dB
4.75 dB
1-5/8 in. HELIAX
0.08 dB
0.40 dB
0.80 dB
4.00 dB
Cable Type
Table 5. Feedline Loss Table (1400 MHz)
8 Meters
(26 Feet)
15 Meters
(49 Feet)
30 Meters
(98 Feet)
61 Meters
(200 Feet)
RG-213
3.0 dB
6.03 dB
12.05 dB
24.1 dB
1/2 in. HELIAX
0.73 dB
1.47 dB
2.93 dB
5.9 dB
7/8 in. HELIAX
0.42 dB
0.83 dB
1.66 dB
3.32 dB
1-5/8 in. HELIAX
0.26 dB
0.26 dB
1.05 dB
2.1 dB
Cable Type
3.4 Radio Mounting
The radio can be mounted either in a 19-inch equipment rack or on a
table top. It should be located in a relatively clean, dust-free environment that allows easy access to the rear panel connectors as well as front
panel controls and indicators. Air must be allowed to pass freely over the
ventilation holes and heat sink on the side panel.
The dimensions of LEDR Series radios are:
• 305 mm (12 in) deep
• 426 mm (16.75 in) wide—Excluding rack mounting brackets
• 45 mm (1.75 in) high—1RU
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LEDR Series Installation & Operation Guide
MDS 05-3627A01, Rev. C
Maximizing RSSI
For newly installed systems, one of the first tasks is to orient the station
antenna for a maximum Received Signal Strength Indication (RSSI) as
shown on the LCD screen. See “Performance” on Page 40 for details. A
maximum RSSI ensures the antenna is properly aimed at the associated
station. Move the antenna slowly while an assistant observes the RSSI
display for a maximum reading.
Attaching the Rack Mounting Brackets
The radio is normally shipped with the rack mounting brackets uninstalled. To attach them, select the desired mounting position on the sides
of the chassis. (The brackets may be mounted flush with the front panel,
or near the middle of the chassis.)
NOTE: Both short and long screws are provided with the brackets. Use
the long screws for the heatsink (left) side of the chassis and
the short screws for the right side of the chassis. Tighten the
screws securely.
3.5 Front Panel
Indicators, Text Display and Navigation Keys
Figure 8 shows the details of the LEDR radio’s front panel indicators,
an LCD text display and a menu navigation keys.
LCD TEXT DISPLAY
STATUS LEDS
SCROLL MODE
INDICATOR SYMBOL
MENU NAVIGATION KEYS
ALARM STATUS LEDS
Figure 8. Front Panel Indicators, Text Display and keys
MDS 05-3627A01, Rev. C
LEDR Series Installation & Operation Guide
13
LED Indicators
The front panel LEDs indicate various operating conditions as outlined
in Table 6.
Table 6. Front Panel LED Functions
LCD Display
& Keys
LED
Indications
POWER
Primary power is applied to radio
ACTIVE
This radio is the on-line/active unit in a
redundant configuration.
ALARM
A general alarm condition is present
RX ALARM
The modem is not locked to a receive
signal
TX ALARM
There is a problem with the transmitter
I/O ALARM
There is a payload data interface error
The LCD display provides a two line by 16-character readout of radio
status and parameter settings. It is used with the menu navigation keys
on the right side of the front panel to control the radio’s operation and
access diagnostic information.
Use of the navigation keys (Figure 9) is simple, and allows many basic
operating tasks to be performed without connecting an external terminal
or using additional software.
Invisible place holder
Figure 9. Menu Navigation Keypad
The keys can be used for two tasks—navigating though menus, and
editing user controllable parameters. The functions of the keys are automatically selected according to the screen that is being viewed by the
user.
Menus
The LEDR radio contains 16 primary menus as listed below. These primary menus serve as entry points to a variety of submenus that can be
used to view or adjust operating parameters and diagnose the radio link.
•
•
•
•
•
•
•
14
Login
Logout
Network
General
RF Config(uration)
IO Config(uration)
Line Config(uration)
LEDR Series Installation & Operation Guide
•
•
•
•
•
•
•
Performance
G.821
Diagnostics
Orderwire
Front Panel
Redundant
Remote Status
MDS 05-3627A01, Rev. C
Detailed descriptions of each front panel LCD display is covered
in-depth later in this manual. For details, see Front Panel LCD Menu
Descriptions on Page 32.
Menu Navigation
The left and right keys (
) provide navigation through the available
top level menus (see menu tree, Figure 9) and through series of subordinate menus.
The ENTER key allows entry into each primary menu’s subordinate
key always exits the curmenus, exposing another menu level. The
rent screen, causing the program to “pop up” one level.
ESCAPE
Parameter Selection
and Data Entry
With an editable menu, such as Login, pressing the ENTER key puts the
screen into a data entry mode. Front panel keys are used in one of three
ways: A. character and string creation/selection, B. scrolling through
lists, and C. adjusting horizontal slider bars.
A. Character and String Creation/Selection— With some
menus, it is necessary to enter a string of alphanumeric characters. A good example is entering a password at the user login
menu. In this example, the string is built one character at a time,
and the string is built from left to right on the display.
The left and right arrow keys move the cursor in the corresponding direction. When the cursor is below the character you
wish to change, press ENTER . The arrow keys are then used to step
though the character set, beginning with numbers, next uppercase letters and finally lowercase letters. Each time you press
one of the arrow keys, the display will step to the next character.
If you press and hold the arrow key for several seconds, the characters will scroll by very quickly.
After you have built the string of characters you need, press the
ENTER key to save the string on the display and return to cursor
navigation mode. To save all changes you have made, place the
cursor under the special carriage return symbol ( ) and press
ENTER . Pressing
will revert the arrow keys to the cursor navigation mode. Pressing
in cursor navigation mode cancels
character edit mode without saving any changes.
ESCAPE
ESCAPE
B. Scrolling Lists/Values— Uses left and right keys (
) to
scroll through a list of choices or adjust a numeric value, such as
power output. When you are in a menu of with a series of fixed
parameters, the vertical scroll character ( ) will appear while
you are in the editing/selection mode. If you are asked to select
or change more than one character, you will see a horizontal
scroll symbol ( ) in the bottom right-hand corner of the display
and a cursor will appear under the character being edited or
changed.
MDS 05-3627A01, Rev. C
LEDR Series Installation & Operation Guide
15
When the desired parameter is in view, move the cursor to the
right as far as it will go, until a carriage return symbol ( )
appears. Pressing the ENTER key will save the selection to its left,
if your access privileges permit. Pressing
cancels the selection and exits without saving the change.
ESCAPE
C. Slider Bar Adjustment—Some menus display a horizontal
bar that changes its length to indicate the level for parameters
that use relative values such as the Orderwire Volume and VOX
threshold. (See VOX and O/W on Page 40.) Pressing the
key
will increase the value and the
will lower the value. Pressing
ENTER saves the current setting.
Connectors
The front panel of the LEDR radio (Figure 10) has two connectors; both
of them are located on the lefthand side of the panel.
Orderwire
The RJ-11 jack with the telephone symbol above it is to connect an
orderwire handset. The orderwire is used by service personnel to communicate through the Service Channel to coordinate system activities
with personnel at another site in the network. The orderwire will not
interrupt the normal data flow through the LEDR data communication
channel, however, it will reduce the throughput efficiency of any data
communications on the Service Channel during periods of voice transmission. See “USING ORDERWIRE” on Page 99 for more information.
CONSOLE
The second connector is a DB-9 type with a computer icon over it. Here
is where you can connect a computer’s serial port for unit configuration,
diagnostics and firmware upgrades to the radio.
Invisible place holder
CONSOLE
ORDERWIRE HANDSET (COMPUTER)
Figure 10. LEDR Front Panel
(All models Identical.)
3.6 Rear Panel Connectors
The rear panel of the LEDR radio transceiver contains a number of connectors to interface with the radio’s antenna system, data equipment,
and user remote data network monitoring and control equipment.
16
LEDR Series Installation & Operation Guide
MDS 05-3627A01, Rev. C
Connector Locations
LEDR “S” Series
The rear panel of the LEDR “S” Series radios is shown in Figure 11.
Refer to the descriptions that follow for specific information regarding
rear panel connections.
Invisible place holder
• Four RJ-45 connectors with FT1/FE1 Interface PCB installed
• Only one RJ-45 port is active based on selection. See “linename” command.
• DB-68 Connector for interface to Protected Switch Chassis
• If vacant, EIA-530 connector to right is the active data connector.
Power Plug
Detail (see text)
SERVICE CHANNEL
ETHERNET
RX
Antenna/TX
G.703/Expansion Data
External Duplexer
Ethernet
NMS
Service
Channel
EIA-530-A
Alarm I/O
DC Power Input
Data Interface
COOLING FAN
DC PRIMARY
POWER
DATA CONNECTOR
ANTENNA SYSTEM
CONNECTORS
GND
ALARM INPUT & OUTPUT
Note: RX Connector present with external duplexer only.
Figure 11. LEDR 400S/900S/1400S Rear Panels
(Shown with Optional FT1/FE1 Interface PCB Installed)
LEDR “F” Series
The rear panel of the LEDR “F” Series radios is shown in Figure 12.
Refer to the descriptions that follow for specific information regarding
rear panel connections.
Invisible place holder
Power Plug
Detail (see text)
• Four RJ-45 connectors
• DB-68 Connector for G.703 interface to Protected Switch Chassis.
SERVICE CHANNEL
ETHERNET
RX
Antenna/TX
G.703/Expansion Data
External Duplexer
Ethernet
NMS
EIA-530-A
Service
Channel
Alarm I/O
DC Power Input
Data Interface
COOLING FAN
DATA CONNECTOR
(Not functional on “F” models)
ANTENNA SYSTEM
CONNECTORS
DC PRIMARY
POWER
ALARM INPUT & OUTPUT
Note: RX Connector present with external duplexer only.
GND
Figure 12. LEDR 400F/900F/1400F Rear Panel
Ground Stud
The ground stud on the rear panel provides a point to tie the radio’s
chassis ground to earth ground for safety purposes.
MDS 05-3627A01, Rev. C
LEDR Series Installation & Operation Guide
17
Antenna/TX—RF Connector
The ANTENNA/TX connector is an N-type coaxial connector. When an
internal duplexer is installed, it serves as the connection point for the
station antenna. When an external duplexer is used, it acts as the transmitter RF output (TX) connector to the duplexer.
RX—RF Connector
The RX (receive) connector is an N-type coaxial connector. It is only
installed if the radio is supplied for use with an external duplexer. It carries receive signals (RX) from the duplexer to the LEDR radio’s
receiver.
When an external duplexer is used, ensure that the higher frequency
(transmit or receive) is connected to the duplexer connector marked HI
and the lower frequency (transmit or receive) is connected to the
duplexer marked LO.
G.703/Expansion Data
The type of connector(s) at this location on the rear panel depends on
several factors: the type of interface required by the customer premises
equipment (CPE) and whether or not the radio is part of a protected
(redundant) configuration. See Table 7 for details.
Table 7. G.703/Expansion Data Connector
Model(s)
Configuration
Data
Interface
G.703/Expansion
Connector
LEDR 400S
LEDR 900S
LEDR 1400S
Stand-alone
EIA-530
Blank. No connector(s)
installed.
LEDR 900S
Stand-alone
FT1
4 x RJ-45—Only one port is
active based on linename
selection. (See Note 2)
LEDR 400S
LEDR 900S
LEDR 1400S
Stand-alone
FE1
4 x RJ-45—Only one port is
active based on linename
selection. (See Note 2)
LEDR 400F
LEDR 900F
LEDR 1400F
Stand-alone
4E1
4 x RJ-45—All four jacks (A,
B, C & D) are active. (See
LEDR 400F/S
LEDR 900S
LEDR 1400F/S
Protected
Notes 1 & 2)
All
DB-68 (See Note 3)
NOTES:
1. The capacity of the 4E1 interface can be reduced to one (1E1) or two circuits (2E1).
See linemap command on Page 66, for configuration information.
2. For RJ-45 pinout information, see Figure 36 on Page 130.
3. This 68-pin interface connector is used only to pass the user data interface, the
Service Channel, and the orderwire circuits to the Protected Switch Chassis for
distribution. Fully-wired DB-68 computer cables (commonly used to interconnect
SCSI devices) can be used with this data port connector.
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LEDR Series Installation & Operation Guide
MDS 05-3627A01, Rev. C
Ethernet
The ETHERNET connector provides access to the embedded SNMP
agent and other elements of the TCP/IP network-management interface.
The connector is a standard 10Base-T connection with an RJ-45 modular connector. The LEDR Ethernet connections are provided for remote
equipment management (NMS).
Ethernet in
a Repeater
Configuration
At a repeater site with two LEDR radios, the ETHERNET connectors of
each chassis must be connected to each other through a cross-connect
cable or using standard cables to an Ethernet hub. This inter-chassis
Ethernet connection must be made in order for the Orderwire and Service Channel to function properly. (See Figure 13 on Page 20 for further
information.)
Ethernet in
a Protected
Configuration
The Ethernet connections on the LEDR radio chassis in a protected configuration should not be used. The Ethernet connector of the Protected
Switch Chassis (PSC) provides a connection to the two radio units. Each
radio has a unique IP address and is individually addressable/controllable using SNMP over IP. See “PROTECTED CONFIGURATION”
on Page 103 for general information and Figure 34 on Page 130 for
ETHERNET connector pinout.
EIA-530-A
The EIA-530-A connector is the main data input/output connector for
the subrate radio. The EIA-530 interface is a high-speed serial data connector. For detailed pin information, see “EIA-530-A Data—Rear
Panel” on Page 130.
NOTE: This connector is not operational on LEDR “F” Series (fullrate)
models.
Service Channel
The Service Channel provides a transparent ASCII “pipe” to which any
RS-232/EIA-232 device can be connected at data rates between 300 and
9600 bps. Whatever ASCII data is entered onto the network through the
Service Channel Port will be sent to the local radio and broadcast to any
other device connected to the Service Channel Port on other associated
LEDR radios in the network.
The Service Channel’s function is identical for all LEDR configurations—stand-alone, repeater, and redundant.
NOTE: Use of the orderwire will slow down data communications on
the Service Channel. It will not effect data traffic on the
primary data interface.
For detailed information on this 9-pin connector, see “Service
Channel—Rear Panel” on Page 131.
MDS 05-3627A01, Rev. C
LEDR Series Installation & Operation Guide
19
Data and RF cabling for the repeater station configuration is shown in
Figure 14.
Repeater
Configuration
TO DUPLEXER
OF ANTENNA SYSTEM A
(Radios with external duplexer)
TO ANTENNA SYSTEM A
(Radios with internal duplexers)
RADIO A
G.703/Expansion Data
RX
Ethernet
NMS
EIA-530-A
Service
Channel
Alarm I/O
DC Power Input
TX
External
Data Interface
EIA-530 NULL-MODEM
CROSSOVER CABLE
(Subrate Only)
P/N 97-2841L06 (6´/1.8 m)
UP TO 4 x G.703
CROSSOVER CABLES
(Fullrate only)
RADIO B
G.703/Expansion Data
RX
Ethernet
NMS
EIA-530-A
Service
Channel
Alarm I/O
DC Power Input
TX
External
Data Interface
TO ANTENNA SYSTEM B
(Radios with internal duplexers)
ETHERNET CROSSOVER CABLE
OR
SEPARATE CONNECTIONS TO HUB
(As Required)
TO DUPLEXER
OF ANTENNA SYSTEM B
(Radios with external duplexer)
Figure 13. Inter-unit Cabling—Repeater Configuration
The Service Channel connections on the LEDR radio chassis in a protected configuration should not be used. The SERVICE CHANNEL connector of the Protected Switch Chassis (PSC) provides a connection to
the two radio units. For further information on protected configurations
please see “PROTECTED CONFIGURATION” on Page 103.
Protected
Configuration
Alarm I/O
This is a 9-pin connector that has both inputs and outputs.
Output Contacts
The ALARMS Port is outfitted with four optically-isolated relays that are
controlled by the LEDR radio’s CPU. The contacts (Pins 6, 7, 8, & 9)
are normally open and can handle a non-inductive load of ±60 Volts
Peak (AC/DC) at a maximum current of 1 Ampere. These are suitable
for the control of an external device or indicator when a radio event
occurs.
An alarm output could be used, for example, to sound a claxon when the
radio link goes down, or when the battery for the real-time clock is low.
Another example is to use the alarm outputs to drive the inputs of an
external monitoring system. (See the list of radio events for more
options.) These outputs are not suitable for data interface without the use
of an external “debouncing” circuit.
20
LEDR Series Installation & Operation Guide
MDS 05-3627A01, Rev. C
Input Connections
In addition, four external alarm input lines (Pins 1, 2, 3 & 4) are provided. Normally, the input is either left open or shorted to ground, to
indicate an alarm condition.
Each alarm input is diode-clamped to +3.3 Vdc or chassis ground, and
can tolerate inputs from -4 to +6 Vdc without drawing excessive current.
If left open, each input is pulled up. To indicate an alarm condition, short
the input pin to the ground provided on the alarm connector (Pin 5). The
maximum DC loop resistance is 2 KΩ. These alarm input lines can tolerate circuit “bounce” common with mechanical relays.
NOTE: The normal (unalarmed) state of the contacts (open or closed)
or input alarm state (high or low) can be selected by a software
subcommand. See “alarm” on Page 49 for details.
Alarm Events
The events that cause alarm output signals can be configured in the radio
software. See “evmap” on Page 57 for information on programming
which events trigger an alarm.
See Figure 38 on Page 131 for Alarm I/O pinout information.
DC Power Input (Primary Power)
The DC POWER INPUT connector is a three-pin keyed connector used to
connect an external DC power source that will provide the unit’s primary power. The DC power source can be connected with the negative
lead connected to either the left or right pin of the chassis connector. The
center conductor is not connected within the LEDR chassis. A label next
to the connector will indicate the nominal voltage of the radio. Table 8
lists the actual operating voltage ranges.
Table 8. Primary Power Input Options
Nominal
Voltage
Operating Range
24 Vdc
19.2 to 28.8 Vdc
48 Vdc
38.4 to 57.6 Vdc
Refer to the model number codes in Figure 3 to determine the radio’s
power supply range.
CAUTION
POSSIPOSSIBLE
BLE
PMENT
EQUIEQUIPMENT
DAMAGDAMAGE
MDS 05-3627A01, Rev. C
Before connecting primary power to the radio, verify that the source
provides a voltage within the operating range. Improper voltages may
damage the equipment. Permissible voltage limits are shown in Table 8.
LEDR Series Installation & Operation Guide
21
Protected Configuration Connections
There are several connections between the LEDR radio chassis and the
Protected Switch Chassis. They include the primary data interface, RF,
Ethernet, orderwire and Service Channel. Details on cabling and other
items relating to the protected (redundant) configuration can be found in
PROTECTED CONFIGURATION on Page 103.
3.7 Bandwidths, Data Rates and Modulation Types
The hardware in the LEDR chassis is configured at the factory for a specific bandwidth. However, the modulation type and data rate can be
changed provided the bandwidth is sufficient to support the modulation
type and data rate. (If you need to change your radio’s bandwidth,
please see “INCREASE BANDWIDTH BY CHANGING TRANSMITTER AND RECEIVER FILTERS” on Page 122 for details.)
Use of the modem command (Page 72) and configuration ([argument])
code automatically sets the combination of data rate, bandwidth and
modulation type if the radio is capable of supporting it
Table 9 shows the combinations of radio bandwidth, data rates and modulation types that are available for subrate radios at the time of publication. Table 10 shows the combinations available for fullrate radios.
Table 9. Subrate Bandwidth vs. Modem Selection Code
Radio
Bandwidth
25 kHz
50 kHz
100 kHz
200 kHz
22
Configuration Code
Data Rate(s)
Modulation
B1
64 kbps
16-QAM
C1
64 kbps
32-QAM
A1
64 kbps
QPSK
B2
128 kbps
16-QAM
A1
64 kbps
QPSK
A2
128 kbps
QPSK
B3
256 kbps
16-QAM
A1
64 kbps
QPSK
A2
128 kbps
QPSK
B3
256 kbps
16-QAM
B4
384 kbps
16-QAM
B5
512 kbps
16-QAM
C6
768 kbps
32-QAM
LEDR Series Installation & Operation Guide
MDS 05-3627A01, Rev. C
Table 10. Fullrate Bandwidth vs. Modem Selection Code
Radio
Bandwidth
Configuration Code
Data
Rate(s)
Modulation
500 kHz
C7
E1
32-QAM
1000 kHz
B7
E1
16-QAM
C7
E1
32-QAM
C8
2E1
32-QAM
A7
E1
QPSK
B7
E1
16-QAM
B8
2E1
16-QAM
C8
2E1
32-QAM
C10
4E1
32-QAM
2000 kHz
3.8 Transmit Clock Selection (Subrate Radios Only)
For a subrate radio, transmit clock arrangement must be set by the user.
Clocking arrangements for fullrate radios is automatically handled by
the LEDR radios.
It is essential that there be only one master clock in a subrate radio network. The master clock can originate from the radio or from the Customer Premises Equipment (CPE).
LEDR radios are capable of several different clocking modes. Refer to
Figure 14 and Figure 24 for typical system clocking arrangements.
Refer to the Clock Mode screen description on Page 35 for setting the
radio transmit clocking from the front panel. Refer to the clkmode
description on Page 54 for setting the radio transmit clocking mode from
the front panel CONSOLE Port.
NOTE: When customer premises equipment (CPE) is operated in
looped clock mode, it is recommended that the radio not be set
to line clock mode. To do so may cause the transmitting
radio’s PLL to be pulled out-of-lock, especially when operating at 4E1 data rates.
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LEDR Series Installation & Operation Guide
23
SITE A
SITE B
CPE
Customer Premises
Equipment (CPE)
CPE
LEDR Radio
Clock Source
Over-the-Air RF Path
LEDR Radio
Clock Source
Customer Premises
Equipment (CPE)
Internal Clock
External Clock
Looped Clock
External Clock
External Clock
Internal Clock
Looped Clock
External Clock
Figure 14. EIA-530 Clocking Arrangements for
Protected (1+1) LEDR Radio Operation
4.0 INITIAL STARTUP AND
CONFIGURATION
4.1 Introduction
The radio is commonly configured to parameters provided by the customer at the time the order was placed. Even so, there are some parameters that must be reviewed and set during the installation. The
following steps summarize the initial set-up of a LEDR radio link. If this
is your first installation of a LEDR radio system, it is recommended the
equipment be setup on a test bench.
4.2 STEP 1—Power up the LEDR Radios
There is no primary power switch; simply connecting primary power to
the unit will start the radio operating. After a short self-test, a “default
screen” similar to the following appears on the radio’s LCD display:
LEDR Link
RSSI: -60 dBm
NOTE: The LEDR radio is normally keyed continuously, and the radio
will transmit whenever power is applied. Ensure there is a suitable load on the antenna connector before connecting power.
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LEDR Series Installation & Operation Guide
MDS 05-3627A01, Rev. C
4.3 STEP 2—Establish Communications with the
Radio
There are four different methods available to set radio parameters and
query the radio. They are:
• Front Panel—The front panel is intended to serve as a convenient user interface for local radio management. Most, but not
all, parameters and functions are accessible from the front
panel. (See “Front Panel LCD Menu Descriptions” on Page 32.)
• NMS (Network Management System)—The NMS is used via
a terminal connected to the front panel CONSOLE Port. It may
be used to configure and query every manageable radio parameter on a given network using the out-of-band Service Channel.
The Element Management System (EMS) may be used on the
local radio (login command) or through any remote radio in the
network using the rlogin command.
• Telnet—A standard network application protocol which provides a NMS-type interface to configure and query most radio
parameters.
• SNMP Network Management System—The SNMP agent
interface is optimized to fulfill the fault configuration, performance and user access requirements of the LEDR radio system.
A separate manual, P/N 05-3532A01 explains SNMP in more
detail.
4.4 STEP 3—Make Initial Login to Radio
When the radio is first powered up, it defaults to a read-only condition.
That is, the radio parameters may be viewed, but cannot be changed. To
enable changes to radio settings, a valid user name and password must
be entered.
When the radio is shipped from the factory, it is pre-programmed with
the following temporary login credentials:
Username:SUPER
Password:SUPER
NOTE: User names and passwords are case sensitive. Do not use punctuation mark characters. Use a maximum of eight characters.
Navigation Key
Method
To log in from the front panel using the temporary credentials, follow
these steps:
1. Go to the Login screen and press the front panel
Username screen appears with SUPER displayed.
MDS 05-3627A01, Rev. C
ENTER
LEDR Series Installation & Operation Guide
key. The
25
2. Press the ENTER key again to access the Password screen. Use the
arrow keys to scroll through the list of characters and individually
select the letters spelling out the word SUPER. Press ENTER after each
character selection. (For more information on character selection
using the navigation keys, see “INITIAL STARTUP AND CONFIGURATION” on Page 24.)
3. When all of the characters have been entered, press ENTER again. The
screen briefly displays Login Success and returns to the Login entry
screen.
The user may now access any of the screens shown in Figure 15 with
Administrator level privileges (the highest allowable user level).
CONSOLE Method
To login using a terminal connected to the front panel CONSOLE Port,
follow the steps below.
1. Connect a terminal data port or a PC’s serial port to the radio’s front
panel CONSOLE Port
2. Open an ANSI terminal program, such as HyperTerminal™ in the
Windows O/S. Press ENTER . The LEDR> prompt should appear on
the terminal’s display.
3. Enter login SUPER. The Password > prompt will appear.
4. Enter the password SUPER. The following response appears: login:
SUPER logged in.
The user may now access any of the NMS commands listed in Table 14
on Page 44 with Administrator level privileges (the highest allowable
user level).
4.5 STEP 4—Change the SUPER Password
The factory-programmed username and password (SUPER) is provided
to enable a System Administrator to operate a newly installed radio. It
is highly recommended that the password for SUPER be changed as soon
as possible to maintain system security.
Follow these steps to change the factory-programmed password.
1. Login as SUPER using the NMS method described above.
2. Enter the command passwd. At the next prompt, enter a new password with a maximum of eight characters. (See passwd on Page 73.)
NOTE: Passwords cannot be changed using the front panel navigation buttons.
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LEDR Series Installation & Operation Guide
MDS 05-3627A01, Rev. C
3. Re-enter your new password (for verification purposes). If the entry
is correct, the radio responds with user: Command Complete.
4. Set up user accounts as required beyond the factory default of
SUPER.
Create accounts, set permission levels, or delete accounts as desired
using the user command. See Page 86 for complete description of
user command.
NOTE: It is recommended that users log out when finished using the
front panel navigation keys or console terminal. This can be
done using the Logout screen on the radio, or the logout
command from a console terminal as appropriate. If there is no
key or terminal activity for 10 minutes, the radio automatically
logs out and reverts to read-only status.
4.6 STEP 5—Review Essential Operating
Parameters
Review and set the following parameters to allow data throughput and
interconnection with the network. These are radio operating frequencies, data interface clocking, and data framing. Table 1 outlines these
based on each model group and configuration.
Table 11. Essential Parameters for Standalone & Protected
Model
Group
Data Interface
Parameter
Setting
Subrate
EIA-530
RF TX/RX
Frequency
Factory configured for customer
frequencies.
Clocking
Use clkmode command
(Page 54) to match interface
equipment.
Framing
Does not apply.
RF TX/RX
Frequency
Factory configured for customer
frequencies.
Clocking
Use clkmode command
(Page 54) to match interface
equipment.
Framing
Set as appropriate using fstruct
command (Page 59).
Time Slot
Set as appropriate using timeslot
command (Page 84).
Line Code
Set as appropriate using linecode
command (Page 66).
FT1/FE1
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LEDR Series Installation & Operation Guide
27
Table 11. Essential Parameters for Standalone & Protected (Continued)
Model
Group
Data Interface
Parameter
Setting
Fullrate
E1
RF TX/RX
Frequency
Factory configured for customer
frequencies.
Clocking
No settings are necessary. Radio
automatically detects clock and
sets mode.
Framing
• Radio set to unframed (default).
• Make changes as appropriate
using fstruct command
(Page 59) to match interface
equipment.
Line Code
Set as appropriate using linecode
command (Page 66).
4.7 STEP 6—Set TCP/IP Settings to Enable SNMP
and/or Telnet Management (If required)
• The unit IP address is factory configured with a unique address
based on the last three digits of the radio’s serial number.
• Use ip command (Page 63) to change the IP address, set netmask, gateway and IP Port as necessary.
• In a protected radio, change the rdnt settings (Page 74) to match
the user-assigned IP addresses.
4.8 STEP 7—Set User Configurable Fields
Change only
if required.
Many items are user configurable, to ease customer use. These
include, and are not limited to the following. See the NMS command description in the manual for more detail:
• Set user information fields using info command (Page 62)
• Set alarms and alarm mappings using the alarm command
(Page 49)
• Set event mappings using the evmap command (Page 57)
• Set alarm thresholds using the threshold command (Page 83)
• Set the SNMP community using the snmpcomm command
(Page 81)
4.9 STEP 8—Verify Radio Performance
The data performance and NMS should be verified. Use the loopback command (Page 69) to verify data throughput.
4.10 STEP 9—Install the Link
Peak the antennas for maximum RSSI using the continuously
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LEDR Series Installation & Operation Guide
MDS 05-3627A01, Rev. C
updated rssi command (Page 80), either the front panel screen or
using the trend command (Page 86) via the NMS.
4.11 STEP 10—Verify the Link Performance
Connect and verify the proper operation of external equipment connected to the LEDR radio link.
5.0 CONFIGURATION AND CONTROL
VIA THE FRONT PANEL
Figure 9 on the following pages are a pictorial view of the front panel
menu tree. Detailed explanations of the screens are provided in
Section 5.1, Front Panel LCD Menu Descriptions.
MDS 05-3627A01, Rev. C
LEDR Series Installation & Operation Guide
29
Step 1
Details Page 32
LEDR Link
Default Screen
ENTER
Step 2
Step 3
Details Page 38
LEDR Link
Details Page 38
LEDR Link
Logout
Details Page 39
LEDR Link
Network
Details Page 34
LEDR Link
General
Details Page 42
LEDR Link
RF Config
Username
Admin
Menu Selection
LEDR Link
Logged out
Password
******
Text Enter
(Note: Logout screens available only when logged in.)
Display Only
Netmask
000.000.000.000
Gateway
000.000.000.000
Default IP Port
000.000.000.000
Number Enter
Number Enter
Number Enter
Number Enter
Unit ID
000
Model Number
LEDR 400F
Serial Number
xxxxxxxxxxxx
Firmware Rev.
x.x.x
Display Only
Display Only
IP Address
000.000.000.000
Number Enter
Tx Frequency
xxxx.xxxx MHz
TxKey Enable
UN-KEYED
Rx Frequency
xxxx.xxxx MHz
Details Page 35
Number Enter
Number Enter
Menu Selection
LEDR Link
IO Config
Clock Mode
INTERNAL
Interface
E1
CAS Enable
DISABLED
Menu Selection
Menu Selection
Menu Selection
Choose Line 1
LINE1
Frame Struct 1
FAS ONLY
AIS Generate 1
OFF
Menu Selection
Menu Selection
Menu Selection
Details Page 36
LEDR Link
Line Config
Details Page 40
LEDR Link
Performance
Details Page 33
LEDR Link
G.821
Details Page 38
LEDR Link
Modem
Details Page 32
LEDR Link
Console
Details Page 32
LEDR Link
Diagnostics
Details Page 40
LEDR Link
Orderwire
Details Page 33
LEDR Link
Details Page 41
LEDR Link
Redundant
Details Page 41
LEDR Link
Remote Status
30
RSSI
-60 dBm
Display Only
G.821 Status
ERROR FREE
Display Only
Rx Lock
LOCKED
SNR
+27 dB
Power Out
+30 dBm
Set/Display
Display Only
Available
Unavailable
0 sec
Display Only
Display Only
Display Only
Bandwidth
200 kHz
Menu Selection
Line map
1a 2b 3c 4d
Menu Selection
AIS Forwarding 1
OFF
Menu Selection
PA Temperature
+37 °C
Display Only
Errored
0 sec
Display Only
Freq. Offset
-170 Hz
Corrected
0 bytes
Uncorrectable
0 blocks
Display Only
Display Only
Display Only
Display Only
Baud Rate
9600
Parity
None
Menu Selection
Loopback
NORMAL (NONE)
Menu Selection
Send ODW Alert
400
Menu Selection
Backlight
ENABLED
Menu Selection
Built in Test
Start?
Menu Selection
Volume
~~~~~~
Vox Threshold
~~~~~~
Level Setting
Level Setting
Viewing Angle
~~~~
Keypad Beep
ENABLED
Key Repeat Rate
150 ms
Menu Selections
Menu Selections
Menu Selections
Angle Setting
Sibling IP
000.000.000.000
Protected Mode
Redundant
Active
Redundant
Number Enter
Display Only
Display Only
Remote UnitID
Number

Number Enter
NOTES:
• Redundant screens visible only on protected/redundant stations.
• See Redundant screen description for additional displays.
Details Page 41
LEDR Series Installation & Operation Guide
MDS 05-3627A01, Rev. C
Hardware Rev.
xxxxxxxx
Display Only
Mod/Data rate
32-QAM 768 kbps
Menu Selection
Line Code
AMI
Menu Selection
Severely Erred
0 sec
Display Only
Reframe
3 cons. FAS
Pulse Shape 1
g.775
Menu Selection
Menu Selection
Cable Length 1
1-133 ft
Menu Selection
RESET G.821?
NO
Menu Selection
Bit Error Rate
< 1 x 10-6
Display Only
Display Only—This description indicates the LCD menu item is for
informational purposes only.
Menu Selection—This description indicates there are selections
available and the choices may be scrolled through using the
keys. Press the
key again to save menu selection choice.
ENTER
Text or Number Enter— This description indicates the entry is
alphanumeric. The
keys are first used to position the cursor
over the text to be changed. Then, the
key is pressed to enter
the edit mode. Use the
keys to scroll through all available
characters. Press the
key again to save the displayed character in displayed location.
ENTER
Details Page 33
Default Screen
RSSI
ENTER
Figure 15. Front Panel LCD Menu Navigation
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LEDR Series Installation & Operation Guide
31
5.1 Front Panel LCD Menu Descriptions
NOTE: The menus in this section are listed in alphabetical order.
CONSOLE
Baud Rate
9600
This menu allows you to set or view the current data rate setting for the
CONSOLE Port serial interface. Refer to Figure 33 on Page 129 for
pinout information of this Port. See “OPTION 1: Uploading Firmware
via the CONSOLE Port” on Page 94 for more information.
For the NMS command-line
equivalent, see “con” on
Page 56.
Parity
None
This menu allows you to set or view the current parity setting for the
serial interface. Refer to Figure 33 on Page 129 for
pinout information for this Port. Typically, this will be set to NONE.
CONSOLE Port
For the NMS command-line
equivalent, see “con” on Page
56.
Default Screen
LEDR Link
Default Screen
This menu allows you to view the default screen that appears on the
LCD display. If desired, the default screen may be changed (See
“ Default Screen” on Page 33).
Diagnostics
Loopback
NORMAL (NONE)
This menu is used to start the loopback mode for testing purposes.
Remote loopback port selection is relative to the local port. The radio
link will translate any line mapping to select the correct physical remote
port to loop back, based on the selected local port.
When conducting RF loopback testing, see Page 69 (loopback NMS
command) for additional information.
For the NMS command-line
equivalent, see “loopback”
on Page 69.
Built in Test
Start?
This menu is used to start the loopback mode to check radio functions.
When conducting RF loopback testing, see Page 69 (loopback) for
important information.
For the NMS command-line
equivalent, see “test” on
Page 83.
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Front Panel
Backlight
ENABLED
Viewing Angle
~~
This screen provides control of the front panel LCD illumination. The
LCD illumination may need to be enabled to view the LCD depending
on ambient lighting conditions.
This screen allows you to adjust the viewing angle (top to bottom) of the
LCD screen. The angle may need to be adjusted to compensate for the
mounting position and ambient lighting conditions of the radio. Use the
keys to adjust the screen. Pressing
saves the adjusted value
as the default setting.
ENTER
Keypad Beep
ENABLED
This screen allows the radio beeper to be disabled or enabled. The
beeper provides a short “chirp” whenever a front panel key is pressed.
Key Repeat Wait
150 ms
This screen allows you to set the time delay that occurs before a key will
start repeating its function when held down.
Default Screen
RSSI
This screen allows you to set the default screen that appears when the
radio is first turned on, or is left idle for more than 10 minutes. The RSSI
screen is commonly chosen, but any screen may be selected as a default.
G.821
LEDR Link
G.821
G.821 Status
Error Free
This menu contains radio link performance information. The G.821
standard defines descriptive words associated with bit-error rate performance. Refer to the ITU-T G.821 recommendations for definitions and
standards.
This display shows summary information regarding the bit-error-rate
(BER) status of the radio.
Available
0 sec
This screen shows the available seconds of the radio link. The G.821
standard defines Available Seconds as the period of time following a
period of 10 consecutive seconds, each of which has a BER of less than
1x10-3.
Unavailable
0 sec
This screen shows the unavailable seconds of the radio link. The G.821
standard defines Unavailable Seconds as the period of time following a
period of 10 consecutive seconds, each of which has a BER of higher
than 1x10-3.
Errored
This screen shows the errored seconds of the radio link. The G.821 standard defines Errored Seconds as a one second period in which one or
more bits are in error.
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33
Severely Erred
Reset G.821?
NO
This screen shows the severely errored seconds of the radio link. The
G.821 standard defines Severely Errored Seconds as a one second
period that has a BER higher than 1x10-3.
This screen allows the user to reset the G.821 performance monitoring
screens.
General
Unit ID
000
This menu allows the Unit ID of the radio to be displayed or changed.
The Unit ID allows an individual radio to be signaled for Orderwire use.
For the NMS command-line
equivalent, see “unitid” on
Page 86.
Model Number
LEDR 1400S
This menu displays the radio model number. The user cannot change the
radio type.
For the NMS command-line
equivalent, see “model” on
Page 71.
Serial Number
xxxxxxxxxxxx
This menu displays the radio serial number and matches the serial
number on the chassis sticker. The user cannot change the radio’s serial
number.
For the NMS command-line
equivalent, see “sernum” on
Page 81.
Firmware Rev.
xxxxxxxx
This menu displays the firmware revision level of the internal radio software.
For the NMS command-line
equivalent, see “ver” on Page
87.
Hardware Rev.
xxxxxxxx
This menu displays the hardware revision level of the main PC board in
the radio.
For the NMS command-line
equivalent, see “ver” on Page
87.
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IO Configuration
Clock Mode
INTERNAL
This screen is used to set or display the data clocking method. For synchronization purposes, several different clocking schemes can be used.
See “Transmit Clock Selection (Subrate Radios Only)” on Page 23.
For the NMS command-line
equivalent, see “date” on
Page 56.
NOTE: For subrate models: LEDR 400S/900S/1400S
Earlier versions of the software may display the Clock Mode
as NORMAL instead of INTERNAL.
Interface
E1
This screen is used to set or display the payload data interface. The
available selections are E1 and T1, depending on hardware configuration of the LEDR radio.
For the NMS command-line
equivalent, see “interface” on
Page 62.
CAS Enable
DISABLED
This screen is used to set or display the Channel Associated Signaling
(CAS) status. The available selections are Enabled and Disabled.
This screen will only be functional in radios factory-equipped to support
CAS. Consult the factory if you require this service.
For the NMS command-line
equivalent, see “modem” on
Page 72.
Line map
1a 2b 3c 4d
This screen is used to set or display the current span mapping configuration. The entry consists of from 1 to 4 alpha-numeric characters specifying line interface to span mapping. Valid numbers are 1–4. Valid span
characters are a–d.
Example: Entering 1a 2b 3c 4d asserts the following:
maps line 1 to span a
maps line 2 to span b
maps line 3 to span c
maps line 4 to span d
For the NMS command-line
equivalent, see “linemap” on
Page 66.
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35
Line Configuration
Choose Line 1
LINE1
This screen is used to choose or display the line (1-4) that is selected.
This selection will be active for all of the screens that follow in the Line
Configuration menu and will be displayed in the upper right hand corner
of each screen.
For the NMS command-line
equivalent, see “linename”
on Page 67.
Frame Struct 1
FAS ONLY
This screen is used to set or display the span(s) frame structure. The
allowable selections are shown in Table 11.
Table 11. Frame Structure—Allowable Selections
T1 Operation
E1 Operation
0–FT only (Default)
0–FAS Only (Default)
1–ESF
1–FAS + BSLIP
2–ESF + PRM
2–FAS + CRC
3–SF
3–FAS + CRC + BSLIP
4–SF + JYEL
4–FAS + CAS
5–ESF + CRC
5–FAS + CAS + BSLIP
6–ESF + CRC + PRM
6–FAS + CRC + CAS
7–FAS +CRC + CAS +BSLIP
For the NMS command-line
equivalent, see “fstruct” on
Page 59.
AIS Generate 1
OFF
This screen is used to set or display the Alarm Indication Signal (AIS)
status. It may be set to ON or OFF. When generation is enabled, fault
conditions within the link or at the line interface will cause the appropriate AIS signaling to occur.
For the NMS command-line
equivalent, see “ais” on Page
48.
AIS Forwarding 1
OFF
This screen is used to set or display the Alarm Indication Signal (AIS)
forwarding status. It may be set to ON or OFF. When forwarding is
enabled, AIS/RAI signaling at the line interfaces will be detected and
passed to the other end of the radio link.
For the NMS command-line
equivalent, see “ais” on Page
48.
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Line Code
AMI
This screen is used to set or display the linecode used by the radio. The
available selections are AMI or HDB3.
For the NMS command-line
equivalent, see “linecode” on
Page 66.
Reframe
3 cons. FAS
This screen is used to set or display the reframe criteria of the LEDR
radio. The setting is based on the number of errors encountered. The
available selections for T1 and E1 operation are listed in Table 12
below.
Table 12. Reframe Criteria Selections
T1 Operation
E1 Operation
2 out of 4 Fbit errors (Default)
3 consecutive FAS errors (Default)
2 out of 5 Fbit errors
915 CRC errors
2 out of 6 Fbit errors
For the NMS command-line
equivalent, see “reframe” on
Page 76.
Pulse Shape 1
g.775
This command is used to select or display the pulse shape used with the
data interface cable. Table 13 below shows the available selections for
T1 and E1 operation.
Table 13. ITU Cable Specifications
Specification
g.775 (Default)
i.431
For the NMS command-line
equivalent, see “line” on
Page 65.
Cable Length 1
1-133 ft
This command is used to set or display the cable length being used for
the data interface. The available selections are:
1 to 133 feet (Default)
133 to 266 feet
266 to 399 feet
399 to 533 feet
533 to 655 feet
For the NMS command-line
equivalent, see “line” on
Page 65.
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37
Login
LEDR LINK
Login
The login menus allows you to log in to the radio’s operating system and
gain access to configuration and diagnostics functions permitted for
your assigned access level.
Username
Admin
The username menu is where you specify the user name assigned by the
user access administrator.
For the NMS command-line
equivalent, see “login” on
Page 68.
Password
******
The password screen is where you specify the password associated with
your user name to gain access to the login account. A maximum of eight
characters is allowed.
For the NMS command-line
equivalent, see “passwd” on
Page 73.
Logout
LEDR Link
Logout
The logout menu allows you to terminate your session with the LEDR
radio. When this screen is displayed, press
to finish your session.
ENTER
Modem
Rx Lock
LOCKED
38
This menu indicates whether the receiver demodulator has detected a
signal, acquired the carrier, and data rate, as well as achieved a Forward
Error Correction (FEC) lock.
Freq. Offset
-170 Hz
This screen shows the frequency offset of the LEDR radio as measured
in Hertz.
Corrected
0 bytes
This menu shows how many bytes have been corrected by the radio’s
FEC capability.
Uncorrectable
0 blocks
This menu shows how many frames (blocks) could not be corrected by
the radio’s FEC capability.
Bit Error Rate
< 1 x 10-6
This menu shows the current bit error rate (BER) of the LEDR radio.
LEDR Series Installation & Operation Guide
MDS 05-3627A01, Rev. C
Network
IP Address
000.000.000.000
This menu allows changes to the radio’s IP address. The IP address is
used for network connectivity. The IP address also allows new radio
software to be downloaded over-the-air.
For the NMS command-line
equivalent, see “ip” on Page
63.
Netmask
000.000.000.000
This menu allows the subnet mask to be viewed and changed. The
subnet mask specifies which bits of the host IP address can be re-used
for increased network addressing efficiency.
Example: Consider an IP address in a Class C network, such as
150.215.017.009. The Class C network means that the right-most group
of numbers (009) identifies a particular host on this network. The other
three groups of numbers (150.215.017) represent the network address.
Subnetting allows the further division of the host part of the address
(right-most group of numbers) into two or more subnets. A subnet mask
of 255.255.255.127 allows half of the host portion of the IP address to
be reused to define sub-networks.
For the NMS command-line
equivalent, see “ip” on Page
63.
Gateway
000.000.000.000
This menu allows the Gateway IP address to be viewed or set. The
Gateway IP address is the address of the radio that connects the radio
network to an IP network.
For the NMS command-line
equivalent, see “ip” on Page
63.
Default IP Port
Ethernet
This menu allows selection of the Default IP port for networking connections to the LEDR radio. The Ethernet selection is used for cable connection to a Local Area Network (LAN) or repeater via the radio’s rear
panel ETHERNET connector.
The AIR selection is commonly used for over-the air (RF) networking
between radios, but may also be used with a back-to-back cable connection between two radios via the radio’s rear panel ETHERNET NMS connector. This type of communication uses the SNAP protocol and
requires the use of an ethernet crossover cable.
For the NMS command-line
equivalent, see “ip” on Page
63.
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39
Orderwire
Send ODW Alert
This menu allows you to “ring” the Orderwire at a specified radio site.
Refer to USING ORDERWIRE on Page 99 for instructions on using the
Orderwire.
For the NMS command-line
equivalent, see “alert” on
Page 51.
Volume
~~~
This screen is used to set or display the Orderwire volume. Use the
keys to adjust the screen. Pressing
saves the adjusted value
as the default setting.
ENTER
For the NMS command-line
equivalent, see “volume” on
Page 88.
Vox Threshold
~~
This screen is used to set or display the Orderwire vox threshold (activation level). Use the
keys to adjust the screen. Pressing
saves the adjusted value as the default setting.
ENTER
For the NMS command-line
equivalent, see “vox” on
Page 88.
Performance
The Performance menu items provide diagnostics information regarding
the radio. The following diagnostic parameters are available on a continuous, updating basis:
•
•
•
•
RSSI
-60 dBm
RSSI—Received Signal Strength Indicator
SNR—Signal/Noise Ratio (not valid if there is an RX Alarm)
POUT—Power Output
PA Temperature—Power amplifier temperature
The RSSI display indicates the strength of the radio signal being
received at the radio receiver. The measurement is in dBm. Therefore,
an RSSI of –80 dBm is stronger than a –100 dBm signal.
For the NMS command-line
equivalent, see “rssi” on
Page 80.
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LEDR Series Installation & Operation Guide
MDS 05-3627A01, Rev. C
SNR
+27 dB
The SNR display indicates the relationship of the amount of intelligence
versus noise on the radio signal. The higher the SNR, the better the
quality of the radio signal.
For the NMS command-line
equivalent, see “snr” on Page
82.
Power Out
+30 dBm
The Power Output display indicates the transmitter power output in
dBm. (+30 dBm is equal to 1.0 watt; +20 dBm is 100 mW.)
The power output level can be set from this display by pressing the
key, and through use of the arrow keys, increase or decrease the power
level. When the desired value is displayed, press the
key to save
the setting.
ENTER
ENTER
For the NMS command-line
equivalent, see “rfout” on
Page 77.
PA Temperature
+37 °C
The PA Temperature display indicates the internal temperature
(degrees Celsius) at the hottest point on the radio’s printed circuit board
(near the power amplifier section of the radio).
For the NMS command-line
equivalent, see “temp” on
Page 83.
NOTE: It is normal for the PA temperature to be 30 to 40° C above the
ambient room temperature.
Redundant
My Status
OK
Sibling Status
OK
Active
NO
MDS 05-3627A01, Rev. C
This screen is used to display the status of the radio currently being used.
“OK” is displayed when no problems are detected.
This screen is used to display the status of the “other” radio in a protected configuration (the one not currently being used). “OK” is displayed when no problems are detected.
This screen is used to set or display whether the currently selected radio
is the active unit.
LEDR Series Installation & Operation Guide
41
Mode
1 + 1 HOT
Sibling IP
000.000.000.000
This screen is used to set or display the radio’s redundancy mode. The
available selections are: 1+1 HOT (redundant hot standby), 1+1 WARM
(redundant warm standby) or STANDALONE (non-redundant) configuration.
This screen is used to set or display the sibling radio’s Internet Protocol
(IP) address. (See note below.)
NOTE: The associated radio IP address should be programmed to the
IP address of the other radio connected to the protected
switching chassis. The associated radio IP address is used by
the redundant radio to share information between the units.
This address is necessary for proper operation. The associated
radio IP address does not affect IP routing and forwarding,
SNMP, or Telnet.
Hitless
ON
This screen sets or displays whether the radio is set to perform error-free
“hitless” switchover in the event of an alarm condition.
Default Radio
Yes
This screen displays whether or not the radio is the default radio in a protected configuration. The default radio is determined by which one is
connected to the top connector of the Protected Switch Chassis rear
panel. (See Figure 12 on Page 17.)
Switch Xcvr
Switch?
This screen is used to force a switchover to the non-active radio transceiver. (The newly selected unit becomes the active transceiver).
Remote Status
Remote UnitID

This screen is used to set or display the unit identification for the remote
radio.
RF Configuration
Tx Frequency
This menu is used to set or view the transmit (TX) frequency of the
radio.
For the NMS command-line
equivalent, see “freq” on
Page 58.
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MDS 05-3627A01, Rev. C
Rx Frequency
This menu is used to set or view the receive (RX) frequency of the radio.
For the NMS command-line
equivalent, see “freq” on
Page 58.
Tx Key Enable
This menu is used to enable (key) or disable (dekey) the transmitter or
to verify that the radio is keyed and the transmitter is active. The radio
is normally keyed and transmitting whenever power is applied.
For the NMS command-line
equivalent, see “txkey” on
Page 86.
Bandwidth
Mod/Data rate
32-QAM 768 kbps
This menu displays the bandwidth setting of the radio. The bandwidth is
set at the factory and cannot be changed by the user. Refer to Table 9 on
Page 22 for allowable combinations of bandwidth, data rates, and modulation types.
This menu displays the modulation type and the aggregate link data rate.
The available modulation types are QPSK, 16 QAM, and 32 QAM. The
data rate can be changed, but is dependent on the modulation type. See
“Bandwidths, Data Rates and Modulation Types” on Page 22.
For the NMS command-line
equivalent, see “modem” on
Page 72.
6.0 CONFIGURATION AND CONTROL
VIA THE CONSOLE PORT
6.1 Introduction
The CONSOLE Port on the front panel provides full access to configuration and diagnostics information. It is the most common way to access
the LEDR radio for its initial configuration. The CONSOLE Port is an
EIA-232 connection that provides ASCII text communications to a connected terminal.
Most of the commands listed on the following pages are available
through other communication channels. These include Ethernet, IP,
Telnet and the rear panel Service Channel.
Refer to I/O Connector Pinout Information on Page 129 for connector
wiring details.
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43
NOTE: It is important to use a terminal or terminal-emulator that
supports 80 characters-per-line and 25 lines-per-screen. The
display will be distorted if terminals with different line characteristics are used.
6.2 Initial Connection to the CONSOLE Port
1. Connect a terminal to the front panel DB-9 connector labeled
2. Open an ANSI terminal application on the terminal. (If using the
Windows operating system, a HyperTerminal session can be started
by selecting Programs>>Accessories>>HyperTerminal.)
3. Press ENTER a few times. When communications are established
with the radio, an LEDR> text prompt appears on the terminal screen.
4. Type login  (or rlogin  for remote
access) and press ENTER . At the password> prompt, type your password (Eight characters maximum; case sensitive).
5. You now have access to the command line interface. It can be used
to configure and query the radio parameters and setup information.
The available commands can be listed on the display by typing help
at the LEDR> prompt, then ENTER .
6.3 NMS Commands
Once you are successfully logged in, the Network Management System
(NMS) commands shown in Table 14 are available at the command line
prompt (LEDR>) NOTE: Some commands are model and/or feature specific. (See Table 15 on Page 48 for Interface icons.)
Table 14. NMS Commands
44
Command
Description Summary
Details
Displays the available NMS commands. May also
be entered after any other command to obtain
context sensitive help. (Note: the word help may
be entered in place of ?).
Page 48
ais
Echoes/enables/disables Alarm Indication Signal
(AIS) generation and Remote Alarm Indication
(RAI) detection, AIS and RAI Signal (RAIS)
forwarding on given span(s).
Page 48
alarm
Provides control of alarm outputs and displays
state of alarm inputs.
Page 49
alert
Sends an alert sound to the specified radio
Page 51
arp
Set/display ARP Setting of Ethernet Port
Page 51
ber
Bit-Error Rate report for the RF link.
Page 51
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MDS 05-3627A01, Rev. C
Table 14. NMS Commands (Continued)
MDS 05-3627A01, Rev. C
Command
Description Summary
Details
bert
Bit-Error Rate test of data interface
Page 52
boot
Displays the active image (firmware) or reboots
the radio with a specified firmware image
Page 54
buzzer
Briefly sounds the radio’s piezo buzzer to test its
operation
Page 54
clkmode
Set/display data clocking mode
Page 54
coffset
Displays modem carrier frequency offset in Hz
Page 55
con
Set/display CONSOLE Port communications
parameters
Page 56
config
Used to get or send a radio configuration file
Page 56
date
Set/display current date
Page 56
dtren
Set/display DTR enable
Page 57
ethernet
Displays Ethernet address
Page 57
events
Event log commands
Page 57
evmap
Set/display alarm port and alarm LED settings
Page 57
fec
Display corrected and Uncorrectable FEC errors
Page 58
freq
Set/display operating frequencies
Page 58
fset
Display absolute frequency limits
Page 59
fstruct
Set/display current span(s) frame structure
Page 59
g821
Show/Reset G.821 information
Page 60
group
Set/display network group
Page 60
help
Displays the available NMS commands. May also
be entered after any other command to obtain
context sensitive help. (Note: A question mark (?)
may be entered in place of help).
Page 48
http
Check or boot the internal HTTP/IP server
Page 61
icopy
Firmware image copy
Page 61
idlepat
Set/display timeslot idle pattern
Page 61
info
Set/display radio/owner information
Page 62
interface
Set/display the payload data interface
Page 62
interleave
Set/display interleave depth
Page 63
ip
Set/display the radio’s IP configuration
Page 63
iverify
Firmware image verify
Page 64
lcd
Tests radio’s front panel LCD display
Page 64
led
Tests radio’s front panel LEDs
Page 64
line
Set/display pulse shape settings
Page 65
linecode
Set/display the linecode used by span(s)
Page 66
linerr
Show/enable/clear line errors
Page 67
linemap
Set/display current linemapping configuration
Page 66
linename
Set/display names for line interfaces
Page 67
LEDR Series Installation & Operation Guide
45
Table 14. NMS Commands (Continued)
46
Command
Description Summary
Details
log
View, sort, clear, send event log information
Page 68
login
Console user level access
Page 68
logout
Console user exit
Page 69
loopback
Set/display loopback modes
Page 69
model
Display radio model number
Page 71
modem
Set/display radio modulation type and data rate
Page 72
network
Display radios in the network
Page 73
passwd
Sets new user password (8 characters max.)
Page 73
ping
Test link to IP address on network
Page 73
pll
Displays Phase Lock Loop status
Page 74
pmmode
Enables/disables modem modulator power
measurement mode (on/off)
Page 74
rdnt
Set/display redundant operating configuration
Page 74
reframe
Set/display the reframe criteria
Page 76
reprogram
Reprograms radio software
Page 76
rfocal
Set/display RF power output calibration sequence
Page 76
rfout
Displays transmit power
Page 77
rlogin
Log in to remote radio
Page 77
route
Add/delete/modify IP routing table entries
Page 78
rssi
Displays received signal strength
Page 80
rssical
Set/display RSSI calibration table
Page 80
rxlock
Displays current modem lock status
Page 81
sabytes
Echo/set sa bytes in E1 multi-frame
Page 81
sernum
Displays radio serial number
Page 81
snmpcomm
Set/display SNMP community names
Page 81
snr
Displays signal to noise ratio
Page 82
status
Displays performance and configuration data
Page 82
svch
Set/display Service Channel configuration
Page 82
telnetd
Displays or kills (terminates) Telnet session(s)
Page 82
temp
Displays PA temperature
Page 83
test
Runs self-test of LEDR hardware
Page 83
threshold
Set/display performance degradation threshold(s)
Page 83
time
Set/display system time
Page 84
timeslot
Selects which timeslots to transmit for a span(s).
Default action is to enable.
Page 84
trapfilter
Set/display which events cause SNMP traps
Page 85
trapmgr
Set/display the trap manager IP address
Page 85
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MDS 05-3627A01, Rev. C
Table 14. NMS Commands (Continued)
Command
Description Summary
Details
trend
Displays continuously updated readings of: RSSI,
radio temperature, RF output, signal-to-noise
ratio, and FEC errors (corrected and
uncorrectable)
Page 86
txkey
Key or unkey radio
Page 86
unitid
Displays the three-digit unit identification
Page 86
uptime
Displays how long the radio has been operating
Page 86
user
Administration tool for adding, modifying or
deleting user accounts
Page 86
ver
Displays software version
Page 87
volume
Set/display orderwire handset volume
Page 88
vox
Set/display orderwire VOX threshold
Page 88
who
Displays the currently logged in radio
users/accounts
Page 89
NOTE: The NMS commands listed in this manual show the full set of
commands from all radio versions. Different hardware configurations may have fewer selections.
6.4 Command Detailed Descriptions
Introduction
The following commands are available through the CONSOLE Port.
These commands all require the Enter or Return key be pressed after the
command.
The following conventions are used to help describe the usage of the
commands.
Square brackets [ ] contain subcommands that may or may not be
needed as part of the desired command. If there is more than one
possible subcommand a vertical line | separates the commands
within the square brackets. A subcommand is an optional extension of the command and changes the basic command.
Angle brackets <> contain arguments. The arguments are values
needed to carry out the command such as a frequency value or
option.
Some commands are limited to use in certain radio models or configurations. These include subrate and fullrate. One or more of the symbols
as listed in Table 15 will identify these commands.
MDS 05-3627A01, Rev. C
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47
Table 15. Symbols for Interface-Specific Commands
Symbol
530
EIA-530
FT1
Fractional-T1/G.703
FE1
Fractional-E1/G.703
E1
? or help
Interface/Group
E1/G.703
Help
Usage: help
This command returns a list of currently available commands. In addition, entering help as a subcommand before or after a command returns
usage information regarding the command. A? (question mark) can be
also be used to invoke help.
Command Example:
rssi help ENTER
Returns:
Usage: command [subcommand] 
ais
Alarm Indication Signal
FT1
Usage: ais [linelist] [-g ] [-f ]
E1
FE1
This command enables or disables alarm signal generation [-g] and forwarding [-f] on specified E1/T1 interface lines. When generation is
enabled, fault conditions within the link or at the line interface will cause
the appropriate AIS/RAI signaling to occur. When forwarding is
enabled, AIS/RAI signaling at the line interfaces will be detected and
passed to the other end of the link.
Command Example:
ais -f on -g on
Returns:
AIS on RAI on
NOTE: For protected configurations and full-rate radios, disable the
alarm generation through the use of the ais -g off command.
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Background on AIS command:
In fractional operation, the radio extracts the required timeslots and data
at the input to a link, and reconstructs the full frame at the output end.
The AIS <-g (generation)> command, when enabled, allows the radio to
override the frame reconstruction process in order to generate a proper
all-ones alarm signal. For example, modem loss of synchronization will
cause all-ones to be transmitted from the active G.703 ports. When
AIS <-g is disabled, the output will consist of a framed signal with
all-ones in the active timeslots. In Fractional operation, AIS generation
also creates a yellow alarm/RAI back to the defective source when a
problem is found at the input. In FE1 mode, when AIS <-g is enabled, loss
of Multi-Framing Alignment Sequence (MFAS) at the line receiver will
generate a Multi-frame Yellow Alarm (MYEL) or Multi-frame Remote
Alarm Indication (MRAI) at the line transmitter.
is the act of detecting a condition at the input and
causing an appropriate response at the other end. For example, with forwarding enabled, an all-ones signal applied at one end causes all-ones to
be output at the other. A Remote Alarm Indication (RAI) applied will
likewise appear at the opposite end. Disabling the forwarding function
limits the presentation of alarm signaling to the active timeslots at the
remote end. It is recommended that the ais -f on or ais --g on command be
used for Fractional operation, to enable alarm generation and forwarding.
AIS <-f (forwarding)>
In full-rate modes, the radio will always output AIS when the unit is
unlocked—received radio signal is lost. When the modem is locked, and
the input is removed from one end, you will get all-zeros at the other end
unless AIS generation is enabled. Yellow alarms/RAI are not generated
in the full-rate LEDR radio models; however AIS and RAI forwarding
are available. It may be desirable to have alarms generated (ais -g on) in
full rate models, depending on the user's requirements as outlined in the
next paragraph.
Since the generation and forwarding operations require use of the Service Channel, the AIS/RAI response times are on the order of a few seconds. Generation and forwarding can be very helpful in correcting
problems with the network when they arise. However, in systems where
the response time is critical, these modes should be disabled: In fractional mode, enter ais -f off -g off. In full-rate mode, enter ais -g off.
alarm
Alarm I/O
Usage: alarm [in|out] [1-4|all] [subcommand] [arguments]
This command is used to control the four (4) external alarm contacts and
to display the state of the four (4) external alarm inputs.
Outputs (Relays)—Alarm outputs may be directly driven to a
state, or be mapped to, internal events via the evmap command
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49
(Page 57). When mapped to events, the active level may reprogrammed to be either active-open or active-closed. Active means
that an event is mapped to an external alarm output that is currently
active. (See “Alarm I/O” on Page 20 for electrical parameters and
typical examples of alarm usage.)
Inputs—Alarm inputs are used to generate events in the event log
and also generate SNMP traps if so programmed by the events filter
command. They may be directly read via the alarm command, as
well. They may also have their active level set to be either active
high or low. (alarm active high; alarm active low)
Naming—Finally, both inputs and outputs may be named by users
to allow for easy identification. For example, “Fire Alarm” could be
used as the name for Alarm Input 1. Traps are sent with this name
so that users may more easily identify the source of the alarm.
Subcommands:
active [open|closed]—Set
alarm input/outputs active state.
—Latch alarm outputs to one state to ignore events
which are assigned to them.
set [open|closed]
name [name_string]—Create a user defined “name” for each alarm. 16
characters maximum, no spaces; not compatible with “all”.
Command Example #1:
alarm in all
Returns:
alarm:
alarm:
alarm:
alarm:
alarm:
alarm:
alarm:
Type
======
Input
Input
Input
Input
Name
================
AlarmInput1
AlarmInput2
AlarmInput3
AlarmInput4
Active
Level
======
closed
closed
closed
closed
Current
Reading
=======
open
open
open
open
Command Example #2:
alarm out 2 set closed
Returns:
alarm:
alarm:
alarm:
alarm:
Type
======
Output
Name
================
AlarmOutput2
Active
Level
======
closed
Current
Reading
=======
closed
Command Example #3:
alarm in 3
Returns:
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alarm:
alarm:
alarm:
alarm:
alert
Type
======
Input
Name
================
AlarmInput3
Active
Level
======
closed
Current
Reading
=======
open
Alert another LEDR Radio
Usage: alert <3 digit unit ID>|all
This command is used to sound the alert buzzer on another radio. This
function allows you to signal a radio and alert someone that the Orderwire handset should be picked up.
The three-digit number following the command indicates the unit ID of
the radio that will be signaled. Radios available for signaling can be
determined by issuing the network command. See “USING ORDERWIRE” on Page 99 for more information.
arp
Address Resolution Protocol (ARP) Setting of Ethernet Port
Usage: arp [-a | -s [ip address] | -d [ip address]
-a
View the ARP table
-s
Add the IP address to the ARP table. The radio will proxy ARP
for any addresses that are added
-d
delete the IP address from the ARP table
This command displays the contents of the radio’s ARP table, which is
a listing of IP addresses of which the radio is aware. It can also be configured to “spoof,” or proxy, for other (non-LEDR radio) devices that
are managed using the radio’s out-of-band Service Channel and directly
connected at some point to a radio’s Ethernet port, or to a common hub
with a LEDR radio. In other words, the radio network can be configured
to allow seamless integration of other IP-manageable devices by
responding to ARP requests and/forwarding IP traffic directed to those
devices.
See the route command on Page 78 for information on other necessary
configuration steps to allow for IP connectivity to LEDR radios and
associated devices using the radio’s network-management channel.
ber
Bit-Error Rate of the RF Link
Usage: ber
This command displays pre-FEC and post-FEC Bit-Error Rate (BER)
between the LEDR radios in the first link.
NOTE: The BER measurement limit is 1E-8. For more reliable information on the link-error rate, use the g821 demod command.
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51
bert
FT1
E1
FE1
Bit-Error Rate Test of Data Interface
Usage: bert [linelist] [-e [pattern] | -d | -i [error] | -lp | -le | stats ]
is used for diagnostic purposes by causing the selected line of the
FT1/E1 interface port lines to output a user-selectable pseudo-random
bit sequence, either framed or unframed. This command also allows the
user to measure the bit error rate, number of errors, etc. This command
tests all T1/E1 timeslots without regard to the timeslot command’s configuration.
bert
linelist—List of local line interfaces. Can be single line number or linename (see linename command), comma-separated list of line numbers or
linenames, a range of line numbers (for example: 1-4), or if linelist is not
given, all lines will be tested.
NOTE: The hyphen is part of the argument string and must be included
for the command to function.
Subcommands:
Control—
-e
Enable bert generation/monitoring for line(s)
Can be immediately followed by the test pattern index value
(See -lp below). If none is included in the command, the
last-used pattern will be implemented.
-d
Disable bert generation/monitoring for line(s)
-i
Inject error. Index specifying type of error to inject. If no error
is specified, last error selected is used.
Reference—
-lp
List available pseudo-random bit patterns
(See Table 16 on Page 52 for options.)
-le
List available errors to inject
(See Table 17 on Page 53 for options.)
stats Display
bert statistics
Table 16. Pseudo-Random Bit Patterns
52
Index
Description
Data
Inversion
Unframed 2^11 (Factory Default)
No
Unframed 2^15
Yes
Unframed 2^20
No
Unframed 2^23
Yes
Unframed 2^11 with 7 zero limit
No
LEDR Series Installation & Operation Guide
MDS 05-3627A01, Rev. C
Table 16. Pseudo-Random Bit Patterns
Index
Description
Data
Inversion
Unframed 2^15 with 7 zero limit
No
Unframed 2^20 with 14 zero limit
(QRSS/QRS/QRTS)
No
Unframed 2^23 with 14 zero limit (non-standard)
No
Framed 2^11
No
Framed 2^15
Yes
10
Framed 2^20
No
11
Framed 2^23
Yes
12
Framed 2^11 with 7 zero limit
No
13
Framed 2^15 with 7 zero limit
No
14
Framed 2^20 with 14 zero limit
(QRSS/QRS/QRTS)
No
15
Framed 2^23 with 14 zero limit (non-standard)
No
Table 17. Errors to Inject
Index
Description
CAS multiframe (MAS) pattern error (E1 only)
Fs (T1) or MFAS (E1)
PRBS error
Change of frame alignment, 1 bit minus
Change of frame alignment, E1, 1 bit plus
CRC6 for T1, CRC4 for E1
Frame bit error...Ft, FPS, or FAS bit error depending on current
framer mode
Linecode violation
Background on BERT command:
The bit error-rate test command, bert, is used to evaluate the link
between the LEDR data interface and the customer premises equipment
(CPE). When used, the LEDR radio will send a test pattern out of the
LEDR FT1/E1 Data Interface lines towards the CPE while simultaneously attempting to receive the same pattern back from the CPE. For
example, you can loopback the CPE’s external data device’s I/O, then
issue a bert command to the LEDR radio to check the integrity of the
wire connection. The test pattern can be user-selectable. (See bert command Options above for further information.)
NOTE: The bert command will not test or evaluate the integrity of the
LEDR radio link. (See “BENCH TESTING OF RADIOS” on
Page 124 for further information.)
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53
NOTE: When operating FT1 or FE1 interfaces, this command tests all
T1/E1 timeslots without regard to the timeslot command’s
configuration.
boot
Boot from Active/Archive Software
Usage: boot [<1|2|-s|-o>]
This command is used to view or change the radio’s active software
image. If boot is entered alone, the currently active firmware image (1 or
2) is displayed. A selection of 1 or 2 after the command (e.g., boot 2) initiates a reboot from that image. (A message appears to confirm that you
wish to reboot the radio firmware.) Upon reboot, the radio and all radio
functions are restarted in a manner similar to turning the radio power off
and then on again. The radio is taken out of service until it re-initializes,
and the link loses synchronization until the reboot process completes
and the demodulators at both ends reacquire the radio signals.
A choice of software images allows booting an alternate version of radio
software. The ability to have two radio-resident software images allows
radio software reprogramming over-the-air and the ability to restore
operation to the original software if required.
Subcommands:
buzzer
Boot from Image 1
Boot from Image 2
-s
Boot from the active (same) image
-o
Boot from the inactive (other) image
Buzzer
Usage: buzzer
This command briefly sounds the radio’s piezo buzzer for testing. It
should be used only from the CONSOLE Port.
Example Response:
buzzer: Starting test
buzzer: Test complete
clkmode
530
Clock Mode (Subrate Radios Only)
Usage: clkmode []
This command displays or sets the source of the radio’s transmit clock.
For synchronization purposes, several different clocking schemes can
be used. See “Transmit Clock Selection (Subrate Radios Only)” on
Page 23.
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Subcommands:
internal—Internal oscillator sources TC; RC derived from far end
of radio link (default).
exttx—ETC accepted from external equipment on EIA-530 interface; RC derived from far end of radio link.
looped—Recovered RF (RX) clock; TC is synchronized to RC;
RC is derived from far end of radio link. Note: Do not use looped
clocks at both ends of any radio link.
extdce—ETC and ERC are accepted as inputs on the EIA-530
interface.
FT1
E1
NOTE: Earlier versions of the software may display the Clock Mode
as NORMAL instead of INTERNAL.
Firmware Version 2.4.0 and Later – Use the clkmode command to
determine which port has been selected to drive the timing at the interface.
Firmware Version 2.3.1 and Earlier – This command allows the various possible clock sources to be prioritized. As timing sources become
available, the highest-priority source will be chosen by the system. If
attaching to the network or equipment that provides timing, a universal
form of the command would be clkmode 1 2 3 4 internal. If attaching to
equipment that will provide looped-back timing, a universal form of the
command would be clkmode remote internal. If both ends of the link provide looped timing, the internal clock source should be selected at one
end by entering clkmode internal. Note that at least one end of the link
should have either network or internal timing selected.
NOTE: Firmware versions 2.3.1 and earlier, require that this parameter
be properly configured for correct operation of the link. More recent
firmware versions do not require that this item be manually configured.
However, the clkmode command may still be used to determine which
port is being used to drive the timing.
Firmware Version 3.0.0 and Later– The clkmode command applies
only to the EIA-530 interface.
coffset
Carrier Offset of Radio Modem
Usage: coffset
This command displays the Modem Carrier Frequency Offset.
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55
con
Console port configuration on LEDR front panel
Usage: con (baud [300|1200|2400|4800|9600|19200|38400|115200]) (parity
[none|even|odd])
This command sets or displays the CONSOLE Port’s operating parameters. The CONSOLE Port data rate is set or displayed using the baud subcommand. The parity is set or displayed using the parity subcommand.
The default setting is 9600 bps, no parity, 8 data bits and 1 stop bit.
config
Configuration
Usage: config [get|send|getall] [filename|console] [hostIP]
This command is used to get or send a radio configuration file.
The radio stores its configuration data in a file that you can download
using the config send command. The output can be directed to a file or to
the NMS window, either in a Telnet session or a serial NMS session.
The config send command allows sending the configuration file over the
Ethernet management channel and storing it on a PC running a TFTP
server.
Subcommands:
send—Upload entire radio configuration file to host (includes all
radio-specific data)
get—Download radio configuration file from host (DOES NOT
download radio-specific data)
getall—Download entire radio configuration file from host
(including all radio-specific data)
Radio-specific data includes IP address, network settings, frequencies,
target power thresholds, calibration data, and IP routing table.
Command Example: config send config.txt 192.168.1.14
This sends the configuration file to a TFTP server running on host
192.168.1.14 and stores it as a file called config.txt.
date
Date
Usage: date [MM/DD/YYYY]
This command sets or displays the date and time of the radio’s internal
real-time clock. The real time clock operates from an internal lithium
battery so it is running even if the radio has no DC power connected. The
date format may also be set or displayed from this screen for one of three
formats: U.S., European, or generic.
The real time clock is fully compliant with year 2000 standards.
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Subcommands: date format [<1-3>]
Date Format 1: mm/dd/yyyy (All numbers)
Date Format 2: dd/mm/yyyy (All numbers)
Date Format 3: dd-MON-yyyy (English abbreviation of month)
Example Response: date: 07-JUN-1999 08:11:30
dtren
DTR Handshaking
Usage: dtren []
The dtren command sets or displays the status of the DTR (handshaking)
input.
Example Response: dtren: on
ethernet
Ethernet Port’s Hardware Address
Usage: ethernet
This command displays the fixed hardware address of the radio’s
Ethernet port. This address is globally unique; it is assigned at the factory and cannot be changed.
events
Events
Usage: events [subcommand] []
Subcommands:
pending
filter [event#] [count]
init
desc []
This command allows viewing the pending events (pending), suppressing the notification of particular events (filter), initializing events
processing (init) and display of event descriptions (desc). To turn off logging (notification in the event log) for a particular event, the filter count
value should be set to zero.
Events 135-138 are remote alarm in [1-4], respectively, which reflects the
event state of the alarm in [1-4] of the remote-located radio at the other end
of the RF link.
Example Response:
events {events}: -DEMOD_ACQUISITION (Event #27)
events: Event#0 Filter count=1
events {init}: The event log has been re-initialized
events {desc}: Event#40 DescriptionIO2_DIG_REM_LPBACK
evmap
MDS 05-3627A01, Rev. C
Event Mapping (for Alarm Output and LEDs)
LEDR Series Installation & Operation Guide
57
Usage: evmap [subcommand] [event #] [arguments]
This command sets or displays which radio system events cause alarm
indications on the front panel LEDs or the rear panel ALARM I/O connector. The user can rename the alarm events, but they cannot be
deleted, nor can new ones be created.
The subcommands specify which output will be asserted (led or aout)
upon occurrence of an event #. Multiple outputs can be specified with
spaces between them. The dump option allows determining the current
event mapping for all of the events or, optionally, a specified numeric
range of events.
Events 135-138 are remote alarm in [1-4], respectively, which reflects the
event state of the alarm in [1-4] of the remote-located radio at the other end
of the RF link. Use the event filter counter to enable each particular
event. Use evmap and map to alarm output contact when necessary.
Subcommands:
led [ioalarm|txalarm|rxalarm|alarm|none]—Maps front panel LED(s)
to an event.
aout [none|1|2|3|4]—Maps
dump []—Display
an alarm output(s) to an event.
the LED and alarm output mappings
for all events.
Example Response:
evmap: Event #0 LED alarm
evmap: Event #0 Alarm Output NONE
See Figure 8 for reference to the Front Panel LEDs. Refer to Alarm—
Rear Panel on Page 131 for the pinouts of the ALARM I/O connector and
Disabling the Front Panel Alarm LED for Unused E1 Option Ports on
Page 89 for further information.
fec
Forward Error Correction Statistics
Usage: [fec ]
This command displays corrected bytes and uncorrectable FEC block
errors.
Example Response:
freq
fec: 1812992 Correctable Bytes
fec: 2 Uncorrectable Blocks
Frequency (of TX & RX Channel)
Usage: freq [] [] []
This command sets or displays the transmit and receive frequency.
Example Response:
58
freq {TxFreq}: 942175000 Hz
freq {RxFreq}: 944175000 Hz
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fset
Frequency Setting
Usage: fset [] []
This command sets the absolute frequency limits of the transmitter and
receiver.
Example Response
fstruct
FT1
E1
FE1
fset {Tx MinFreq}: 1350000000 Hz
fset {Tx MaxFreq}: 1535000000 Hz
fset {Rx MinFreq}: 1350000000 Hz
fset {Rx MaxFreq}: 1535000000 Hz
Frame Structure
Usage: fstruct [linelist] [mode <0-7|none>]
This command is used to set or display the span(s) frame structure. The
[linelist] variable represents a list of line interfaces. This entry can be
either a single line number or line name (see linename command), a
comma-separated list of line numbers or line names, a range of line
numbers (i.e., 1-4), or if linelist is not given all lines.
In general, this parameter should be configured to match the frame
structure used by the customer premises equipment. The fstruct command also controls the generation of performance report messages in
ESF modes. In E1 radios, an unframed mode is available by issuing the
command fstruct mode 8.
In Fractional-E1 mode timeslot 0 is always sent, and for fstruct modes 4
through 7, timeslot 16 must be added to the payload list for proper operation.
Table 18 shows a list of line mode values for T1 interfaces and Table 19
for E1 interfaces.
Table 18. T1 Frame’s Line Mode Values
Value
MDS 05-3627A01, Rev. C
Mode
FT only (default)
ESF
ESF + PRM
SF
SF + JYEL
ESF + CRC
ESF + CRC +PRM
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59
Table 19. E1 Frame’s Line Mode Values
Value
g821
Mode
FAS only (default)
FAS + BSLIP
FAS + CRC
FAS + CRC + BSLIP
FAS + CAS
FAS + CAS + BSLIP
FAS + CRC + CAS
FAS + CRC + CAS + BSLIP
Raw, unframed, transparent mode.
G.821 Information
Usage: demod io1|io2|io3|io4|all [clr]
This command is used to show or reset the radio’s G.821 information.
The LEDR family of radios support the ITU G.821 recommendation for
display of four categories of statistical availability information: available seconds, errored seconds, severely errored seconds, and unavailable seconds.
Example Response:
group
Demodulator: ERROR FREE
Savail: 1036
Sunavail: 0
ES: 0
SES: 0
Group Number in LEDR System
Usage: Group [<0-99>]
This command sets or displays the network group in which the radio is
operating.
Example Response: group: 1
In a typical system, all the radios would operate in the same group,
allowing the flow of network-management and orderwire activity
between radios and from one radio link to any other in the system. At a
repeater site, all radios must be set to the same “group number” (and not
group zero) for this flow of information to take place. Setting group
numbers differently in repeater systems isolates links from each other
from a network-management perspective, allowing segmenting networks and controlling the flow of network-management information.
Across a radio link, groups can differ from each other; only radios physically connected by Ethernet cables to each other or to the same hub
must have the same group number to intercommunicate.
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Setting a radio’s group to zero prohibits all network management traffic
from flowing to and from that radio’s Ethernet port.
help or?
Help for Users
Usage: help
This command can be used alone, to list all available commands, or with
a specific command, to provide syntax assistance. Entering help before
or after a command will display the usage and possible subcommands of
the command. The character? may also be used to obtain help.
http
HTTP Server in LEDR Radio
Usage: http
Displays the status of the radio’s internal HTTP server accessible
through the radio’s ETHERNET Port. The HTTP server supports
browser-based management. Use the http command by itself to verify
the server is running and http start command to reboot the server.
icopy
Image Copy
Usage: icopy []
This command is used to copy the active software image to the inactive
software image.
Each radio stores two independent firmware files that control the radio’s
operation. The radio uses one of the files as the active software, which
is running. The other software file is inactive and is not running. The
ability to have two firmware images allows firmware reprogramming to
be done over-the-air and provides the ability to restore operation to the
original software if required. The icopy command allows copying all, or
a selected subset, of the regions of the active image to the inactive image
area. This is typically used to update the inactive image after loading
new firmware and rebooting the radio from the new image.
To view or change the active firmware image see “boot” on Page 54.
idlepat
FT1
Idle Pattern
Usage: idlepat [] [slots ] 
E1
FE1
MDS 05-3627A01, Rev. C
This command is used to set or display the bit-pattern used in the idle
timeslots. Some equipment requires a particular pattern. To set the bits
to all ones, use the command idlepat ff. To set the bits to a zero followed
by seven ones, use the command idlepat 7f. This command does not apply
to subrate models.
LEDR Series Installation & Operation Guide
61
Argument Definitions:
linelist—Represents
a list of line interfaces. It can consist of a single
line number or linename, a comma separated list of line numbers or line names, a range of line numbers (i.e., 1–4) or, if
linelist is not given, all lines. See Table 18 on Page 59 for a list
of line numbers.
slotlist—A
list of timeslots consisting of a single slot number,
comma separated list of slot numbers, or a range of slot numbers (i.e., 2-8).
pattern—A
info
2 hex digit value (default value is 17).
Information as Selected by User
Usage: info [] []
info clear []
This command is used to program information into (or clear it from)
radio memory that is particular to the radio site or installation. The information is intended for identification and memorandum needs.
Five text fields are provided. The owner’s name string is limited to 10
characters. The description, contact, location, and name text fields are
limited to 254 characters. Any standard, printable ASCII characters are
allowed. The description field is programmed at the factory and is not
user-definable.
To display the owner’s name text field enter info owner. To display the
contact information enter info contact. To display the name information
enter info name. To display the location information enter info location.To
display all the parameters enter info.
To change the info text, enter text after info owner or other info field
name.
interface
530
Interface for User Data
Usage: interface [e1|t1|530]
FT1
E1
FE1
This command is used to set or display the payload data interface. If an
optional data interface board is installed, the user may select between
the T1 or E1 interface modes. The system will recommend a reboot and
provide a prompt to do so.
Example Response:
interface {Line}: e1
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NOTE: 1E1 through 4E1 data rates are not supported when using the
EIA-530 interface. The maximum EIA-530 data rate is 768
kbps.
interleave
Interleave
Usage: interleave [1-12]
This command is used to set or display the interleave depth. Range:
1–12. Default: 12. (Actual values are 1, 2, 3, 4, 6 and 12.) The interleave
setting must match at both ends of a radio link, or the link cannot synchronize regardless of any other radio settings or signal strength. Larger
interleave settings cause longer link latency; in latency-sensitive applications, interleave value should be reduced to as small a value as is possible while maintaining good link performance (See the g821 demod
command).
Example Response:
interleave: 1
Background:
In digital communications, interference often occurs in the form of short
noise bursts. These bursts normally corrupt a series of consecutive bits.
Interleaving is a digital algorithm that allows Forward Error Correction
(FEC) to better handle bursts of noise. Interleaving reorders the data so
that the symbols that would normally be neighbors in a given block are
spread among multiple blocks. FEC works on a block of data of a specific size and can properly correct errors as long as the number of errors
is small enough. With interleaving, the number of errors that occur
within a single block is reduced, thereby allowing the FEC to more
effectively correct burst errors.
The value of the interleaver function should not be changed unless there
are latency limitations for the radio link. If low latency is required, then
the interleave can be changed, but the ability to correct for the influence
of burst-noise on the BER will be reduced.
ip
Internet Protocol Settings
Usage: ip [subcommand] []
Subcommands:
address [x.x.x.x]
netmask [x.x.x.x]
gateway [x.x.x.x]
IP port [ETH|AIR]
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63
This command sets or displays the Internet Protocol (IP) settings for the
LEDR radio. The subcommands allow you to set the IP address, IP netmask, IP gateway, or IP port. The port setting determines whether IP communication to and from a particular radio occurs over the radio link or
via a PC (or other networked device, such as a router) directly connected
to the radio’s ETHERNET port. See “Network” on Page 39 for additional
information.
Example Response:
iverify
IP Address: 10.2.142.143
IP Netmask: 255.255.0.0
IP Gateway: 0.0.0.0
IP Port: ETH
Image Integrity Verification
Usage: iverify [image <1|2>] []
This command is used to determine the data integrity of the two firmware image files that reside in the radio. (See also icopy, above.)
Example Response:
iverify: Image has been verified
lcd
Liquid Crystal Display Test
Usage: lcd []
This command starts a two-part test of the radio’s front panel LCD.
When lcd is first entered, the display should appear with all blocks black.
When the RETURN key is pressed, the screen should change to completely blank.
led
Light Emitting Diodes (LEDs on Front Panel)
Usage: led [] []
This command is used to test the front panel LEDs. If no argument is
given, all front panel LEDs (except POWER) should flash in sequence.
Press Control-C to end the test. (See “Disabling the Front Panel Alarm
LED for Unused E1 Option Ports” on Page 89 for further information.)
Command Example:
led alarm on
Returns:
led: Alarm LED ON
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line
FT1
E1
FE1
FT1
Attributes of lines (cables) used with the LEDR’s T1 or E1 Interface.
This command is used to set or display the internal pulse template selection used by the LEDR interface to compensate for signal distortion created by various lengths and types of interface cables.
The [linelist] variable represents a list of line interfaces. It can consist of
a single line number or line name, a comma-separated list of line numbers or line names, a range of line numbers (i.e., 1–4), or if linelist is not
given all lines will be displayed. See Table 18 on Page 59 for a list of
line numbers.
Usage For T1: line [linelist] [cable length<0–4>] [spec]
T1 interfaces require setting of a minimum of two variables: cable
length and ITU cable specification. Table 20 show specification options
and Table 21 the lists values used for various lengths of standard 100 Ω
twisted pair cables.
Table 20. ITU Cable Specifications—Subcommand [spec]
Specification
g.775 (Default)
i.431
Table 21. T1 Cable Length Values—Subcommand [cable length]
Value
MDS 05-3627A01, Rev. C
Line Length (Meters)
Line Length (Feet)
0.3 to 40 (Default)
1 to 133 feet (Default)
40 to 81
133 to 266 feet
81 to 122
266 to 399 feet
122 to 163
399 to 533 feet
163 to 200
533 to 655 feet
LEDR Series Installation & Operation Guide
65
E1
FE1
Usage For E1: line [linelist] [spec]
The only cable specification needed for E1 is the ITU cable type.
Table 22 lists values used for various specifications for standard 120 Ω
ITU-T G.703 cables.
Table 22. E1 Cable Specifications—Subcommand [spec]
Specification
g.775 (Default)
i.431
Command Example:
LEDR> line
Returns:
line {LINE1} {cable}: ITU-T G.703 120 Ω Twisted Pair
{spec}: i.431
line {LINE2} {cable}: ITU-T G.703 120 Ω Twisted Pair
{spec}: g.775
line {LINE3} {cable}: ITU-T G.703 120 Ω Twisted Pair
{spec}: g.775
line {LINE4} {cable}: ITU-T G.703 120 Ω Twisted Pair
{spec}: g.775
linecode
FT1
E1
FE1
Line Code
Usage: linecode [linelist] [B8ZS|AMI|HDB3]
This command sets or displays the radio’s linecode (T1: B8ZS or AMI;
E1: HDB3 or AMI).
The [linelist] variable represents a list of line interfaces. It can consist of
a single line number or line name, a comma-separated list of line numbers or line names, a range of line numbers (i.e., 1–4), or if linelist is not
given all lines will be displayed. See Table 18 on Page 59 for a list of
line numbers.
The most typical Fractional-T1 selection is to choose B8ZS for all ports
by entering linecode b8zs and E1 interfaces choose HDB3 for all ports by
entering linecode hdb3.
Example Response:
linecode: HDB3
linemap
Line Mapping
Usage: linemap [maplist]
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FT1
E1
FE1
This command is used to set or display the current span mapping configuration for E1 and T1 configurations. The maplist variable consists of
from 1 to 4 alpha-numeric characters specifying line interface to span
mapping. Valid numbers are 1–4. Valid span characters are a–d.
Example: Entering linemap 1d 2b 3a 4c causes the following:
maps line 1 to span d
maps line 2 to span b
maps line 3 to span a
maps line 4 to span c
Figure 16 shows the example pictorially. There are no restrictions of
which lines are mapped to which data channel spans.
Invisible place holder
LEDR LINE
(RJ-45 JACK)
E1/T1 SPAN
Span A
Span B
Span C
Span D
Figure 16. Example of Linemapping
NOTE: The cluster of four RJ-45 jacks on the rear of the radio is coded
from left to right as 1, 2, 3 and 4 as viewed from the outside of the
chassis.
linename
FT1
E1
FE1
Line Name
Usage: linename  
This command is used to set or display meaningful names of up to 16
characters to the four possible line interfaces.The [linelist] variable represents a list of line interfaces. It can consist of a single line number or
line name, a comma separated list of line numbers or line names, a range
of line numbers (i.e., 1–4) or, if linelist is not given, all lines. See
Table 18 on Page 59 for a list of line numbers.
The namelist variable consists of a list of names. It can consist of a
single name or a comma/whitespace-separated list of names. Names can
be up to 16 characters long.
linerr
Line Errors
Usage: linerr [linelist] [on|off]
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67
FT1
E1
FE1
log
This command measures and displays the line performance between the
radio and customer equipment. Entering the command linerr on will initialize the line error measurement feature. The [linelist] variable represents a list of line interfaces. It can consist of a single line number or line
name, a comma-separated list of line numbers or line names, a range of
line numbers (i.e., 1–4), or if linelist is not given all lines will be displayed. See Table 18 on Page 59 for a list of line numbers.
Log of Events
Usage: log [subcommand] []
Subcommands:
view [critical|major|minor|inform]
clear
send [filename] [hostIP]
This command is used to display and manage the event log file. Without
a subcommand, the complete log file will be displayed one page at a
time. If you are interested in less than the full report, use one of the following subcommands:
view—Sets
or displays the types of events to be displayed.
clear—Resets
the event log and purges all events from memory.
send—Uploads the event log information to an IP address using TFTP
protocol in a way similar to the config command. (See config command
on Page 56.)
NOTE: When setting up a link for the first time, after powering up the
unit, you may want to clear the event log. After logging in as
SUPER, enter the command log clear.
login
Log Into the CONSOLE Port
Usage: login [username]
This command allows access to configuration and diagnostics information as allowed by the radio system administrator. You can shorten the
login sequence by following the login command with the user/account
name (username).
Example:
LEDR> login
Returns:
Username>
Type: fieldserv (or appropriate user name)
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Returns:
Password>
Type: (password)
NOTE: User names and passwords must not exceed eight characters
and are case sensitive. Do not use punctuation marks.
See user command on Page 86 for more information on user access
levels.
NOTE: Only one user can be logged in through the CONSOLE Port at
a time. Any new login will close the previous user/account.
Other users can login simultaneously through the ETHERNET
Port or front panel.
logout
Logout
Usage: logout
This command is used to log out a user.
Subcommands:
loopback
Loopback Functions
The loopback command is used to set or display the loopback mode that
can be used for diagnostic purposes. Entering loopback without any
parameters displays the current loopback mode.
Various data loopback modes can be used for diagnostic purposes. To
loop back Line Interface 1 towards itself, use loopback iol 1. To loop back
all line interfaces towards themselves and test the T1 option, use loopback local. To loop back all data at the remote site towards the RF path,
use loopback remote.
Entering loopback without any parameters displays the current loopback
mode.
Usage 1 for Fractional-T1:
loopback [none|rf|local|remote|iol [linelist]|ior [linelist] ]
Usage 1 Subcommands:
FT1
E1
FE1
MDS 05-3627A01, Rev. C
iol—The iol subcommand, for “I/O local,” refers to the local line loopback.
local—Enables
a local digital loopback mode. With this test, incoming
bits on the EIA-530 interface are sent back out the radio’s DATA connector before the modem module. This can be used to verify proper
interconnection between the radio and the connected equipment. None
LEDR Series Installation & Operation Guide
69
of the radio’s RF circuitry is involved in this test. (This description
covers only EIA-530 operation.)
For T1/E1 operation, the local subcommand enables a local digital MUX
loopback in the radio transceiver’s FT1 Interface Board before going out
to the main transceiver board.
none—Disables
all loopback operation. This is the mode for normal
point-to-point operation.
remote—EIA-530
Operation: Instructs the radio at the other end of the
link to “echo” all of the data it receives. This is an effective way of
testing the entire communications system, including the transmission
path over the air. (In the event of a communications failure with the
remote radio, the message “Remote Error” is displayed, and no loopback mode is selected.
T1/E1 Operation: The remote subcommand mimics the ior subcommand
described below.
rf—Enables an RF loopback mode. This mode allows testing of the local
radio transceiver’s transmit and receive chain.
NOTE: RF loopback testing is a valuable diagnostic tool, but it should
not be considered an exhaustive test of the transceiver. In some
cases, interaction between the transmit and receive
phase-locked loops (PLLs) can occur, causing erroneous
results during testing. Changing the transceiver’s RF output
setting may resolve these problems. Also, in some configurations, insufficient signal strength for RF loopback testing may
exist.
In addition, on all LEDR radios except the LEDR 1400 Series,
the transmit and receive frequencies must be within the same
subband for RF loopback to function.
Variables:
ior—An
abbreviation for “I/O remote”, refers to the remote line loopback. Remote loopback port selection is relative to the local port. The
radio link will translate any line mapping to select the correct physical
remote port to loop back, based on the selected local port.
linelist—Represents a list of local line interfaces. It can consist of a single
line number or line name, a comma-separated list of line numbers or line
names, a range of line numbers (i.e., 1–4), or if linelist is not given all
lines. See Table 18 on Page 59 for a list of line numbers.
timeout—The timeout variable may be set between 0 minutes (never time
out) and 60 minutes.
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FT1
E1
FE1
Usage 2: loopback [inb|outb] [linelist] [on|off] [-u ] [-d ]
Usage 2 (E1) subcommands:
inb—Refers
to the inband loopback configuration.
outb—Refers to the outband Extended Super Frame (ESF) loopback
configuration.
linelist—Represents a list of local line interfaces. It can consist of a single
line number or line name, a comma-separated list of line numbers or line
names, a range of line numbers (i.e., 1–4) or, if linelist is not given, all
lines. See Table 18 on Page 59 for a list of line numbers.
on|off—To
turn the loopback feature on or off.
-u —Allows
setting of the inband|outband loopback upcode.
The inband code consists of 1-7 bits, binary format.
Example: 00001
-d —The
subcommand allows setting of the inband|outband loopback downcode.
The outband code consists of 6 bits within the 16 bit ESF data
link codeword.
Example: 000111
within 16 bit codeword: 0<000111>0 11111111
model
Model Number
Usage: model
This command displays the radio model number. This information is
programmed at the factory and cannot be changed.
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71
modem
Modem
Usage: modem [matrix id] [+cas]
This command sets or displays the radio modem modulation type and
data rate. Table 23 shows the alphanumeric codes that can be entered for
fullrate radios and Table 24 for codes for subrate radios. Note that the
E1 selections are only valid on fullrate radios.
Table 23. Modem Command Arguments for E1 (Fullrate) Radios 1
DATA RATES
Modulation
Type
1xE1
2xE1
3xE1
4xE1
QPSK
A7
—
—
—
16 QAM
B7
B8
—
—
32 QAM
C7
C8
C9
C10
1.The available selections depend on the radio’s factory programmed bandwidth.
See Table 9 on Page 22 for the allowable combinations of bandwidth, data
rates and modulation types.
Table 24. Modem Command Arguments for
EIA-530 & FT1 (Subrate) Radios1
DATA RATES
Modulation
Type
64
kbps
128
kbps
256
kbps
384
kbps
512
kbps
768
kbps
QPSK
A1
A2
A3
—
—
—
16 QAM
B1
B2
B3
B4
B5
B6
32 QAM
—
—
—
—
—
C6
1.The available selections depend on the radio’s factory programmed bandwidth.
See Table 9 on Page 22 for the allowable combinations of bandwidth, data
rates and modulation types.
Command Examples:
To set 32 QAM with 1xE1, enter modem C7
To set 16 QAM/384 kbps, enter modem B4
Special-Order Argument
NOTE: The cas command functions only in radios equipped with
either the FT1 or FE1 Interface and user firmware of revision
3.0 or higher.
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cas—Set or display the Channel Associated Signaling (CAS) status for
Fractional-T1 or Fractional-E1 operation. The available selections are
modem +cas (on) and modem -cas (off). This command provides for FT1
Robbed-Bit Signaling bits to pass over the link. In the FE1 case, this
command, in conjunction with the fstruct command, ensures the proper
handling of the timeslot 16 signaling bid.
FT1
FE1
Network
network
Usage: network
This command displays the radios that can be reached via the Service
Channel for Orderwire and Element Management System (EMS) diagnostics.
Example Response:
Network
Address
10.2.142.148
10.2.200.196
passwd
Netmask
255.255.0.0
255.255.0.0
RF
Hops
Ethernet
Hops
Received
on Port
LPBK
AIR
Owner
Tech Serv 1
Tech Serv 2
Password
Usage: passwd
This command is used to change the password for the user currently
logged in. A maximum of 8 characters is allowed, and it is case sensitive.
ping
Ping IP Address (Send ICMP Echo Request)
Usage: ping [ip address] [reps]
This command is used to verify the accessibility of any IP address on the
network to determine availability and measure network response time.
This commands requires proper IP Routing and IP connectivity.
ipaddress—IP
reps
address to which you will send the request
- Number of requests-to-send (default = 1, max = 1000)
Example:
LEDR> ping 10.2.233.12 5
Example Response:
PING 10.2.233.12: 56 data bytes
64 bytes from 10.2.233.12: seq=1, ttl=255, rtt=49ms
64 bytes from 10.2.233.12: seq=2, ttl=255, rtt=6ms
64 bytes from 10.2.233.12: seq=3, ttl=255, rtt=9ms
64 bytes from 10.2.233.12: seq=4, ttl=255, rtt=33ms
64 bytes from 10.2.233.12: seq=5, ttl=255, rtt=12ms
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73
pll
Phase Locked Loop
Displays several key frequency control parameters, including the Minimum frequency step, the reference frequency, oscillator output, current
TX & RX frequencies, and TX/RX PLL status.
Example Response:
pll:
Min Freq Step = 25000 Hz, Reference = 400000 Hz, ICPO = 1600 uA
Tx Freq = 438075000 Hz, Rx Freq = 428075000
Tx PLL Status: Locked
Rx PLL Status: Locked
pmmode
Power Measurement Mode
Usage: pmmode 
This command is used to generate an unmodulated carrier on the transmitter frequency for the purpose of measuring RF output power or frequency stability using a spectrum analyzer.
Example Response:
pmmode: off
NOTE: Enabling the power measurement mode (pmmode on) will take
the local link down (out-of-service).
rdnt
Redundant (Protected Operation)
The rdnt command is used to manage protected operation of the LEDR
radio and display operating status.
Usage: rdnt [subcommand] [arguments]
Subcommands:
active
default
hitless
ip
mode
nsd
status
swxcvr
temp
mode
The following subcommands are divided into two groups: read only and
read and set.
Read Only
active—Shows
whether the currently selected transmitter is active or
inactive.
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default—Displays
whether the radio is the default radio in a protected
configuration.
status—Protected
status of this radio and the sibling radio.
Read & Set
hitless—Sets or displays the hitless (error-free) switching status of the
receivers. It can be enabled or disabled using the hitless on|off command.
In protected operation, either receiver (regardless of which transmitter
is active) can provide data to the user data port(s) in hitless mode. In
non-hitless mode, only the receiver in the active radio provides received
data. Radios operated in a space-diversity configuration must be configured to use hitless switching.
ip—Used to set or display the IP address to be kept in the memory of this
unit of the associated (sibling) radio in a redundant pair of transceivers.
In other words, the rdnt ip setting of the top radio in a protected pair must
be set to the bottom radio’s IP address for proper switching and network-management functionality.
NOTE: The associated radio (sibling) IP address should be
programmed to the IP address of the other radio connected to
the Protected Switch Chassis. The associated radio IP address
is used by the redundant radio to share information between
the units. This address is necessary for warm-standby
switching. The associated radio IP address parameters do not
affect IP routing and forwarding, SNMP, or Telnet.
The rdnt swxcvr will not operate correctly if this parameter is
not set correctly.
mode [#]—Set or display one of three redundant operation modes
(0 = Standalone, 1 = 1+1 Hot Standby, 2 = 1+1 Warm Standby).
status—Shows the state of
This Radio and Other Radio.
both radios. Two status lines are displayed;
swxcvr—Forces
a switchover to the inactive radio transceiver. (The
newly selected unit becomes the active transceiver.) The rdnt ip parameter must be configured correctly on both radios in order for the swxcvr
command to operate correctly.
NOTE: The rdnt swxcvr command should not be used within 2 minutes
of a power-up to ensure reliable communications exist
between the two transceivers.
temp—Set or display an over-temperature threshold (final amplifier
temperature in degrees Celsius), at which temperature switchover to the
other radio occurs.
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75
nsd—Enable
or disable network self-discovery between the units in a
protected pair
Example Response for rdnt command:
rdnt {status}: This Radio = OK
rdnt {status}: Other Radio = OK
rdnt {active}: inactive
rdnt {mode}: 1+1 Hot Standby
rdnt {ip}: 10.2.233.12
rdnt {hitless}: on
rdnt {default}: no
rdnt {temp}: 50
rdnt {nsd}: on
reframe
FT1
E1
FE1
Reframe Criteria for User Interface Ports
Usage: reframe [linelist] [2of4 | 2of5 | 2of6 | CFAS | CRC]
This command is used to set or display the reframe criteria. The [linelist]
variable represents a list of line interfaces. It can consist of a single line
number or linename, a comma separated list of line numbers or line
names, a range of line numbers (i.e., 1–4), or if linelist is not given all
lines. See Table 18 on Page 59 for a list of line numbers.
For Fractional-T1:
2of4
2of5
2of6
– 2 out of 4 Fbit errors (default)
– 2 out of 5 Fbit errors
– 2 out of 6 Fbit errors
For E1:
CFAS – Consecutive FAS errors (default)
CRC – 915 CRC (rx framer only)
reprogram
Load Radio Firmware Into LEDR Radio
Usage: reprogram [subcommand] []
Subcommands:network [filename] [hostIP]
status
This write command loads the radio application software (firmware)
into the LEDR chassis from an external resource using Trivial File
Transfer Protocol (TFTP). A TFTP server must be running on the network and properly configured to serve the necessary file(s). See
“OPTION 3: Uploading Firmware from a Remote Server via Ethernet”
on Page 97 for further details.
rfocal
Transmitter RF Output Calibration Table
Usage: rfocal  
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This command starts the RFOUT Calibration Sequence and should only
be used when directed by MDS factory personnel.
CAUTION:
This command is used to recalibrate the internal transmitter power output metering circuitry and may affect
the accuracy of the power output level measurement.
Contact the Technical Services Department at MDS
for further instructions before using this command.
Ask for technical publication, Retuning Procedure for
LEDR II Radios, P/N 05-3633A01.
Recalibration may be necessary if the radio’s transmitting frequency has been significantly changed. For the
LEDR 400 and 900 radios, this is generally a change of
more than two radio channels. In addition, it is very
important to verify the power calibration is incorrect on
the new frequency by measurement with a calibrated
external wattmeter before using this command.
The radio frequencies of the LEDR 1400 radio can be
changed without impacting the accuracy of the power
metering circuit’s calibration.
Example Entry: rfocal
Example Response:
Region 0
Index 0, Rfout = 18 dbm, Gain = 17
Index 1, Rfout = 20 dbm, Gain = 28
Index 2, Rfout = 22 dbm, Gain = 47
Index 3, Rfout = 25 dbm, Gain = 79
Index 4, Rfout = 27 dbm, Gain = 110
Index 5, Rfout = 30 dbm, Gain = 170
Index 6, Rfout = 32 dbm, Gain = 210
rfout
RF Output Level Measurement
Usage: rfout
This command displays the transmitter RF power output in dBm. See
“Watts-dBm-Volts Conversion” on Page 132.
rlogin
Remote Login
Usage: [} []
The rlogin command is used to login to a remotely located radio via the
CONSOLE Port. It can be used to log into any radio that appears in the
network command display.
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77
route
Routing Tables for IP
Usage:
route [command [destination] [mask netmask] [gateway] [port]]
The route command is used to add, delete or modify the IP routing table
entries. Other radios in the network are automatically added to the
routing table using the radio’s “Network Self-Discovery.” Routing IP
traffic to other devices via the radio’s management channel can be performed by adding routes to the radio’s routing table.
Once the IP configuration is set using the ip command (Page 63), several
routing entries will appear in the routing table. The first of these routes
is the default route which has a destination address of 0.0.0.0. This route
is used when a more appropriate route is not available. Thus it becomes
the “catch-all” route. The second route that will appear is the default network route. This route has a destination address calculated by “anding”
the IP address and subnet mask together. The Next Hop address of this
entry will be the default gateway configured using the ip command and
the Interface will be the default port. This route is used to tell the radio
how to reach its base network.
The third route that is added has a destination address of 127.0.0.1. This
is known as the loopback route and is used when the radio sends a packet
to its own IP address.
Primary Commands:
print
—Show the current IP routing table
add [address] mask [netmask] [gw] [port]—Add/Change
gw is
port
a gateway IP address
is specified as either “ETH” or “AIR”
delete [address] mask [netmask] [gw]—Delete
gw
a route
a route
is a gateway IP address
stored—Display
flush—Deletes
all user-added stored routes
all stored routes
destination—Specifies
the host to send command
Command Arguments:
mask—Where
the mask keyword is present, the next parameter is
interpreted as the netmask parameter.
netmask—Specifies
a sub-net mask value to be associated with this
route entry.
gateway—Specifies
78
gateway IP address
LEDR Series Installation & Operation Guide
MDS 05-3627A01, Rev. C
port—Specifies
IP port, either “ETH” or “AIR”
Example 1 Entry:
LEDR> route add 10.2.150.1 mask 255.255.255.255 10.2.150.101 air
Example 1 Response:
route: Route added
Example 2 Entry:
LEDR> route stored
Example 2 Response:
DestinationNet MaskNext HopInterface
10.2.150.1255.255.255.25510.2.150.101AIR
10.2.140.0255.255.255.010.2.227.51ETH
Example 3 Entry:
LEDR> route print
Example 3 Response:
DestinationNet MaskNext HopInterface
0.0.0.00.0.0.0 0.0.0.0ETH
10.2.140.0255.255.255.010.2.227.51ETH
10.2.150.1255.255.255.25510.2.150.101AIR
127.0.0.1255.255.255.25510.2.227.5LPBK
Background:
The LEDR Series of radios can be configured to pass IP management
traffic across the radio’s raw service channel. A process called “network
self-discovery” automatically configures IP routes between all radios in
a network (provided that the group command has been correctly configured throughout the system. (See “group” on Page 60). Also, see the arp
command on Page 51.
IP management traffic routing allows configuring and monitoring
devices other than LEDR radios using the same management channel,
providing clean integration of SNMP, Telnet, TFTP, and other IP management methods via one channel that doesn’t use any of the customer
payload bandwidth of the radio network.
Routes must be added to the radios at two points in the system to support
routing IP traffic to and from the connected devices: 1. At the gateway
end (where the management station is located), and 2. At the destination
end. Routes are added to the radios using the same convention as used
in the MS Windows, Windows NT, and DOS operating environments.
The exceptions here are that a mask and port must be specified, as well
as the target and gateway IP addresses. At both ends, the command used
is exactly the same (see command Example 1, above). In the command
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79
example given above, the route is being added at the gateway end. The
difference is that at the gateway end, the port is air, and at the destination
end, the port is eth. Routes do not need to be added at points between the
gateway and destination, because the radio network handles the routing
between radios via network self-discovery. However, in each radio, the
IP gateway must be specified as the IP address of the radio at the network-management gateway in the system.
NOTE: Gateway Settings in Connected Devices
In the connected IP-manageable device, use the local radio’s
IP address as the default IP gateway for the device.
NOTE: Routing in Protected Systems
Each route added to a protected radio must be added to both
units in the protected pair, as they are stored separately. The
radios in a protected pair proxy for one another depending on
which radio is active, so the routing functionality is unchanged
and either radio in a protected pair can be specified as the
gateway for a connected device; but if a protected LEDR radio
is removed for servicing, all the routing information must be
programmed in the remaining radio for proper IP management
functionality.
rssi
Received Signal Strength Indicator
Usage: rssi
This command displays the received signal strength. The measurement
is in dBm. Therefore, an RSSI of –80 dBm is stronger than a –100 dBm
signal.
rssical
RSSI Calibration
Usage: rssical  
This command starts the RSSI Calibration Sequence. See rfocal command on Page 76 for conditions.
CAUTION:
This command should never be used unless calibrated
test equipment has shown the radio to have inaccurate
RSSI calibration. Contact the Technical Services
Group at MDS for further instructions before using
this command.
Example entry: rssical
Example Response:
80
LEDR Series Installation & Operation Guide
MDS 05-3627A01, Rev. C
Region 0
Index 0, RSSI = –110 dbm, Gain = –104
Index 1, RSSI = –90 dbm, Gain = –40
Index 2, RSSI = –75 dbm, Gain = +1
Index 3, RSSI = –60 dbm, Gain = +28
Index 4, RSSI = –45 dbm, Gain = +61
Index 5, RSSI = –30 dbm, Gain = +97
rxlock
Receiver locked onto Remote radio
Usage: rxlock
This command displays the current modem synchronization status.
Example Response: rxlock: Modem is locked
sabytes
E1
SA Bytes in E1 Multi-framing
Usage: sabytes [linelist] [bytes ]
This command is used to set or display SA bytes in E1 multiframing.
The [linelist] variable represents a list of line interfaces. It can consist of
a single line number or line name, a comma-separated list of line numbers or line names, a range of line numbers (i.e., 1–4), or if linelist is not
given all lines. See Table 18 on Page 59 for a list of line numbers.
The bytelist variable consists 5 hex bytes (i.e., 3c) representing SA[4-8].
To keep a bytes present value when modifying higher bytes (i.e., modifying SA[7] only) use a * character in the respective byte position.
Example: sabytes 1 bytes *,*,*,3c changes only SA[7] for line 1 to 3c.
sernum
Serial Number of Radio
Usage: sernum
This command displays the serial number of the radio. The number displayed with this command matches the serial number printed on the
serial number sticker on the radio chassis.
snmpcomm
SNMP Community Names
Usage: [][]
This command is used to set or display SNMP community names. Community names are passwords that are required to match at the SNMP
management station and each radio or other SNMP agent. You can add
security to the radio system’s network management by choosing
non-default community names (listed in the example) and setting the
community names in your management software to match.
Example Response:
MDS 05-3627A01, Rev. C
snmpcomm {read}: public
snmpcomm {write}: private
snmpcomm {trap}: public
LEDR Series Installation & Operation Guide
81
snr
Signal-to-Noise Ratio of Incoming RF Signal
Usage: snr
This command displays the signal-to-noise ratio (SNR) of the received
signal in dB. The SNR is an indication of the quality of the received
signal. The higher this number, the higher the quality of the received
signal. SNR readings are invalid when the receiver is unlocked. See
rxlock command for details.
status
Status
Usage: status
This command is used to display key performance and configuration
data.
Example Response:
status {Tx Freq}:438075000
status {Rx Freq}:428075000
status {Bandwidth}:100 kHz
status {Data Rate}: 256 kbps
status {Interleave}: 1
status {Clock Mode}:internal
status {RSSI}:–78 dBm
status {SNR}:28 dB
status {Rx Lock}:Locked
status {Tx RF Out}:30 dBm
status {TxKey}: Keyed
status {Temp}:37 Degrees C
status {IP Address}: 192.168.11.49
status {IP Netmask}: 255.255.0.0
status {IP Gateway}: 0.0.0.0
svch
Service Channel Settings
Usage: svch [subcommand] []
Subcommands: baud [300|1200|2400|4800|9600|19200|38400]
csize [5–8]
parity [none|even|odd]
stop [0–2]
This command sets or displays the Service Channel settings. For further
information, see “USING THE SERVICE CHANNEL” on Page 101.
telnetd
Telnet Display or Terminate Session
Usage: telnetd [kill session]
This command is used to display or kill (terminate) the current Telnet
session(s).
Example: telnetd
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Response:
Session
Username
tns0
Rem. Addr.
ENGR
Connected
10.2.129.22
07/01/1999
@ 13:57:17
Use telnetd kill session to terminate the current session.
temp
Temperature of PA Device
This command displays the radio’s power amplifier (PA) temperature.
Example Response: temp: 35 Degrees C (PA Temperature)
Self-Test of Radio Hardware
test
Usage: test [<0–n>|]
This command starts a self-test function of the radio. There are several
separate tests that can be run individually by specifying the test number
after the command.
CAUTION
POSSIBLE
EQUIPMENT
DAMAGE
CAUTION: Do not perform a transmitter PLL test while the
radio is keyed, or the radio’s receive LNA may be damaged.
NOTE: Performing a receiver or transmitter PLL test during normal
link operation will take the link down for the duration of the
test and the re-synchronization interval.
The internal self tests are listed in Table 25.
Table 25. Internal self tests
Function Evaluated
threshold
MDS 05-3627A01, Rev. C
Number
Name
Flash Memory
flash
DRAM Memory
dram
Configuration
config
Battery
batt
Radio A- to-D Circuits
atod
Transmitter Phase Locked Loop
txpll
Receiver Phase Locked Loop
rxpll
Real-Time Clock
rtc
FPGA Logic
fpga
DSP
dsp
CODEC
10
codec
Threshold of Performance Degradation
LEDR Series Installation & Operation Guide
83
Usage: threshold []
This command sets or displays the performance degradation
threshold(s) of the LEDR radio, at which time events are logged and
SNMP traps are generated. Setting these thresholds to zero or a negative
number will disable event logging and trap generation for those parameters.
Example Response:
rssi—dBm
threshold {rssi}: 0
threshold {snr}: 0
threshold {coffset}: 0
threshold {temp}: 110
threshold {15mines}: 900
threshold {15minses}: 900
threshold {24hres}: 86400
threshold {24hrses}: 86400
level below which an RSSI alarm is generated.
snr—Value
below which a signal-to-noise level alarm is generated.
coffset—Maximum
tolerable RF carrier frequency difference between
the local LEDR unit’s transmit frequency and the incoming RF signal
from the other LEDR radio.
temp—Power amplifier temperature above which an alarm condition is
generated.
15mines—Number
of errored seconds within the last 15 minutes.
15minses—Number
of severely errored seconds within the last 15 min-
utes.
24hres—Number
of errored seconds within the last 24 hours.
24hrses—Number
time
of severely errored seconds within the last 24 hours.
Time of Internal Clock
Usage: time [HH:MM[:SS]
This command displays or sets the time of the radio’s internal real-time
clock. The radio’s real time clock operates from an internal lithium battery so it is running even if the radio has no DC power connected.
The real time clock is fully compliant with Year 2000 standards.
timeslot
FT1
FE1
84
Time Slot Assignment
Select which timeslots to transmit. This command has two uses; in
Usage 1, the timeslots can be set or displayed. In Usage 2, all pending
timeslots are committed/made active.
LEDR Series Installation & Operation Guide
MDS 05-3627A01, Rev. C
The timeslots may be different at each end of the link. They will be
monotonically mapped; that is, Slot 1 is mapped to Slot 13, Slot 2 is
mapped to Slot 14, etc. To select timeslots 1 through 12, enter the command timeslot 1-12.
Usage 1: timeslot [-d] [slotlist]
Usage 2: timeslot -c
Variables:
–d
–c
Disable timeslot(s)
Commit pending timeslots
Modifications to the timeslot list are kept pending until all available
slots have been assigned. The user can choose to commit slots when the
last available slot is added to the pending list, or by using the -c option.
(See Usage 2.)
The default action is to enable given timeslots. If no arguments are
entered, the currently active timeslots and pending timeslots are displayed.
The slotlist variable is a list of timeslots and can be a single slot number,
comma separated list of slot numbers, or a range of slot numbers (i.e.,
2-8). Timeslots can be entered in any order and are automatically configured. Extra slots will be ignored. Unassigned timeslots in the pending
list are signified by MA (must assign).
NOTE: Enough slots for the full data capacity of the modem setting
must be specified or the link will not synchronize.
NOTE: FT1 timeslots are 1–24. E1 timeslots are 0–31.
NOTE: In FE1 mode timeslot 0 is always selected. When frame structures are selected that contain CAS (fstruct 4-7) timeslot 16
must be selected.
trapfilter
Trap Filtering for SNMP
Usage: trapfilter []
This command sets or displays which events cause SNMP traps. Filtering traps is done by category. Traps that are filtered are allowed to
pass through the network-management system. (See trapmgr on Page 85
and snmpcomm on Page 81 for additional information.)
trapmgr
Trap Manager IP Addresses
Usage: trapmgr [<1-5>] []
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85
This command sets or displays the trap manager IP addresses. These are
the IP addresses of up to five network-management stations on which
SNMP manager software is operating, and to which notifications of
SNMP events (traps) are to be sent. The IP mask used for sending traps
is that set by the ip command. (See “ip” on Page 63.)
Example Response:
trend
trapmgr: 1 = 10.2.129.22
trapmgr: 2 = 0.0.0.0
trapmgr: 3 = 0.0.0.0
trapmgr: 4 = 0.0.0.0
trapmgr: 5 = 10.2.129.1
Trend of RF Performance Indicators
Usage: trend [] []
This command is used to display continuously updated readings of:
RSSI, radio temperature, RF output, signal-to-noise ratio, and FEC
errors (corrected and uncorrectable). The display can be stopped by
pressing Control-C on the terminal.
If the trend command is used by itself or with all (trend all), all associated
parameters will be reported. More than one argument can be used to display several selected items in the desired order.
NOTE: This command is not available from a Telnet session.
txkey
Radio Transmitter Keying Status
Usage: txkey [on|off]
This command sets or displays the radio transmitter status. ON indicates
the radio transmitter is keyed and transmitting. OFF indicates the transmitter is not keyed.
unitid
Unit Identification Number for Orderwire and NMS
Usage: unitid []
This command sets or displays the radio’s unit identification number.
This number is used for Orderwire signaling and by the NMS (Network
Management System). (See “USING ORDERWIRE” on Page 99.) The
factory default is the last three numbers of the unit serial number.
(1-999)
uptime
Up Time
Usage: uptime
This command displays how long the radio has been powered-on.
user
86
User Account Information
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Usage: user [subcommand] []
Subcommands:
add   
del 
perm  
pass
This command provides administrator access for setting new user
accounts and permission levels.
NOTE: The password (pass) and user names are case sensitive and
may not exceed eight characters. Two quotation mark characters ("") may be used as a “blank” password. If quotation
marks are used, the shift key or cap lock keys must be
depressed.
User permission (perm) may be set to: read (r), write (w), network (n) or
administrator (a). The privileges granted by each level are as follows:
•
Read (r) is the lowest level of user access and allows radio information to be viewed only. Changes to radio settings are not allowed.
•
Write (w) allows most, but not all radio settings to be changed.
•
Network (n) allows everything permitted by lower levels, and also
allows changes to the radio’s IP configuration.
•
Administrator (a) allows everything permitted in lower levels, and
also allows changes to be made to user accounts (add, delete, modify). It is normally used by a System Administrator or other person
responsible for the radio system.
Example entry: user add fieldserv secret w
The above example shows the command string for adding a new user
(fieldserv), with “write” permission and a password of secret.
Example Response: user: Command Complete
NOTE: If you are logging in for the first time since the radio was
shipped from the factory, refer to Page 25 for important login
information.
ver
Version of Firmware/Hardware
Usage: ver [frw|hdw|ext]
This command displays radio version information for firmware (frw),
hardware (hdw) and Extended Version Information (ext).
Example 1:
MDS 05-3627A01, Rev. C
LEDR> ver frw
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87
Response 1:
ver: LEDR Part #06-3451A01
ver: 2.4.3
(Version of firmware P/N above)
Example 2:
LEDR> ver hdw
Response 2:
ver: {Hardware version}: A
Example 3:
LEDR> ver ext
Response 3:
ver: Part #06-3451A01
ver: 2.4.3
ver:
ver: Image 1
ver: Region Expected Upgrade
ver: Firmware 2.4.3
ver: DSP
1.1.0
ver: FPGA
Ver1.22
ver: Scripts Ver1.44
ver: Option Ver1.56
ver:
ver: Image 2 (Active)
ver: Region Expected Upgrade
ver: Firmware 2.4.3
ver: DSP
1.1.0
ver: FPGA
Ver1.22
ver: Scripts Ver1.44
ver: Option Ver1.56
ver {Active code}: compiled Aug 15 2000 08:47:46
Note: Blank lines following “Ver:” are spaces used as vertical
separations between data groups.
volume
Volume of Orderwire Earpiece
Usage: volume []
This command sets or displays the orderwire handset volume.
Example Response: volume: 100
vox
Voice Operated Transmit
Usage: vox threshold <1–100>
The vox command sets or displays the level/threshold at which the orderwire microphone will key the transmitter.
NOTE: When the orderwire microphone is spoken into, the audio will
be heard by all LEDR radios in the network which currently
have a handset plugged into the front panel ORDERWIRE
jack. Only one station can transmit at a time; the circuit is
half-duplex.
Example Response: vox: 5
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who
Who is currently logged on to the Network Management Ports?
Usage: who
This command displays users currently logged in to the radio operating
system.
6.5 Disabling the Front Panel Alarm LED for
Unused E1 Option Ports
To disable the ALARM LED on the front panel for a particular E1 port,
use the commands found in Table 26 according to the E1 port number.
When alarm events are pending, the alarm condition for the unused E1
ports remains until a valid input signal (as defined by G.703) is applied.
You must log into the LEDR radio as a user with “Administrator” privileges to execute these commands. If you are using a terminal program
connected to the radio, send one command sequence at a time to the
radio with a 5 ms delay between each line.
Table 26. Commands to Disable E1 Port Alarms
MDS 05-3627A01, Rev. C
Disable the LED for IO1
Disable the LED for IO2
Evmap led 74 none
Evmap led 87 none
Evmap led 75 none
Evmap led 88 none
Evmap led 76 none
Evmap led 89 none
Evmap led 77 none
Evmap led 90 none
Evmap led 78 none
Evmap led 91 none
Evmap led 79 none
Evmap led 92 none
Evmap led 80 none
Evmap led 93 none
Evmap led 81 none
Evmap led 94 none
Evmap led 82 none
Evmap led 95 none
Evmap led 83 none
Evmap led 96 none
Evmap led 84 none
Evmap led 97 none
Evmap led 85 none
Evmap led 98 none
Evmap led 86 none
Evmap led 99 none
Disable the LED for IO3
Disable the LED for IO4
Evmap led 100 none
Evmap led 101 none
Evmap led 102 none
Evmap led 103 none
Evmap led 104 none
Evmap led 105 none
Evmap led 106 none
Evmap led 107 none
Evmap led 108 none
Evmap led 109 none
Evmap led 110 none
Evmap led 111 none
Evmap led 112 none
Evmap led 113 none
Evmap led 114 none
Evmap led 115 none
Evmap led 116 none
Evmap led 117 none
Evmap led 118 none
Evmap led 119 none
Evmap led 120 none
Evmap led 121 none
Evmap led 122 none
Evmap led 123 none
Evmap led 124 none
Evmap led 125 none
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89
To restore the factory default settings to all of the E1 ports, issue the
commands shown in Table 27.
Table 27. Restore Factory Defaults to Alarm Ports
Evmap led 74 ioalarm
Evmap led 100 ioalarm
Evmap led 75 ioalarm
Evmap led 101 ioalarm
Evmap led 76 ioalarm
Evmap led 102 ioalarm
Evmap led 77 ioalarm
Evmap led 103 ioalarm
Evmap led 78 ioalarm
Evmap led 104 ioalarm
Evmap led 79 ioalarm
Evmap led 105 ioalarm
Evmap led 80 ioalarm
Evmap led 106 ioalarm
Evmap led 81 ioalarm
Evmap led 107 ioalarm
Evmap led 82 ioalarm
Evmap led 108 ioalarm
Evmap led 83 ioalarm
Evmap led 109 ioalarm
Evmap led 84 ioalarm
Evmap led 110 ioalarm
Evmap led 85 ioalarm
Evmap led 111 ioalarm
Evmap led 86 ioalarm
Evmap led 112 ioalarm
Evmap led 87 ioalarm
Evmap led 113 ioalarm
Evmap led 88 ioalarm
Evmap led 114 ioalarm
Evmap led 89 ioalarm
Evmap led 115 ioalarm
Evmap led 90 ioalarm
Evmap led 116 ioalarm
Evmap led 91 ioalarm
Evmap led 117 ioalarm
Evmap led 92 ioalarm
Evmap led 118 ioalarm
Evmap led 93 ioalarm
Evmap led 119 ioalarm
Evmap led 94 ioalarm
Evmap led 120 ioalarm
Evmap led 95 ioalarm
Evmap led 121 ioalarm
Evmap led 96 ioalarm
Evmap led 122 ioalarm
Evmap led 97 ioalarm
Evmap led 123 ioalarm
Evmap led 98 ioalarm
Evmap led 124 ioalarm
Evmap led 99 ioalarm
Evmap led 125 ioalarm
7.0 STANDARDIZING RADIO
CONFIGURATIONS
7.1 Introduction
Setting up and configuring a network of point-to-point systems can be a
frustrating task. To make the task easier and more predictable, the
parameters of one LEDR radio can be used as a template for other radios
in your system. You need only address the parameters that are site or
unit-specific, such as an IP addresses.
The config command allows the user to upload/download the radio’s
configuration data from/to a PC. There are two classifications of configuration data—radio-specific data and standard data.
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Radio-Specific data is:
•
•
•
•
•
•
•
Frequencies
Target Power
Thresholds
Calibration Data
IP Address
IP Routing Table
Network Settings
Standard radio data are the configuration parameters that are common in
all LEDR radios.
Both types of data can be uploaded and downloaded between the radio
and a PC. It is up to the user to decide whether to download both types
or just the standard (core) data. Once the data is on a PC, the file can be
edited off-line, for example, the configuration data, if desired. The customized configuration file can then be downloaded to other LEDR
radios in your system from your PC.
7.2 Setup by TFTP
To use this function the user will need:
• A PC with a TFTP server running.
• The IP address of the PC running the TFTP server.
If you do not know your computer’s address on a Windows PC, you can
use the RUN function from the Start menu and enter winipcfg to determine
your local PC’s IP address. The IP address of the radio can be found by
the use of the radio’s ip command.
Downloading Procedure
To download the configuration data from the LEDR chassis to a file (fileon the user’s PC, enter the following command:
name.txt)
LEDR> config send [filename.txt] [1.2.3.4 ]
The file, filename.txt, will be written to in the default path set in the TFTP
server. The numeric string, “1.2.3.4”, is the IP address of the PC destined
to receive the file.
Uploading Procedure
To upload into a LEDR radio only the standard configuration data from
a file on the PC (filename.txt) to the radio enter the following command:
LEDR> config get [filename.txt] [1.2.3.4 ]
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91
To download both the standard and radio-specific configuration data
from a file on the PC (filename.txt) to the radio enter the following command:
LEDR> config getall [filename.txt] [1.2.3.4 ]
Ideally, the process of updating a system would go like this:
1. Upload the current configuration data from each radio to a specific
file on your PC.
At radio 1 CONSOLE Port enter: config send radio_1.txt 1.2.3.4
At radio 2 CONSOLE Port enter: config send radio_2.txt 1.2.3.4
(etc.…)
2. Upgrade the software on each radio.
3. Boot from the new software.
4. Download the saved configuration data from Step 1 back into each
radio using the getall subcommand so that you will get both the standard and radio-specific parameters.
At radio 1 CONSOLE Port enter: config getall radio_1.txt 1.2.3.4
At radio 2 CONSOLE Port enter: config getall radio_2.txt 1.2.3.4 (etc.)
7.3 Setup Through the DB-9 CONSOLE Port
You have the option of sending the configuration data to the CONSOLE
Port instead of sending it to a file on a PC. Then the terminal program
can be set to log the data as it is created by the radio. The advantage of
this option is that you do not need to use the TFTP server, routing, etc.
on the PC.
During the upload, the LEDR software will prompt you to begin/end
recording at the terminal program. You will also be prompted on how to
end a download.
When the config get downloading option is chosen (standard data only),
the software will filter out all the radio-specific parameters as they come
through.
To upload the data to the CONSOLE Port:
LEDR> config send console
To download only the standard data via the CONSOLE Port:
LEDR> config get console
To download standard and radio-specific data: LEDR> config getall console
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File Type                       : PDF
File Type Extension             : pdf
MIME Type                       : application/pdf
PDF Version                     : 1.4
Linearized                      : No
Modify Date                     : 2001:06:29 15:07:43-03:00
Create Date                     : 2001:06:29 15:06:01-03:00
Title                           : 3627C LEDR Body.book
Author                          : MDS Employee
Creator                         : FrameMaker 5.5
Producer                        : Acrobat Distiller 4.0 for Macintosh
Page Count                      : 100
Mod Date                        : 2001:06:29 15:07:43-03:00
Creation Date                   : 2001:06:29 15:06:01-03:00
Metadata Date                   : 2001:06:29 15:07:43-03:00