UTY4422 001A Prelim 001G
User Manual: UTY4422-001G
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Instruction Manual
UNITY4422™
MPEG VIDEO
INTEGRATED
RECEIVER DECODER
Data, drawings, and other material contained herein
are proprietary to Wegener Communications, Inc., and
may not be reproduced or duplicated in any form
without the prior permission of Wegener
Communications, Inc.
When ordering parts from Wegener Communications,
Inc., be sure to include the equipment model number,
equipment serial number, and a description of the part.
In all correspondence with Wegener Communications,
Inc., regarding this publication, please refer to
UTY4422-001G.
Note: Features of the product described herein are
covered by U.S. Patent # 4,985,895.
First Edition: April 1999
Revised:
August 2002
TECHNOLOGY PARK / JOHNS CREEK
11350 TECHNOLOGY CIRCLE
DULUTH, GEORGIA 30097-1502
(770) 814-4000 FAX (770) 623-0698
Page 2
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UTY4422-001
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CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK,
DO NOT REMOVE COVER (OR BACK).
NO USER-SERVICEABLE PARTS INSIDE.
REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
CAUTION
As this unit is intended to interface with other electrical/electronic systems, proper
engineering practices must be adhered to during installation and check-out.
All AC power and ground must be installed in accordance with National Electric
Code Standards as to conductor size and limitations (see NFPA 70, articles 200280, as amended, if required), and lightning protection must be provided.
All RF interconnections must be properly shielded to prevent ingression or
egression of potential interfering sources to existing services.
Any damage to this unit caused by improper wiring/interconnections will void any
warranty extended.
WARRANTY
All Wegener Communications products are warranted against defective materials and workmanship for
a period of one year after shipment to customer. Wegener Communications' obligation under this
warranty is limited to repairing or, at Wegener Communications' option, replacing parts, subassemblies,
or entire assemblies. Wegener Communications shall not be liable for any special, indirect, or
consequential damages. This warranty does not cover parts or equipment which have been subject to
misuse, negligence, or accident by the customer during use. All shipping costs for warranty repairs will
be prepaid by the customer. There are no other warranties, express or implied, except as stated
herein.
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Table of Contents
SECTION 1 - GENERAL INFORMATION
Paragraph
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
Title
Page
General .....................................................................................................
Introduction ..............................................................................................
Unpacking and Inspection ........................................................................
Installation Instructions ............................................................................
1.4.1 Elevated Operating Ambient ........................................................
1.4.2 Reduced Air Flow ........................................................................
1.4.3 Mechanical Loading .....................................................................
1.4.4 Circuit Overloading ......................................................................
1.4.5 Reliable Earthing ..........................................................................
Physical Environment ...............................................................................
Security Labels .........................................................................................
Physical Specifications .............................................................................
Technical Support .....................................................................................
Manuals ....................................................................................................
9
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10
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11
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12
SECTION 2 - SYSTEM CONFIGURATION
2.1
2.2
2.3
Unit Overview ..........................................................................................
Block Diagram Discussion .......................................................................
Specifications ............................................................................................
2.3.1 L-Band Tuner ...............................................................................
2.3.2 QPSK Demodulator ......................................................................
2.3.3 Transport DEMUX .......................................................................
2.3.4 System Processor ..........................................................................
2.3.5 Auxiliary Data Processing ............................................................
2.3.6 Composite Video Encoder ............................................................
2.3.7 Video Specifications .....................................................................
2.3.8 Audio Specifications ....................................................................
2.3.9 Serial ASYNC Data, Monitor and Control of IRD ......................
2.3.10 Option Modules for Expansion Ports ...........................................
2.3.11 AC Power .....................................................................................
2.3.12 LNB DC power ............................................................................
2.3.13 Four Input / One Output RF Switch (Optional) ...........................
2.3.13.1 Description ....................................................................
2.3.13.2 Electrical Characteristics ..............................................
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UTY4422-001
Page 6
Table of Contents (continued)
Paragraph
2.4
2.5
2.6
Title
Page
Local Controls and Indicators ..................................................................
2.4.1 Front Panel ...................................................................................
2.4.1.1 Front Panel Display .......................................................
2.4.1.2 Front Panel Keypad .......................................................
2.4.1.3 Indicator LED’s .............................................................
2.4.2 Rear Panel .....................................................................................
2.4.2.1 Standard DVB Synchronous Interface ..........................
External Inputs and Outputs .....................................................................
2.5.1 Balanced Audio Outputs ..............................................................
2.5.2 FCC-Mandated Suppression of Radiated Emissions ....................
2.5.3 Alarm Relay and Addressable Contact Closures .........................
2.5.4 AES/EBU Audio Connector Pinout .............................................
Expansion Card Configuration .................................................................
2.6.1 Balanced Audio Expansion Card .................................................
2.6.1.1 Audio Card Jumper Configuration ................................
2.6.1.2 Audio Card Label Instructions ......................................
2.6.2 SYNC or ASI Output Data Card Jumper Configuration ..............
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SECTION 3 – OPERATION
3.1
3.2
3.3
3.4
3.5
3.6
Modes of Operation ..................................................................................
3.1.1 Power Up ......................................................................................
3.1.2 Boot Fail .......................................................................................
3.1.3 Alarm, Warning, & Normal ..........................................................
LED & Alarm / Warning Conditions .......................................................
3.2.1 Carrier (Green) .............................................................................
3.2.2 RF Level (Green) ..........................................................................
3.2.3 MPEG (Green) ..............................................................................
3.2.4 Cue (Green) ..................................................................................
3.2.5 COMPEL (Green) ........................................................................
3.2.6 Authorized (Green) .......................................................................
3.2.7 Alarm (Red) ..................................................................................
3.2.8 Warning (Amber) .........................................................................
Relays .......................................................................................................
Program Selection ....................................................................................
Audio Handling ........................................................................................
Sources of Control ....................................................................................
3.6.1 COMPEL™ ..................................................................................
3.6.2 Terminal .......................................................................................
UTY4422-001
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Page 7
3.6.3
3.6.4
Modem ..........................................................................................
PAL / NTSC Selection .................................................................
33
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Table of Contents (continued)
Paragraph
3.7
3.8
3.9
Title
Page
3.6.5 Display / Push Buttons .................................................................
Serial Port - Command Syntax .................................................................
Receiver Functions ...................................................................................
3.8.1 Perms, Temps, Searching & Settings ..........................................
3.8.2 Signal Quality Monitoring ...........................................................
3.8.3 Frequency Tagging ......................................................................
Display / Push Buttons .............................................................................
3.9.1 Overview ......................................................................................
3.9.2 Push Button Functions ..................................................................
3.9.3 E-mail ...........................................................................................
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42
Appendix A - Terminal / Modem Commands
A1.0
A1.1
Status Commands .....................................................................................
A1.0.1 H (Help) .....................................................................................
A1.0.2 R (Report) ..................................................................................
Control Commands ...................................................................................
A1.1.1 ABORT ......................................................................................
A1.1.2 ADDS ........................................................................................
A1.1.3 DELS .........................................................................................
A1.1.4 MUTE ........................................................................................
A1.1.5 OH .............................................................................................
A1.1.6 PC ..............................................................................................
A1.1.7 PERM ........................................................................................
A1.1.8 PERMCH ...................................................................................
A1.1.9 PW .............................................................................................
A1.1.10 RE ..............................................................................................
A1.1.11 SETAUDIO ...............................................................................
A1.1.12 SETLNB ....................................................................................
A1.1.13 SETTIMEOUT ..........................................................................
A1.1.14 SNR ...........................................................................................
A1.1.15 TEMP .........................................................................................
A1.1.16 TEMPCH ...................................................................................
A1.1.17 UNMUTE ..................................................................................
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Appendix B - Front Panel Display
B1.1
B1.2
B1.3
Home Screen ............................................................................................
Email ........................................................................................................
Hardware Setup ........................................................................................
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UTY4422-001
Page 8
B1.4
B1.5
B1.6
Status Reports ...........................................................................................
Version .....................................................................................................
Navigation Help .......................................................................................
Table of Contents (continued)
APPDX
Title
54
62
64
Page
C
Glossary of Terms ..................................................................................
65
D
RMA Request Form ................................................................................
67
LIST OF TABLES
Table
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
Title
Page
Physical Specifications............................................................................
Tuner Specifications................................................................................
QPSK Demodulator Requirements .........................................................
Video Resolution Requirements..............................................................
Video Specifications ...............................................................................
Audio Specifications ...............................................................................
Serial ASYNC Port Requirements ..........................................................
RF Switch Characteristics .......................................................................
Front Panel LED's ...................................................................................
Serial 1 and Serial 2 Port Pin-outs ..........................................................
Input and Output Connectors ..................................................................
Analog Audio Channel 1 and Channel 2 Connector Pinouts ..................
AES/EBU Digital Audio Pinouts ............................................................
LED and Alarm Conditions.....................................................................
Audio Handling .......................................................................................
Serial Port Device Combinations ...........................................................
Serial Port Settings .................................................................................
Serial Port Operation...............................................................................
Settings Parameters .................................................................................
Group Settings.........................................................................................
IRD Signal Quality..................................................................................
Display Modes.........................................................................................
Push Button Functions ............................................................................
LC Display Menus ..................................................................................
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39
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LIST OF ILLUSTRATIONS
Figure
1
2
3
4
Title
Page
UNITY4422 Block Diagram ...................................................................
Ferrite Bead Installation ..........................................................................
UNITY4422 Front Panel .........................................................................
UNITY4422 Rear Panel ..........................................................................
UTY4422-001
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SECTION 1
GENERAL INFORMATION
1.1
GENERAL
The purpose of this manual is to describe the proper installation and operation of the Wegener
Communications UNITY4422 MPEG Video Integrated Receiver Decoder.
1.2
INTRODUCTION
The UNITY 4422 IRD is an integrated receiver/decoder designed to receive SCPC or MCPC
DVB-compliant digital video signals transmitted by satellite. These include the new 4:2:0 and
4:2:2 chroma formats, as well as the traditional 4:3 and new 16:9 aspect ratios. The input to the
IRD is an L-band (950-2150 MHz) RF signal which is processed to produce NTSC or PAL
video, audio, e-mail output, and electronic-relay cueing signals. The IRD is fully networkcontrolled via the Wegener Communications, Inc. (WCI) COMPEL control system.
The optional decryption feature for the IRD allows for use of WCI conditional access.
Authorization of each IRD is under network control.
In addition to network control, the IRD features a front-panel LCD interface for gathering local
status information. In addition, limited control of the IRD (if allowed by the COMPEL
network) may be implemented via serial port, connecting either to a local terminal (or via phone
modem) to a remote terminal.
The IRD has expansion ports for up to two add-in modules. Contact the Wegener Sales
Department about available options.
1.3
UNPACKING AND INSPECTION
Carefully unpack the unit and inspect it for obvious signs of physical damage which might have
occurred during shipment. Any damage claims must be reported to the carrier immediately. Be
sure to check the package contents carefully for important documents and materials.
1.4
INSTALLATION INSTRUCTIONS
To avoid damage to this and other equipment, or personal injury, the following items should be
strictly observed.
1.4.1
Elevated Operating Ambient
If equipment is installed in a closed or multi-unit rack assembly, the operating ambient of the
rack may be greater than the room ambient. Therefore, considerations should be given to the
TMRA, or Temperature inside the Mounting Rack, and not just inside the roomThe statements
on the second line tell which devices can be connected to Serial Port 2 when the device on the
top line is connected to Serial Port 1.
.
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UTY4422-001
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1.4.2
Reduced Air Flow
Installation of the equipment in a rack should be such that the amount of air flow required for
safe operation of the equipment is not compromised.
1.4.3
Mechanical Loading
Mounting of equipment in a rack should be such that a hazardous condition is not achieved due
to uneven loading.
1.4.4
Circuit Overloading
Consideration should be given to the connection of the equipment to the supply circuit and the
effect that overloading of circuits could have on overcurrent protection and supply wiring.
Appropriate consideration of equipment nameplate ratings should be used when addressing this
concern.
1.4.5
Reliable Earthing
Reliable earthing of rack-mounted equipment should be maintained. Particular attention should
be given to supply connections other than direct connection to the Branch (use of power strips).
1.5
PHYSICAL ENVIRONMENT
See specific statements in Section 1.4.
Mount the UNITY4422 IRD in a standard EIA 19-inch equipment rack located in a clean, dry
environment, and do not place unsupported equipment on the unit. Make sure that total rack
power consumption does not exceed the limits of the AC branch circuit, and that a reliable earth
safety ground is maintained. The unit will meet the full 10-40oC operating temperature
specification only if adequate clearance around vent-holes is provided. The units may be
arranged without empty space between them, as long as enough rack ventilation is provided to
prevent severe heat buildup. Please note the maximum per-unit power dissipation of 45 watts.
1.6
SECURITY LABELS
The UNITY4422 uses security labels over some of the screws. There are no user serviceable
components within the unit, and tampering with the security labels or opening the units will void
your warranty. If you have questions, contact Wegener's customer service department at the
address, phone, or fax numbers listed in Section 1.8 of this manual.
* * * WARNING * * *
When connecting cables to “F” type connectors apply a force of no more than 12 inch lb.
(Finger tight). Avoid connecting adapters directly to “F” type connectors. Use at minimum
a 1 foot flexible extension cable between “F” type connectors and adapters.
UTY4422-001
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Page 11
1.7
PHYSICAL SPECIFICATIONS
The operating temperature of the IRD is +10°C to +40°C in still air with unblocked side vents.
(The unit is fan-cooled.)
Table 1. Physical Specifications
Parameter
Description
Size
19”W x 1.75”H x 13.75”D
Weight
10.5 Pounds
Operating Temperature
+10°C to +40°C
Power Requirements
115VAC, 60Hz, 0.8A Typ., or
230VAC, 50Hz, 0.5A Typ.
1.8
TECHNICAL SUPPORT
In the event the unit fails to perform as described, contact Wegener Communications Customer
Service at (770) 814-4057, FAX (678) 624-0294, or e-mail “service@wegener.com”.
To return a product for service:
1. Obtain a Return Material Authorization (RMA) number by completing and faxing a copy of
the RMA Form (See Appendix D, Page 67.) to (678) 624-0294. You may e-mail the same
information instead to:
service@wegener.com
2. Plainly write the RMA number on the outside of the product shipping container.
NOTE: Writing the RMA number on the outside of the shipping container will
help us to return your equipment to you sooner. Thank you.
3. Return the product, freight prepaid, to the address below:
Service Department RMA# ________
Wegener Communications, Inc.
359 Curie Drive
Alpharetta, GA 30005
NOTE: All returned material must be shipped freight prepaid. C.O.D.
shipments will not be accepted.
Please contact Customer Service at one of the numbers above if you have any questions
regarding service procedures.
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1.9
MANUALS
If you have any suggestions concerning this, or any Wegener Manual, please E-mail them to
manuals@wegener.com. If you would rather mail them, please do so to the address shown
below. Our preference is that you copy the page in question, mark it up, and fax or mail us the
copy. We do appreciate constructive criticism. The Fax Number is 770-497-0411.
Attn: Manuals
Wegener Communications, Inc.
11350 Technology Circle
Duluth, GA 30097
UTY4422-001
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Page 13
SECTION 2
SYSTEM CONFIGURATION
2.1
UNIT OVERVIEW
The UNITY 4422 IRD features several separate hardware components: The DC switching
power supply, the main motherboard, an L-band DVB receiver, front-panel keypad controller
card, a front-panel LCD assembly, and the optional L-band RF switch. The DC switching power
supply provides all internal regulated DC power. When present, the L-band RF switch is
installed in the Module 2 expansion slot, and provides network or (if allowed by the network)
local user selection of up to four separate feeds. The selected RF feed output is connected to the
DVB-compliant L-band receiver card. This card tunes and demodulates the input QPSK carrier,
and then applies two layers of error correction decoding. Its output is the original multiplex
MPEG transport stream which was input to the uplink IF modulator. This stream then feeds the
main motherboard, which demultiplexes out the selected video and audio elemental streams.
These are, in turn, de-compressed and converted back to the original analog source material for
output. Meanwhile, the user may query the IRD using the front-panel keypad for input and the
LCD to read the returned status information.
2.2
BLOCK DIAGRAM DISCUSSION
Refer to Figure 1 (Page 14) for the following discussion.
The DVB-compliant receiver card demodulates the incoming QPSK carrier. It implements one
of five possible FEC rates. The resulting bit stream is parsed back into a byte stream and the
MPEG sync is detected. This aligns a de-interleaver and then the following Reed-Solomon FEC
decoder. The decoded byte stream is output to the main board.
The input to the main board is the multiplexed MPEG2 transport stream. If encryption is active,
then the decryption function is executed. The resulting “clear” transport stream is then fed to the
transport demultiplexer. This device selects the component elemental stream for selected video
and audio programs, as well as the network control data streams. The selected video data is
passed to an MPEG video decoder, which converts the signal to linear digital video. This is then
converted to analog NTSC/PAL in a final encoder for output. Meanwhile, the selected MPEG
compressed audio stream is also routed to a combined decompression and digital-to-analog
converter IC. The output is one stereo pair of audio signals (L and R) on Channel 1 at the back
panel. In addition to the first stereo pair, a digital signal processor monitors and demultiplexes
out another selected digital audio stream, which is also decoded and output as the stereo pair on
Channel 2 at the back panel.
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UTY4422-001
Page 14 of 74
-->
-->
-->
-->
-->
-->
-->
-->
-->
-->
-->
20MHz
BUFFER
RATE
FIFO
PLL
SRAM
32K X 8 32K X 8
32K X 8
MPEG2
TRANSPORT
27 Mhz
VCXO
Data
MPEG2
A
16
D
DEMUX
I2C BUS
DB9
I/O PORT
TO FRONT PANEL
DISPLAY &
PUSHBUTTONS
RJ11
I2C BUS
FRAM
2048 X 8
SRAM
128K X 8 128K X 8
(32K X 8) (32K X 8)
L_Addr
Addr/Data
Control
CLK_EN
CS
I2C BUS
AUDIO 2
IRQ / CTL
128K X 8 128K X 8
FLASH 2
BUS
I2C BUS
I2C
J1
SDI
VIDEO
OUT
RESET
DB9
SERIAL
PORT
ALARM
RELAY
LNB
POWER ON WATCHDOG
RESET
CPU
LEFT
&
RIGHT
LEFT
&
RIGHT
COMPOSITE
VIDEO
CONTACT
CLOSURE
R/X CONTROL
AUDIO
DEC 2
AUDIO
DEC 1
VIDEO
ENCODER
D1 VIDEO
AUDIO OUT 1
AUDIO OUT 2
128K X 8 128K X 8
FLASH 1
INT
AES/EBU
VIDEO DEC
256K X 16 256K X 16
I2C BUS
J12
DB-9
A
DRAM
256K X 16 256K X 16
DECRYPTION
DUART
AUDIO
RF SWITCH
EXPANSION BUS CONNECTORS
I2C BUS
AUDIO
3&4
5&6
HBUS
MPEG2 A/V
I2C BUS
C
256K X 16
DRAM
256K X 16
AUDIO 2
23
HS BUS
I2C BUS
DSP CTL
Control
R/X CONTROL
Address
SECURE MC
DECRYPTION
+3.3V
+3.3V
LNB
+12V
-12V
+5V
+24V
GND
FLASH (DEBUG)
REG
REG
REG
MPEG2
TRANSPORT
R/X DATA IN
EXPA (Audio)
D1 (Video)
XC5204
80C51XA
CPU_2096, TMS2490
DSP_2096
CS4920_1, CS4920_2
CL9100
CL9100
XC5202
EXPM (MPEG2)
--> DSP_320C203
+5V
+5V
+24V
POWER
SUPPLY
R/X CONTROL
CHCLK (7.5 MHz) Distributions:
CHCLKA --> DVB Receiver Module
CHCLKB --> CL9110
CHCLKC --> XC5202
ECLK
--> EXPM
27M1A
27M1D1
27M2
27M3
27M4
27M5
27M6
VCLK
GCLK
27M7
27M1M
TX1
DSP
27 MHz Clock Distributions:
20.000 MHZ
CLOCK
DVB RECEIVER
MODULE (OR
DECRYPTION
EXPANSION)
120 VAC
Page 14
Figure 1. UNITY4422 BLOCK DIAGRAM
Page 15
The control system on the main board is run by the main host processor. This processor
interfaces with the COMPEL™ network as well as local users and then controls and monitors the
unit’s operations. To do its job, this processor accesses the control data streams recovered from
the main transport demultiplexer. One of these may be a conditional access data stream (if
used). The main processor sends this data to a separate secure microprocessor, which looks to
see if its unit serial number is authorized to receive the broadcast signal and, if so, recovers the
secret keys for decrypting the incoming encrypted transport stream. Meanwhile, the main host
processor also communicates with several peripheral devices. It manages the data passed
to/from the front-panel keypad controller (which lights status LED's, manages an LCD display,
and reads back keypresses). It manages two serial ports that allow for use of a terminal, modem,
printer, or auxiliary data device as well as the display and printing of local e-mail. Additionally,
it controls the L-band receiver daughtercard and any installed options Modules (such as the RF
switch).
For maximum flexibility, and to make value-added upgrades easily possible, the operating unit
software is stored in flash memory and may be dynamically replaced via the local serial port or
from the satellite network control channel.
2.3
SPECIFICATIONS
The receiver uses an integrated tuner and QPSK demodulator assembly.
2.3.1
L-Band Tuner
The tuner specifications are shown below.
Table 2. Tuner Specifications
Parameter
Specification
Input Frequency Range
950 - 2150 MHz
Input Level Range
-20 dBm total signal power down to -135 dBm/Hz
signal power spectral density
Maximum Aggregate Input Power
-5 dBm
Input Impedance
75 ohms, unbalanced
Input VSWR
< 2.5:1, typ. 2.0
Input Noise Figure
8 dB MAX at minimum input level
L.O. Leakage at Input
-55 dBm
2.3.2
QPSK Demodulator
The QPSK demodulator’s input data rate is variable over the range shown in Table 3 (Page 16),
with a minimum transport-rate step size of 1 kbps. In Table 3, “Threshold Eb/No” is that value
of Eb/No at which the average number of uncorrected FEC frames exceeds one per minute.
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Page 16
Table 3. QPSK Demodulator Requirements
Inner Code Rate
Symbol Rate
Transport Rate
Threshold Eb/No
1/2
2.71-30 Msps
2.5-27.647 Mbps
4.0
2/3
2.04-30 Msps
2.5-36.863 Mbps
5.0
3/4
1.81-30 Msps
2.5-41.471 Mbps
5.5
5/6
1.63-30 Msps
2.5-46.078 Mbps
6.0
7/8
1.55-30 Msps
2.5-48.382 Mbps
6.4
2.3.3
Transport DEMUX
The transport demux is used to extract the desired video and audio streams from the multiplexed
data stream.
2.3.4
System Processor
The main system processor is an extended architecture processor, and uses flash memory for
microcode storage with download capability via either terminal or satellite channel.
The unit also has an MPEG2 video processor ASIC, and an audio processor ASIC.
2.3.5
Auxiliary Data Processing
An asynchronous user-data stream embedded in the transport stream may be routed to SERIAL 1
or SERIAL 2 ports under user or network control.
2.3.6
Composite Video Encoder
The IRD supports the following video resolutions:
Table 4. Video Resolution Requirements
UTY4422-001
NTSC
PAL
720H x 480V (Full Resolution)
720H x 576V
544H x 480V (3/4 Resolution)
544H x 576V
480H x 480V
480H x 576V
352H x 480V (1/2 Resolution)
352H x 576V
352H x 240V
352H x 288V
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Page 17
2.3.7
Video Specifications
NTSC video performance is specified below at a 9 Mbps video PES rate, 720Hx480V resolution.
Table 5. Video Specifications
Parameter
Production Specification
Signal Type
Output Level
Output Impedance
Multiburst NTSC
NTSC
1.0 Vp-p, ± 2%
75 Ohms
From 0.5 to 4.2
MHz: ≤+0/−1.0 dB
≤ 4 IRE
≤ 1.5°
≤ ± 4 IRE
≤ ± 26 nS
≤ 1 IRE p-p
≤ 3 IRE p-p
PAL
1.0 Vp-p, ± 2%
75 Ohms
From 0.5 to 4.8
MHz: ≤+0/−1.2 dB
≤ 4 IRE
≤ 1.5°
≤ ± 4 IRE
≤ ± 26 nS
≤ 1 IRE p-p
≤ 3 IRE p-p
≥ 56 dB
≥ 56 dB
Differential Gain
Differential Phase
L/C Gain Inequality
L/C Delay Inequality
Line Time W-form Distortion
Field Time W-form Distortion
Video S/N Weighted
2.3.8
Audio Specifications
Audio performance is specified below at a compressed-audio PES rate of 256 kbps.
Table 6. Audio Specifications
Parameter
Specification (each channel of stereo pair)
Output Level-MAX PPL
+18.0 ±0.5 dBm into 600 ohms, at 0 dB
attenuation level
Balanced: < 60 Ohms
20Hz to 20 kHz, + 0.5/-1.5 dB
50Hz to 15 kHz, ± 0.5 dB
50 Hz to 15 kHz, ≤± 2°from linear phase
≤ 0.5 %
Impedance
Frequency Response
Phase accuracy
Harmonic Distortion (1 kHz
test-tone, 1 dB below PPL)
S/N Ratio
Dynamic Range
A/V Sync
m 80 dB (22 Hz to 20 kHz) unweighted
16 bits
≤± 50 mS error
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2.3.9
Serial ASYNC Data, Monitor and Control of IRD
Two serial ports (SERIAL 1 and 2) for data to/from the IRD have the following characteristics:
Table 7. Serial ASYNC Port Requirements
Parameter
Specification
Signal Type
Serial Asynchronous Character Data
Levels
RS-232
Mode
Always 8 data-bits, one start, one stop-bit, half-duplex.
Pin-outs
DCE to AT-compatible serial port, 3-wire subset (Rxd,
Txd, and Ground) without handshake lines
2.3.10 Option Modules for Expansion Ports
The IRD has two expansion slots - one high speed and one low speed. The high speed expansion
port provides the transport layer multiplexed stream while the low speed expansion port provides
the filtered packet data. An I2C bus provides control for option modules. The specifications for
individual modules are included in documentation for the module.
2.3.11 AC Power
The unit features a universal-input power supply. AC line is fed into a standard IEC jack. The
nominal inputs are 115 or 230 VAC ± 10% at 50-60 Hz ± 2%. The total AC current
consumption with the 4:1 RF switch option and max LNB DC load is 0.8A at 115 VAC, and
0.5A at 230 VAC.
2.3.12 LNB DC Power
The unit may feed DC power to an external antenna-mounted LNB using either the RF-In
connector’s center-pin or a terminal on the rear-panel terminal strip (with an external DC power
inserter). The nominal voltage supplied is +17 to +24 VDC, while the maximum load current is
250 mA. The output is short-circuit protected by a thermal fuse. An internal jumper (J27) is
used to enable/disable DC power on the RF-In center-pin. Once that jumper has been set, the
LNB power can be turned on via the front panel menu.
2.3.13 Four Input / One Output RF Switch (Optional)
2.3.13.1 Description
The module is normally installed into the MODULE 2 option-slot position on the back of the
parent IRD. It allows the IRD to select one of four antenna / LNB inputs when its RF OUTPUT
jack is connected via a 75-ohm coax cable to the IRD RF INPUT. There is no power pass for
LNB DC power. (DC for the LNB is provided on the UTY4422 rear terminal strip and requires
an external DC power inserter. No DC voltage is applied to any F connector.) The input and
output RF connectors are Type-F jacks, and they are located on the option module rear panel.
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Page 19
No user-accessible controls or indicators are located on the module.
2.3.13.2 Electrical Characteristics
The characteristics described in Table 8 are measured at a -25 dBm input level.
Table 8. RF Switch Characteristics
2.4
Parameter
Specification
Input Isolation, Port to Port
(all ports terminated)
> 35 dB, 950-1450 MHz
≥ 24 dB, >1450-2150 MHz
Input VSWR (selected port,
75-ohm system)
≤ 2.5:1, 950-1450 MHz
≤ 3.5:1, >1450-2150 MHz
Insertion Loss
≤ 1.5 dB, 950-1450 MHz
≤ 4 dB, >1450-2150 MHz
LOCAL CONTROLS AND INDICATORS
2.4.1
Front Panel
See Figure 3 (Page 25) for a view of the front panel.
2.4.1.1 Front Panel Display
The front-panel includes a 2-line by 20-character display to support the local user
monitor/control interface. See Table 24 (Page 40), and Appendix B for details on the messages
displayed there, as well as the menus supporting the keypad interface described in Section
2.4.1.2.
2.4.1.2 Front Panel Keypad
The front-panel includes a keypad for user input. The keys are right, left, up, down arrows and
SELECT, and ENTER. See Sections 2.4.1.2 and 3.9, and Appendix B for details on their use.
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2.4.1.3 Indicator LED’s
Table 9. Front Panel LED’s*
Label Mnemonic
Meaning (See Section 3.2)
Color
CARRIER
Carrier Tracking indication
Green
MPEG
Main MPEG mux indication
Green
CUE
Contact-closure activation
Green
AUTH
Authorized to receive COMPEL-CA program
Green
RF LEVEL
Signal Level Warning
Green
COMPEL™
Network control indication
Green
WARNING
General warning indication
Yellow
ALARM
Link lost or other major alarm indication
Red
*For an explanation of the Front Panel LED’s, see Section 3.2
2.4.2
Rear Panel
See Figure 4 (Page 25) for a view of the rear panel, where the following controls are located.
2.4.2.1 Standard DVB Synchronous Interface
Table 10. Serial 1 and Serial 2 Port Pin-outs
SERIAL 1
Pin #
B1
B2
B3
B4
B5
B6
B7
B8
B9
SERIAL 2
Signal
DCD (Internally pulled high)
RXD (Output
TXD (Input)
DTR (Not connected)
GNDS
DSA (Internally pulled high)
RTS (Not connected)
CTS (Internally pulled high)
RI
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Pin #
A1
A2
A3
A4
A5
A6
A7
A8
A9
Page 20 of 74
Signal
DCD (Internally pulled high)
RXD (Output)
TXD (Input)
DTR (Not connected)
GNDS
DSA (Internally pulled high)
RTS (Not connected)
CTS (Internally pulled high)
RI
Page 21
2.5
EXTERNAL INPUTS AND OUTPUTS
Table 11. Input and Output Connectors
Name
Description
RF Switch (Optional)
Four female Type-F RF INPUTS (1-4) and one female Type-F RF
OUTPUT (no powered ports)
RF IN
Female Type F, L-band input, 950-2150 MHz
VIDEO OUT
75 ohm female BNC, NTSC composite video output
BALANCED AUDIO CH1 L & R
Female 9 pin D Connector
BALANCED AUDIO CH2 L & R
Female 9 pin D Connector
SDI (D1) VIDEO
Female BNC
AES/EBU
Female 9 pin D Connector
SERIAL 1
Female 9 pin D Connector (Printer, Modem or Terminal) (See
Table 12 for pin-outs.)
SERIAL 2
Female 9 pin D Connector (Printer, Modem or Terminal) (See
Table 12 for pin-outs.)
LNB (J27 required)
Plug-in terminal strip, LNB DC
GND
Plug-in terminal strip, LNB DC current return
ALARM
Plug-in terminal strip, alarm relay contacts
CLOSURE 1
Plug-in terminal strip, network-controlled solid-state relay contacts
CLOSURE 2
Plug-in terminal strip, network-controlled solid-state relay contacts
AC Input
AC power connected through a standard IEC connector
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Table 12. Analog Audio Channel 1 and Channel 2 Connector Pinouts
Channel 1, J5, DB9
Channel 2, J6, DB9
Pin #
1
2
3
4
5
6
7
8
9
Pin #
1
2
3
4
5
6
7
8
9
Signal
AUDIO1R+
GNDD
AUDIO1RAUDIO1L+
GNDD
AUDIO1LNC
NC
NC
Signal
AUDIO2R+
GNDD
AUDIO2RAUDIO2L+
GNDD
AUDIO2LNC
NC
NC
2.5.1
Balanced Audio Outputs
There are two audio channel outputs on the rear panel. Each Channel (Ch1 & Ch2) has a right
and left pair. Each of these pairs is a balanced, low-impedance audio output. These are accessed
through DB-9 connectors, which plug through the rear panel into the main PWB.
Please note that audio should be terminated with 600-ohm loads for correct output levels.
2.5.2
FCC-Mandated Suppression of Radiated Emissions
In order to comply with the requirements of FCC Part 15 Subpart B, Class A
emissions, please read the following instructions on the protection of all output
wiring and cabling:
For each alarm or user-controlled relay output THAT IS USED, a single ferrite
core must be used for EMI emission suppression. The ferrite cores are supplied
in the shipping container along with the Unity4422 IRD. Details on assembly of
the ferrite cores on the wiring are shown in Figure 2. Note that each pair of wires
must pass through the core twice. Be sure that this is done as close to the
removable screw-terminal strip as possible. If minimal slack is used in the outer
“turn,” the ferrite core should be properly restrained by the wiring alone.
In addition to the above precautions for the wiring to the screw-terminal strips,
the user is cautioned to only use high-quality shielded cabling for the SERIAL 1
and SERIAL 2 connectors.
2.5.3
Alarm Relay and Addressable Contact Closures
The rear panel has an alarm relay and two solid-state contact closures addressable from the
COMPEL™ uplink computer. This relay’s “alarm” conditions are the same as the front-panel
ALARM LED. The alarm relay is factory-set so that an alarm condition or the loss of unit power
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Page 23
will cause the rear panel alarm outputs to short together (alarm relay closed). Ratings for the
alarm relay and network-controlled closures are 100 mA at 30 VDC.
The two contact closures are controlled via the COMPEL command stream from the uplink. See
the COMPEL™ Manual for the commands and structure for the relay closures.
2.5.4
AES/EBU Connector Pinout
The AES/EBU digital audio is output on a DB-9 connector on the rear of the unit. The pinouts
are shown below.
Table 13. AES/EBU Digital Audio Pinouts
PIN
SIGNAL
1
2
3
4
5
6
7
8
9
POS1
POS2
GND
GND
GND
NEG1
NEG2
GND
GND
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Figure 2. Ferrite Bead Installation
MAX
250 mA
ALARM G L
+ -
N
D
N
B
CLOSURE
1
2
+ - + -
* * * CAUTION * * *
To meet FCC requirements, the alarm and contact closures must have
a ferrite bead installed on each pair of wires leading from them. See
Section 2.5.2 and Figure 2-2 for instructions on their installation.
There are 3 ferrite beads packed with the unit. One of these is for the
alarm relay output, and two are for the contact closures.
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MODULE 2
The Digital Broadcasting Platform
MODULE 1
RF IN
MPEG
RF LEVEL COMPEL
CARRIER
WARNING
CUE
ALARM
AUTH
Page 25 of 74
CH 2
BALANCED AUDIO
RISK OF ELECTRIC SHOCK
DO NOT OPEN
RISQUE DE CHOC ELECTRIQUE NE PAS OUVRIR
CH 1
AVIS:
G L
N N
D B
1
2
CLOSURE
+ - + CONTACT RATING 0.1A @ 30VDC
+ -
ALARM
MAX
250mA
Figure 4. UTY4422 Rear Panel
MPEG 4:2:2 & 4:2:0
UNITY4422 MPEG-2 IRD
Figure 3. UTY4422 Front Panel
SERIAL 2
SERIAL 1
OUT
VIDEO
COMPOSITE
AUDIO
AES/EBU
ENTER
OUT
VIDEO
SDI
SELECT
WEGENER
COMMUNICATIONS
115/230VAC
0.8/0.5A
50/60Hz
Page 25
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2.6
EXPANSION CARD CONFIGURATION
The purpose of this section is to detail the jumper settings and labeling instructions for the Unity
Expansion Cards.
2.6.1
Balanced Audio Expansion Card
2.6.1.1 Audio Card Jumper Configuration
Jumper settings – Dotted and Non-dotted. The headers used here have 3 pins, so a jumper
connecting 2 of these pins can connect pins 1 & 2 or pins 2 & 3. The “Normal” position of this
jumper is marked by a dot on the silkscreen near either pin 1 or pin 3.
Dotted Position - Jumpering pin 2, the center pin, to the pin nearest the dot.
Non-Dotted Position - Jumpering pin 2 to the pin furthest from the dot.
Installing one audio expansion card enables audio channels 3 and 4. You should set jumpers J2,
J3, J4, J6, J7, and J8 on this Audio Card to the “dotted” position.
Installing a second audio expansion card enables audio channels 5 and 6. Set jumpers J2, J3, J4,
J6, J7, and J8 on this Audio Card to the “non-dotted” position. Leave the jumpers on the first
audio expansion card in the “dotted” position, which will continue to enable channels 3 and 4 on
that card.
* * * Caution! * * *
When 2 audio expansion cards are installed, one must have the jumpers in
the dotted position, and the other must have them in the non-dotted position.
Failure to correctly configure the jumpers WILL cause operational problems.
Either available module slot may be used with the “non-dotted” card, but that card will be the
Channel 5 & 6 card. The “dotted” card will be the Channel 3 & 4 card. Each card should also
be labeled appropriately. (See the following section.)
2.6.1.2 Audio Card Label Instructions
When a single balanced audio expansion card is installed (In either Module 1 or Module 2 slot),
channels 3 and 4 are used. You should set the jumpers on that card to the “dotted” position, and
label the Audio Card Bracket as [CH4 CH3]. To label it:
1. Peel the [CH4 CH3] label from the backing.
2. Press the label onto the rear of the Audio Card Bracket, within the blank rectangle
provided, or cover existing silkscreen text.
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When a second balanced audio expansion card is installed, channels 5 and 6 are used. The
second card is installed in the vacant module slot and connected to the first card and the
motherboard by a 3-connector cable, rather than the 2-connector cable used with a single card.
The second card enables Channels 5 & 6 when the jumpers are set to the “Non-dotted” position.
Labeling this card is done like the first card, except it will be labeled [CH 6 CH5].
2.6.2
Sync or ASI Output Data Card Jumper Configuration
* * * Caution! * * *
When 2 SYNC or ASI expansion cards are installed, one must have the jumpers
in the dotted position, and the other must have them in the non-dotted position.
Failure to correctly configure the jumpers WILL cause operational problems.
When you install one SYNC or ASI expansion card, set jumper J9 on that card to the “dotted”
position. See Section 2.6.1 for details on “Dotted” and “Non-dotted” jumper positions.
When installing a second SYNC or ASI expansion card, jumper J9 on that card must be set to the
“non-dotted” position. Leave jumper J9 on the first data expansion card set to the dotted
position.
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SECTION 3
OPERATION
3.1
MODES OF OPERATION
3.1.1
Power Up
At power up, the unit does a quick checksum test on the EEPROM. If the test passes, the unit
then initializes various devices and configures itself according to the EEPROM settings. It then
waits for the receiver board to complete its boot-up. When the receiver board boots up, the IRD
sends a tune request to the receiver board and the Welcome Banner to the serial port. The IRD
then enters alarm mode until all of the alarm conditions are cleared. Total boot-up time is
approximately 25 seconds, but may vary somewhat.
Also, while in power up mode, each of the Unity 4422’s LED's will FLASH (See Table 14,
Page 30.).
3.1.2
Boot Fail
If any of the boot fail conditions occur, the unit will enter “boot fail” mode. While in this mode,
the unit is essentially dead. All audio and video is muted, the alarm relay is closed, the general
purpose relays are all open, and the unit does not attempt carrier acquisitions, etc.
3.1.3
Alarm, Warning, & Normal
See Sections 3.2.7 and 3.2.8 for a complete list of alarm/warning conditions and for information
on the LED's during these modes. The overall behavior of the IRD is very similar for any of
these modes, and the following is a list of their differences:
•
Alarm and User Relays. See Section 3.3 for details.
•
Video is alarm frozen if No MPEG Data for less than 5 seconds, No Video for less than five
seconds, or in fade mode for less than 10 seconds.
•
Video is muted for all alarm conditions except Alarming Eb/No.
•
Audio is muted for all alarm conditions except Alarming Eb/No and No Video Data.
•
LED's are unique for each of these modes.
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3.2
LED & ALARM / WARNING CONDITIONS
The following definitions apply throughout this section:
Table 14. LED and Alarm Conditions
Blink
LED is OFF for 1 second, and then blinks on count times (ON for 250
mS and OFF for 250 mS). This overall pattern is continued.
Flash
ON for 100mS, OFF for 100mS, …
Flutter
ON for 50 mS, OFF for 50 mS, …
AMBER
RED and GREEN turned ON at the same time.
The UNITY4422 has eight front panel LED's, each of which is described below.
3.2.1
Carrier (Green)
ON if receiver board is tracking.
3.2.2
RF LEVEL (Green)
ON if RF level is OK and receiver board is tracking a carrier. FLASH if RF level is HIGH or
LOW and receiver board is tracking. Otherwise OFF (receiver board is not tracking).
3.2.3
MPEG (Green)
ON if synced on MPEG stream. FLASH if no MPEG sync but locked on carrier. Otherwise OFF.
3.2.4
Cue (Green)
ON while any relay is closed. Also, relay must be ON for a minimum of 1 second. Otherwise,
OFF.
3.2.5
COMPEL™ (Green)
FLUTTER if COMPEL addressed to unit within last 5 seconds (keep alive commands are not
considered to be addressed to unit). ON if COMPEL Received within last 2 minutes. OFF if
COMPEL is not required or unit is not in Tracking mode. Otherwise, FLASH (unit is in
Tracking and no COMPEL within last 2 minutes).
The COMPEL light will also be on for approximately 2 minutes when the unit is first turned on
or reset.
3.2.6
Authorized (Green)
ON if authorized for current program and have MPEG sync. This LED will also be ON if
program being received is unencrypted. It will FLASH if not authorized for the current program.
It will be OFF if no program is available.
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3.2.7
Alarm (Red)
FLASH if any of following: (see Table 14, Page 30)
1. EEPROM Boot Failure.
2. Receiver board diagnostics Boot failure.
3. Receiver board communications Boot failure.
4. Secure micro / host ID mismatch Boot failure.
ON if any of the following:
1. Receiver board run-time failure.
2. Fade mode > 10 seconds.
3. Installation mode > 10 seconds.
4. Carrier table search mode.
5. Header search mode.
6. Satellite search mode.
7. Alarming Eb/No.
8. No MPEG data > 5 seconds and locked on carrier.
9. No video data > 5 seconds and have MPEG sync.
10. Not authorized for current program.
11. Selected program not available.
12. Overheating.
Otherwise, OFF
When an alarm or warning condition is active, that condition is displayed on the LCD. The IRD
will not indicate (either on LED's or LCD) multiple conditions; it will indicate only the most
critical condition. Alarm conditions are considered more critical than warning conditions, and
the list of alarm and warning conditions shown above and below are listed from most critical (1)
to least critical (Item 4 or 12 above).
Note that the Alarm LED is only ON when the unit is either overheating or unable to produce video.
3.2.8
Warning (Amber)
ON if any of following:
1. E-mail received but not read. (See the Caution, Page 32, and Section 3.9.3, Page 42.)
2. Secure micro run-time failure.
3. Marginal Eb/No and locked on carrier.
4. RF level is HIGH.
5. RF level is LOW.
6. Fade or Installation mode < 10 seconds.
7. No MPEG data < 5 seconds and locked on carrier.
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8. No video data < 5 seconds and have MPEG sync.
9. COMPEL required and no COMPEL within last 2 minutes.
10. Selected audio not available.
Otherwise, OFF.
* * * CAUTION * * *
E-mail messages should be read as soon as possible after receipt, because
each message will be over-written by the next one.
3.3
RELAYS
This IRD supports 1 alarm relay and 2 solid state user relays. The user relays are controlled via
COMPEL™ and the modem/terminal interface.
Note that the alarm relay is de-energized when the IRD’s power is off and the relay outputs are
shorted together.
3.4
PROGRAM SELECTION
Programs may be selected by network control and (if allowed by the network) by local user. A
multiplexed MPEG transport stream may support some number of separate programs. Each
program has a single video and some number of associated audio data streams associated with it
in the main transport stream. The programs are designated with a number, but if none is supplied
by the selection command (e.g. the ‘*’ designation) the lowest in number order will be selected
by the IRD.
3.5
AUDIO HANDLING
The selected program (see Section 3.4) has a number of separate compressed-audio data streams
associated with it. These are assigned 3-letter mnemonic designations. Any of these may be
routed to either the Ch1 or Ch2 stereo outputs on the back of the IRD, but not both at the same
time. The selected stream is a stereo or dual-mono signal. It may be routed to the L and R
connections in a specific relationship to the original audio connections at the uplink MPEG
encoder unit:
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Table 15. Audio Handling
Stereo
Original encoder L and R routed to corresponding L and R outputs on IRD
Reverse Stereo
Original encoder L routes to IRD R output, while original R routes to the L
output
1 on both
Original encoder L is routed to both L and R outputs on IRD
2 on both
Original encoder R is routed to both L and R outputs on IRD
3.6
SOURCES OF CONTROL
The IRD can be controlled via COMPEL™, terminal, modem, and Display / push buttons. Each
of these methods of control is explained in the following sections, but you should see the
COMPEL manual for a complete explanation of the COMPEL system.
3.6.1
COMPEL™
The COMPEL command stream from the uplink is usually the unit’s primary source of control.
This asynchronous stream is mux’ed into the aggregate MPEG data stream at the uplink.
3.6.2
Terminal
You may access the terminal command interface by setting Serial Port 1 or Serial Port 2
“device” to “Terminal” (using front panel control, if enabled by your Network Control).
Terminal default settings are 19200, N, 8, 1. You may then access the terminal commands if you
have a terminal installed. These commands appear on a help screen and are documented in
Appendix A of this manual. With the exception of the “R” and “H” commands, they are only
available if local control is enabled.
3.6.3
Modem
The modem command interface is similar to the terminal interface. That is, it does not use
special handshaking or special control characters for this interface, and only supports autoanswer modems. In fact, the IRD does not distinguish between an attached terminal and a
modem. To access the modem command interface, the serial port 2 “device” must be set to
“Modem” (using front panel control). To access user commands, the user must enter the correct
password at the prompt. The user then retains access until the “OH” command is received, or
two 10-minute periods pass with no user input. As is the case for the terminal, the user
commands are restricted when local control is disabled.
3.6.4
PAL / NTSC Selection
The UNITY4422 accepts both PAL and NTSC video. Whether the input is PAL or NTSC is
auto-detected, and the appropriate parameters are set under software control.
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3.6.5
Display / Push Buttons
This interface supports a variety of controls and status displays, including the following:
1. Status.
2. Selecting and configuring the Serial Port devices.
3. Setting the LNB LO's.
4. Front panel email.
See the Display / Push Button Menus, Appendix A, for complete details.
3.7
SERIAL PORT - COMMAND SYNTAX
The UNITY4422 contains two serial ports. These are labeled Serial Port 1 and Serial Port 2.
Each can support a printer, a terminal, a modem, or an auxiliary data device. However, there are
restrictions as to what device combinations can be used at one time. There are only 2 rules for
this, and they are shown below. (Also, see Table 16, this Page.)
1. The same device type (Printer, terminal/modem, or aux. data) cannot be configured
on both ports at the same time. (Terminals and modems are considered the same
device type. See Rule 2.)
2. The combination of a terminal on one port and a modem on the other is not allowed.
The statements on the second line of Table 16 tell which devices can be connected to Serial Port
2 when the device on the top line is connected to Serial Port 1.
Table 16. Serial Port Device Combinations
Serial Port 1 Printer
Aux. Data
Serial Port 2 Any but Printer Any but Aux. Data
Terminal
Modem
Any but Terminal
or Modem
Any but Terminal
or Modem
Port Communication is fixed at 1 stop bit and 8 data bits, and there is no handshaking. The
serial port’s behavior for each of its device types is shown in the following table.
Table 17. Serial Port Settings
Device
Serial Port Behavior
Printer
Configured to B, N, 8, 1 (* see note 1 below.).
Aux. Data
Configured to B, N (* See note 2 below.).
Terminal
Configured to 19200, N, 8, 1. The unit responds to the terminal/modem
commands described in Sections 3.6.1 & 3.6.2, and Appendix A.
Modem
Configured to B, N, 8, 1 (* see note 3 below.). The unit responds to the
terminal/modem commands described in Sec. 3.6.1, 3.6.2 and Apdx A.
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Note 1. For Printer: ‘B’ may be 1200, 2400, 4800, 9600, or 19.2k baud; ‘P’ may be ‘O’ for Odd, ‘E’ for
Even, or ‘N’ for No parity.
Note 2. For Aux Data: ‘B’ may be 1200, 2400, 4800, 9600, 19.2k, or 38.4k baud. ‘P’ may be ‘O’ for Odd,
‘E’ for Even, or ‘N’ for No parity.
Note 3. For Modem: ‘B’ may be 9600, or 19.2k baud; parity is always ‘N’ for No parity.
* Note: Baud rate and parity are configurable for the Printer, but the serial ports do not support
parity for modem applications.
Supported baud rates are 1200, 2400, 4800, 9600, 19200, and 38400, while supported parity
types are None, Odd, and Even. When a serial port configuration command is received from any
control source, the specified configuration is immediately stored for the specified device. The
serial port is configured accordingly, whenever the serial_port.device is device when local panel
control has been enabled by the satellite program provider. If serial_port.device is device at the
time this command is issued, and the configuration differs from the current configuration, the
output_buffer is cleared and the port is reconfigured.
When connected to a Terminal, the port may also be configured for baud rate, etc. Care should
be taken when changing these settings so they agree with the internal terminal settings. If you
change the baud rate of the Terminal Port to 9600, you will have to change the terminal baud
rate to 9600 before you can communicate through the Terminal Port.
The following table specifies which outputs are routed to which device for each of the valid
device combinations.
Table 18. Serial Port Operation
Serial1 / Serial2
Output (Type of Data)
Printer / Terminal
COMPEL Email
To printer if COMPEL_email is
detected & raw data is not being
processed.
COMPEL Requested
Reports
To printer if raw data is not being
proecssed.
Raw Uplink Data.
To printer if raw data is being
processeddetected.
COMPEL Email
Same as for printer / terminal.
COMPEL Requested
Reports
Same as for printer / terminal.
Raw Uplink Data
Same as for printer / terminal.
Printer / Modem
Port Data Sent To & Conditions
3.8
RECEIVER FUNCTIONS
Note that throughout this manual, the term valid carrier means the absolute value of the
difference between the LNB LO and the carrier is > 950 MHz and < 2150 MHz.
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3.8.1
Perms, Temps, Searching & Settings
The term settings is used throughout this document and includes the following parameters:
Table 19. Settings Parameters
{RF_In}
Value from 1 - 4, specifying the RF input (if RF Switch is installed)
Carrier
The downlink frequency specified in MHz with up to two decimal places.
This value’s absolute difference with the LNB LO frequency must be ≥ 950
MHz and ≤ 2150 MHz.
Data_rate
The data_rate is the MPEG2 transport rate in Mbps. (See Table 3, Page 16,
for allowed ranges.) This value can have up to three decimal places.
FEC_rate
The inner FEC code ratio, which can have one of the following values: 1/2,
2/3, 3/4, 5/6, or 7/8.
Tag_site
Value of 0-15 specifying the location of this carrier’s tag frequency. ‘15’ is
reserved for ‘No Tag Required.’
[program]
The program stream. If omitted or an ‘*’ is entered, the unit will select the
first available program stream. If the number is in the range 1-65535, the unit
will use only the program stream with the corresponding PID number. If a
string is entered, the unit will use only the program with the corresponding
identifier. The unit will support a minimum of three programs. If a carrier
contains more than three programs, the unit will only use the first three.
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The IRD is acting on one of three groups of settings at any given time, each of which is
described in the following table:
Table 20. Group Settings
Settings Group
Description
Temp
These settings are entered via COMPEL or the TEMP / TEMPCH
terminal commands. The unit is said to be inserting when it is
configured to the temp settings. The maximum length of an insert is
approximately 18 hours (65535 seconds). An insert terminates when (1)
it times out, (2) an ABORT command is received, (3) power is cycled,
or (4) an invalid header is seen. Any Temp commands received while
the receiver is currently inserting are ignored. If a Perm command is
received while inserting, the perm_settings are updated but not acted on
until the insert is terminated.
Perm
The perm_settings are entered via COMPEL or the Terminal
Commands PERM and PERMCH, or automatically from within a search
mode (see below). The group perm_settings is the only settings group
stored in NVRAM.
Search
The search_settings are active while in Carrier Search, Header Search,
and Satellite Search modes. When the unit finds what it is looking for
in the search mode, it copies the search_settings to the perm_settings.
These are then considered to be the active settings.
3.8.2
Signal Quality Monitoring
The IRD provides the following signal quality information:
Table 21. IRD Signal Quality
Eb/No
An average Eb/No reading. It is updated approximately every 500 mS, and
is a 10 second running average of these updates.
RF Level
HIGH, LOW, OK. See Table 2, Page 15.
Signal Fades
A counter is maintained for transitions from Tracking to Fade mode.
RF Glitches
A counter is maintained for carrier “hits”. A “hit” is when the receiver
board detects one or more uncorrectable FEC frames, yet small enough not
to cause a transition from Tracking to Fade mode.
Shows the percentage of time that the unit has been locked on a carrier
since that carrier was first acquired (timer.locked /
timer.since_first_acquired).
Availability
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3.8.3
Frequency Tagging
Under normal operation, the IRD can only acquire carriers that contain frequency tags. These
tags are inserted in the COMPEL control stream at the uplink and are used for identifying the
carrier’s frequency. Tagging was mandated because, without tags the IRDs could have locked
on some other nearby (adjacent) carrier while looking for the intended carrier. The tuning can be
off by a small amount due to minor offsets in the LNB and within the receiver itself.
Traditionally, the tags have been sent at a rate of every 100 or 125 mS. The IRD supports both
single and multiple tags. The tag_site, which is part of the settings, tells the receiver which of
these 17 possible tags to use. To reduce processing overhead, the unit only looks for tags while
in the Get Tag sub-mode or when tag_testing.
3.9
DISPLAY / PUSH BUTTONS
3.9.1
Overview
The front panel consists of a 2 X 20 Display and six push buttons. Essentially all control
available through the terminal is available via the front panel. The front panel can also be used to
view a COMPEL down-loadable text message. This message is volatile and can contain up to
512 characters. The Display can be in one of the following modes:
Table 22. Display Modes
Mode
Description
HOME
Display shows ALARM or WARNING message (if applicable), or RF
switch position, carrier frequency, program ID and TEMP (if inserting).
Display returns to this screen after push buttons are inactive for 5 minutes
or if both ENTER and SELECT buttons are pressed simultaneously.
SN
Unit Serial Number displayed for a few seconds if ENTER is pressed
while in HOME screen.
MENU
Entered from Home mode. Display shows menu for each available
command group.
PARAMETER
Entered from Menu mode. Display shows specific parameter associated
with command group.
EDIT
Entered from Parameter mode. Display blinks edit field when in this
mode.
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3.9.2
Push Button Functions
Table 23. Push Button Functions
LCD MODE
HOME
MENU
PARAMETER
EDIT
PUSH
BUTTON
FUNCTION
SELECT
N/A
ENTER
Shows unit serial number for approximately 2 seconds
∧ (UP)
N/A
∨ (DOWN)
N/A
> (RIGHT)
Enters MENU mode.
< (LEFT)
Enters MENU mode.
SELECT
Enters PARAMETER mode
ENTER
N/A
∧ (UP)
N/A
∨ (DOWN)
N/A
> (RIGHT)
Scrolls forward through MENU selections.
< (LEFT)
Scrolls backward through MENU selections.
SELECT
Enters EDIT mode or exits EDIT mode (depending on displayed
parameter)
ENTER
N/A
∧ (UP)
N/A
∨ (DOWN)
N/A
> (RIGHT)
Scrolls forward through PARAMETER selections.
< (LEFT)
Scrolls backward through PARAMETER selections.
SELECT
Cancels changes, leaves EDIT mode, and enters PARAMETER
mode.
ENTER
Enters changes.
∧ (UP)
Increases value of number in edit field or scrolls up to next choice
in list. In number field, button increments once per button push or
can be held to scroll. Button acceleration occurs when pushbutton is depressed for more than 5 seconds.
∨ (DOWN)
Decreases value of number in edit field or scrolls down to next
choice in list. In number field, button decrements once per button
push or can be held to scroll. Button acceleration occurs when
push-button is depressed for more than 5 seconds.
> (RIGHT)
Advances display to next edit field (if applicable).
< (LEFT)
Displays last edit field (if applicable).
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Table 24. LC Display Menus
Note: Screens marked by ‘*’ are not shown if local control is disabled (either programmed
into non-volatile memory at factory or set by COMPEL command). Exception: “Audio
Settings” screen is shown but only “Attenuation” may be changed by local user.
MAIN LEVEL
SECOND LEVEL
THIRD LEVEL
Home Screen
EMAIL
Hardware Setup
N/A
Email Msg
Current Settings*
N/A
RF Feed (Optional), Carrier Frequency and Data-rate
FEC rate, Tag Site, and Program #
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