NEC of America 5808 Unlicensed 5.8 GHz Point to Point Microwave Radio User Manual Manual Appendix

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Document ID	852930
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Document Description	Manual Appendix
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Permanent Confidential	No
Supercede	No
Document Type	User Manual
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Filesize	60.82kB (760223 bits)
Date Submitted	2007-10-09 00:00:00
Date Available	2008-02-21 00:00:00
Creation Date	2007-09-24 17:35:51
Document Lastmod	0000-00-00 00:00:00
Document Title	Manual Appendix

ROI-5048454151 E
October. 2003
APPEN DlX
APPENDIX
MEASUREMENT PROCEDURE FOR
5.8 GHz 15/28/50 MB NLite L
DIGITAL RADIO SYSTEM
(1+o SYSTEM)
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1. GENERAL
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This Appendix provides instructions for measuring transmit radio
frequency (RF), transmit RF output power, RF occupied bandwidth and bit
error rate (
BER) at each station after the system liflevup has been
completed. These measurements are optional, so they do not appear in the
annual maintenance schedule
2. PRECAUTIONS
The follow
ing precautions must be carefully observed during
maintenance,
Danger:
Caution:
Caution:
The 743 V DC power is superimposed on the center
conductor of the coaxial cable between the MDP and HIP.
Connecting a measurement set directly to this port may
damage the test equipment and touching the coaxial cable
core may cause electrical shock. So, turn off the power
switch on the MDP bdare disconnecting coaxial cable
between the MDP and TRP.
To protect the internal circuits against electrostatic
discharge, engineers are requested to wear a wrist band
and connect it to the ground (G) terminal for Electrostatic
Protection (ESP) before detaching the top cover (see Fig.
A-l).
Do not turn on the power of the MDP leaving cable
connection between the PC and LCT PORT of the MDP.
After all operation for maintenance have been completed,
perform MAINT OFF setting.
Caution: It is recommended that you connect the MDP to T RP after
the WRXfieqaency setting has been set on the MDP.
APPENDIX
A-Z
(D (9 Emma
l EDD;
ROI-804845
FRONT VIEW FOR 1+0 SYSTEM
MDP
Fig. A-1 Location of Electra Static Protection Tcnninal
(a)
(b)
(C)
(d)
(e)
(f)
Before beginning measurement, notify the opposite station that
measurement is about to begin.
During measurements, service will be intemzpiedl
Afier equipment stan-up, allow the equipment in warm up for at
least 30 minutes.
Afier completing the measurement, restore all connections to
normal,
Before disconnecting the waveguide, connecior or antenna from
the RF lN/OUT of the TRP, turn off the PW'R switch on the MDP
or set TRP to TX mute condifinn (this control is performed by PC
as shown in the following procedure).
During measm'ement, the MDP and TR? are set to maintenance
ON condition using a PC as shown in following procedure
ROI-504845
3. TEST EQUIPMENT AND ACCESSORIES
APPENDIX
The test equipment and special accessories listed in Table 1 are required
for system maimemmee. Iftecommended test equipment and accessories
are not available, equivalents may be used.
Table A4 Test Equipment and Accessories Requlred
TEST EQUIPMENT/ACCESSORY
Frequency Counter
TYPE/ORDERING CODE
HP53152A
Spectrum Analyzer
HP 8564EC
Power Meter
HP E4418B
Puwer Sensor
HP 8487A
BER Test Se1
HIP E7580A
OW/RX LEV Mouiwr“ and Headset
Personal Computer (PC) *
Screwdriver
Note: 1, ‘ 7712 OW/RXLEVMonitor oyerates an a dry battery (6F22/
917). When the OW/RX LEV Monitor will nut be usedfor a
long period, remove the battery to avoid damage from
battery leakage and corrosion.
A4
APPENDIX ROI-804845
3.1 LCT Connection
MDP SIDE
LCT CONNECTOR
SIGNAL
NM ;
a RTS
7 CTS ?
s DTR
5 GND
DSR
RXD
i RXD TXD
DCD CD
DSUB CONNECTOR MODULAR CONNECTOR
(9 Pins)
Fig. A-2 RS~2326 Cabin Pin Assignment
Rszszc
CABLE
Fig. A-G LCT Setup
A-4
ROI-304845
APPENDIX
The communication/serial port settings of the personal computer used as
local crafi terminal (LCT) is listed below.
Bits per second:
Data bits:
Parity:
Stop bits:
Flow control:
Emulation:
Transmission:
(ASCH Sending)”
Receiving:
(ASCII Receiving)‘
19200
None
Hardware
VTIOO Video Terminal
Add CR at end of line : N0
(Send line ends with line feeds:Na)*
Local echo : No
(Echo typed characters locally : No)*
CR: No
(Append line feeds to incoming line ends
: No)‘
Return on the right edge: Yes
(Wrap lines that exceed terminal width
: Yes)”
Fame incoming data to 7-bit ASCII: No
‘ Windows HyperTerminal settings.
Microsofi and Windows are either registered trademark of
Microsofi Corporation in the United States and other countries:
These display screens are shown in Fig. A-4.
News]. For ogemting the LCT praperbz, do not use the arrow keys
"—J, , etc. " (as generates the ESC code).
2. The operation check by HyperTerminal attached to Windows is
perfbrmed by Windows 95/98, When using the HyperTerminaI
made of Windows 2000 or other Windows operating system,
the characters may not be displayed correctly
A-5
APPENDIX ROI-804845
The cable connector pin assignments are shown in Fig. A-2, The length of
the RS-232C cable between the personal computer and MDP should be
less than 15 m.
Note: Please refer to the above screenshots as an example for the
HyperTerminal Setting.
A-G
ROI$04545 APPENDIX
4. MEASUREMENT PROCEDURE
The general procedures for Loop back, transmit radio frequency (RF),
msmit RF output power, RF occupied bandwidth and BER measurement
are described below.
(5) (5) (7) (B) (2)
POWER
”EI'EI'ADED-D": ------------- -— 1
(CONN 2) ( )
(1) (9)
----- D - - (3)
(REAR VIEW) {CONN 1)
TRP 2 <9)
‘ - > D - * (4)
(CONN 3)
TEST EQU|PMENT REMARKS
Power Meter
Power Sensor
Frequency Counter
Spectrum Analyzer
WG Adapler For 10-38 GHz band only
Tmnsducer For 10-38 GHz band only
RF cable
Attenuator (20 dB)
Adaptor
Flg. A4 Transmit Radio Frequency, Transmll RF Output Power and
RF Occupied Bandwldlh Mount-mam: Setup
APPENDIX ROI-$045“
4.1 Maintenance Mode
Procedure
Steg Procedure
1 Connect the PC to the LCT PORT of the MDP using an
RS-232C cable as shown in Fig. A—3,
2 Tum on the puwer switch on the PC. Then, start the
cumunication sofiware (egt Hyper’l'enninal),
3 Access Login name “Admin” and enter valid password,
chin : Admin
Password : mm“
— NEC PDH RADIO VER. XXXAXX _,.
0. Logout
1. Alarm I Status
2. Performance Monitor
3. Provisioning Data
4. System Configuration
5. Inventory Data
6. Relay / House Keeping
7. Maintenance
EnlerSelectlon : 7
4 Press the “7" key for Maintenance and press the “Enter” key,
— Maintenance ——«
1. MAINT Mode (OFF)
2. Central
3. ResetCPU
4. SetCaIendar
5. Fassward Setting
8. Fregrarn Downlnad
Enter Setecfion : 1
5 Press the “1” key and “Enter" key,
—— MAINT Mode --
1. On
2. 0"
Enter Selection : 1
A-8
ROI-504845
APPENDIX
Erfidure
m dure
6 Press the “1” key and “Enter” key,
— Malmenance ——
1. MAINT Mods (ON)
2, Contro‘
3. Reset CPU
4. Set Calendar
5, Password Setting
6. Frcgmm Dewnload
Enter Se‘scllon :
7 Check that the MAINT Mode turns m ON,
4.2 Transmit Radio Frequency Measurement
(a) Test Setup and Accessories Required
See Fig, A-4 (CONN 1).
(h) Procedure
$29 Pr dure
Caution: During measurement, service will be interrupted.
1 Set up as shown in Fig. A—4 (CONN 1),
2 Conneet the PC to the LCT PORT of the NDP,
3 Turn on the power switch on the PC. Then, start up the
communication software (e.g., Hypefl'etminal),
4 Set the MAINT Mode to ON (refer to para, 4.1),
5 Press the “2” key and “Enter" key, the following uppens,
— Control —-
1. RF Frequency
ATPC Mama! Control
TX Mute
CW
IF Loopback
Main signal Loopback (Near End)
. Main Signal Loupback (Far End)
11. Antenna Alignment Mode
16. LAN Device Reset
Enter Selecfion 1
mwsopp
Notes: Beige 2 ATPC Manual Control is not displayed in MTPC
ma .
A-9
APPENDIX
A-10
ROI-804845
Procedure
$2 Proce
6 Press the “6” key and “Enter” key on the Control menu, the
following Modulation carrier our/off item is displayed,
_._cw w.
1, On
2. OH
Enter Selection : 1
This will sweet the radio link mnnectlon.
Are You Sure 7 (YIN) : Y
Success !!
7 Press the “1” key and “Enter“ key, press the “Y” key and
‘Enter" key, then, unmodulated signal is transmitted,
8 Check that the set up is as shown in Fig. A-4 (CONN 1),
9 Measure transmit radio frequency with the fi-equency counter,
Requirement:
- $10 ppm of assigned radio frequency
10 Disconnect frequency counter from RF IN/OUT terminal,
11 Press the “6" key and "Enter” key,
12 Press the “2” key and “Enter" key, and press the “Y“ key,
"Enter" key,
——cW—-
1. On
2. Off
Enter Selection : 2
This will silent the radio link connection.
Are You Sure 7 (YIN): V
suceess ll
13 Continue next measuring item, if not, restore all connections
and reset the settings to normal
Raise-4345 APPENDIX
4.3 Transmit RF Output Power Measurement
(a) Tbst Setup and Accessories Required
See Fig. A»4 (CONN 2)
(b) Procedure
SEE flooedure
Caution.- Dun'ng measurement, service will be interrupted
1 Set up as in Fig. A~4 (CONN 2),
Connect the PC to the LCT PORT of the NEDP (see Fig A8),
Set the MAWT Mode to ON on the PC (refer to para 4.1),
awn
Press the “2” key and “Enter” key to display the “Control" menu
on the PC,
5 Press the “2” key and “Enter” key for AT PC Manual Control,
—— ATPC Manual Conlml -—~
14 Manual
2. Auto
Enter Selection : 1
— ATPC Manual Control —
ATPC Manuel PWR (MlN to MAX [GED
Enter Selection : a
This wlll aflecl the radio link connection.
Are You Sure ? (VIN): Y
Success ll
6 Press the “1" key and “Enter” key,
7 Press the “0” key and “Enter" key to set the 0 dB attenuatiun,
8 Press the “Y" key and “Enter" key,
9 Measure transmit RF output power using the pnwer meter,
Requirement:
- 10.5 GHz Band:+21dBm 11.5 dB
10 Disconnect power meter from the RF 1N/0U1‘ terminal.
ll Continue next measuring item, if not, restore all connections
and reset the settings in normal.
A-11
APPENDIX ROI-804545
4.4 RF Occupied Bandwidth Measurement
(a) Test Setup and Accessories Required
See Fig A—4 (CONN 3)
(b) Procedure
522 Procedure
Caution: During measurement, service will be interrupted
1 Set up as in Fig. A-4 (CONN 3),
2 Set functions af the spectrum analyzer as follows:
- Bandwidth: 30 kHz (for 8 x 1.5 NE)
100 kHz(for 16 x 1.5 MB)
- Vertical: 10 dB/div
- Horizxmtal: 5 MHsziv
- Frequency: Assigned transmit radio frequency
3 Connect the PC In the LCT PORT of the MDP (see Fig A-3
CONN 3),
4 Set the MAINT Mode to ON (refer to para. 4.1),
5 Press the “2” key and “Enter“ key to display the “Control" menu
(referto para. 443),
6 Press the “2” key and “Enter” key for ATPC Manual Cnntrol
item (refer to para. 4.3),
7 Set the ATPC Manual PWR in ATPC Manual Central to 0 (“3
(refer to pets. 4.3),
8 Press the “6” key and “Entef‘ key for CW item,
9 Press the “1" key and “Enter” key to set the CW to ON,
__ cw _.
1. On
2. OR
Enterelemlon: 1
This will street the radlo llnk connecuenl
Am You Sure 7 (YIN) : Y
Success I!
A-12
ROI-504845
10
11
12
13
14
15
APPENDIX
Proce
Press the “Y“ key and “Enter” key,
Set the appearance of carrier lo the centre by turning frequency
dial on the spectrum analyzer,
Adjust reference level dial an spectrum analyzer so that the CW
signal level is set to 0 dB,
Repeat Step 5 m S, and press the “2” key and “Enter“ key to set
the CW to OFF,
Confinn that the displayed spectrum on the spectrum analyzer is
within the specified as Shawn in Fig. A-S,
Disconnect spectrum analyzer from RF m/OUT terminal,
restore RF conneetion to normal and reset the settings to normal.
A43
APPENDIX
A-14
SPECTRAL POWER
osnsn—v (as)
SPECTRAL POWER
DENSITY (as)
ROI-804845
4.575 ow am
4 u '5 as do
FREQUENCY FROM NOMINAL CARRKER FREQUENCY (MHZ)
o a 5 was
+2 4: <4 ofi ‘5 +10 +12 414 015
FREQUENCY FROM NOWNAL CARRIER FREQUENCY (MHz)
Fig. A-5 Limits of Spectral Power Density
ROI-£04345
APPENDIX
5. BER MEASUREMENT
Perform BER measurement for 1.5 MB main channel in FE loop back
between two stations. (BER measurement can not be performed on channels
which are assigned to LAN signal)
5.1 8/16x 1.5 MB System
(a) Test Setup and Accessories Required
See Fig, A-5t
(b) Procedure
Stag
Prgcedure
Caution.- During measurement, service will be interrupted.
Set up the measuring circuit as shown in Fig. A-6,
At station A, set the output and input signal mode of the BER
test set (SENDING/RECEIVING UNIT) as follows:
' Bit rate: 14544 Maps (ANSI T1, 102)
- Code format: BSZS or AMI Code
- Impedance: 100 ohms, balanced
At station A, connect the PC to the LCT of the NDP (see Fig.
A4),
Set the MADIT Mode to ON (refer to para. 4.1),
Press the “2" key and “Entef’ key on the Maintenance menu to
display Control items,
Press the “9” key and “Entef’ key for Main Signal Loapback
(Far End).
Pms the “1” key and “Entef’ key,
Enter Selecflon : 5
— Main Signal Loopback (Far End) —
1. Selected CH Luopback
2. All on Loopback on
Enter Selection: 1
A4 5
APPENDIX ROI$D4545
$2 Emilie
8 Press the “channel number you want” and “Enter" key, then, the
following appears,
— Main Slgnal Loopback (Far End) —-
Loopback Status (CHM-DB) :
(onus-18
CH Select (CHM-16): 5
Notes: I. "-" indication signifies control 017 condition.
2. ""' indication signifies control on condition
3. "ii" indication signifies restricted channel condition
4. In case the FE loop back eontml has been applied fimn
the opposite station, the "Z " is displayed
5. The FE loop back control is unavailable for the channel
which is inhibited by "not used channel alarm ".
-— Main Slgnal Loopback (Far End) m
1. On
2, Ofl
Enter Selection : 1
This will affect the radio link connection.
Are You Sure 7 WIN) : Y
Success ll
9 Press the “1" key and “Enter” key to perform loop back
function,
10 Press the “Y" key and “Enter” key,
ll The associated channel at opposite station will be in loop back,
~—- Main Signal Loopback (Far End) -—-
Loopback Status (Cl-101 -08
(CH09-16
CH Select (CH01-16 .
12 Measure BER at each channel for 10 minutes to verify that it is
indicated No Error,
13 Press the corresponding channel number and “Entef’ key,
14 Press the “0" key and “Enter“ key to restore loop back function,
15 Restore all connections to normal,
16 Restore the settings to normal.
A-18
APPENDIX
ROI$04845
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APPENDIX ROI-504645
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A-18
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