Chapter 2 - Commissioning; Overview; Preliminary Verifications - Sagem -LINK F Installation And Operation Manual

SAGEM-LINK F
Installation and Operation Manual

2.1 - Overview

This chapter explains how to verify Sagem Link F correct operation after installation. Testing
procedures are given in order to check radio system is operating according to the specifications.
The tests performed are :
•
Frequency Scan
• Receive Signal Level
•
Tributary Tests
•
Engineering Order Wire (optional)
•
Alarm Relays and I/O Dry Loops Test (optional)
•
1+1 Verification (optional)
• BER measurement
Required test equipment
•
Laptop Computer with a serial interface
•
Sagem Link F Pilot software
• 2 Mbit/s Bit Error Rate Analyzer
•
Digital voltmeter
Sagem Link F Field Commissioning Form
A field commissioning form is provided in order to record all measurement data and remarks during
commissioning operation.
Note
The Bit Error Rate tests are made only with the 2 Mbit/s signals. For IDU using Ethernet option, it will
be necessary to choose a configuration with at least one 2 Mbit/s tributary available. Refer to Chapter
6 for more details.

2.2 - Preliminary Verifications

Before beginning commissioning tests, it is necessary to check the following :
•
Verify all equipment for damage occurred during installation
•
Verify that all equipments are properly mounted
•
Verify antenna polarization
• Check ODU, cable and IDU groundings
•
Measure DC Input Voltage on each terminal and record it on the commissioning form
•
Connect laptop computer to the PC DB9 connector on the IDU front panel, and run the Sagem
Link F Pilot software. Be sure to be logged in super user mode (Default password = 2345). On
the main screen verify and change if necessary :
- Local and Remote terminal transmit frequency
- Modulation type and Capacity
- Local and Remote terminal nominal transmit power, ATPC should be in "OFF" position
Tributary Impedance
-
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288055571-04
Chapter 2
Commissioning
Page 36/142
Issue 04 : July 2005