GTR 8000 Base Radio
9.11.1 How To Replace a Duplexer (700/800 MHz)
Procedure Steps
1
Wear an electrostatic discharge (ESD) wrist strap and connect its cable to a verified good ground. This strap
must be worn throughout this procedure to prevent ESD damage to any components.
2
Disable the base radio with the duplexer module being replaced, as follows:
a. Connect to the device modules Ethernet service port using Configuration/Service Software (CSS). See
Connecting Through an Ethernet Port Link, page 4-11
b. Select
Service → Test Measurement Screen
from the menu.
c. Click
Change to Service Mode
.
Step result:
The base radio is disabled.
3
Set the rocker switch on the front of the power supply to the OFF (0) position.
4
Remove the duplexer tray from the rack, as follows:
a. Label and disconnect the Rx output, Tx input, antenna output, and ground cables from the duplexer.
b. Using a T30 bit, remove the two screws which secure the tray to the rack.
c. Slide the tray out the front of the rack.
5
Remove the duplexer from the tray, by removing the T20 screws that attach it to the tray.
6
Install the new duplexer in the tray, as follows:
a. Place the new duplexer in the tray, in the same location and orientation as the module that you removed.
b. Secure the replacement duplexer to the tray, using the T20 screws you previously removed.
7
Re-install the duplexer tray in the rack, as follows:
a. Slide the tray in the front of the rack.
b. Using a T30 bit, secure the tray to the rack with the two screws you previously removed.
c. Reconnect the Rx output, Tx input, Antenna output, and ground cables to the duplexer.
8
Set the rocker switch on the front of the power supply to the ON (1) position.
9
Enable the base radio as follows:
a. Select
Service → Test Measurement Screen
from the menu.
b. Click
Change to Normal Mode
.
Step result:
The base radio is enabled.
9-36
6871022P86-A - November 2012
Содержание GTR 8000
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