GTR 8000 Base Radio
2.1.1.3.2 Transceiver Option Card Intercom Button
There is one intercom button on the front of the transceiver option card, accessible behind the fan module. Pressing
the intercom button toggles the intercom function between the ON and OFF states.
Figure 2-4
Transceiver Option Card Intercom Button (behind fan module)
2.1.1.3.3 Transceiver Ports (Rear)
The transceiver interconnects to the backplane using a 120-pin HVDML digital connector and 8-pack RF connector,
as shown in the figure. These connections handle multiple signals including power supply communications, power
amplifier communications, fan interface, and peripheral interface. The digital connection receives alarm data and the
site controllers' TDM signals, which are used to pass reference and control data to the base radio.
Figure 2-5
Transceiver Module (Backplane Connections)
•
Single Receiver Input:
An RJ-45 Ethernet port on the base radio backplane is cabled to a site LAN switch
for this channel. The backplane also provides an RF connection to the transceiver for receive (Rx) path A.
•
Dual Receiver Input:
RJ-45 Ethernet ports on the base radio backplane are cabled to corresponding ports on
the site controller backplanes (HPD). The backplane also provides RF connections to the transceiver for
receive (Rx) paths A and B (HPD and TDMA).
2.1.2 Function of the Power Amplifier Module
The PA module is not applicable in a GPW 8000 Receiver.
2-4
6871022P86-A - November 2012
Summary of Contents for GTR 8000
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