Connections - Rear (Hpd); Figure 3-9 Base Radio - Hpd Backplane; Table 3-6 Base Radio Backplane Connections For Hpd - Motorola GTR 8000 Manual

GTR 8000 Base Radio
The EXT FREQ REF input on the rear of the device is high impedance. An external termination is
needed to properly terminate the cable connected to the input. It is recommended that a BNC "T" and a
50 Ohm BNC termination be connected to the input to terminate the cable. If the cable is daisy chained
(multiple base radios connected together and driven by one TRAK/PSC output), only the last base radio in
the chain has the termination.
3.4.6 Connections – Rear (HPD)
The base radio connects with each of the site controllers and to the transmit and receive paths.
Figure 3-9 Base Radio – HPD Backplane
Table 3-6 Base Radio Backplane Connections for HPD
Port / Type
SC A port,
RJ-45
SC B port,
RJ-45
3-26
Device it connects to:
Site Controller module A
Site Controller module B
Port /
Description
Type
Base radio Connects to site controller A base radio port
port, RJ-45 for this channel.
The length of the cable between the
site controller and the base radio
should be no greater than 30 feet.
Base radio Connects to site controller B base radio port
port, RJ-45 for this channel.
6871022P86-A - November 2012