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MN003286A01-E
Chapter 3: GTR 8000 Base Radio Installation
XCVR Port / Type
Reference frequency input,
BNC*
* See
GTR 8000 Base Radio Time and Frequency Inputs on page
NOTICE: For information about conventional functions and topologies the base radio supports,
see the Conventional Operations manual. The base radio can be IP managed while using the 2-
or 4-wire/V.24 interface for channel traffic.
3.4.8.1
System Connector Ports (Conventional)
The system connector, a 50-pin Mini SCSI connector, is used for the WildCard inputs, outputs, and the
analog audio paths not routed to their own connector.
Table 39: 50–Pin System Connector Pin-Outs (Conventional)
Pin No.
Signal
1
Aux In 2
2
Aux In 4
3*
Aux In 6
4
Aux In 8
5
Aux In 9 –
6
Aux In 10 –
7
Aux In 11 –
8
Aux In 12 –
9
Aux In 13
10
Aux Out 12
11
Aux Out 2
12
Aux Out 4
13
Aux Out 6
112
Connects to This Device/
Port
Service monitor
Type
Function
Input
Main Standby - External
handshaking
Input
Main Standby- Status of oth-
er side
Input
In-Cabinet Repeat
Input
Main Standby - Connectivity
other Station
Input
Phone Patch - PL Strip
Input
Phone Patch - Monitor
Input
Input
Input
For future use
Output
Output
Phone Patch - Rx Carrier
Output
Main Standby - Station Sta-
tus
Output
Description
trunked circuit-based site, mixed
mode, or digital only.
Connection port to service moni-
tor for frequency calibration.
157.
Note
Pull To Ground To Activate
Pull To Ground To Activate
Pull To Ground To Activate
Pull To Ground To Activate
Opto-Isolated In - Current flow to
Activate
Opto-Isolated In - Current flow to
Activate
Opto-Isolated In - Current flow to
Activate
Opto-Isolated In - Current flow to
Activate
Pull To Ground To Activate
Low Impedance to Ground When
Active
Low Impedance to Ground When
Active
Low Impedance to Ground When
Active
Low Impedance to Ground When
Active
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Troubleshooting
