GAI-Tronics L3149B C200 Advanced Deskset - Manual (Page 37)

L3149B (C200) Advanced Tone Remote Desk Set Installation
31
Line Connections for Local Control (L3147A) Operation
When programmed for local operation (L3147A) the desk set provides extended local control of the
radio. This operation requires PTT and monitor to be connected to J701 of the relay module in the base
of the desk set as noted in the chart below. Additionally, if parallel L3149B Desk Sets (in local control
mode) are to be used, the connection of PTT Sense and Monitor Sense allows proper operation of the
system. If a CDM1550 LS Mobile Radio is used, the clear-to-send of the radio must be connected to the
clear-to-send input that has been configured with the programming software.
The table below shows the connections that must be made between the L3149B relay module and the
radio. The items in bold are pertinent connections. Also note that the radio must provide the appropriate
pull-up (>= 47 kilohms) for proper operation.
J701 Pin Description Connect To:
1 Programmable Input CTS input (CDM1550 LS LTR Support)
2 Ground Return Radio Ground (same as pin 24)
3 Monitor Sense Input Pin 13 if parallel units used
4 PTT Sense Input Pin 16 if parallel units used
5 Programmable Input CTS input (CDM1550 LS LTR Support)
6 Relay 4-1 N/C Contact
7 Relay 4-1 Common
8 Relay 4-1 N/O Contact
9 Relay 4-2 N/C Contact
10 Relay 4-2 Common
11 Relay 4-2 N/O Contact
12 Relay 3 N/C Contact
13 Monitor Output Radio Monitor Input
14 Relay 3 N/O Contact Pin 2 or 24
15 Relay 2 N/C Contact
16 PTT Output Radio PTT Input
17 Relay 2 N/O Contact Pin 2 or 24
18 Relay 1-1 N/C Contact
19 Relay 1-1 Common
20 Relay 1-1 N/O Contact
21 Relay 1-2 N/C Contact
22 Relay 1-2 Common
23 Relay 1-2 N/O Contact
24 Ground Return Radio Ground (same as pin 2)