User Manual

Table Of Contents
Backplane Connectors RF-Orchestra!™ Transmitter Installation and Operation
B-2 6880493G02-C July 2000
Connector Pinouts
The following tables provide the OCM connector pinouts (see Table B-2 through Table B-6).
Table B-1: RF-O! Transmitter Backplane Connectors
Connectors Name Description
Connectors numbered J1, 2, and 3 are internal module connections
J4 PLUG-N-PLAY Transmitter controller interface protocol standard
J5, J6 PA#1 and #2 Power amplifiers control and diagnostic SPI interface
J7, J8 PS Current Monitor
(PA#3 and PA#$)
Only used in model PT1052 (single PA) for measuring power supply
current
J9 INT WMTR Internal RF wattmeter SPI interface
J10 EXT WMTR External RF wattmeter SPI interface
J11 EXT REF 10 MHz input must meet the minimum paging station interface
protocol requirements for amplitude and frequency stability
J12 EXT_LOAD_TEMP External circulator load temperature input monitor signal
J13 SYNC PORT Factory use only
J14 LOCAL COMM Factory use only
J15 PLUG-N-PLAY
POWER
+28 V source for RF-Baton! (RF-B!) transmitter controller power as
defined by paging station interface protocol
J16 WILDCARD I/O Interfaces to external input/output circuits or module interfaces
J17 DC FAN POWER RF-O! transmitter chassis fan connection +12 V operation
J18 AUX 5 V +5 V source limited to 50 mA maximum current
J19 AUX A+ +12 V source limited to 50 mA maximum current
J20-J21 DC INPUT + 28 V input from each AC power supply
J22 DC FAN POWER RF-O! transmitter chassis fan connection +12 V operation
J23 RF OUT RF output from exciter circuits for direct connection to a single PA
deck or the RF splitter with multiple PA decks
J24 RF FEEDBACK RF input from internal RF coupler at the RF output