COE Communications Engineering Document
Author:
Keith Gilbertson
Rev:
A
Date:
3/08/02
Pag
e:
18
of
33
GE
TRANSPORTATION
SYSTEMS
GLOBAL SIGNALING DIVISION
Title:
12RII FCC TECHNICAL MANUAL
6.4.7. J6 12-Pin Accessory
The 12-Pin Accessory connector is a typical option on the 12RII-LC radio. The J6 cable assembly plugs into J6 on the Radio
Control Board. The typical interface signals are shown below.
Note: As an alternate for some applications a 15 pin connector is supplied. Signal interface is identical except for pins M &
N. Speaker outputs are replaced with I/O-3 & I/O-4 signals.
J6 12-PIN ACCESSORY SIGNAL INTERFACE
J6-Pin Signal Description Mating Connector
A Mic-Audio Remote Microphone audio input RCB J6-1
B Mic-Com Remote Microphone audio return RCB J6-2
C PTT Remote PTT input RCB J6-3
D PTT Return PTT common (radio chassis). RCB J6-4
E Rec-Audio Remote low level receive audio output RCB J6-5
F +13V Out Low Power 13V Output, fuse protected RCB J6-6
H Audio Return Audio Common (radio chassis) RCB J6-7
J 13V Com Common (radio chassis) RCB J6-8
K * TX Ind. I/O 1- transmit indication output RCB J6-9
L * Standby I/O 2 - Standby indication output RCB J6-10
#M Speaker + Remote Speaker Output RCB J6-11
#N Speaker - Remote Speaker Output RCB J6-12
* I/O signals are programmable for user configurations. Signal functions are shown for reference only.
# On alternate 15 pin connector these signals are I/O-3 & I/O-4 respectively, mating to J5-1 & J5-2 on the RCB.
6.4.8. J7 Primary Control Head
J7 is installed on the standard 12RII-SR radio as the primary control head interface. The J7 cable assembly plugs into J7 on the
Radio Control Board. Interface signals are shown in the table below.
J7 19-PIN CONTROL HEAD SIGNAL INTERFACE
J7-Pin Signal Description Mating Connector
J B+ 13V output to control head, fused. RCB J7-1
M Common 13V Return RCB J7-2
U RS485-A Serial Interface, differential current loop output RCB J7-3
S RS485-B Serial Interface, differential current loop output RCB J7-4
A Mic-Audio Control Head 1 Mic audio input to radio RCB J7-5
V Rec-Audio Low level receive audio to control head 1 RCB J7-6
F I/O I/O-3 ID signal to Control Head 1 RCB J7-7
T I/O I/O-4 Master/Slave or Enable signal to Control Head 1 RCB J7-8
K Speaker + Speaker output signal to Control Head 1 RCB J7-9
L Speaker - Speaker output signal t Control Head 1 RCB J7-10
N N.C. Not Connected RCB J7-11
E Shield Serial Cable Shield (radio chassis) RCB J7-12
6.4.9. J8 Secondary Control Head
J8 is an optional connector on 12RII-LC and SR radios to add a second control head interface. The J8 cable assembly plugs
into J8 on the Radio Control Board. Interface signals are shown in the table below.
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