C-5
Appendix C
MINIPLEX System Components (continued)
The Remote
Interface Card
(RIC)
Remote interface cards (RICs) in the transponder cabinets allow for data, power, and audio
interconnections between the 4100 host panel and remote locations. They support RUI
connections in Style 4 and Style 7 wiring configurations.
Figure C-3 illustrates the RIC circuit board.
Figure C-3. The RIC II Card
TB2
LED1
TBL
+COMM
PRIM
+COMM
PRIM
-COMM
-COMM
+COMM
+COMM
24C
24C
PIEZO
CTRL
LED
CTRL
PTT+
PTT-
SHLD
GRN
CIM
WHT
COMMS TROUBLE LED
(LED 1):
Lights if there is a line short
on either primary or
secondary lines, or if both
comms inputs are absent.
POWER/COMM
TERMINAL BLOCK (TB1)
HEADER CONNECTOR
(J1)
SEC
+24 V
+24 V
1
PIEZO/MICROPHONE
TERMINAL BLOCK (TB2)
REMOTE MICROPHONE
CONNECTOR (P1)