CTI Products MCN RCD System Overview - Manual (Page 20)

MCN System Manual System Operation
CTI Products, Inc.
68-10833-120
16
CA-80049-100
+V
+V
MOMENTARY
+V
+V
LATCHING
CONSOLE ELECTRONICS IIB J1
VOTE
FAIL
RX
DISABLE
Figure 4 - Console Electronics Interface
When the DISABLE button on the console is pressed, the DISABLE LED on the
console will immediately turn on and stay on after the DISABLE button is
released since it is a latching button. The IIB will send the DISABLE information
to the Comparator I/O Module so that the comparator will disable the receiver. If
the DISABLE does not occur (the MCN network is not connected or the receiver
is Force Voted so the comparator ignores the DISABLE), the operator at the
console may not know it because the console’s DISABLE LED is on.
The hardware reference manual of the CIB and IIB indicate which I/O lines are bi-
directional and when this type of a problem will occur.
6.2 Receiver Banks
The CIB parallel Comparator Interface Module controls and monitors 8 receivers.
The AIB supports up to 13 receivers when configured for an ASTRO-TAC™
Comparator or up to 64 receivers when configured for an ASTRO-TAC™ 3000
Comparator.