CTI Products CIB Comparator Interface - Manual (Page 32)

CIB Hardware Reference Comparator Wiring Lists
CTI Products, Inc.
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7.4.1 Voter Modifications For Receiver Module Fail Monitoring
There is no isolated Fail signal brought out on the G.E. receiver module. The Fail
signal on all modules are bussed together to provide a single Fail signal on the
voter backplane. A field modification is required to bring out an isolated Fail line
for each of the receiver modules. There are two ways to modify the voter to
provide the isolated Fail signals: the Backplane modification and the Receiver
Module modification.
7.4.1.1 Backplane Modification
The backplane modification is the easiest modification. It will work with either
the old or new style receiver mosules. If you do not have a need for a common
Fail output, you can cut the trace that ties together all the Fail/Alarm outputs on
the receiver modules.
To do this, use a Dremel Tool or an Exacto knife to cut the trace on the backplane
between pins 5/E on all the receiver modules. Connect the Fail line from the CIIB
to pin 5/E on each module by soldering it to the backplane
7.4.1.2 Receiver Module Modification
If you do need a common Fail/Alarm line, and you want to display the Fail
indication through the CIB module, you will have to modify each receiver
module. The S3-60355 GE Receiver Module Fail Line Kit includes a diode and
wires that are used to bring out the individual Fail line. Install one modification
kit for each receiver module.
Modification for Old Style Receiver Modules
The old receiver modules (19D413994G1) are transistorized and don’t have ICs.
Add a modification kit on each receiver module. Connect the black wire
(cathode) to the collector of Q40. Connect the red wire (anode) to pin 19 of the
edge connector. This may be done on the solder side of the board. Please note
that the wires on the diodes in the modification kit are furnished long because the
kit is intended for use with 2 types of modules. Cut each of the wires to the
proper length for a neat installation.
Modification for New Style Receiver Modules
The new receiver modules (19D903175G1) use ICs. Add a modification kit on
each receiver module. Connect the black wire (cathode) to the cathode of DS1
(collector of Q7). Connect the red wire (anode) to pin 19 of the edge connector.
This may be done on the solder side of the board. Please note that the wires on
the diodes in the modification kit are furnished long because the kit is intended for
use with 2 types of modules. Cut each of the wires to the proper length for a neat
installation.