4–3
Transpector CPM Operating Manual
4.3.1.1 CPM Aux I/O Connector
User I/O is through a 15 pin DSUB connector on the cable box attached to the back
of the Transpector electronics module. (See Figure 2-8 on page 2-10.)
A mating DB15 Male connector is supplied in the ship kit for connecting to the
Transpector CPM Aux I/O connections.
4.3.1.2 Two Digital Inputs
Logic Inputs 1 and 2 are by default set to remotely control emission status.
(See Table 4-1.)
Connecting Pin 14 (Logic Input 1) to Pin 15 (Ground) will turn on the emission.
Connecting Pin 13 (Logic Input 2) to Pin 15 (Ground) will turn off the emission.
Controlling emission through digital inputs bypasses all
software and hardware interlocks. When using digital
inputs for controlling Transpector CPM emission,
develop an interlock that will not allow the emission to
turn on if the pressure is too high for operation of
Transpector CPM.
4.3.1.3 One Status Relay Output
One status relay output is active (closed) when the emission is on.
See Table 4-2.
NOTE: The status relay is not available when HPR or calibration reference options
are selected.
Table 4-1 Digital inputs
Emission ON PIN 14
Emission OFF PIN 13
Ground PIN 15
Table 4-2 Status relay output
EMISSION ON Relay closed. PIN 2 and PIN 1 connected
EMISSION OFF Relay open
CONTACT RATING 24 V(dc) at 0.5 A
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