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Transpector MPH Operating Manual
1.17.3  Connecting the Pirani Interlock Cable
The Pirani gauge is fully powered by the Transpector MPH Auxilliary I/O 
connection. Install the RJ-45 connection of the interlock cable into the gauge and 
connect the 15-pin D-Sub connection to the Auxilliary I/O port of Transpector MPH. 
See Figure 1-9.
Figure 1-9  Assembled interlock