Kyle R., Arnab D., Rakesh K. 

Today we adjusted the "ATM" potentiometer on the new parani gauge (local electronics unit) but could only achieve a minimum value of 906 torr indication on CDS.  This is too high.  The actual pressure under these conditions is closer to 760 - 790 torr -> The measured voltage supplied to the gauge electronics is 24.5 VDC and the output signal from the sensor electronics, 5.6 VDC, which is consistent with the CDS-converted value of 906 torr.  Any voltage drops across signal wiring connections between the gauge and the CDS rack should result in a CDS value which would be biased to less than the actual value, not more than the actual value.  

We will continue troubleshooting at the next opportunity.