Hypertherm HTA Rev 6.00 Install Guide - Manual (Page 233)

Appendix H: Sensor™ THC 221
Calibration
Series 1 Analog Card
Note: The Series 1 Analog Card will be designated as Rev 0 in the Control Information Diagnostic
screen.
Board Marking PC-012-1098 Rev. B
Part # PCBS-0010-B
After the voltage divider card and control cabling have been connected, the system is ready to be
calibrated for use.
Analog Offset: To adjust the Analog Offset, place a jumper on the Analog In signals on the Analog
input card or at the 9C connection for the Analog Input Card located at the back of the control. The
analog input voltage would then be viewed at the I/O Diagnostics screen to read any incoming
voltage for the THC. If any voltage is displayed at the diagnostic screen, an Offset Voltage equal to
the incoming voltage being read can be entered at the Password protected Analog I/O screen to
correct for any imbalance and “zero” the incoming voltage
Example: If an incoming Analog Input Voltage is reading .1 volts, simply enter .1 at the Analog Offset
and correct the imbalance.