Input – Span Calibration

To perform a span calibration on an input, verify that the “Span” option at the left is selected.  Select the target millivolts that will be sourced.  Note – For a span calibration, it is recommended that 90 % of the full range be sourced.  The recommended millivolt source value will be displayed as well.  The mV value will be displayed on the screen under the appropriate input.  Select the input(s) to be calibrated.  Press the Calibrate button to begin the calibration.  The calibration status will be displayed on screen.  When it is over, the screen will display “Waiting to start zero/span calibration” once again.  Once the zero and span calibration have finished, a cold junction trim can be performed, if necessary.