Martel Electronics 135 - Manual (Page 31)

The input functions will return to displaying in engineering when the
next input function is selected.
Damp (Dampen input readings)
This feature allows noisy input signals to be electronically dampened
for easier reading. When the feature is enabled, a running average is
displayed, rather than the instantaneous value.
Select either Enable or Disable using the INC/DEC keys and press the
ENT key.
% Error Display
This option allows the user to configure the active input and output
function so the calibrator can internally compare them and display the
% error. For example, assume a 4-20mA calibrator output and 1-5 volt
calibrator input. If 4mA is being generated, 0% of scale will be
indicated on the right side of the display and if 1 volt is being received,
0% error will be displayed on the left.
Again assume, for the same signals, a 20mA calibrator output and a 5
volt input.
This feature is particularly handy when using the pressure modules
because exact pressure need not be achieved or held. Even if the
pressure input is changing, the display will indicate any error between
input and output. For example, assume the calibration of a 0-1500 PSI
P/I transmitter.
Operation
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Input Dampening
Disable Enable
% error % scale
+0.00% +0.00%
% error % scale
+0.00% +100.00%