Martel Electronics 235 - Manual (Page 13)

CE/ZERO Key
When the calibrator is in the output mode and you press any of the
numeric keys (0-9), the keystrokes will be displayed until you press ENT
and the value is accepted by the output function. If you make a keying
error, the CE key is used to clear the erroneous entry and allow the
correct value to be re-entered. If you press CE a second time before
entering any numeric data, the keypad display mode is canceled and
the calibrator returns to displaying the actual output simulation value.
When the calibrator is in the input mode the CE/ZERO key acts as a zero
adjustment. This is used mostly on functions such as 2-wire ohms and
when using the external pressure module, but can be used on any Input
function. When the key is pressed, the most recent reading is retained
as the “zero point” and all subsequent readings have the zero point
subtracted from them prior to being displayed.
When the calibrator is displaying a menu, the CE/ZERO key acts as a
CANCEL key to terminate the menu and return to the previous function
or the idle state.
Auto Key
The AUTO key is used in conjunction with the calibration points or
Ramp functions to automatically repeat the function. The time
interval between the automatic repeats is determined by Setup option
“Pause.” The time can range from 5 to 10,000 seconds. The Model 235
uses the AUTO key with the “System” function.
The operation of the AUTO key is covered in detail with the Calibration
Points and Ramp functions.
Operation
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