Entering Calibration Mode - Arbiter Systems 1040C Training Manual

Entering Calibration Mode

To access the calibrate mode, the operator must know the Key Code for the particular
instrument. The Key Code is set to the instrument's serial number when shipped from the
factory. Access the calibrate mode in the following manner:
1. With the PMC in the reset mode, press and hold the MODIFY UP arrow key. Press
RESET. The display will show: ENTER KEY #0000.
2. Use the numeric keypad to enter the Key Code and press ENTER.
NOTE: If an incorrect Key Code is entered the PMC will revert to Reset.
3. Once the correct Key Code is entered, the display will change to CHANGE KEY #
XXXX. The key Code may now be modified.
CAUTION: Ensure to properly record the Key Code if modified and restored.
4. Press ENTER for calibrate mode operation signified by a circle with a cross character
in the right-hand portion of the display.
Typical Calibrate Routine
1. Enter Calibrate Routine as previously described.
2. Set the PMC for operation in desired mode and range using the top of the range value.
As an example, use the following sequential steps to test the top of the 100-volt DC
range:
a. Press DC.
b. Press VOLTAGE.
c. On the numeric keypad, enter 100.
d. Press V.
e. Press OPER.
f. Allow the output to settle and perform measurement.
3. The top of range calibration constant and the output level can now be modified by
entering a number on the numeric keypad and pressing ENTER. During amplitude
alignment the calibration constant and the output level will change approximately
0.01% times the number entered. For phase corrections the factor is 0.01°. Adjustments
to calibration constants may be made at the top of range and 1/10 settings only.
4. The 1/10, 1/4, 1/2, 3/4, and top of range outputs are programmed and available by
pressing the Clear Key. The PMC will not revert to Standby when CLEAR is pressed,
but the output will change to the newly displayed value.
5. To adjust Voltage or Current during Power, setup Power using the normal sequence,
e.g., 60 Hz, POWER, VOLTAGE, 150V, CURRENT, and 1A. Then select either
VOLTAGE or CURRENT to monitor. The Clear Key will cycle the setting selected.
6. While most functions operate in their normal fashion in calibrate mode, several
characteristics are worth noting: Frequency and phase are not adjustable; only 60 / 400
Hz are available and the phase is set to 30°.
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