Arbiter Systems 1040C Training Manual page 16

Normal/Deviation
In the % deviation mode the PMC computes and displays the output value according to the
formula:
PMC Display Value = (METER C.P. - PMC output value) X 100 %
METER F.S.
The PMC must have both the meter full scale value (Meter F.S.) and the meter calibration
point (Meter C.P.) to perform the necessary calculation.
To enable this function, press %DEV and set the PMC output value to the meter's full scale
value (it is not necessary to press OPER) . The display will read METER F.S. = XXXXX
YY where XXXXX YY represents the meter's full scale value and units.
Press %DEV again and the display will change to METER C.P. = XXXXX YY. Enter
the meter calibration point by using the keypad or RECALLing a stored setting. Do not
use the Modify Controls.
Press the %DEV key again to display METER = 00.00%. The PMC now displays the
deviation from the selected calibration point in percent of meter full scale. The previous
displays can be reviewed and/or changed by pressing the %DEV key.
Repeatedly press the % DEV key until the METER = XX.XX% is displayed again. Press
OPER to intitiate the output. Use the rotary knob or the modify keys to change the output
level and the % deviation displayed. Do not enter a value from the keypad or use the
RECALL feature. A new full scale or calibration point must be entered using the keypad
or RECALL feature. Changing the full scale or calibration point resets the percent
deviation to zero.
Memory
The Memory feature is useful for storing frequently used output settings and quickly
recalling them later. An output setting can be entered into the memory by simply pressing
the STORE key. Illumination of the STORE LED indicates that stored values are present.
Up to 99 settings can be stored. The display will flash memory store # after each entry and
will continue to flash on and off if all of the memory locations have been filled.
Output settings in memory are recalled by pressing the RECALL key. The memory
operates on a first in, first out (FIFO) basis. This sequence will continue whereby the first
setting stored will also follow the last when recalling through all of the stored settings.
Pressing the CLEAR key clears all memory settings.
The keypad may be used to help move through the stored settings. Pressing 0 then
RECALL recalls the first stored setting. Entering a number other than zero and pressing
RECALL recalls the output setting at that location.
Calibration
External Adjustments
This section consists of test procedures that check the PMC's output amplitude and phase.
If a discrepancy with the specified tolerances is encountered, modifications are made to the
stored calibration constants.
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