eXact 100 - Bi-stable Multivibrator and Meter;Output Stage Adjustment

BI-STABLE MULTIVIBRATOR
Maximum range of the front panel VARI-
ABLE control can be set by MAX. OUTPUT R67.
For best results, turn VARIABLE control
fully clockwise and adjust R67 several de-
grees past full scale meter reading.
METER/OUTPUT STAGE
The purpose of METER BALANCE R72 is to
adjust total meter resistance for 1250
ohms, thus standardizing the output accur-
acy. This adjustment is made at the fac-
tory and the pot sealed with a drop of red
paint. READJUSTMENT OF THIS POT SHOULD NOT
BE NECESSARY IN THE FIELD. If it does Ъе-
come necessary to recompensate the meter
(indicated by a significant change in me-
ter reading when switching between 1KC and
DC OUTPUT positions), the following proce-
dure should be used:
1. Set OUTPUT to DC position.
2. Set OUTPUT/METER VOLTS switch to
100 volts.
3. Using a standard such as a FLUKE
0.05% Differential Voltmeter,
adjust VARIABLE control for 99
volts as indicated by standard.
L. Adjust METER BALANCE R72 for a
meter reading of 99 volts.
5. Switch OUTPUT from DC to 1KC
several times rapidly. Reading
should not change more than a
needle width,
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