CAUTION
The following procedure should be performed by persons trained and
qualified in electronics and electronic equipment service. DO NOT
attempt this procedure if not qualified.
WARNING
Do not attempt calibration or service unless another person, capable of
rendering first aid and resuscitation is present.
Sec. 11.1
CALIBRATION PROCEDURE
The procedure should be performed at an ambient temperature of
25°C ± 2°C and at a relative humidity of less than 80%. Allow the
instrument to stabilize at this temperature for a minimum of 30 min-
utes.
1. Remove the back case screw and carefully pry up the back
case.
2. Set the range switch to the "200mVdc" position.
3. Set the output of the DC calibrator for 190.0mV ± 0.02% and
connect it to the "V-Ω" and "COM" input terminals.
4. Adjust R47 until the display reads 190.0mV ± 1 digit.
16
Fig. 4
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