MAINTENANCE
1735A CALIBRATION
If readjustment is required, use the following procedure. Locations of the adjustments are shown in Fig. 11.
1.Set the front panel controls of the Model 1735A as follows: Coarse and Fine VOLTAGE controls fully clockwise. Coarse and Fine CURRENT controls fully clockwise. Power switch to On.
2.Connect the Multimeter to measure the voltage at pin 7 of IC2 with respect to the front panel red (+) output jack. Adjust R21 for
3.Connect the Multimeter to measure the voltage at pin 1 of IC2 with respect to the front panel red (+) output jack. Adjust R63 for 0 + l 0 mV on the Multimeter.
4.Connect the Multimeter to measure the DC voltage between the black
5.Set the front panel Fine VOLTAGE control for a reading of 30.00 volts on the Multimeter. Adjust upper GREEN R304 for a front panel meter reading of 30.00 volts on the GREEN VOLTAGE meter.
6.Set the front panel Coarse VOLTAGE control for a reading of 04.00 to 06.00 volts on the GREEN VOLTAGE meter.
7.Connect the Multimeter to read the DC current between the black
8.Set the front panel Fine CURRENT control for a reading of 3.000 amps on the Multimeter. Adjust lower RED R304 for a front panel meter reading of 3.000 amps on the RED CURRENT meter.
INSTRUMENT REPAIR SERVICE
Because of the specialized skills and test equipment required for instrument repair and calibration, many customers prefer to rely upon B+K Precision for this service. We maintain a network of B+K Precision authorized service agencies for this purpose. To use this service, even if the instrument is no longer under warranty, follow the instructions given in the WARRANTY SERVICE INSTRUCTIONS section of this manual. There is a nominal charge for instruments out of warranty.
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