DMM800 Series Adjustment Procedures
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Handheld and Benchtop Instruments Basic Service
Adjustment Procedures
This section contains procedures to adjust DMM830, DMM850, and DMM870
multimeters. Perform these procedures once a year or if the Performance
Verification procedure indicates the need for calibration.
In this section you will find the following information:
 A list of adjustments
 A list of test equipment needed to make the adjustments
 Instructions on how to prepare the instrument for adjustment
 Step-by-step adjustment procedures
The procedures in this section do not verify performance. To confirm that your
multimeter meets factory specifications, perform the procedures in the Perfor-
mance Verification section.
List of Adjustments
Use the adjustments listed in Table 9 to return DMM800 Series multimeters to
factory calibration.
Table 9: DMM800 Series Adjustments 
Adjustments Part 1
DC Volts
AC Volts
Capacitance
Temperature (DMM850 and DMM870)
DC Milliamperes
DC Amperes
Adjustments Part 2
AC Response