Service manual

5
Adjustments
Introduction This chapter contains procedures to adjust the Agilent E1326B
multimeter for peak performance. For best performance, the
instrument should be adjusted after repair. All adjustments are
performed electrically, so manual adjustment of the multimeter is not
necessary.
WARNING
Do not perform any of the following adjustments unless you are
a qualified, service-trained person, and have read the
WARNINGS and CAUTIONS in Chapter 1.
NOTE
ALL adjustment procedures MUST be performed in the order shown in
this manual (DC Voltage, then AC Voltage, and then Resistance).
Adjustment
Conditions/
Procedures
For valid adjustments, the Agilent E1326B multimeter and test
equipment used must have at least a 60 minute warm-up, and the line
voltage must be 115/230 Vac ± 10%. For best accuracy, the temperature
of the area where adjustments are made should be between 18
o
C and
28
o
C and stable to within ± 1
o
C. See Table 1-1, Recommended Test
Equipment, for test equipment requirements.
The adjustment procedures assume the person performing the
adjustments understands how to operate the mainframe, multimeter and
specified test equipment. The adjustment procedures do not specify test
equipment settings, except in general terms. It is assumed a qualified,
service-trained person will select and connect the cables and jumpers
required for the adjustments.
Adjustments 5-1