5522A
Operators Manual
4-56
specifications. The second is the calibration procedure for the 80 Series meters. The
80 Series Service Manual gives instructions for disassembly and access to the pca
(printed circuit assembly). You will need to access the pca for the calibration procedure.
Before connecting the calibrator to the 80 Series DMM, you need to determine what type
of cables to use and whether to use Z or not. This decision-making process is covered
next.
Cables
Fluke 5440A-7002 Low-Thermal Cables are recommended for many calibrations
connections, but they are not specifically required for 80 Series calibration. Thermal emf
errors that the Low-Thermal cables are designed to reduce are not significant when
calibrating a 3-1/2 digit meter. The cables support the following measurements:
• AC and dc voltages
• All resistances
• AC and dc currents up to 20 A
EARTH Connection
Because the 80 Series DMMs are battery operated, their inputs have no connection to
earth ground. Therefore, enabling the calibrator’s earth (chassis) ground to guard and LO
is appropriate. connection is appropriate. (Press the Z key so that the indicator is lit,
and make sure the B indicator is off.)
How to Test the Meter
You can use the error mode feature of the calibrator to test the meter. To verify that all
ranges of all functions are within specifications, proceed as follows:
1. Turn on the calibrator and allow it to warm up.
Warning
To prevent electric shock, fire, or personal injury, ensure the
product is in standby mode before making any connection
between the product and tester.
2. Verify that the calibrator is in standby and connect the DMM as shown in
Figure 4-18.
5522A
CALIBRATOR
87
TRUE RMS MULTIMETER
MIN MAX
RANGE HOLD
H
REL Hz
mA
A
A
m
mV
V
V
OFF
PEAK MIN MAX
A
COM
V
mA A
gjh025.eps
Figure 4-18. Cable Connections for Testing an 80 Series General Functions
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