Fluke ScopeMeter 190 Series III, Service Manual

Page: 51 / 70

ScopeMeter® Test Tool
Calibration Adjustment
47
DMM Calibration
The adjustment steps for the meter section are only for the models 190-062, 190-102, and
190-202, 190M-2. For 4-channel tools, go to Save Calibration Data and Exit .
Multimeter Meter Zero
To do the Multimeter (DMM) Zero calibration:
1. Press
2
to select calibration adjustment step CL 0890 .
2. Short circuit (interconnect) the banana jack Meter inputs. Use a test lead as short as
possible.
3. Press
3
to start the zero calibration.
Wait until the display shows the status CL 0906: READY .
4. Remove the input terminations.
Continue at the
Multimeter Volt Gain section.
Multimeter Volt Gain
XW
Warning
To prevent possible electrical shock, fire, or personal injury, make sure that the
calibrator is in standby mode before making any connection between the
calibrator and the Test Tool. Dangerous voltages are present on the calibration
source and connection cables during these steps.
To do the DMM Volt Gain calibration:
1. Press
2
to select the CL 0840 calibration step in Table 14 , Multimeter Volt Gain .
2. Connect the Test Tool to the 5502A. See Figure 19 .
Figure 19. 5502A Normal Output to Test Tool Banana Input
NORMAL SCOPE
FLUKE 5502A CALIBRATOR
A B METER
2 CHAN. + METER
USE STACKABLE TEST LEADS
AS SUPPLIED WITH CALIBRATOR