Fluke ScopeMeter 190 Series III, Service Manual

Page: 33 / 70

ScopeMeter® Test Tool
Performance Verification
29
Meter Tests
Note
The following tests are for the models 190-062, 190-102, 190-202, 190M-2, and
190-502.
Meter DC Voltage Accuracy Test
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 test the meter dc voltage measurement accuracy:
1. Connect the Test Tool to the 5502A. See
Figure 10 .
2. Select the Test Tool setup.
3. Press
M
.
4. Press
1
to open the Measurement menu and select V dc.
5. Press
E
.
6. Press
J
to select MANUAL ranging. Use
j
and
k
to select the ranges.
7. Set the range to the first test point in Table 11 .
8. Set the 5502A to source the appropriate dc voltage. Observe the reading and check to see
if it is within the range shown under the appropriate column.
9. Continue through the test points.
When you are finished, set the 5502A to 0 (zero) Volt and Standby.
Table 11. Meter Volts dc Measurement Verification Points
Range 5502A Output V DC Meter Reading
500.0 mV
+500 mV 497.0 to 503.0
-500.0 mV -497.0 to -503.0
0 mV -0.5 to +0.5
5.000 V
+5.000 V 4.970 to 5.030
-5.000 V -4.970 to -5.030
50.00 V
+50.00 V 49.70 to 50.30
-50.00 V -49.70 to -50.30
500.0 V
+500.0 V 497.0 to 503.0
-500.0 V -497.0 to -503.0
1100 V
+1000 V 0.990 to 1.010
-1000 V -0.990 to -1.010