Fluke 190-104 - Input A, B, C, D DC Voltage Accuracy Test

Fluke 190-104/190-204
Service Information
4-8
Table 4-1. Vertical Accuracy Verification Points
Range Initial 5500A Setting,
V ac, sine, 50 Hz
Allowable 5500A output for trace amplitude of
6 divisions
2 mV/div 4.243 mV 3.951 to 4.517
5 mV/div 10.606 mV 10.183 to 11.028
10 mV/div 21.213 mV 20.368 to 22.058
20 mV/div 42.426 mV 40.735 to 44.117
50 mV/div 106.06 mV 101.83 to 110.28
100 mV/div 212.13 mV 203.67 to 220.58
200 mV/div 424.26 mV 407.35 to 441.16
500 mV/div 1.0607 V 1.0184 to 1.1030
1 V/div 2.1213 V 2.0367 to 2.2058
2 V/div 4.2426 V 4.0735 to 4.4117
5 V/div 10.606 V 10.183 to 11.028
10 V/div 21.213 V 20.368 to 22.058
20 V/div 42.426 V 40.735 to 44.117
50 V/div 106.06 V 101.83 to 110.29
100 V/div 212.13 V 203.67 to 220.58
Note
The vertical accuracy test can also be done with dc voltage. This method is
advised for automatic verification using the Fluke Met/Cal Metrology
Software. For each sensitivity range you must proceed as follows:
1. Apply a +3 divisions voltage, and adjust the voltage until the trace is at
+3 divisions. Write down the applied voltage V1
2. Apply a -3 divisions voltage, and adjust the voltage until the trace is at
-3 divisions. Write down the applied voltage V2
3. Verify that V1-V2 = 6 x range
± (2.1% + 0.04 x range).:
Example for range 10 mV/div. (range/div figure doubles because 2
measurements V1 and V2 are done for one accuracy check):
The allowed V1 - V2 = 60 mV
± (0.021 x 60 + 0.08 x 10)
= 60 mV
± (1.26 + 0.8) = 60 mV ± 2.06 mV
4.6.2 Input A, B, C, D DC Voltage Accuracy Test
WARNING
Dangerous voltages will be present on the calibration source
and connecting cables during the following steps. Ensure that
the calibrator is in standby mode before making any connection
between the calibrator and the Test Tool.
Proceed as follows to verify the automatic dc voltage scope measurement: