HP 54645A, User'S And Service Manual

Page: 205 / 301

To verify voltage measurement accuracy
In this test, you verify the voltage measurement accuracy by measuring the
output of a power supply using dual cursors on the oscilloscope, and
comparing the results with a multimeter.
Test limits:
±
1.5% of full scale
±
1 LSB*
Full scale is defined as 16 mV on the 1 mV/div range. Full scale on all
other ranges is defined as 8 divisions times the V/div setting.
* 1 LSB = 0.4% of full scale
Table 7-5 Equipment Required
Equipment Critical specifications Recommended
Model/Part
Power supply 14 mV to 35 Vdc, 0.1 mV resolution HP 6114A
Digital multimeter Better than 0.01% accuracy HP 34401A
Cable BNC, Qty 2 HP 10503A
Shorting cap BNC HP 1250-0774
Adapter BNC (f) to banana (m) HP 1251-2277
Adapter BNC tee (m) (f) (f) HP 1250-0781
Testing, Adjusting, and Troubleshooting
To verify voltage measurement accuracy
7-16