User's Manual
Table Of Contents
- Title page
- Contents
- 1 General Information
- 2 Preparing the Oscilloscope for Use
- 3 Testing Performance
- List of Test Equipment
- To construct the test connector
- To test the 54621D/22D Oscilloscope digital channels
- To verify digital channel threshold accuracy
- To verify voltage measurement accuracy
- To verify bandwidth
- To verify horizontal Dt and 1/Dt accuracy
- To verify trigger sensitivity
- Agilent 54622A/22D/24A Performance Test Record
- Agilent 54621A/21D Performance Test Record
- 4 Calibrating and Adjusting
- 5 Troubleshooting
- 6 Replacing Assemblies
- 7 Replaceable Parts
- Declaration of Conformity
- Notices
3-10
Testing Performance
To verify voltage measurement accuracy
To verify voltage measurement accuracy
This test verifies the voltage measurement accuracy. In this test, you will
measure the output of a power supply using dual cursors on the oscilloscope,
and compare the results with the multimeter reading.
Test limits: ±2.0% 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 3-4
Equipment Required to Verify Voltage Measurement Accuracy
Do this procedure first for Channel 1. Then repeat the procedure for Channel 2.
1
Set up the oscilloscope.
a Adjust the channel 1 position knob to place the baseline at approximately
0.5 division from the bottom of the display.
Equipment Critical Specifications Recommended Model/Part
Power supply 14 mV to 35 Vdc,
0.1 mV resolution
Fluke 5820A or Agilent 3245A
Digital multimeter Better than 0.01% accuracy Agilent 34401A
Cable BNC, Qty 2 Agilent 10503A
Shorting cap BNC Agilent 1250-0774
Adapter BNC (f) to banana (m) Agilent 1251-2277
Adapter BNC tee (m) (f) (f) Agilent 1250-0781
Blocking capacitor Agilent 10240B
service.book Page 10 Wednesday, December 18, 2002 8:35 AM