Performance Ver
ification
Check DC Gain Accuracy
This test checks the DC gain accuracy.
1. Connect the oscilloscope to a DC voltage source. If u sing the Fluke 9500 calibrator, connect the calibrator head to
the oscilloscope channel to test.
2. Push Default Setup on the front panel to set the instrument to the factory default settings.
3. Push channel button 1, 2,3,or4 to select the channel that you want to check.
4. Confirm that the oscilloscope termination and calibrator impedance are both set to 1 M. On the oscilloscope, push
Te rm ination on the lower menu to select 1MΩ.
5. Push 20 MHz on the side menu to select the bandwidth (push Bandwidth on the lower menu, if necessary, to activate
the B and
width menu).
6. Push Ac
quire on the front panel.
7. Push Mo
de on the lower menu, and then push Average on the side menu. Use the default number of averages (16).
8. On the f
ront panel, push the Measure button on the Wave Inspector, and then Add Measurement on the lower menu.
9. Use Mul
tipurpose knob “b” to select the Mean measurement. Use Multipurpose knob “a” to se lect the input
channel to be tested.
10. Push OK Add Measurement on the side menu.
11. Push the Trigger Menu button on the front panel.
12. Push Source on the lower menu.
13. Turn Multipurpose knob “ a” to select AC Line as the trigger source. Push Menu Off on the front panel.
14. Turn the vertical Scale knob to the next setting to measure, as shown in the Gain Expected worksheet below.
15. S et the DC Voltage Source to V
negative
.PushMeasure on the front panel, then push Mo re on the lower menu to select
Statistics. Push Reset Statistics on the side menu, and then push Menu Off on the front panel.
16. E nter the mean reading into Gain Expected worksheet below as V
negative-measured
.
17. S et the DC Voltage Source to V
positive
.PushMore on the lower menu to select Statistics, push the Reset Statistics
on
the side menu, and then push Menu Off on the front panel. Enter the mean reading into the Gain Expected
worksheet as V
positive-measured
.
MDO3000 Series S pecifications and Performance Verification 79
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