32 2000/3000 X-Series Oscilloscopes Service Guide
2 Testing Performance
d Press the [Acquire] key.
e Then press the Acq Mode softkey and select Averaging.
f Then press the #Avgs softkey and set it to 64.
Wait a few seconds for the measurement to settle.
4 Add a measurement for the average voltage:
a Press the [Meas] key.
b Press Source; then, turn the Entry knob (labeled on the front panel) to
select the channel you are testing.
c Press Type:; then, turn the Entry knob to select Average - Full Screen, and press
Add Measurement.
Table 9 Settings Used to Verify DC Vertical Gain Accuracy, 3000 X-Series Models
Volts/Div Setting Oscilloscope Calibrator
Setting
Test Limits
5 V/Div 35 V 34.2 V to 35.8 V
2 V/Div 14 V 13.68 V to 14.32 V
1V/Div 7V 6.84V to 7.16V
500 mV/Div 3.5 V 3.42 V to 3.58 V
200 mV/Div 1.4 V 1.368 V to 1.432 V
100 mV/Div 700 mV 684 mV to 716 mV
50 mV/Div 350 mV 342 mV to 358 mV
20 mV/Div 140 mV 136.8 mV to 143.2 mV
10 mV/Div 70 mV 68.4 mV to 71.6 mV
5mV/Div
1
35 mV 34.2 mV to 35.8 mV
2mV/Div
1, 2
14 mV 13.36 mV to 14.64 mV
1mV/Div
1, 2
7 mV 6.36 mV to 7.64 mV
1
A blocking capacitor is required at this range to reduce noise. See “Use a Blocking Capacitor to
Reduce Noise" on page 34.
2
Full scale is defined as 32 mV on the 2 mV/div range and the 1 mV/div range. Full scale on all other
ranges is defined as 8 divisions times the V/div setting.
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