ADA400A Differential Preamplifier
Table 16: Equipment Settings for X10, 10 kHz CMRR Checks
ADA400A
Upper Bandwidth
Oscilloscope
Vertical gain
Time base
Sine Wave Generator
Output
26. Set '- -' input to GND.
27. Do steps 5 to 10 but with only one 10X attenuator.
28. Set oscilloscope to 100 V/div. Measure trace is < 0.56 division wide
(56 V, 85 dB).
29. Modify the equipment settings according to Table 17.
Table 17: Equipment Settings for X10, 100 Hz CMRR Checks
ADA400A
Upper Bandwidth
Oscilloscope
Vertical gain
Time base
Sine Wave Generator
Output
30. Set '- -' input to GND.
31. Do steps 5 to 10 but with only one 10X attenuator.
32. Set oscilloscope to 100 V/div. Measure trace is < 0.56 division wide
(56 V, 85 dB).
33. Disconnect setup.
This completes the performance verification procedure.
Performance Verification
Setting
100 kHz
Setting
20 mV/div
50 s/div
Setting
10 kHz
Setting
3 kHz
Setting
20 mV/div
5 ms/div
Setting
100 Hz
37
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