Tektronix ADA400A Instruction Manual page 42

Performance Verification
Table 10: Equipment Settings for X100, 100 kHz CMRR Checks (Cont.)
Sine Wave Generator Setting
Output 100 kHz, 1 Vp-p into 50 Q
2. Connect a coaxial cable from sine wave generator trigger output to Ch4 of
e s e a a A R
10.
i.
12.
13.
Connect dual input connector to inputs of ADA4O0A.
Connect 50 @ terminator to dual input connector.
Connect two 10X attenuators to 50 Q terminator.
Connect a coaxial cable from sine wave generator output to 10X attenuators.
Adjust trigger level for a steady display.
Adjust the amplitude of the sine wave generator for 5 divisions on screen.
Remove the two 10X attenuators and connect the cable directly to the 50 Q
Set oscilloscope to 1 mV/div,
Measure signal is < 1 division (1 mV, 60 dB).
Modify the equipment settings according to Table 11.
Table 11: Equipment Settings for X100, 10 kHz CMRR Checks
ADA400A Setting
Upper Bandwidth 100 kHz
Oscilloscope Setting
Vertical gain 2 mVidiv
Time base 50 us/div
Sine Wave Generator Setting
Output 10 kHz
14. Set '~' input to GND.
15,
16.
Set oscilloscope to 10 V/div. Measure trace is < 3.2 divisions wide (32 uV,
90 dB).
ADA4OOA Instruction Manual