Tektronix ADA400A Instruction Manual page 44

Performance Verification
32
Table 10: Equipment Settings for Gain Checks (Cont.)
ADA400A Control
Offset
Oscilloscope Control
Channel Selection
Vertical input impedance
Vertical gain
Time base
Vertical Coupling
Vertical Position
Trigger
Trigger position
Trigger source
Acquisition mode
Auto Measurement
Bandwidth
Calibration Generator Control
Output
2. Connect a dual input connector to inputs of ADA400A.
3. Connect a coaxial cable from calibration generator output to dual input
connector.
4. Adjust vertical position knob on the oscilloscope to center square wave on
screen.
5. Check DC gain accuracy is ± 2% (49 to 51 mV). (Use amplitude measure-
ment function.)
6. Set ADA400A gain setting to 10.
7. Set calibration generator to 0.5 V amplitude.
8. Adjust vertical position knob on oscilloscope to center square wave on
screen.
9. Check DC gain accuracy is ± 2% (490 mV to 510 mV).
10. Set ADA400A gain setting to 1.
11. Set calibration generator to 5 V amplitude.
Setting
Off
Setting
Ch1
1 MΩ
10 mV/div
200 s/div
DC
0 V (mid-scale)
Edge
50%
Ch4
Hi Res
Amplitude
Full
Setting
50 mV, 1 kHz
ADA400A Differential Preamplifier