Tektronix TEKFAX ADA400A, Инструкция по эксплуатации

Страница: 44 / 80

Performance Verification
32
ADA400A Differential Preamplifier
Table 10: Equipment Settings for Gain Checks (Cont.)
ADA400A Control Setting
Offset Off
Oscilloscope Control Setting
Channel Selection Ch1
Vertical input impedance
1
M
Ω
Vertical gain 10 mV/div
Time base 200 s/div
Vertical Coupling DC
Vertical Position 0 V (mid-scale)
Trigger Edge
Trigger position 50%
Trigger source Ch4
Acquisition mode Hi Res
Auto Measurement Amplitude
Bandwidth Full
Calibration Generator Control Setting
Output 50 mV, 1 kHz
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.