Adjustment Procedure
7–12
1710J-Series Waveform Monitors
Waveform Monitor
75
W
Feedthrough terminator
75
W
Terminator
Television Test Signal
Generator
Multiburst signal
Figure 7–6: Equipment setup for adjusting Channel A input compensation
3. Set multiburst generator to Sweep, High Range, Composite, Markers, and
Full Amplitude.
4. Set the 1710J-Series Waveform Monitor sweep to 2 FLD and EXT REF.
5. Adjust C195 (CH A Comp.) for flat response at 6 MHz. See Figure 7–7.
6. Check the response in the 2-4 MHz region. If it is bumped up; adjust both
L180 and L190 in a small amount (both cores should be adjusted together).
If it is dipped; adjust both L180 and L190 out a small amount (both cores
should be adjusted together).
7. Repeat steps 5 and 6 until the best response to 6 MHz is achieved. You may
need to adjust C368 (HF Comp) slightly (it affects response in the 6-8 MHz
region).
8. Disconnect the multiburst signal from the CH A input and remove the 75
W
termination from the remaining side of the loop-through connector.
9. Use a precision 50
W
cable, a 50–75
W
minimum loss attenuator, a 75
W
feed through attenuator, and the Dual Input Coupler to connect the output of
the leveled sine wave generator to the CH A and CH B inputs.
Содержание 1710J Series
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Страница 23: ...Getting Started ...
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