Adjustment Procedures
5-20
TDS 420A, TDS 430A & TDS 460A Service Manual
5ns
C1
20 ns
R1
10 ns
R2
1. Adjust R1 for best overall match.
2. Adjust R2 and C1 for best match between
front corners.
3. Repeat the first two steps as needed due
to interaction between adjustments.
5ns
C1
20 ns
R1
10 ns
R2
Positive Pulse
Negative Pulse
Figure 5- 10: Adjustments vs. Front-Corner Response
3.
Disconnect the hookup: Unplug the probe from the BNC to probe tip
adapter. Reverse the instructions in Figure 5--4, page 5--13, to reinstall the
retractable probe tip.
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