HP 54645A, Руководство пользователя и сервисное руководство

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To verify vertical output on Option 005
This section applies only to the Option 005 Enhanced TV/Video Trigger.
In this test, we will use the oscilloscope’s channel 2 to measure the amplitude
of the vertical output signal.
Test limits: approximately 90 mV
p-p
into 50
Ω
with a full-screen input.
Table 7-10 Equipment Required
Equipment Critical Specifications Recommended Model/Part
Signal generator 1 to 500 MHz at 200 mV
(only 100 MHz needed) HP 8656B opt 001
Cable BNC, 48-inch HP 10503A
Cable Type N (m), 24-inch HP 11500B
Adapter Type N (m) to BNC (f) HP 1251-0780
Feedthrough 50
Ω
, BNC (m) and (f) HP 10100C
1
Connect the signal generator to the channel 1 input of the
oscilloscope.
2
Set the signal generator to equal the full bandwidth of your
oscilloscope, and set the output level to 0 dBm.
3
Connect the signal generator to the oscilloscope’s channel 1. Use a
50
−Ω
feedthrough to correctly terminate the signal generator.
4
Press
Autoscale
.
5
Adjust the oscilloscope controls and signal generator to obtain an
8-division-high display.
6
Connect the vertical output to channel 2. Use a 50
−Ω
feedthrough.
7
Measure the peak-to-peak amplitude of channel 2. It should be
greater than or equal to 63.6 mV
p-p
.
Because the measurement is being made at the full bandwidth of the
oscilloscope’s channel, the peak-to-peak measurement is corrected for the
oscilloscope’s high-frequency rolloff.
Testing, Adjusting, and Troubleshooting
To verify vertical output on Option 005
7-27