Tektronix TDS6404, Руководство по обслуживанию

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Performance Tests
4- 44
TDS6000 Series Service Manual
H
Set the trigger as follows:
TDS6604: Touch the Source Line button.
TDS6404: Press the front-panel PUSH TO SET 50% as necessary
to trigger a stable display. At full bandwidth, you may also want to
make small, manual adjustments to the trigger level. You can use the
Trigger LEVEL knob to do this.
f. Measure the test signal:
H
Set the frequency of the generator, as shown on screen, to the test
frequency in Table 4--5 that corresponds to the vertical scale set in
substep c. See Figure 4--15.
H
Set the horizontal SCALE to the horizontal scale setting in
Table 4--5 that corresponds to the vertical scale set in substep c.
Press
PUSH TO SET 50% as necessary to trigger the signal.
H
Read the results at the CHx Pk-Pk readout, which will automatically
measure the amplitude of the test signal. See Figure 4--15.
Set the generator
(reference) frequency to
the test frequency from
Table 4--5.
1
Set the horizontal scale
from Table 4--5.
2
Read results.
3
Figure 4- 15: Measurement of analog bandwidth
g.
Check against limits:
H
CHECK that the Pk-Pk readout on screen is within the limits listed
in Table 4--5 for the current vertical scale setting .
H
Enter voltage on the test record.
H
When finished checking, set the horizontal SCALE back to the
40 ns setting.