Agilent Technologies 54657A Specifikace Strana 105

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To verify horizontal t and 1/t accuracy
In this test you verify the horizontal t and 1/t accuracy by measuring the
output of a time mark generator with the oscilloscope.
Test limits: ±0.005% ±0.2% of full scale ±100 ps (same channel)
Table 4-6
Equipment Required
Equipment Critical specifications Recommended Model/Part
Time marker generator Stability 5 ppm after 1/2 hour TG 501A and TM 503B
Cable BNC, 3 feet Agilent 10503A
1 Connect the time mark generator to channel 1. Then, set the time
mark generator for 0.1 ms markers.
2 Setup the oscilloscope.
a Press Setup , then press the Default Setup softkey.
b Press 1
, then toggle Input softkey to 50 .
c Press Autoscale .
d
Set the time base to 20 µs/div.
e Press Main/Delayed , then press the Time Ref Lft softkey.
f Adjust the trigger level to obtain a stable display.
3
Press Time , then press the Freq and Period softkeys.
You should measure the following:
Frequency 10 kHz, test limits are 9.96 kHz to 10.04 kHz.
Period 100 µs, test limits are 99.59 µs to 100.41 µs.
If the measurements are not within the test limits, see "Troubleshooting the
Oscilloscope," on page 4-32.
4
Change the time mark generator to 1 µs, and change the time base to
200 ns/div. Adjust the trigger level to obtain a stable display.
Service
Verifying Oscilloscope Performance
4-13
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