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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
Time marker generator
Cable
Connect the time mark generator to channel 1. Then, set the time
1
mark generator for 0.1 ms markers.
Setup the oscilloscope.
2
a
b
c
d
e
f
Press
3
You should measure the following:
If the measurements are not within the test limits, see "Troubleshooting the
Oscilloscope," on page 4-32.
Change the time mark generator to 1 µs, and change the time base to
4
200 ns/div. Adjust the trigger level to obtain a stable display.
Critical specifications
Stability 5 ppm after 1/2 hour
BNC, 3 feet
, then press the Default Setup softkey.
Press
Setup
Press
, then toggle Input softkey to 50Ω.
1
Press
.
Autoscale
Set the time base to 20 µs/div.
Press
Main/Delayed
Adjust the trigger level to obtain a stable display.
, then press the Freq and Period softkeys.
Time
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.
Verifying Oscilloscope Performance
, then press the Time Ref Lft softkey.
Service
Recommended Model/Part
TG 501A and TM 503B
HP 10503A
4-13
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