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
±
0.01%
±
0.2% of full scale
±
200 ps.
Table 4-9
Equipment Required
Equipment Critical specifications Recommended Model/Part
Time marker generator Stability 5 ppm after 1/2 hour TG 501A and TM 503A
Cable BNC HP 10503A
Termination 50
Ω
, BNC connectors (m) (f) HP 10100C
1
Connect the time mark generator to channel 1 using the feedthrough
at the oscilloscope input. 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
Diplay
, then press the
Vectors Off
softkey.
c
Press
Autoscale
.
d
Set the time base to 20
µ
s/div.
e
Adjust the trigger level to obtain a stable display.
Service
Verifying Oscilloscope Performance
4–16
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