Sony Tektronix VX4792 User Manual page 270

External CLOCK INPUT Check
CLOCK
INPUT
WAVEFORM
OUTPUT
Figure F-18: External CLOCK INPUT Initial Test Setup
VX4792 User Manual
c. Check external trigger level accuracy:
H Gradually decrease the function generator offset level until a
waveform is displayed on the oscilloscope.
H Check that that the function generator offset level is between
–1.15 V and –0.85 V, when the waveform is first displayed.
5. End procedure: Turn off the function generator output and disconnect the
function generator.
This procedure checks the VX4792 Arbitrary Waveform Generator response to
an external CLOCK INPUT signal.
Electrical Characteristic Checked: Auxiliary Inputs, Clock, Threshold level,
on page E–6.
Equipment Required: Two 50 W coaxial cables, a function generator, and an
oscilloscope.
Prerequisites: The instrument must meet the prerequisites listed on page F–3.
Procedure:
1. Install test setup and set test equipment controls (see Figure F–18):
VX4792
Performance Verification
Oscilloscope
Ch 1 Input
Function
Generator
Output
F-37