Sony Tektronix VX4792 User Manual page 258

Clock Frequency and Amplitude Checks
Check Clock Frequency
Accuracy
VX4792 User Manual
These procedures check the accuracy of the clock frequency and the clock output
amplitude.
This procedure checks the CLOCK OUTPUT signal frequency accuracy.
Electrical Characteristic Checked: Clock Generator, Accuracy, on page E–2.
Equipment Required: A 50 W coaxial cable and a frequency counter.
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–12):
CLOCK
OUTPUT
Figure F-12: Clock Frequency Accuracy Initial Test Setup
a. Connect frequency counter: Connect the CLOCK OUTPUT to the
frequency counter input through a coaxial cable.
b. Set frequency counter controls:
CHANNEL A
Termination
Slope
Attenuation
Coupling
FREQ A
VX4792
50 W
Negative
X5
DC
Performance Verification
Frequency
Counter
Input
F-25