Table of Contents
Advertisement
PfAK DETECTORS ZERO
NEGATIVE
POSITIVE
~'-
...
_
0 1 ATTENUATOR GAIN
Figure 5-15.
Scope/DVM Control Alignment Points
SPfCTRUM
ANAlYZER
CENTERING
4.
Adjust the Coarse Time Base Calibration Potentiometer on the Scope Amplifier Board (Figure 5-16) so
that one cycle of the displayed waveform occurs in 5 em along the horizontal axis. Use the Vertical and
Horizontal Position controls to center and to move the waveform so that the 5 em are measured in the
middle of the screen to avoid nonlinearities near the edge of the CRT.
Figure 5-16.
Horizontal Time Base Alignment Points
5.
Set the Oscilloscope Horizontal Control for a 10011 Sec/Div sweep rate and select the Tone B output
on the Code Synthesizer.
6.
Adjust the Fine Time Base Calibration Capacitor on the Scope Amplifier Board (Figure 5-16) so that
one cycle of the displayed waveform occurs in 5 em along the horizontal axis. Use the Vertical and
Horizontal Position controls to center and to move the waveform so that the 5 em are measured in the
middle of the screen to avoid nonlinearities near the edge of the CRT.
5-27
Advertisement
Chapters
Table of Contents
