Motorola R-2001A Service Manual page 70

PEAK DETECTORS ZERO
NE6ATIVE POSITHE
Figure 5-15.
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 cm along the horizontal axis. Use the Vertical and
Horizontal Position controls to center and to move the waveform so that the 5 cm are measured in the
middle of the screen to avoid nonlinearities near the edge of the CRT.
Figure 5-16. Hor|zon'l»t Time Base Alignment Points
Set the Oscilloscope Horizontal Control for a 100ft Sec/Div sweep rate and select the Tone B output
on'-the Code Synthesizer.
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 cm along the horizontal axis, Use the Vertical and
Horizontal Position controls to center and to move the waveform so that the 5 cm are measured in the
middle of the screen to avoid nonlinearities near the edge of the CRT.
Scbpe/DVM Control Alignment Points
5-27