Sony Magnescale GB-A Serie Bedienungsanleitung Seite 81

4 When the RV1 volume is rotated completely to the left
(counter-clockwise) and the scale is moved, the
waveform shown in Fig. 4-7 appears as in step 3
above. At this point, adjust the RV5 volume so that
neighboring peaks are of the same height as shown in
Fig. 4-8.
Repeat the adjustments in steps 3 and 4 alternately
until the height of neighboring peaks are not disturbed
by rotating the RV1 volume.
5 When the RV1 volume is set near the center and the
scale is moved, the waveform shown in Fig. 4-9
appears. At this point, adjust the RV3 volume to
minimize the envelope ripple. Then, finely adjust the
RV1 volume to minimize the envelope ripple.
Here, the fine adjustment can be facilitated by raising
the oscilloscope sensitivity (50 to 100 mV/div),
adjusting the vertical position, and enlarging the
envelope ripple in the center of the screen before
adjusting the volume.
6 Adjust the RV2 volume again so that the sine wave
amplitude is between 1.9 Vp-p and 2.1 Vp-p as shown
in Fig. 4-10. Fig. 4-10 shows the ideally adjusted
condition.
Fig. 4-9
Fig. 4-10
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