TB 9-4931-538-40
Figure 12. Vertical assembly A2 adjustments.
e. Readjust the channel offset to re-center the signal on display.
f. Press Delta V key. Set both V MARKERS ON and overlay them on Channel 1.
g. Press Preset Levels key until Preset Levels 0-100% is highlighted.
h. Press Channel and OFFSET keys and adjust RPG control to center signal on display.
i. Press Delta V and Auto Level Set keys.
j. Press Display key. Press Display Mode key until Persist is highlighted and set
Persistence = 300 ms.
k. Preset SRD BIAS on horizontal assembly A1 (fig. 11) to mechanical center.
l. Adjust SRD DRIVE on horizontal assembly A1 (fig. 11) for a signal amplitude of 0%
and + 100% on display.
NOTE
An offset may exist in the signal during this portion of the
adjustments. If the signal peaks do not overlay the 0% and
100% markers, adjust SRD DRIVE (fig. 11) for equal amounts
of signal above or below the markers in the following steps.
The OFFSET level may be adjusted anytime during this
procedure.
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