Performance Check/Calibration—Type 422 AC-DC
Fig. 5-7. Location of high-voltage test point (rear panel, socket
cover removed).
b. Adjust the FOCUS and ASTIGMATISM controls for a
well defined display.
Fig. 5-8. Location of Unblanking Center adjustment (Horizontal
Amplifier board).
d. Set the Channel 1 VOLTS/DIV switch so the large
markers extend beyond the top and bottom of the graticule
area.
c. CHECK—Trace should be parallel to the center
horizontal line within 0.1 division/10 divisions (i.e., with
trace positioned to center horizontal line at the left vertical
line of the graticule, the trace must be within 0.1 division
of the center horizontal line at the right vertical line).
e. CHECK—Markers should be parallel to the center
vertical line within 0.1 division.
f. ADJUST—Y Axis Align adjustment R856 (see Fig.
5-10) so the markers are parallel to the center vertical line.
NOTE
This tolerance is provided as a guide to correct
instrument operation and is not an instrument
specification.
d. ADJUST—Trace rotation adjustment R851 (see Fig.
5-9) so the trace is parallel to the center horizontal line.
NOTE
If the Trace Rotation adjustment does not have
enough range to make the trace parallel with the
horizontal graticule lines, reverse the connection of
these leads at the Horizontal Amplifier board.
11. Check/Adjust Y Axis Alignment
a. Connect the time-mark generator (Type 184) to the
INPUT 1 connector with the 42-inch BNC cable.
b. Set the time-mark generator for output markers of
one and 0.1 millisecond.
c. Set the LEVEL control for a stable display.
Fig. 5-9. Location of Trace Rotation adjustment (rear panel).
To Next Page
Loading...
