Adjustment Procedure— 2213 Service
b. Connect a leveled sine-wave generator via a 50 Q
cable and a 50 0 termination to the CH 1 OR X input
connector.
c. Adjust the generator output for a 4-division, 50 kHz
display.
d. ADJUST— Both the Astig adjustment (R887) and the
AUTO FOCUS control for the best focused display over the
range of the AUTO INTENSITY control.
e. Set the A SEC/DIV switch to 5 #ts.
f. ADJUST— Auto Focus Adj (R875) for the best
focused display. Do not change the front panel AUTO
FOCUS control.
g. Disconnect the test setup.
5. Check/Adjust Trace Alignment (TRACE
ROTATION)
a. Set the Channel 1 AC-GND-DC switch to GND.
b. CHECK—That the trace is parallel to the center hori
zontal graticule line.
c. ADJUST—The front-panel TRACE ROTATION con
trol to align the trace with the center horizontal graticule line.
6. Adjust Geometry (R870)
a. Set:
CH 1 VOLTS/DIV 50 mV
Channel 1 AC-GND-DC DC
b. Connect 50 ns time markers from the time-mark
generator via a 50 Q cable and 50 G termination to the CH 1
OR X input connector.
c. Adjust the A AND B SEC/DIV Variable control for 5
markers per division.
d. ADJUST— Geom (R870) for minimum curvature of
the markers across the graticule area.
e. Disconnect the test setup.
5-6
REV NOV 1982
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