Adjustment Procedure—2465B/2467B Service
e. Repeat parts b through d until no change is observed
in the waveform front corner when the CH 1 VOLTS/DIV
switch is alternated between the 50 mV and 0.1 V
posi-
tions.
When switching between positions, reestablish the
reference display amplitude at each position, and observe
the square-wave front corner to make the comparison.
f. Move the input signal to CH 2 and change the VERT-
ICAL MODE to display CH 2 only. Adjust the generator
amplitude for a 6-division signal amplitude.
g.
Set the normalizer for a square front corner over
approximately the first 40 pts (0.4 division) of the positive
portion of the waveform.
h. Change the CH 2 VOLTS/DIV switch to the 50 mV
position and adjust the generator for a 6-division display.
i. ADJUST—The CH 2 50 mV C Adj (C205 on the Main
Board) for the same waveform front corner noted in
part g.
j.
Repeat parts g through i until no change is observed
in the waveform front corner when the CH 2 VOLTS/DIV
switch is alternated between the 50 mV and 0.1 V
posi-
tions.
When switching between positions, reestablish the
reference signal amplitude at each position, and observe
the square-wave front corner to make the comparison.
a. Set:
VERTICAL
CH 1 Input Coupling 50 fi DC
CH 1 VERTICAL MODE On
CH 2, CH 3, and
CH 4 VERTICAL MODE Off
Horizontal
A SEC/DIV 500 /xs (knob in)
b. Press and release the AV button to obtain a AV
display.
c. Use the A REF OR DLY POS control to position one
cursor 3 divisions above graticule center. Use the A
con-
trol to position the other cursor 3 divisions below graticule
center.
d.
Connect a 1 kHz, fast-rise signal from the Calibration
Generator to the CH 1 OR X input connector via a
50 a BNC cable.
e. Set the generator output level for an 8-division
display.
k. Disconnect the test setup.
f. Use the CH 1 Vertical and Horizontal POSITION
con-
trols to center the CH 1 display on the graticule.
2.
Adjust Vertical Readout Jitter (R618).
NOTE
If the previous step was not performed, first set up
the Initial Control Settings before, then proceed as
follows.
g.
ADJUST—Vertical Readout Jitter (R618) for
minimum vertical jitter of the readout characters and
cursors.
h. Disconnect the test setup.
5-11
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