Adjustment Procedure—2465B/2467B Service
q.
CHECK—Readout indicates CH 4, 2V, and
(step) 221.
r. Change the generator output level to 2 V, then press
and release the upper TRIGGER COUPLING switch.
TRIGGER
SOURCE
MODE
COUPLING
SLOPE
CH 1
AUTO LVL
DC
+ (plus)
s. Disconnect the test setup.
CAL 04—CH 2 DELAY ENABLE/DISABLE
4. Check/Adjust CH 2 Delay Enable/Disable.
a. Scroll to CAL 04.
b. Press and release the upper TRIGGER COUPLING
switch to initiate the routine.
g.
Set the generator amplitude for a 3- to 5-division
display amplitude. Use the CH 1 and CH 2 POSITION
con-
trols to vertically overlay the traces near the center of the
graticule area.
h. Set the Horizontal POSITION control to set the rising
edge of the signal near the center vertical graticule line.
i. Press the X10 MAG button to obtain a magnified
display.
Pull out the SEC/DIV knob.
c. CHECK—Readout alternately indicates "ENABLED"
and "DISABLED" each time the upper TRIGGER
COU-
PLING switch is pressed and released.
k. CHECK—Readout indicates "CH 2 DLY—TURN fi"
and that the A control will move the leading edge of the
CH 2 trace at least 1 division to either side of the CH 1
trace.
d.
Leave the readout display indicating "ENABLED".
Press and release the A/B TRIG button to exit the routine.
e. Connect a 100 kHz, positive-going signal from the
Calibration Generator fast-rise output to the CH 1 OR X
and CH 2 input connectors via a 50 Q BNC cable, a
5X attenuator, and a Dual-Input Coupler.
f. Set:
VERTICAL MODE
CH 1 and CH 2 On
VOLTS/DIV
CH 1 and CH 2
10 mV
I. ADJUST—A control to superimpose the leading
edges.
m. Push in the SEC/DIV knob.
NOTE
If the CH 2 Delay Adjust feature is to be disabled for
normal instrument use, perform the following steps;
otherwise, proceed to CAL 05.
n. Reenter the Diagnostic Monitor by pressing the AV
and At buttons simultaneously (hold them in), then press
and hold the TRIGGER SLOPE button. Release the but-
tons after about 1 second.
o. Scroll to CAL 04.
Input Coupling
CH 1 and CH 2
50
Q
DC
p. Press and release the upper TRIGGER COUPLING
switch until the readout indicates "DISABLED."
Horizontal
A SEC/DIV
5 ns (knob in)
q.
Press and release the A/B TRIG button to return to
normal operating mode.
5-19
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