Calibration Procedure—465B
Service
Adjustment
Procedure
c. Set:
TIME/DIV (both) 10 ms
CH
1
AC-GND-DC GND
A TRIG MODE SINGL SWP (push in)
d. CHECK—READY LED
Illuminates.
e.
Set the CH 1 AC-GND-DC switch to DC.
f.
CHECK—
A
single
sweep
occurs and the READY
LED goes out.
g.
Press the SINGLE SWP push button in.
h. CHECK—A single sweep occurs each time the
SINGL SWP push
button
is
depressed.
i. Remove the test setup.
16. Check 60
Hz Internal Triggering
a. Set:
TIME/DIV (both) 5 ms
TRIGGER MODE
NORM
CH
1
VOLTS/DIV 10 mV
b. Connect the
low-frequency
generator
signal
to
the
CH 1 input via a 50
fi bnc cable, bnc T and 50 0 bnc
termination. From bnc T, connect a 50 O bnc cable and
50
Q bnc termination to the B External Trigger input.
c.
Adjust the low-frequency generator for a
3-division
(30
mV) display at 60 Hz.
d. SettheCH 1
VOLTS/DIVswitchto.1
V
(0.3-division
display).
e. CHECK— For a
stable display, with both +
and
-
slopes for these modes:
TRIGGER COUPLING
AC.
DC
f.
Set:
CH/ VOLTS/DIV 10 mV
A TRIGGER COUPLING HF REJ
g.
Set the low-frequency generator for a 5-division
(50
mV) display at 60 Hz.
h. Set
the CH 1 VOLTS/DIV switch to 0.1 V
(0.5-
division display).
i. CHECK—
For a
stable display,
with
both +
and
-
slopes.
j.
Set the A TRIGGER COUPLING switch
to
LF REJ.
k.
CHECK—
No
stable display.
I. Set:
A TRIG MODE AUTO
A TRIGGER LEVEL Fully clockwise
A TIME/DIV
10 ms
B TIME/DIV 5 ms
B
TRIGGER
SOURCE NORM
B TRIGGER COUPLING HF REJ
HORIZ DISPLAY B DLY'D
CH 1 VOLTS/DIV 0.1
V
m. CHECK—
For a
stable display,
with both + and
-
slopes.
n.
Set
the
B TRIGGER COUPLING switch to LF REJ.
o. CHECK—No stable display.
p.
Set:
CH 1 VOLTS/DIV 10 mV
B TRIGGER COUPLING AC
q.
Set the low-frequency generator for a
3-division
(30 mV)
display
at 60 Hz.
r. SettheCH
1
VOLTS/DIV switch to 0.1 Vandusethe
B TRIGG ER LEVEL control
as
needed for
a
stable display.
s. CHECK—For a stable display, with both + and
—
slopes for these modes:
B TRIGGER COUPLING
AC, DC
@
4-48
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