Tektronix 465B User Manual

Calibration
Procedure
—465B
Service
Adjustment
Procedure
b. Connect
CT-3 Sig Out
10% signal toCH
1 and CH 2
inputs via a 50
O bnc cable,
50 Q
termination and a
dual-
input coupler.
c.
Adjust
the leveled
sine-wave
generator for a
3-
division
display.
d. Set the
CH 1
VOLTS/DIV
switch to 0.1 V
(0.3-
division
display).
e.
CHECK—
Stable
display can be
obtained by
rotating
A
TRIGGER
LEVEL control
in both +
and
-
slopes.
f. CHECK—
TRIG LED is
on when the
display is
stable.
g.
Set
CH
1
VOLTS/DIV
switch to 5
mV
and adjust
leveled
sine-wave
generator for a
2-division
display.
h. Set
CH 1
VOLTS/DIV switch to
0.1 V
(0.1-division
display).
i.
CHECK—
Stable
display
cannot be
obtained by
rotating
A
TRIGGER
LEVEL control in
both + and
-
slopes.
Return the
A
TRIGGER SLOPE
control to
+.
j.
If the
checks
in parts c
through i
meet the re-
quirements, proceed
to step 2. If
not,
make the
following
adjustments.
k.
Set
the CH 1
VOLTS/DIV
switch to 10
mV and
adjust the
leveled
sine-wave
generator for a
2.5-division
display.
k
Set the
CH 1
VOLTS/DIV
switch to 0.1 V
(0.25-
division
display).
m.
ADJUST-A Trigger
Sensitivity
(R7246) so
display
can just be
triggered by
rotating
A TRIGGER
LEVEL
control (A
TRIGGER
SLOPE in +).
n.
Set CH 1
VOLTS/DIV
switch to 10
mV and
adjust the
leveled
sine-wave
generator for a
2-division
display.
0. Set
the CH 1
VOLTS/DIV switch to
0.1 V
(0.2-
division
display).
p.
CHECK—
Stable display cannot be
obtained by
adjusting
the A
TRIGGER LEVEL
control in + slope only
(-
slope
is generally
slightly more sensitive).
q.
If a stable
display can be
obtai ned, then the
trigger is
too sensitive.
Adjust A Trigger
Sensitivity (R7246)
slightly
so display will just
barely not trigger by
adjusting the A
TRIGGER
LEVEL control (in
+ slope only).
r. Repeat parts
k through
p
until a
stable
display can be
obtained on
a 0.25-division
display, but
not on a
0.2-
division display (+
slope only).
q.
Repeat
checks in parts c
through
i.
2.
Check/
Adjust B
Trigger
Sensitivity (R7045)
a.
Set:
HORIZ DISPLAY
B
DLY'D
CH 1
VOLTS/DIV
10 mV
A
TRIGGER LEVEL
Fully
clockwise
B
TRIGGER LEVEL
As needed for a
stable
display.
b.
Adjust leveled
sine-wave
generator for a
3-division
display.
c. Set
the CH 1
VOLTS/DIV
switch to 0.1 V
(0.3-
division
display).
d.
CHECK—
Stable display
can be
obtained by
rotating B
TRIGGER
LEVEL control in
both +
and
-
slopes.
e.
Set CH 1
VOLTS/DIV
switch to 5 mV
and adjust
the
sine-wave
generator for a
2-division
display.
f. Set
the CH
1 VOLTS/DIV
switch to
0.1 V
(0.1-
division display).
g.
CHECK—
Stable display cannot be
obtained by
rotating
the B
TRIGGER
LEVEL control
in either
+ or
-
slope.
Return B
TRIGGER
SLOPE control to
+.
h. If
check results
in parts b
through
g
meet
requirements,
proceed to
step 3. If not,
makethefollowing
adjustments.
REV
A
SEP 1979
4-41

Tektronix 465B Specifications

General

Brand	Tektronix
Model	465B
Category	Test Equipment
Language	English