Tektronix 465B User Manual

Calibration Procedure—465B
Service
Adjustment
Procedure
6.
Check/Adjust CH
1 Var
Volts/Div Balance And
Var
Indicator (R1484)
a.
Position trace
to center
horizontal graticule
line.
b.
CHECK—
CH 1 UNCAL LED is
illuminated when
VAR control is out of
detent.
c.
CHECK—Trace
shift of 0.2
division or less when
rotating VAR
control from one
extreme to the
other.
d.
ADJUST—CH 1 Var
Bal (R1484) for
minimum trace
shift while
rotating CH 1
VAR control from
oneextremeto
the
other.
e.
Return CH 1
VAR control to
detent position.
7.
Check/Adjust CH 1
Position Centering (R1135)
a. Set:
CH
1
VOLTS/DIV
.2 V
CH 1
AC-GND-DC
AC
A
TIME/DIV
1 ms
c.
CHECK—Trace
shift is 0.2
division or less when
rotating VAR control
from one extreme to the
other.
d.
ADJUST—
CH 2 Var Bal
(R1
884)
for minimum trace
shift while rotating CH 2
VAR control from
oneextremeto
the other.
e.
Return CH
2
VAR control to
detent position.
9. Check/
Adjust CH 2 Invert
Balance (R1975)
a. Set
CH 2 AC-GND-DC to
GND.
b.
Position trace to
center horizontal graticule
line and
push INVERT button in.
c.
CHECK—Trace
shift is 0.2 division or
less when
switching from
normal to inverted.
d.
ADJUST—Invert Bal (R1975) for
minimum trace
shift.
b.
Connect leveled
sine-wave generator
output to
CH 1 input
via 50 Q bnc
cable and 50 Q
termination. Set
the
generator for a
vertical display of
2.4 divisions at
50
kHz.
c.
Set
CH 1 VOLTS/DIV
switch to 20 mV without
moving the
VAR control.
10.
Check/Adjust
CH 2
Position Centering (R1735)
a. Set:
INVERT
CH 2 VOLTS/DIV
CH 2 AC-GND-DC
A TRIGGER
LEVEL
Normal (button out)
.2 V
AC
Fully clockwise
d.
CHECK—Top of
display
positions down
to
center
horizontal
graticule line
or below, bottom of
display
positions
up
to center
horizontal graticule line
or above.
e.
ADJUST—CH 1
Position Center (R1
135)
so
display
positions same distance
above and below
graticule center
line.
b. Connect leveled sine-wave generator output to
CH 2 input
via 50 fi bnc cable and 50 Q bnc termination.
Set
the generator for a vertical display of 2.4 divisions at
50
kHz.
c. Set
CH 2 VOLTS/DIV switch to 20 mV without
moving VAR control.
f. Disconnect
generator.
8. Check/
Adjust
CH 2
Var Volts/Div Balance and
Var
Indicator (R1884)
a. Set
VERT MODE switches to display
CH
2.
d. CHECK—Top of
display positions down
to
center
horizontal graticule line or below, bottom of display
positions up
to
center horizontal graticule line or above.
e.
ADJUST—CH 2 Position Center (R1
735)
so display
positions same distance above and below graticule
line.
b.
CHECK—CH 2
UNCAL
LED is
illuminated when
VAR
control is out of detent.
f-
Disconnect generator.
4-29

Tektronix 465B Specifications

General

Brand	Tektronix
Model	465B
Category	Test Equipment
Language	English