Tektronix 7704A User Manual

Calibration-7704A Service
1 . Signal sta nd ar d izes calibration fixture
2 . Time- b ase plug-in unit (two re q uire d )
3 .
Amplifier plug-in unit (two re q uire d )
Eq ui p ment R eq uire d
4 . H ig h -fre q uency constant-am p litude signal
generator
5 . T h ree-inc h screw
d river
6 . L ow-capacitance screwdriver
Control Settings
4- 1 0
Set
t
h e 7704
Α controls as
follows
:
P
O
WER
VER TICA L M OD E
VER TTR AC E
SEP A R ATIO N ( Β )
Α TR IGG ERSOUR C E
Α ΙΝΤΕΝ
H O R IZO N TA L M OD E
Β ΙΝΤΕΝ
Β T R IGG ER SO UR C E
I N T EN SITY
F OC U S
RE ADO UT
G R AT I LLUM
T h e location of ad j ustments is s h own on α
pullout,
page 6-33, in t he Diagrams section .
NO ΤΕ
ON
A LT
Midrange
VER T M OD E
Midrange
Α
Midrange
VER T M OD E
Midrange
A d ju st for α well- d efi n ed
dis p lay
O FF
Midrange
T h e V er tical Inte rface Centering and Gain ad j ust-
ments do not need to be c hec k ed during routine
calibration . H owever, if components are replaced o r if
t h e Ac q uisition U nit is used in α different system,
ad j ustment mig h t be necessary . T
h e need for ad j ust-
ment is indicated
if
the
V ertical System ad ju stments
can not be
performed acco r ding to t he following
proced
u
re
.
Calibration
information for t he V ertical
Interface h given
under Special Ad j ustment P ro-
cedures in -e M aintenance section .
11 . Ad j ust V ertical Am p lifier Centering
α . Install α time-base unit i n t h e Α H O R IZ com
p art-
ment .
b . Set t h
e time-base unit for α free-run n ing sweep at α
rate of 100mie .oseconds/ d ivision .
VER
TICA L SYST EM
ΝΟΤΕ
c . C HE C K -C
RT display ; vertical position of alternating
traces (mig h t app ear as α single trace) is with in 0 .2 division
of t he graticule center li ne .
d . AD JU ST- V ertical Amplifier Centering a d j ustment
R
4493 (see F ig . 6-32) for e q ual spacing of t h e traces
from
t
h
e gratic
u le center line . (If t he traces appear as α si n gle
trace, ad j ust
R 4493 to position t h e trace to t he graticule
ce n ter
line .)
12 . A d j ust V ertical Am p lifier B ias
α .
Set t h e VER TICA L M OD E switc h to R IG H T .
b . Install t h e signal stan d ar d
izes cali b ration fixture in
t h e R IG H T VER
T
com
partment .
c . Set t he cali b ration fixture Test switc h to V ert or
H oriz Gain and t h e R e p R ate to 1 kH z .
d . AD JU ST- V ertical Am p lifier B ias a
d j ustme n t
R
4415
(see F ig . 6-32) for
maximum deflection between t h e traces .
χ /13 . A d j ust V ertical
Am p lifier Gain
α . Set t he cali b ration fixture for α R ep R ate of 100 kH z .
P ositio n t hed isplay to align t he
brig h t center trace with t he
graticule center line .
-\/b . C h ec k -Deflectio n b etween t h e second
and eig h t h
traces s h oul d be six d ivisio n s ± 0 .06 d ivision
. N ote t he
exact d eflectio n for p art f of t h is step .
ε . AD JU ST- V
ertical Amplifier Gain a dj ust m ent R 4406
(see F ig . 6-32) for
exactly six d ivisions of d eflection be-
tween t h e second and
eig h t h traces .
REV . Β , JUNE,
1975

Tektronix 7704A Specifications

General

Brand	Tektronix
Model	7704A
Category	Test Equipment
Language	English