Tektronix 7704A User Manual

Calibration-7704A Service
1 . Sig n al standar d izes calibration fixture
2 . 71392
time-base
plug-in unit
3 . 7 Α 19 vertical am p lifier p lug-i n unit
4 . P
lug-i
n
exten
d er calibratio n fixture
E qui p me n t R e q uire d
5 . Test-oscillosco pe ( d ual
trace)
6 . Two 42-i nch 50-oh m BN C cab les
7 . Two 50-o
h m
te
r mi n ations
8 . Seven-inc h screwdriver
Control Settings
Set t
h
e 7704 Α con trols as
follows
:
P O WER
VER TICA L M OD E
VER TT R AC E
S EP A R ATIO N ( Β )
A TRIGGER SOUR C E
Α ΙΝΤΕΝ
H O R IZO N TA L M OD E
Β ΙΝΤΕΝ
Β T R IGG ER SOUR C E
I N T EN SITY
F
OC
U
S
RE ADO UT
GR ATI LLUM
ON
R IG H T
Midrange
VER
T
M
OD
E
Midrange
Α
Midrange
VER T
M
OD
E
Midrange
Set for α well- d efine d
d is p lay
O FF
Midrange
\/20 . C h ec k T r igger Selector O p eration
α .

R emove
all
plug-i n units . Install t he plug-in extend er
fixture in t he h orizo n tal compartment .
b .
Connect t h
e
trigger li n es from t he p lug-i n exten d er
( Α 20 and Β 20) to t he test-oscillosco p e . Use one 50-o
h m
BN C cable and 50-oh m termi
n ation from eac h trigge r li ne
to
t he test-oscillosco p e vertical ch a nn els .
c . Set both test-oscillosco p
e vertical channels for α
d eflection factor 50 millivolts/ d ivisi οη grou nd input coupl-
ing . Set t he test oscilloscope fo r d iffere n tial o p eratio n
between t h e two channels (adde d display mode
wit h one
ch a nn el i n verte d ) at α swee p rate of 20
microseco nds/ d ivi-
sio n . Set i nput coupling to
DC .
d . C
HE
C
K -T he test-oscillosco p e display for α DC
level wit h in 0 .5 divisio n (25 millivolts) of t h e groun
d
reference level i n t he LEF T, R IG H
T,
and
ADD p ositions of
t he VER T M OD
E switc h .
4- 1 4
T
R IGG ER SYST EM CA L I BRATIO N
e . I n stall t he sig n al sta n dardizes
cali b ration fixture i n
t he left vertical com
p artment . Set t he sig n al sta n dardizer
calib
r atio n fixt u re to triggeri n g gai n .
f . Set t h e
VER T M OD E switch to LEF T .
g . C HE C K -Test-oscilloscope
d isplay for n i n e traces
wit h t he deflectio n between
t he seco nd an d eig h t h traces
of six divisio ns ±0 .9
division (300 millivolts wit h i n 45
millivolts) .
Install t h e sig n al sta n d ardize r calibratio
n fix-
ture
in t he rig h t vertical com p a r tme n t .
Set t h e VER T
M OD E switch to R IG H T .
h . C
HE
C
K -Trigger gai n of t h e rig h t vertical
com p art-
me n t .
, V 21 Α . C
HE
CK Trigger
Selector O p eration
α . I n stall t h e time-base p lug-i n unit i n t h e
h orizontal
com p artme n t and t h e vertical amplifier p
lug-in u n it i n t he
left vertical com p a r tme
n t .
(R, . .-1,4o t_r L -crew
r4 .e 2
ι 4
Sfi1~1
ι ι J % τωι ~r - r> )
b . Set t he left vertical
amplifier p lug-in un it for α
d eflection factor of 0 .2 volt/
d ivision .
c .

Co nnect t he 0 .4 calibrator sig n al to
i np ut con n ecto r
of t h e left vertical amplifier
plug-in u n it .
d . Set t he signal sta ndard izes cali
bratio n fixture test
switc h to V ert or H oriz
+Step R es p , and t he R ep R ate
switc h to
1 kH z . Set t he amplitude control for α two-
d ivision display .
REV .
C,
ΜΑΥ ,
1976

Tektronix 7704A Specifications

General

Brand	Tektronix
Model	7704A
Category	Test Equipment
Language	English