Tektronix 7704A User Manual

Z-AXIS
A N D DIS PL AY
Eq ui p ment R eq uired
Calibration-7704A
Service
1 . DC voltmeter (V O M)
2 . Signal stan d
ar
d izer
calibration fixture
3 . Time- b ase
plug-i n unit (two re q uire d )
4 . Am p lifier p lug-in unit
5 . Test oscillosco p e system with 10 Χ pr o be
6 . Time-mark generator
7 .
L ow-fre qu e n cy signal generator
8
.
T h ree-i
n c
h
screw
d
river
9 . Low-ca
p acita
n
ce
screw d river
ΝΟΤΕ
Th e location of ad j ustments and test points fo r calibration is shown on α foldout, page 6-33, in t he
Diag r ams section .
Control Settings
4 . A
d j ust
H
ig h - V oltage P owerSu pp ly
α . Co
nn ect
t
h e
DC
voltmeter
(V O
M),
set to meas
u re
at
least 3000 volts,
between
ΤΡ 4222 and c h assis
groun
d (see
F ig . 6-30) .
b . Set t he P O WER switc h to on .
ε . C HE CK -M eter rea d i ng ; -2960 volts ±29 .6 volts .
d . AD JU ST- H ig h V oltage a d ju stment R 4123 (see F ig .
6-31) fo r α meter rea d ing of -2960 volts .
e . Set t he P O WER switc h to off an d d isconnect t he
voltmeter .
R et u rn t he P O WER switc h to on .
REV .
Β , ΜΑΥ , 1976
5 . A d j ust CR T Gri d B ias
factor of
0 .2
volt/ d
ivisio
n
(two volts/divisio n at pro b e ti p )
an
d
α swee
p
rate of o ne milliseco nd / d ivision .
e . E sta b lis h α ground refe r ence level fo r
t h
e
test
oscillosco pe b y eit h er g r
ou
n d i ng t he p
ro
b
e ti p o
r
setti ng t he
in p ut coup li ng to gro und . T h en, positio n t he test
oscil-
losco pe trace to t h e b ottom h orizo n tal li n e of t h
e gratic u le .
Do not change t h e test-oscillosco p e position
control after
setting t h is gro und reference .
f . Conn ect t he p ro b e ti p to ΤΡ 41120 (see F ig .
6-31)
;
co nn ect t he p ro be ground to ch assis g r ound with α s ho r t
g r o un ding
stra p .
g . Note t he DC level in d
icate d by the test-oscillosco pe
trace .
h .
Set t he I N T EN SITY con trol for α DC level fou r volts
more p ositive t han t he level note d
i n p art g .
4- 7
Set t h e 7704 Α controls as follows : α . I n stall t he sig n al standardize r calibratio n fixt u re in
t h e R IG H T VER T com partment a nd α time- b ase un it in t he
P O WER O FF Α ΗΟ R ΙΖ com p artment .
VER TICA L M OD E R IG H T
VER T TR AC E
S EP A R ATIO N ( Β ) Midrange
b . Set t he time- b ase unit for α free-ru nn i ng sweep at α
Α T R IGG ER SOUR C E VER T M OD E
rate of 0 .2 seco
n
d / d
ivisio n .
Set t
h e
calibration fixture
Α ΙΝΤΕΝ F ully cloc k wise
Test switc h to Triggeri ng Gain .
H O R IZO N TA L M OD E Α
Β ΙΝΤΕΝ Fu lly cloc k wise
Β T R IGG ERSOUR C E VER T M OD E
ε . Co n nect t he 10 Χ pro be to t he in p ut of t he test
I N T EN SITY F ully co un tercloc k wise
oscillosco p e .
C
h
ec
k
t
he p
ro
b e
com
p
ensatio n .
F OC U S Midrange
RE ADO U T O FF
G R ATI LLUM Midrange
d . Set t he
test oscillosco p e
for
α ve r tical d eflection

Tektronix 7704A Specifications

General

Brand	Tektronix
Model	7704A
Category	Test Equipment
Language	English