Tektronix 7704A User Manual

CA L I BR ATO R
Calibration-7704A Se r vice
1 . P recision DC voltmeter
2 . Am p lifier p lug-in unit (two re q uired)
3 . Time-b ase p lug-in unit
Eq ui p ment R eq uire d
4 . Time-mar k generator
5 . T
h ree-i
nc
h
screw
d river
Control Settings
Set t he 7704 Α controls as
follows :
P
O
WER
VER TICA L M OD E
VER T T
R AC E
S
EP A R ATIO N ( Β )
Α TR IGG ERSO UR C E
Α ΙΝΤΕΝ
H O R IZO N TA L M OD
E
Β ΙΝΤΕΝ
Β T R IGG ERSO UR C E
I
N T EN SITY
F
OC
US
RE ADO UT
G R AT I 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
\/27 . A d j ust Calibrator Out pu t V oltage
α . Connect t h e inner lea d of C1001 to ch assis ground .
(C1001 is t h e large, metal-case d capacitor located on
the
Cali b rator B oar d beh in d t h e H O
R
IZO
N TA L M OD E
switc
h
circuit board ; see F ig . 6-35 .
b . Connect t h e precision
DC voltmeter b etween t h e
CA
L I BR ATO R
0 .4 V and
GND pin j ac k s .
Ν /c .
C HE C K-M eter rea
d
ing ; 0 .4 volt ±0 .004 volt wit h in
0
.008
volt if t h is measurement is ma d e outsi d e t h e +1 5 0 C
to +35 ° C tem p erature range) .
ΝΟΤΕ
If α zero-volt
meter reading is obtained, momentarily
remove t h e
connection between C1001 and ground
for α DC outp
u t .
ΝΟΤΕ
T he location of a dju stments and test p oints for
calibration
is shown
on
α pullout, page 6-35, in t he
Diagrams section .
d . AD JU ST-0 .4 V a d j ustment R 1037 (see F ig . 6-35)
for α meter rea d i ng of exactly 0 .4 volt .
e . Disconnect t he p recision DC voltmeter and t he
connection between C1001 an d groun d .
%/
28 . A d j ust Calibrator 1 kH z R e p etition R ate
ΝΟΤΕ
If
α
fre q uency counter wit h an accu r acy of at least
0 .1% is available (suc h as Tek tronix 7D14 Digital
Co u nter), it can be used to ad ju st t h e Calibrato r repe-
tition r ate .
α . Install an
am
p
lifier
unit
in b
ot
h vertical com p art-
me n ts an d α
time-base unit in the Α
ΝΟ
R ΙΖ compa r tme n t .
b . Set t he VER TICA L M OD E switc h to A LT .
c . Co n nect t he 0 .4 V CA L I BR ATO R p in j ack to t
h
e
inp u t of one of the am p lifier units .
d . Co nn ect on e-millisecond mar k ers from t he time-mar k
ge n erator to t he ot h er amplifier un it .
e . Set t he amplifier u n its for α mar k er
d
isplay
of abo u t
two divisions a nd α s q uare-wave display
of about four
d ivisions .
f . Set t he time-base u
n
it
for α stable display of b ot h
waveforms in t
h
e
normal, inter n al trigger mode at α
0 .2-millisecon
d /division sweep rate .
4- 1 9

Tektronix 7704A Specifications

General

Brand	Tektronix
Model	7704A
Category	Test Equipment
Language	English