Tektronix 7704A User Manual

Calibration Interval
To ensu re instrument accuracy, c h eck t he calibration of
the 7704 Α every 1000 h ou rs of op eratio n , o r every six
mo n t h s if use
d infre q uently .
B
efore
com
p lete
cali
b ration,
th oroug h
ly
clean and i
n
spect
t h
is
instrume n
t .
Te k tronix F ield Services
Te k tronix, Inc . p rovi d es com p lete instr um ent re p air an d
recali b ration at local F iel d Service Centersan d t he F actory
Service Center . Co n tact your local Te k tronix F ield Office
or re p resentative for f u rt h er i n fo r mation .
U
sing T h is P roce d ure
General . T h is p r ocedure p rovi d es several features to
facilitate cali b ratio n of the 7704 Α . T h ese are :
I
n dex . An
i n dex is give n prece d i ng t he Calibratio n
proced ure to ai d i n locati ng ste p s .
P erforman ce C h ec k . T he p erforma nce of t h is i nstrume n t
can b e ch ec k
e
d by p erforming only t h
e
V ste
p
s . T h
e
V
preceding α step in d icates t h at p erformi ng t h is step ch ec k s
t he instrume n t against t he tolera n ces liste d as α P er-
forma n ce R e q uiremen t (see Specificatio n section in 7704 Α
O p erators Manual) . L imits and tole r ances given i n other
c h ec k ste p s are calibration gui
d
es and s
h
oul
d
not be
inter
p
reted as instrume
n
t specifications . Operator front-
panel ad ju stmen ts are a dj uste d as part of t he P erformance
C h ec k p rocedure .
P artial Calibration . Α p artial calibratio n is ofte n d esir-
a b le after re p lacing compo n ents, or to to
uc
h
up
t h e
ad ju stment of α portion of t he inst
ru
me n
t
b etwee
n ma j or
recali b rations . -To calibrate only pa
r
t of t he i
n
strume
n
t,
start wit h t
h
e nearest Equ ipment Re qu ire d list p r ece d i ng
t
h e d esire dp ortion .
To
p revent
u
n
necessary
recal
ί b ration of
ot h er p arts of t he i n str u ment, re-ad ju
st only
if t he tolera n
ce
given in t he C HE CK- p art of t he step is not met . If
re-ad j ustme n t is n ecessary, also c h eck t he calibratio n of any
ste p s liste d in t he I N T ER ACTIO N - pa r tof t h e ste p .
Complete Cali b ration P rocedure . Com p letio n of each
ste p in t h e Cali b ratio n proced u re i n sures t h at t h is instr u -
me n t is correctly a d ju ste
d
and pe
r formi
ng wit
h in
all
given
tolerances .
CA L I BR ATIO N
Sectio
n
4-7704 Α Service
TE ST E QU I PMEN T RE QU I RE D
T he following test e q ui p ment and accessories, or e qu iva-
lent, is re q uired for complete cali b ration of t h e 7704 Α .
S p
ecificatio n s given for t he test e qu i p ment are t he min i-
mum necessary for accurate cali b ratio n . Th erefore, t he
specifications of any test eq uipme n t use d m u st meet or
exceed t he liste d specificatio n s . All test e qu i p me
n
t is
assume d to b e correctly cali br ate d an d op erati ng
with in t he
liste d s p ecifications . Detaile d op erating i n st
r uctions for t he
test eq uipment are n ot given in t
h
is p roce
d
u
r e . R efer to t he
i n struction ma n ual for t he test e q
u
ipment if more
i n fo r -
mation is need ed .
Special Calibration F ixtures
Special Te k tronix cali b ratio n fixtures are use d i n t h is
p roce d ure only w h ere t hey facilitate instrume n t cali b ratio n .
T h ese calibratio n fixtures a r e availa b le
f
r om Te k tro n ix, Inc .
Or d er b y part n umbe r t h ro ugh your local Te k tro n ix F iel d
Office o r r e p resentative .
Calibration
E q
ui p ment Alternatives
All of t he liste d
test
equi p
ment, or its eq uivale n t, is
re q
u
ired to com p letely c h ec k a nd a dju st t h is instr u me n t .
T
he
Calibratio n p roced u re is base d on t he fi r st item of
eq uipme n t give n
as an example of a pp licable e q ui p ment .
Wh en ot he r e q uipme n t
is su
b
stitute
d ,
control setti n gs o r
cali b ration setu p may n eed to be altere d to meet the
re
q
uirements of t he su b stitute d e q ui p ment . If t he exact
item
of test e qu i p ment given as an example in t he Test
E qu i p me nt list is n ot availa b le, first ch ec k t he
Speci-
ficatio n s colum n carefully to see if any ot h er eq ui p me nt is
availa b le w h ic h migh t suffice . T hen ch ec k t he U sage
col u mn to see w h at th is item of test equipmen t is used for .
If used for α c h ec k or a dj ustment w h ic h is of little o r no
imp ortance to your measureme nt requirements, the item
and corres pon di n g step(s)
can
b e d elete d .
T he following p roce d ure is written to com p letely c h eck
and ad j ust t he 7704 Α to t h e
P
e
r
forma
n
ce R e q uireme
n
ts
liste d i n t he O p erators Manual and to allow
interc h an gea-
bility of 7000-series p lug-in u
n its between 7000-se r ies
mainframes
with
out
t he n ee d to com p letely r ecali b rate t h e
instruments eac
h time . If t he a pp lications for w h ic h you
will use t h e 7704 Α d o n ot r e qu ire t h e f u ll availa b le

Tektronix 7704A Specifications

General

Brand	Tektronix
Model	7704A
Category	Test Equipment
Language	English