R Aster Display; Inte N Sity M Odulation; Calibrator; Oper Ating V O Ltag E - Tektronix 5440 Instruction Manual

O
p erating Information-5440
R
aster Dis p lay
Dis p lay
Ph
otograp
h
y
Α raster-ty
p
e dis
p
lay ca
n
be use d to effectively increase Α permanent record of t
h
e crt display ca
n
be obtained
t
h
e a p pare
n
t sweep lengt
h
. F or t
h
is type of d is p lay, t
h
e wit
h
an oscilloscope camera system . T
h
e crt bezel of t
h
e
trace is
d
eflecte d bot
h
vertically an d
h
orizontally by 5440 provides integral mou
n
ti
n
g for α Te
k
tronix os-
sawtoot
h signals, and is accomplis
h
ed by installi
n
g α 513-
cillosco
p e camera . T
h
e instructio
n
ma
n
uals for t
h
e
series time-base u
n
it i
n th
e left vertical compartment, as Tektronix oscilloscope cameras include complete i
n
struc
well as one i
n
t
h
e
h
orizo
n
tal com
p
artme
n
t . N ormally, t
h
e tio
n
s for obtaining waveform
ph
otograp
h s .
unit in t
h
e vertical compartment s
h ould be set to α slower
sweep rate t
h
an t
h
e one i
n th
e
h
orizontal com p artment ;
t
h
e number of
h
orizo
n
tal traces in t
h
e raster
d
e
p
en d s upon
O
PER
ATI
N
G
V
O
L
TAG
E
th
e ratio between t
h e two swee p rates . Information ca
n
be
d
is p laye d on t
h
e raster using t
h
e
E
xt I
n
tensity I
n
p ut to
p
rovide intensity modulation of t
h
e d is p lay . T
h
is type of
raster
d
is
p
lay ca
n
be used to provi
d
e α television-ty p e
d is p lay .
T
h is instrument is designed for o
p
eration from α
power source with its n eut
r
al at or near eart
h
I
n
tensity
M
odulation
(groun
d ) potential, and wit
h
α se
p
arate safety-eart
h
conductor. It is not intended for operation from two
I
n
te
n
sity (Z-Axis) mo d ulatio
n
ca
n
be use d to relate α
phases of α multί -p
h
ase system, oracross t
h
e legs of
t
h
ir
d
item of electrical p
h
enomena to t
h
e vertical (Y-Axis)
α single-p
h ase, three-wire system .
an
d
th
e
h
orizontal (X-Axis) coord i
n
ates wit
h
out affecting
t
h
e waves
h
ape of t
h
e
d
isplaye
d
signal . T
h e Ζ -Axis
modulati
n
g sig
n
al, a
pp
lie
d
to t
h
e ΕΧΤ I
N
T
EN
SITY I
NPU
T,
5400
P
anel (Dust Cover)
R
emoval
c
h
a
n
ges t
h
e i
n
te
n
sity of t
h
e d is
p
laye d waveform to
p rovi d e t
h
is type of display . T
h
e voltage amplitude
re q uire
d for visible trace mo d ulation d e
p
e
nd s on t h
e
W A
RN
I
N
G
setti
n
g of t
h
e I
N
T
EN
SITY control . About +5 volts will turn
on t
h
e d isplay to α
n
ormal brig
h
t
n
ess level from an off Dangerous potentials exist at
several
p
oints
level, a
n
d about -5 volts will turn t
h e d is p lay off from α th
roug
h
out t
h e oscilloscope .
Wh
en t
h
e instrument
n
ormal brig
h
tness level . "Gray scale" intensity mo d ula- must be operated wit
h th
e cabinet
p
a
n
els remove
d
,
tio
n
ca
n
be obtaine
d
by a
pp
lyi
n
g sig
n
als betwee
n
t
h
ese do not touc
h
ex
p
osed connections or com
p onents .
levels . M aximum safe input voltage is ±50 volts .
U
sable Some transistors
h
ave voltage prese
n
t an t
h
eir
fre
q
ue
n
cy range of t
h
e Ζ -Axis circuit is do to two cases . Disconnect power before cleaning t
h
e instru-
mega
h
ertz . ment or replacing parts .
Time mar
k
ers ap
p
lie
d
to t
h
e ΕΧΤ I
N
T
EN
SITY I
NPU
T
provide α direct time reference on t
h e d is p lay . W it
h
uncalibrate
d h
orizo
n
tal swee p or Χ - Υ o peratio
n
, t
h
e time
mar
k
ers provide a means of rea d i
n
g time d irectly from t
h
e
dis p lay . H owever, if t
h
e mar
k
ers are not time-relate
d
to t
h
e
d is p layed waveform, α si
n
gle-swee p dis p lay s
h
ould be
used (for inter
n
al sweep only) to provi
d
e α stable d is
p
lay .
Calibrator
Th
e i
n
ter
n al cali
b
rator of t
h
e 5440 p rovides α co
n
-
venient sig
n
al source for c
h
ec
k
ing basic vertical gain and
swee
p
timing . T
h e calibrator signal is also very useful for
a
dj
usting p robe compe
n sation, as d escribe d in t
h
e p robe
i
n
str
u
ction manual . T
h
e out
p
ut s q uare-wave voltage is 400
millivolts, wit
h
in 1 ο/ο , a
n
d t
h
e s
q uare-wave curre
n
t is 4
milliam
p eres, wit
h
i
n
1 ο/ο . T
h
e frequency of t
h
e s
q
uare-
wave signal is twice t
h
e power-line frequency . T
h
e sig
n
al
is obtained by cli p
p
ing t
h e p robe to t
h
e loop .
T
h
e cabinet p a
n els ( d ust covers) of t
h
e 5400-series
oscilloscope are
h
el
d
in
p
lace by slotted fasteners . To
remove t
h
e p anels, turn eac
h fastener countercloc
k
wise α
q uarter tur
n
wit
h α large screwdriver, coin, or similar
d evice . T
h
en t
h
e panels ca
n
be lifted away . T
h
e instrument
s
h
oul d be operate
d
wit
h th
e p a
n
els in p
lace to protect t
h
e
i
n terior from dust, and to elimi
n
ate s
h
oc
k h
azar
d
.
Conductor
TA
BLE 1-1
P
owe
r
Cor d Co
n
ductor Identificatio
n
U
ngrou
n
de
d
(
L
ine)
Grounded (
N
eutral)
Grounding (
E
art
h
ing)
Col
or
T-Alterna te Color
B rown B l ac
k
B lue
Wh
ite
Green-Yellow Gree
n
-Yellow