Tektronix 576 - Page 128

d . C
HE CK F
O
R -Ste p family with du ration of approx-
imately 9 .2
divisions, 18 .4 ms, fo r α 60 H z line fre qu ency
(22 .0 ms for α 50 H z line fr e q uency) .
f . A d j ust t he test oscillosco p e V ariable Time/Cm con-
trol for α ste p family with t he beginning of t he zero ste p
on
t h
e
first
vertical graticule line of t he test oscillosco pe an d
t
he tent h ste p
on
t he eleve n t h g r aticule line
k . P ress t he Ty pe 576 ST EP /O FF S
E
T
P
OL A
R ITY
IN-
VERT button .
m . Set t he test oscillosco p
e Time/cm switch to 5 ms an d
trigger slo p
e to - .
c . Set t
he
following test
oscillosco pe controls to :
Time/Cm

20 ms
Triggering Slop
e

-
M illivolts/Cm

50
In
p
u t Attenuation

100
e . Set t h e test oscilloscope Time/Cm switc h to 10 ms .
g . P ress t h e Ty p e 576 N O RM R AT E button .
h . C HE CK FOR-Two ste p families per 10 d ivisions
i .
P
ress t
h e
Ty p
e 576 2 Χ R AT E button .
j . C HE CK
F
O R-F o
u
r
ste p families p er 10 d ivisions
Ι . C HE CK F OR -Ste p families inve r ted .
N OT
E
S
P erfo r ma nce Check/Calibration-Type 576
η . Pr ess t he Typ e 576 ST EP F AM ILY SI NG LE button .
P ress it again .
ο . C HE
C K F O R -Single ste p family generate d eac h time
t h
e
SI NG LE
butto n is p resse d .
ρ . P ress t he Ty pe 576 REP ST EP F AM I L Y button an d
release t h
e P
O L
A R ITY I NVER T button .
q . T u rn t h
e
Ty p
e 576 NUMBER
O
F ST EP S switch
t hrough out its range
.
r . C HE C K F O R - Number of ste
p s p
er
family reduce
d
by one each time t h
e
switc
h
is turne d o
ne p
osition
counter-
clockwise .
s .

P
ress
t he Ty pe 576300μ s PUL S E D ST EP S button
and set t
he NUMBER O F ST EP S switc h to 1 .
t . Set t h
e
test oscillosco p
e Time/Cm switch to 50μ s
(Calib r ated ) and
t he M illivolts/Cm switc h to 5 .
υ .
Trigger t he d is p lay on t he CRT .
ν . C HE CK
F
OR -
P ulse d ste p wit h α widt h of 6 d iv, +1 .1
d iv, -0 .3 d iv (300 μ s, +20°/
ο ,
-5°/
ο )
.
ω . P ress t he Ty pe 576 80 μ s PUL SE D ST EP S button .
χ . C HE C K F O R - P ulse d ste p with α wi d t
h
of 1 .6
d iv,
+0 .3 d iv -0 .1 d iv (80 μ s, +20°/ ο -5°/ ο ) .