Tektronix 576 - Page 121

P
erforma
n ce C h ec k /Calib r atio n -Ty p e 576
b .
Set t h e Calibration F ixture
F unction switc h to H oriz
Atten
C h ec k .
c . P ress t h e Z ER O button and
position t h e s p ot to t h e
intersection of t h e zero vertical and
h orizontal graticule
lines
.
d . Turn t h e Ty p e 576 VA R
IA BLE CO LLE CTO R S UP-
PL Y control fully cloc k wise
.
e . C HE CK F O R -S p ot on tent h
vertical gratic u le line
±0 .3
d ivision (±3% ο ) .
f . Turn t h e Ty p e 576 H O R IZO N TA
L switc h and t h e
Calib r ation F ixtu r e H orizontal switc
h toget h er t h roug h out
t h eir ranges .
g . C HE CK F O R -Spot on tent
h ve
r
tical g r atic u le line
±0 .3 division (±3%) for eac
h p osition of t he H O R IZO N -
TA L switc h exce p t t h e 200 CO
LLE CTO R and ST EP G EN
p ositions . In t he 200 CO LLE CTO R
position t he s p ot s h ould
be in t he ce n ter vertical line ±0 .15 d ivision (±3%)
. In the
ST EP G EN p ositio n , 11 spots
will be d is p laye d h orizon-
tally . T he elevent h s p ot s
h
o
u l d be on t h e tent h ve r tical
graticule li n
e
±0 .4
d ivision (±4% ο ) . N ote : t he h orizontal
base in
p ut im pedan ce is automatically ch ec k ed by t
h
is
p
ro-
ce d ure .
19 . C h ec k V ertical Dis p lay
Accuracy
α . Set t h
e
following Ty p
e 576 co n t r ols to :
VA RIA BLE CO
LLE CTO R

F ully Countercloc k wise
S UPPL Y
MAX
PEAK VO L TS

15
VER TICA L 2 Α
H O R IZO N
TA L 200 V CO LLE CTO R
PUL SE D ST
EP
S

300 μ s
ST EP
F
A
M
I
L Y

SI NG LE
b .
Set t he Calibration F ixture Fu
nction switc h to V e r t-
ical
Current C h ec k .
c .
P ress t he ZERO button an d p osition
t he s p ot on t he
zero h
orizontal line .
d . Turn t
he VA R IA BLE CO LLE CTO R S UPPL
Y control
fully cloc k wise
.
e . C HE C K F O R -S p ot on fift
h h orizontal graticule line
±0 .15 d ivision (±3% ο ) .
f . Tu r n t h
e
Ty p
e 576 VER TICA L switc h and t h
e
Cali-
b r ation F ixture V ertical
switc h , toget h er, t h roug hout t h eir
ranges .
g . C HE
CKF O R -Spot on tent h h orizo n tal graticule
line
±0 .3 d ivision
(±3% ο ) for all p ositions of t he VER TICA L
switc
h . (T he ST EPS butto n may be p resse d w hen t h
e
Cali-
bration
F ixture V ertical switc h is i n t he 10 mA p
osition .)
5- 1 4
h .
Set t he following Type 576 controls to :
VER TICA
L 5 μΑEM ITT ER
M
OD
E

LE A K AG E
i . Set t h e Calibration F ixture V ertical control to 50 μΑ .
j . Tur n t he Ty pe 576 VER TICA L switc h and t
he Cali-
bration
F ixture V ertical switc h , toget h er cloc k wise
t h roug h out t h eir ranges .
k . C HE C KFOR-Spot on tent h h orizontal graticule line
±0 .3 division ±1
ηΑ (±3% ±1 ηΑ ) for all p ositions of t he
Ty pe 576 VER
TICA L switc h exce p t t he 1 ηΑ , 2 ηΑ and 5
ηΑ p ositions . In
t h ese positions t he accuracy is with in 0 .5
division ±1 ηΑ
(5°/ ο ±1 ηΑ ) .
Ι . Set t
he following Type 576 cont r ols to :
VER TICA
L ST EP G EN
V
A R
IA BLE CO LLE CTO R

F ully Counte r cloc
k
wise
S UPPL Y
ST
EP F AM I LY

REP
m .
C
HE CK F OR -11 sp ots d isplaye d vertically wit
h
t
h e
elevent h s p ot on t he tent h h orizontal graticule
line
±0 .4
d ivision (±4% ο ) .
20 . C h ec k H orizontal an d V ertical Dis p
layed N oise
α . T ur n off t h
e
Ty p
e
576 an d
remove t he Cali b ration
F ixture .
b . Install t h e Stan d ar d Test F ixture in t
he
Ty p
e 576 and
turn on t he instrument .
c . Set t he following Ty p e 576 controls to :
VER TICA L 2 Α
DIS PL AY O FF S ET Selector

H O R IZ Χ 10
C EN T
ERL I NE VA LUE

5
H O R IZO N TA L

.05 V CO
LLE CTO R
POLARITY

AC
M OD E

NO RM
ST EP F AM I L Y

SI NG LE
d . P osition t h e s p ot on t he CR T .
e . C
HE
CK F O R -S p ot no greater t han 0 .6 d ivisio n h ori-
zontally (3
mV pea k to peak ) .
f . Set t he following Ty p
e 576 cont r ols to :
VER TICA
L 1 μΑ
DIS PL AY O
FF SE T Selecto r

VER TΧ 10
H OR IZO N TA
L 200 V CO LLE CTO R
g . P osition t he s p ot on t he CRT . U se t h e C EN T ERL
I
NE
VA
LUE switc h if n ecessa r y .
h . C HE C K F OR -S p ot no
g r eate r t h an 0 .5 d ivisions
vertically (50 ηΑ p ea k to peak ) .
i . Set t
he Ty p e 576 M OD E switc h to LE A K AG E .