Tektronix 2213 - Page 73

Ad ju stment Pr ocedu r e-2213 Service
2 . Ad j
ust Atten u ator
Step B alance
(11138 and R 238)
α .
Set b ot h
AC-G
Ν
D-DC
switc h es to GΝD .
b . Set t h e C H 1 VO L TS/DI V switc
h
to 10 m V and
p osition
th
e
trace on t h e center h orizo n tal g r aticule li n
e
usi
ng
t
h e
C
h
a
nn el
1
P
OSITIO
N
co
n trol .
ε . C han ge t he CH 1 VO L TS/DI V switc h to 2 m V .
d . AD JU ST-C
h
1 Ste p ΒαΙ ( R 138)
to set t he
trace on
t he ce n ter h o r izontal graticule line .
e . R e p eat p a r ts b t hr o ugh d u n til t h ere is no trace s h ift
w hen ch angi n g t
h
e CH 1 VO L TS/DI V switc h from 10 m V
to 2 m V .
f .
C
h
a
n
ge t h e
VER
TICA L M OD E switc h to CH 2 .
g . R ep eat parts b t h ro ugh e for C h annel 2, a dju sti ng
C h 2 Ste p ΒαΙ ( R 238) in ste p d .
3 .
A
d j ust Attenuator Χ 10 B alance
(11146 an
d
R 246)
α .
Set t he
C
H 2 V
O
L
TS/DI
V switc h to 20 m V .
b . P osition t he t r ace on t h e cente r h orizontal gratic u le
line using t he C hann el 2 P OSITIO N control .
5-
8
ε . C h ange the CH 2 VO L TS/DI V switc h to 10 m V .
d . AD JU ST-C h 2 Χ
10
ΒαΙ ( R
246)
to set t he trace
on
t he center h orizontal graticule li ne .
e . R e p eat pa r ts α t h roug h d un til t he r e is no trace s h ift
w h en c h angi n g t h e C H 2 VO L TS/DI V switc h from 20 mV
to 10 m V .
f .
C
h a n ge t h e VER TICA L M
OD
E switc h to CH 1 .
g . R epeat pa
r
ts ; α t h ro ugh e for C h an n el 1, a d j usti n g
C h 1

X10 ΒαΙ ( R 146)
i n
step
d .
4 . C h ec k Deflection Accuracy a nd V ariable R
a
n ge
α . Set :
C H 1 V
O L TS/DI V 2 m V
C H 2 V
O L TS/DI V

10V
AC-G N
D-DC
(bot h )

DC
b
.
C HE C K
-Deflection
accuracy is wit
h
i
n
t h
e
limits
given in Ta
b
le 5-3
for
eac
h
C
H
1 VO L TS/DI V switc h set-
ti ng and corresponding sta
n
dar d -amplitude signal
.
Wh e
n
at t h e 20-m
V
VO L TS/DI
V
switc h setting, r otate t
h
e C H 1
V O L TS/DI V V aria b
le control f u lly cou
n te r cloc
k wise
and C HE C K t h at t
h
e d is p lay d ecreases to 2
d
ivisions or less .
T hen r eturn t h e VO L TS/DI VV ariable con t
r
ol to t he CA L
d etent and con tin ue wit h t he 50-m V ch ec k .
Table 5-3
Deflectio n Acc u racy L imits
ε . Set t he VER TICA L M OD E switc
h
to CH 2 an d
m ove
the cable from t h e C H 1 O R Χ in pu t connector to t
h
e
C H 2 O R
Υ
in p
ut conn ector .
d . C HE C
K
-Deflection accuracy is with in t h e limits
give
n
in Table 5-3
for each
C
H
2
V
O L TS/DI
V switc h set-
ting an d corres p
ondi ng
sta
nd
ard-am
p
litu
d e signal . P e r form
the ch ec k s f r om
t h
e
b
ottom to t
h e
top
of
Ta
b le
5-3
to
avoi d un necessary
switc h -position c h
a
n ges . Wh en
at
t h e
20-m V VO L TS/DI V
switc h
setti
n g,
r
otate t he
C
H 2
V O L TS/DI VV aria b le con t r ol fully co u ntercloc k wise
an d
C HE C K t h at t
h
e d isplay d ecreases
to
2
d
ivisio
n
s or
less .
REV N
O
V
1981
V O L TS/DI V
Switch
Setting
Standard
Am p lit ude
Signal
V e r tical
Deflection
(Divisions)
3% Accuracy
L imits
(Divisions)
2 mV 10 mV 5 4 .85to5 .15
5mv 20 mV 4 3 .88to4 .12
10 mV 50 mV 5 4 .85to5 .15
20 mV 0 .1 V 5 4 .85 to 5 .15
50 mV 0 .2 V 4 3 .88 to 4 .12
0 .1 V 0 .5 V 5 4 .85to5 .15
0 .2 V 1 V 5 4 .85 to 5 .15
0 .5 V 2 V 4 3 .88to4 .12
1 V 5 V 5 4
.85 to 5 .15
2 V 10 V 5 4 .85to5 .15
5 V 20 V 4 3 .88 to 4 .12
10 V 50 V 5 4 .85to5 .15