Tektronix 2213 - Page 74

T
hen r eturn t h e V O L TS/DI VV aria b le cont r ol to the CA L
d
ete n
t an d
fi n
is
h t h e ch ec k .
5 . C h ec
k
In
put
Cou
p ling
α . Set bot
h V
O
L TS/DIV switc hes to 50-m
V .
b . Set t he calibration
generato r to produce α
200-m V
sta n dard-am
p litude sig n al .
ε . P osition t
h
e b ottom
of t he sig n al on t h e ce n ter h ori-
zontal g r atic u le
li n e
u
sing
t
he
C
h a nn el 2 P OSITIO N cont r ol .
d . Set t he C h annel 2 i np ut coupling switc
h
to AC .
e . C HE CK -Dis p
lay is centere d about t he cente r h ori-
zontal
gratic u le line .
f . Set t h e VER TICA L M OD E switc h to CH 1 and
m ove
t
h e i nput signal fr om t he CH 2 O R Υ i npu t co
n
nector
to
t h e CH 1 O R Χ in pu t con n ecto r .
g . Repeat parts ε t h ro ugh e for C
h annel
1 .
6 . C h ec k A LT an d C H O
P Operation
α . Set :
VER TICA L M OD E

BOTH-ALT
AC-G N D-DC ( both )

G ND
S EC/DI V 10 ms
b . C HE C K -Disp lay
alter n ates between t h e C han nel 1
and C h annel 2
d
is p lays
.
If
n ecessary, u se b oth P OSITIO N
controls
to separate t he two traces .
ε . Set VER TICA L M OD E to CH O P .
d . C HE C K -C h annel 1 an d C h annel 2 dis p lays are b ot
h
d is p laye d simultaneo u sly .
REV NOV 1981
τ
Ad j ustment
P roced ur e-2213 Service
b . Ce
n
te r
t h e t r ace
on
t he ce n ter h orizontal graticule
li ne using
t h e
C
h annel 1 P OSITIO N con trol .
ε . R otate t he CH 1 V O L TS/DI VV aria b le co
n
t
r ol
co un te r cloc k wise t h ro ugh its f u ll r a n ge
.
d . C HE C K -T h at t he trace d oes
n
ot s
h ift more t h an 2 .5
divisions .
e . Ret u rn t h e C H 1 V O L TS/DI VV ariable control to
its CA L
dete n t .
f . Set t h e VER TICA L M OD E switc h to CH 2 .
g . R epeat p arts
b t hr oug h e for Ch a nn el 2 .
8 . A d j ust Invert Bala
n ce (11264)
α . Set t
h
e C
H
2
V
O L
TS/DI V switc h to 20 m V .
b . Center t he t r ace on t he ce n te r h orizontal gratic
u
le
li ne u sing t h e Ch a nn el 2
P
OSITIO
N control .
c . Pu s h in th e I NVER T bu tton .
d . AD JU ST-Invert ΒαΙ ( R 264) to position
t he trace
on t he center h orizo n tal graticule
line
.
e . R etur n t he I NVER T b utto
n
to N
o r mal ( bu tto n out) .
f . R e p eat p arts ε t
h ro u g h e u n til t h ere is no trace s h ift
w h en switc h i
n g t h e
I
NVER T bu tton b etween Invert an d
No r mal .
9 . A d j ust Trigger Bala n ce (11154)
α . Set t h e ΙΝΤ switc
h
to C H 2
.
5-9
7 . C h ec k VO L TS/DI
V
S h ift
V ariable Control Trace
b .
Co n nect t h e d igital voltmeter low lead to
ch assis
ground (
ΤΡ 501) and t h e volts lea d to p in 16 of U 421 ; note
t
h
e
voltage rea d ing for use in p art d .
α . Set :
ε . Set t
h e Ι
NT
switc h to CH 1 .
VER TICA L
M
OD
E C H 1
V O L TS/DI
V ( b ot h ) 2 mV
AC-G
N D-DC ( b ot h ) DC
d . AD JU ST-C
h
1/C
h
2 B
ala n ce ( R 154) so t h at t he
S
EC/DI V 0 .2
ms voltage r ea d
i n g is t h e same as t h at o b tai ned in part b .