Tektronix 2235 User Manual

Ad j ustme n t Pr oce dur e-2235 Service
7 . Ad j ust Delay Dial Timi ng (
R 646 and R 652)

e . AD JU ST- Β H ig h Sp eed Timing
(C713) for 1 time
α . Set :

ma rk er p er division over t he center 8 divisions
.
b . Select 0 .1-ms
time mar k ers from t he time-mar k
gene r ator .
c . Ad j ust t
h
e
Α /
ΒS WP SEP con trol to sepa r ate t h eΑ
and Β Swee
ps .
d . AD JU ST-Delay
Start
( R
646) so t h at t h e2 nd Α -
Swee p time
mar
k
er is inte
n
sified and t h e Β -Swee p time
mar k er's rising
edge starts at t he beginning of t h eΒ Swee p .
e . Set t he Β DEL AY
TIME P OSITIO N d ial to 9 .00 .
f . AD
JU ST-Delay End ( R 652) so t h at t he 10t h Α -
Sweep
time
mar
k
e
r
is intensified and t h e Β -Swee p time
mar ke r 's risi ng edge
starts at t
h
e b eginning of t he Β Swee p .
5-
1
6
H O R IZO N TA L M
OD
E

AL T
Α SE C/DI V
0 .1 ms
Β SE C/DI V 1
μ s
SE C/DI VV a r ia b le

CA Ld etent
Β DEL AY
TIME
P OSITIO
N 1 .00
g . Set t h
e
Β DEL AY
TIME P OSITIO N dial to 1 .00 .
h . R e p eat p
a
r
ts d
t h
roug
h g
u
n
til no furt h er im p rovement
is noted .
8 . A d ju st H ig h -S p ee d Timi n g (C703 and C713)

CH 1 V O L TS/DI V 0 .5 ν
Χ 10 M agn ifier

Off ( k
nob
in)
α . Set :

Α TR IGG ER M ode

N O RM
H O R IZO N TA L M OD E

Α
Α SE C/DI V 0 .1 μ s
b . Select 0 .1-As time mar k ers from t h
e
time-mark
generator .
c .
AD
JU
ST- Α H ig h
Speed
Timing
(C703) for
1
time
mar k er p er divisio n over t h e center
8
divisions
.
d .
Set :
9 . A
dj ust 5- ns Timi ngan d L i n earity (C775an d
C785)
α . Set :
CH 1 VO LTS/DI V 0 .2 V
H OR IZO N TA L M OD E

Α
Α SE C/DI V 0 .05 μ s
Χ 10 M agnifier

On (kn o b out)
b . Select 10-ns time mar k ers from t he time-ma rk
gen erator .
c . Align t he time mar k ers wit h t he vertical graticule li nes
using t h e H orizontal P OSITIO N co n trol .
d . AD JUST-5-ns Timing (C775 and C785 alter n ately)
for one time mar k er every 2 divisio ns over t he cen ter 8 d ivi-
sions of t he magnifie d swee p .
e . C HE C K -Time ma rk ers b etween t he 2nd and 4t h ver-
tical
g r
atic u le lines sh ould b e alig ned wit h i n 0 .05 d ivisio n . If
not,
α
slig
h t com p romise b etween timi n g a nd linearity
s
h
ould be made by read j usti ng t h e 5-ns Timi ng capacito r s
(C775 and C785) .
10 . C h ec k Timing Accu r acy and L i n ea r
ity
α . Set :
b . Select 50-ns time ma rk ers from t h
e time-marke r
generato r .
c . Ad j ust t he Α TR IGG ER LEVEL control
fo
r
α sta b le,
trigge r ed dis p lay .
d . U se t he H orizontal P OSITIO N control
to
alig n
t
h
e sec-
o n d time mar k er wit h t h e seco nd vertical g r atic u le line
.
H O R IZO N TA L M OD E

Β

e . C HE C K -Timi ng accu racy is wit h i n 2% ο (0 .16 divisio n
Α SE C/DI V 0 .2 μ s

at t he 10t h vertical g r aticule line), and linearity is wit h in
5% ο
Β SE C/DI V 0 .1 AS

(0 .1 divisio n over any 2 of t he center 8 divisio n s) .

Tektronix 2235 Specifications

General

Brand	Tektronix
Model	2235
Category	Test Equipment
Language	English