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Tektronix 454A - Page 43

Tektronix 454A
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F
i
r st -
d
i vi si o
n
N
i
n
t
h
-
d
i vi si o
n
ver t i cal
l i
n
e
v
er t i cal
l i
n
e
Ti me
m
easur eme n
t
ar ea
F
i g
.
2- 13
.
Ar ea
of
gr at i c
u
l e
u
se d
f or
acc
u
r at e
t i me
meas
u
r eme n
t s
.
To
use
t
h
e
magni f i ed
swee
p
,
f i r st
move
t
h
e p
or t i o
n
of
t
h
e
d
i s
p
l ay
w
h
i c
h
i s
t o
be
expande
d
,
t o
t
h
e cent er of
t
he
gr at i cul e
.
T
h
en
set
t
h
e
M
AG
swi t c
h
t ozyxwvutsrqponmlkjihgfedcbaZYXWVUTSRQPONMLKJIHGFEDCBA
§
10
.
T
h
e F
I
NE
posi t i on cont r ol
can
b
e
ad
j
ust ed t o
move
t
h
e
mag
n
i f i e
d
p
or t i on
t o
t
h
e
desi r e
d p
osi t i on
.
T
h
e
l i g
h
t
l ocat ed
bel ow
t
h
e
M
AG
swi t c
h
i s
on
w
h
enever
t
h
e
magni f i er
i s
on
.
Oper at i ng
I nst r uct i o
n
s- 454
‘
/
R
454A
Wh
en
t
h
e
M
AG
swi t c
h
i s
set
t o
§
10,
t
h
e
swee
p
r at e
i s
det er mi ned
by
d
i vi
d
i ng
t
h
e
¤™œ•
/ DI
V
swi t c
h
set t i ng
by
10
.
For
exam
p
l e,
i f
t
h
e
¤™œ•
/ DI
V
swi t c
h
i s
set
t o
. 5
¼
s,
t
h
e
magni f i e
d
swee
p
r at e
i s
0
. 05
mi cr oseco
n
d/ di vi si on
.
T
h
e
magni f i ed
swee
p
r at e
must
be
used
f or
al l
t i me
measur ement s
w
h
en
t
h
e
M
AG
swi t c h
i s
set
t o
X10
.
The
magni f i e
d
swee
p
r at e
i s
cal i br at e
d
w
h
en
t
h
e
UN
CA
L
‘ O
R
’
l i g
h
t
i s
of f
.
’
( Del ayed
Swee
p
)
T
h
e
’
swee
p
(
d
el aye
d
swee
p
)
i s
o p
er abl e
i n
t
h
e
‘
™• ¤• •
D
UR
I
N
G ’
,
’
( D
EL
AY
E
D
S
WEEP) ,
a
nd
M
I X
E
D
p
osi t i ons
of t
h
e
H
O
R
I Z
DI S
PL
AY
swi t c
h
.
T
h
e
‘
sweep
r at e
al ong
wi t
h
t
h
e
DELAY- TI ME
MUL
TI
PL
I
ER
d
i al
d
et er -
mi nes
t
h
e
t i me
t
h
at
t
h
e
’
swee
p
i s
d
el ayed
.
Sweep
r at e
of
t
h
e
d
el aye
d
p
or t i on
i s
d
et er mi ne
d by
t
h
e ’
¤™œ•
/ DI
V
( D
EL
AY
E
D
S
WEEP)
swi t c
h
set t i ng
.
I n
t
h
e
‘
™• ¤• •
D
UR
I
N
G ’
p
osi t i o
n
,
t
h
e d
i spl ay
wi l l
ap p
ear
si mi l ar
t o
F
i g
.
2- 15
‘
.
T
h
e
amount
of
d el ay
t i me
b
et ween
t
h
e
st ar t
of
‘
sweep
and
t
h
e
i nt ensi f i e
d p
or t i on
i szyxwvutsrqponmlkjihgfedcbaZYXWVUTSRQPONMLKJIHGFEDCBA
"
“ ¹
'
r
¹ ¯ ¹ ¯ ¹ µ
i
r
i
r
7
MENOMONEE
MOMMEMMOMMI
F
i g
.
2- 15
. (
‘
)
‘
™• ¤• •
D
UR
I
N
G’
di spl ay
(
‘
¤™œ•
/ DI
V
,
. 5
ms
;
’
F
i g
.
2- 14
.
Ope
r
at i on
of
sweep
magni f i er
.
¤™œ•
/ DI
V
,
50
¼
s) ,
™’
)
’
( D
E
LAYE
D
S
W
EEP)
di spl ay
.

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