Tektronix 454A - Page 123

Cont r ol Set t i ngs

g .
C HE C K - C h ange t h e C H 2 V O L TS/ DI V swi t c h f r om
P r eset i n st r u ment cont r ol s t o t h
e set t i ngs gi ven u n d er

10
m V t o 2 m V . Tr ace s h o u l d not move mor e t h an 0 . 1
P r el i mi nar y Cont r ol Set t i ngs .
d i vi si on ver t i cal l y
at eac h st e p .
5 . C h ec k C h annel 1 and 2
St e p At t enuat or
B al ance
t h e C H 1 P OSI TI O N cont r ol .
c . C HE C K - C h ange
t h e C H 1 V O L TS/ DI V swi t c h f r om
10 m V t o 2 m V . Tr ace s h o
u
l d
not move mor e t h an 0 . 1
d
i vi si on ver t i cal l y at eac h st e p .
d . I f t h er e i s t r ace s h i f t , ad j u st
t
h
e C H 1 ST EPzyxwvutsrqponmlkjihgfedcbaZYXWVUTSRQPONMLKJIHGFEDCBA ‘ ¤¤• •
B A L ad j u
st ment ( on f r ont p anel ) f or
no
t r ace
s
h i f t
as t h e
C H 1 VO L TS/ DI V swi t c
h i s c h ange d f r om 10 m V t o 2 m V .
Eq ui p ment R e q ui r e d
1 . H i g h - f r e q uency Const ant - Am p l i t u d e Si gnal Gener at or

6 .
G R 50 © I n- Li ne Ter mi nat i on
( 067- 0532- 01)
2 . M e d i um- F r e qu ency Const ant - Am p l i t u d e Si gnal
Gener at or ( Ty p e 191)
3 . St an d ar d Am p l i t u de Cal i br at or ( 067- 0502- 01)
4 . 5 N anosecond G R Ca b l e
5 .
Two G R 10
§
at t en
u at or s

10 .
Thr ee- I nch
Scr ew d r i ver
± . P
osi t i on t
h
e t r ace t o t h e ce n t er h or i zont al l i ne wi t h
b .
C h ange t h e I nput Cou p l i ng swi t c
h es t o G N D .
NO ¤•
U se t h e BANDWI DTH- BEAM F I N
D ER swi t c h t o
l ocat e
t h
e
t r ace i f i t i s def l ect ed of f scr een w h
en
swi t c h i ng t o 5 m V
or
2
m V .
e . Set t h e M OD E swi t c h t o C H 2 .
VER TI CA L SYST EM C HE C K
7 . D u al - I n p ut Coupl er
8 . 18- I nc h 50 © BN C Cabl e
9 . 42- I nc h 50 © BN C Ca b l e
h . I f t h er e i s t r ace s h i f t , ad j u st t h e C H 2 ST EP ‘ ¤¤• •
B A L ad j u st ment ( on f r ont pa n el ) f or no t r ace s h i f t as t h e
C H 2 V
O
L TS/ DI V
swi t c h i s c h anged f r om 10 m V t o 2 m V .
6 . C h ec k C h annel 1 and 2 Gai n
P er f or mance C h ec k
- 454 ‘ / R 454A
± . C h ange t h e C H 1 an d CH 2 V
O
L
TS/ DI
V
swi t c h es t o
20 m V a n d t h e M OD E swi t c h t o C H 1 .
b . Connect t h e st an d ar d am p l i t
u
d
e cal i b r at or
( 067- 0502- 01) o u t p u t connect or t o t h e I NPU T C H
1 an d
I NPU T C H 2 connect or s t h r o u g h ± 42 i nc h 50 © BN C ca b l e
an
d
±
d
ual - i n p ut cou p l er .
c . Set t h e st an d ar d am p l i t u de cal i b r at or f or ±
0 . 1- vol t
s q uar e- wave o u t p u t .
d . C HE C K - C R T d i spl ay f or f i ve d i vi si ons of d
ef l ect i on .
e . I f necessar y,
a
d
j u st t h e C H 1 GAI N a d j u st ment ( on
f r ont p anel ) f or exact l y
f i ve d i vi si ons of d ef l ect i on .
f . Set t h e M OD E swi t c
h t o ADD .
g .
Pul l t h e I NVER T swi t c h .
f . P
osi t i on t h e t r ace t o t h e cent er
h or i zont al l i ne wi t h
t h e C H 2 P
OSI TI O N cont r ol .

h . Cent er t h e d i s p l ay wi t h t h
e C
H
2
P
OSI TI O N co n t r ol .
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