Tektronix 454A - Page 140

P er f or mance C h ec k - 454zyxwvutsrqponmlkjihgfedcbaZYXWVUTSRQPONMLKJIHGFEDCBA ‘ / R 454A
k
.
C HE C K - C R T d i spl ay f or maxi mum op eni ng at t h e

b .
Set t h e medi u m- f r e q u ency gener at or f or ± si x- d i vi si on
cent er h or i zo n t al l i n e of 0 . 52 di vi si on or l ess ( 3 ° or l ess

h
or i zont al di s p l ay at i t s r ef er ence f r e q uency ( 50 kHz) .
ph ase
s
h
i f t ) .
™ . CA L I BR ATI O N - See st ep 35 of A d j ust ment pr o-
ce d ur e .

d . W i t h o u t ch angi ng t h e out p u t ampl i t u d e, i ncr ease t h e
out p u t f r e q uency of t h e gener at or unt i l t h e h or i zont al d e-
f l ect i on i s r e d uced t o 4 . 2 di vi si ons ( - 3 d B poi n t ) .
37 . C h
ec k § B an d wi d t h i n § - ¥ M od e
c . Set t h e gener at or t o i t s var i a b l e f r e q uency posi t i on .
± . Di sconnect t h e du al - i n
p ut co u pl er f r om t h e I NPU T

e . C HE C K - Ou t p ut f r e q uency of gener at or m u st be t wo
C H 2 connect or .

mega h er t z or h i g h er .
N OT E S