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4)
Resistance input
-
Q
CRF
VTI30H
,
:
o REF
(No.1)
,
~l'? ~V
-
'~
VTI30H
o REF
(No.2)
.OV
(3)
Rheostat set at a value other than 3kn
FRH
Oktl.
xl
~-
CRF
0
REF
0
o OV
VTI30H
l'J!
I.ak.n.
,...
0(.
The rheostat can be set from 2kn to 5k 51 . However, if the resistance is
too high, it will deteriorate the linearity of setting against the notch selec·
tion as follows:
Frequency
reference
voltage
A ' f - - 3kll
FRH
~
__ -+ ___
10kll FRH
o~----------~------
Notch
8-6
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