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(NOTE
11
INPUT
SIGNAL
DOWN
CONVERTER
t26 VOC
TO
SUITCHES
I
SIGNAL DIRECT PATH
I
SIGNAL DOWN CONVERT PATH
8
5>1
I
c23
S2
RF INPUT SWITCH
0
1 CI
(I
LO
AMP
OUT
PATH
LO AMPLIFIER IN PATH
GND
1-
T
NOTES
1.
ALL CIRCUITRY EXCEPT
W12
IS
ENCASE0 IN A R.F.I.
SHIELOING MODULE.
2
-9
bhO
,110
ARt
PAHT
CF
"12
b1D
111
2ESPFC'IVt.l. Ah0 CbhhOT
BE
OROEREO
SFPARA1i.l
3.
INPUT VOLTAGE TO
LO
AMPLIFIER
CANNOT EXCEED
t51
(0.6V)
OF
t12
VdC
SUPPLY.
LO AMP OPT
001
011 021
5.
SEE FIGURE
0
FOR
HELP IN COMPONENT
LOCATION AND IDENTIFICATION
I
ONLY)
I
I
(OPTION
021
ONLYI
I
K2
T
I
'I
-
BOO
HHz
I
=z
e-----
AT1
340
FLl
LOU
-
ATTENUATOR
PASS
FILTER
IPTIONAL LO AMPLIFIER AND SWITCH
L---
CR1
AMPLIFIER
18-26
6H2 (NOTE
31
I
f-
IF
15d0
'L
I
FI
ER
D
(OPTIONS
001
I
AND
011
ONLYI
I
[NOTE
4)
ss2
Figure
12.
INPUT SIGNAL DOWN CONVERTER
(Schemetlc
Diagram
for
Options
001,
Ol1,and
021)
41