HP 11793A Operating And Service Manual page 49

(NOTE 11
INPUT
SIGNAL DOWN CONVERTER
t 2 6 VOC T O SUITCHES
I
S I G N A L DIRECT PATH
I
S I G N A L DOWN CONVERT PATH
8
5 > 1 I
c 2 3
S2
RF INPUT SWITCH
0 1
CI
( I
LO AMP OUT PATH
LO A M P L I F I E R I N PATH
GND
1 -
T
NOTES
1 . A L L C I R C U I T R Y EXCEPT W12
IS
ENCASE0 I N A R . F . I .
S H I E L O I N G MODULE.
2 - 9
b h O ,110 A R t PAHT
CF
" 1 2 b 1 D
1 1 1 2 E S P F C ' I V t . l . A h 0 CbhhOT
BE
O R O E R E O
SFPARA1i.l
3 . I N P U T VOLTAGE TO
LO
A M P L I F I E R
CANNOT EXCEED t 5 1 ( 0 . 6 V ) O F
t 1 2
V d C SUPPLY.
LO AMP OPT
001 0 1 1 0 2 1
5 . SEE FIGURE 0 FOR HELP I N COMPONENT
LOCATION AND I D E N T I F I C A T I O N
I
ONLY)
I
I
(OPTION
0 2 1
ONLYI
I
K 2
T
I
' I
-
BOO
HHz
I
= z
e-----
A T 1 340
F L l
LOU
-
ATTENUATOR
PASS
FILTER
IPTIONAL LO AMPLIFIER AND SWITCH
L---
C R 1
A M P L I F I E R
18-26
6H2 (NOTE
31
I
f-
I F 15d0
'L I F I
ER
D
(OPTIONS 001
I
AND 011 ONLYI
I
[NOTE 4 )
ss2
F i g u r e 12. INPUT SIGNAL DOWN CONVERTER
( S c h e m e t l c D i a g r a m
f o r
O p t i o n s
001,
O l 1 , a n d
021)
4 1