Advertisement
r---------------~---
I
+15V
I
;-~~~------~~-~~-----~~~~~~~~t5V
CI6
GNO
I
I
'25
I
cal
5 MHz INTERNAL
C4
•
I
TCXO REFERENCE
0.1
I
I
FREQUENCY
I
I
OSCILLATOR
REMOTE ,HUTDOWN
I
TCXO POWF.RSUPPLY
I
CIRCUITRY
I
Ra
CI
6.8
ul
YI
0.01
r - - - - -
I
CS
I
0.01
I
' - - - - - - '
R6
680
: 1+
6.a,,1
+5V (26,.:
~'---""'"
La
S.6"H
REFERENCE SELECT
SWITCH AND
SHAPER CIRCUITRY
CI3
"f0.1
REFERENCE
INPUT
SELECT
RIS
3.31<
CI7
0 .•
Rao
3.31<
R22
820
TTL
SHAPER
0.1
I
I
RZ8
10K
RZ9
10K
EXT REF
IN/OUT
FREQ SELECT
CI2.
0.1
LKI
E2
I MHz CONNECT LI<I AND LK2
5
MHz CONNECT
Lt<2
10MHz CONNECT LI<I
U4
74LSISI
DATA SELECT
SWITCHES
cia
+SV _ _ ... H ... ....,
;-_..., _ _ _ -
-
-- -
.- -
-
-
-- ______________ ......J
liNT
P/O
JS
FROM INT/EXT S2
SWITCH'" REAR PANEL
NOTES: (UNLESS OTHERYJSE NOTED)
I.
RESISTOR VALUE ARE IN OHMS
I/~
WATT K.I,ooo
M: 1 ,000,000.
2.
CAPACITOR VALUES ONE OR GREATER ARE IN
PICOFARADS, LESS THAN ONE ARE IN MICROFARADS.
3.
INDUCTANCE VALUES ONE OR GREATER ARE IN
M1CROHENRIES, LESS THAN ONE ARE IN MILLIHENRIES.
~.
PARTIAL REFERENCE DESIGNATIONS ARE SHOWN, FOR
COMPLETE DESIGNATION, PREFIX WITH UNIT AND OR
ASSEMBLY DESIGN.
,.
ASTERICKS INDICA TE OPTIONAL PARTS-
~
C2 VALUE IS 0.1
pF,
FOR •• ASSeMBL Y ONLY.
SH
2
INTERNAL/EXTERNAL
REFERENCE FREQUENCY
TO PHASE COMPARATOR
SH
2
DIVIDED OSCILLATOR
FREDUENCY TO
PHASE COMPARATOR
SH
2 }
FROM
.
SH
2
DIVIDER
CIRCUITS
SH
2
"
RACAL PROPRIETARY
Figure 7-10.
Schematic Diagram, 2nd LO/BFO
Synthesizer, AS (Sheet
~
of 3)
Change 2 7-45/7-46
Advertisement
