HP 8340A Service Manual page 153

LOCK
A37 PHASE LOOP I (PLLI) Oii/IDER
08340-60043
@
2
DIVIDE BY
INPUT AMPLIFIER---- -- -- -- --,
"
.022 '
0,47 121
UGF.
' " " '
'' '
1000 1000 1000 1000
' ' "
" " "
1000
. .
@
.
INPUT LATCH
8 .
0 11
1
l IN
UllA BOE I
P 23 I ' ""
-: �
" 511 1000
rl_ - 5llN)
" '
, Pl-22(INJ
DST
8
Pl-40Nl
0 1
0
Pl-21<1Ni
Oii 5
R25 :ooO
Pl-2Q(IN>'
'
P1-2(H/)
Pl-190N)
" '
.
'
" I
DS!5
R22 000
R2�
R20
1000
R?.I
'
1000
PONER SUPPLIES
"
""'0,6 +5VF
� I i ,022
00
Pl-6,11,10,13-17,
24,27-3�
TP3
@
DIVIDE BY N
.
tVVF
[ECL]
Y
I 2
U 1s
--+-O GI [LOAD]
X
· 1 2
! ��[���l
�4[HOLO]
I
6,2,+/Cl5
U4A
16
, 0
_
5,6,+,CT=�l5 NC
UI J � "" 1 5 , 6, ·-, CT-O I
'
-<
1000
c !
"
"
NC
,
[2] H'i .
[I]
1,15,D
1000
.
.
@)
FRACTIONAL DIVIDE
"'
1000
' "
QI ' U2
'
""
"
2
[ F our -
U
G2 I
G J
01
3,
:[T0 9l
NC
I ��
F ouT
[
9
2.fruJ
·
.
Scans by HB9HCA and HB9FSX
TP7
®
2
REFERENCE DIVIDE BY
2
lJ7 C
OdBm JI
IN 10 MHz ID
14 7
W34 .022 II
REFERENCE NOTE I C
_ >i
I 3 g ;..
R
FF
B
1000
C4 ��� O
U4B '
"
.
.
-HiVF
U14A
U 13C
1000
6 ?:1 c
R FF
LOW SWALLOW ENABLE
1,H
196
CT - R
;�!F
TP2
�ouJ
::
IDQO
i,
NC
S UllO UI NC
UllF
Ill IOOD ( I) 7
T (I I 3F
1000 1000
" i .022
•
TPIO TPI I 2 r � 2
NOTES
REFER ro THE SERVICE SECTION
INTRODUCTION FOR DETAILED SCllEMATIC
OtAGRAM SYMBOLOG
Y
2. RESISTANCE �ALUES SHOWN
ARE lN OHMS,CAPACITANCE IN
MICROFARADS,AND lNDIJCTANCE
lN r.llCROflENRIES UNLESS
OTHERWISE NOTEO,
�. JI AND A37WI CENTER CONDUCTORS
ARE ELECTRICALLY CONNECTED
TO THE PC BOhRO THROUCK
SOLDERED GAUGE CINE l'flRCS.
THEIR OUTER CONDUCTORS ARE
2�
CONNECTED TO PC BOARD GROUND
THROUGH MECHANICAL SCR�W
CONNECTIONS IN THE �SSEMBLY
COVER Pl.ATE.
®
PHASE/FREQUENCY DETECTOR
Ul 6 T
RI?. R S
O
UBIJ C0 PK 2
i
I J R
1000 220PF
"'
Ff U7A
2
'
"
>1 15
TP 12
1000
111 Rl3
U I 6A I
" R7
. 511 511
'
�
4 R FF uec
22orF
1000
CS[)
PHASE LOCK INDICATOR
R31 .
'
r l-25WUT)
' 196
llULI
"
ON=PLLI (,� "
LOCKED OS I 1960 3. 3V
; "" 1�- - -
8
R�5 J
U7B
1000
1000
! 11
' '
_
J
___
Figure 8C-16. A37 PLL/ Divider, Schematic Diagram
8-207 /8-208
NOTES.