Viking 242-2009-632 - Manual (Page 97)

CIRCUIT DESCRIPTION
6-25
March 1999
Part No. 001-2009-600
Figure 6-10 RF INTERFACE BOARD BLOCK DIAGRAM
VREF EX WO135
P102
P101
P105
P104
P103
PWR CNTRL
U101
Q102-Q105 U102B
Q101
U109A
U109B
U109D
U110E
U110F
U108A Q106 Q107
FAN 2 LOW
FAN HIGH
FAN 1 LOW
FAN HIGH
3
4
U107B
FAN 2 BUFFER
U107A
FAN 1 BUFFER
J104
U110A
U110B
Y4 Y5
Y7
WO103
12
29
11
28
7
30
10
8
26
9
27
13
A0
A2
22
3
21
20
14 VREF EX
19
CLK
SER
2 STR
U103
U104
U105
U106
A0
A2
MUX 2
MUX 1
MUX 3
5V REGULATOR
COMPARATOR
MUX/RES
FORWARD
POWER
Y2
Y1
Y0 Z
E
A1
Y6
Y5
Y4
Y3
Y2
Y1
Y0
Y2
Y1
Y0
Z
E
A1
Z
E
A2
A1
A0
ADJUST
POWER
RF POWER CONTROL J1
2
1
HS CS RX
RF CLK
RF DATA
RSSI
HS LK RX
RX INJ
RF DATA
RF CLK
HS LK EX
TX MOD
HS CS EX
LPTT
TEMPERATURE
REFLECTED POWER
FINAL 4 POWER
FINAL 3 POWER
FINAL 2 POWER
FINAL 1 POWER
FORWARD POWER
HS CS RX
RF CLK
RF DATA
RSSI
RF MUX2 INH
RF MUX1 INH
RF DATA C
RF DATA A
RF DATA B
TX MOD
HS CS EX
STN CS EX
LPTT
RF MUX3 INH
+26V
+15V
EXCITER
RECEIVER
PA
+15V +5V
PC STR
RX WB AUDIO
A D LEVEL
OE
Y7
Y6
SYN CS RX
RX WBAND
SYN CS RX
SYN LK RX
SYN LK EX
SYN CS EX
U112D
U112A
U112B
U112C
Q8
Q7
Q6
Q5
Q4
Q3
Q2
Q1
U102A
Q108 Q111B
RF DET (PRE-DRIVER)