Page 2
RF Technology R50
CONTENTS
CONTENTS
1
OPERATING INSTRUCTIONS
1
1.1
F
RONT
P
ANEL
C
ONTROLS AND
I
NDICATORS
1
1.1.1
Monitor Volume
1
1.1.2
Monitor Squelch
1
1.1.3
N.SQ
1
1.1.4
C.SQ
2
1.1.5
LINE
2
1.2
F
RONT
P
ANEL
I
NDICATORS
2
1.2.1
PWR LED
2
1.2.2
SQ LED
2
1.2.3
ALARM LED
2
2
RECEIVER OPTIONS
3
2.1
S
ERIAL
I/O P
ARAMETERS
3
2.2
R
ECEIVER
L
OW
B
ATTERY
L
EVEL
3
2.3
LOOP V
OLTS
S
ELECT
3
2.4
COS S
OURCE
/S
INK
S
ELECT
3
2.5
COS P
OLARITY
4
2.6
N
OISE
B
LANKER
4
2.7
A
DVANCED
S
LOT
S
ELECTABLE
P
ARAMETERS
4
2.8
S
TANDARD
C
HANNEL
P
ARAMETERS
5
3
RECEIVER I/O CONNECTIONS
5
3.1
25 P
IN
C
ONNECTOR
5
3.2
9 P
IN
F
RONT
P
ANEL
C
ONNECTOR
6
4
CHANNEL PROGRAMMING AND OPTION SELECTIONS
6
5
CIRCUIT DESCRIPTION
7
5.1
R50 M
ASTER
S
CHEMATIC
(S
HEET
1)
7
5.2
M
ICROPROCESSOR
(S
HEET
2)
7
5.3
RF S
ECTION
(S
HEET
3)
9
5.4
5.4 R
ECEIVER
S
ECTION
(S
HEET
4)
10
5.5
V
OLTAGE
C
ONTROLLED
O
SCILLATOR
(S
HEET
5)
11
5.6
A
UDIO
P
ROCESSING
S
ECTION
(S
HEET
6)
12
5.7
P
OWER
G
ENERATION
S
ECTION
(S
HEET
7)
13
6
FIELD ALIGNMENT (CALIBRATION) PROCEDURE
14
6.1
S
TANDARD
T
EST
E
QUIPMENT
14
6.2
I
NVOKING THE
C
ALIBRATION
P
ROCEDURE
M
ANUALLY
14
6.3
T
HE
"M
ISCELLANEOUS
" C
ALIBRATION
P
ROCEDURE
14
6.4
L
INE
C
ALIBRATION
P
ROCEDURE
15
6.5
T
HE
"R
EFERENCE
" C
ALIBRATION
P
ROCEDURE
16
7
SPECIFICATIONS
16
7.1
O
VERALL
D
ESCRIPTION
16
7.1.1
Channel Capacity
16
7.1.2
CTCSS 17
7.1.3
DCS
17
7.1.4
Channel Programming
17
7.1.5
Channel Selection
17
7.1.6
Microprocessor
17
