MDS 05-2818A01, Rev. C
MDS P-60/P-60 HL Reference Manual
37
Invisible place holder
Figure 19. Digital Interface/Utility Board Connections—MDS P-50
Additional Interface Connections
Two additional outputs are provided on J1 for custom applications: AC power
failure alarm, and the transceiver’s Received Signal Strength Indication
(RSSI).
AC FAIL—
Pin 12
H = AC Present—Approximately 11 Vdc through a 1 K
resistor
L = AC Failure—Ground through a 1 K
resistor
SGN-STRENGTH (RSSI)—
Pin 11
Same as transceiver’s RSSI output. Provides a DC voltage pro-
portional to the received signal strength. Range is approximately
zero to five volts DC through a 10K resistor. Refer to the trans-
ceiver manual for additional RSSI information.
+
–
B A T T E R Y
P A C K
R E D
BLACK
F U S E
DI G I TAL
I N T E R F A C E
A S S E M B L Y
S Y S T E M
G R O U NDS T U D
DATA
I N T E R F A C E
P R I M A R Y
P O W E R
A N TE N N A
TRA N SM I S S I O N L I N E
P O W E R
S U PPLY
J7
J4
1
1
J8
1
F2
J2
1
J1
1
J6
J5
+
–
F1
MOV1
MOV 2
J3
1
3
4
6
+
+
+
+
J10
+
J9
P R I M A R Y P O W ER
IN P U T (A C or DC a s
indic ated on c hassi s
label.)
+
–
13 VDC
+
–
RS -232
I N T E R F A C E
C O N N E C T O R
J 1
25 26
2
C H A S S I S
G RO U N D
+
–
2
3
4
5
6
7
8
9
10
11
12
1
2
3
4
5
6
7
8
9
10
TR
A
N
SC
EI
V
ER
E
T
C
R
C
T
C
D
C
D
D
S
R
C
T
S
R
T
S
R
X
D
T
X
D
G
N
D
A
C
F
A
IL
S
G
N
S
T
R
E
N
G
T
H
R E S E R V E D F O R R S - 4 2 2
( C O NS U L T FA C T O R Y )
RSPSupply - 1-888-532-2706 - www.RSPSupply.com
http://www.RSPSupply.com/p-8466-MDS-P60-Compact-Enclosure-(One-Radio).aspx
