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P O W E R
S U PPLY
BLACK
R E D
+
–
S Y S T E M
G R O U NDS T U D
DATA
PR IM A R Y
P O W E R
I N T E R F A C E
A NTENNA
TRA NSM ISSIO N L IN E
Figure 19. Digital Interface/Utility Board Connections—MDS P-50
MDS 05-2818A01, Rev. C
RSPSupply - 1-888-532-2706 - www.RSPSupply.com
http://www.RSPSupply.com/p-8466-MDS-P60-Compact-Enclosure-(One-Radio).aspx
+
–
F U S E
B AT T E R Y
MOV1
P AC K
DIG ITAL
I N T E R F A C E
A S S E M B L Y
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 s ignal strength. Range is approximately
zero to five volts DC through a 10K resistor. Refer to the trans-
ceiver manual for additional RSSI information.
MDS P-60/P-60 HL Reference Manual
Invisible place holder
1
3
–
+
+
1
J7
4
6
J4
1
J8
+
F2
+
J6
13 VDC
+
J10
–
J5
J9
1
2
3
4
5
F1
J1
MOV 2
1
2
3
4
5
6
J3
+
–
1
P R I M A R Y P O W ER
INPUT (A C or DC a s
C H A S S I S
indic ated on c hassi s
GRO U N D
label.)
+
+
1
2
J2
25 26
R E S E R V E D F O R R S - 4 2 2
( C O NSU L T FA C T O R Y )
6
7
8
9
10
RS-232
I N T E R F A C E
C O N N E C T O R
7
8
9
10
11
12
J 1
37
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