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Table 3. Pin Connections (Analog Interface/Utility Board) (Continued)
TB1
Connection
Pins
9
AC Alarm
10
Received Signal Strength
Indication (RSSI)
8 & 11
Keyline connection when an
internal current source is used.
(Requires a jumper between Pins
7 and 12.)
12
+13 Vdc
3
2
J7
1
J4
26
25
J2
2
1
J3
25
Figure 9. Analog Interface/Utility Board, P/N 03-2110A01
20
RSPSupply - 1-888-532-2706 - www.RSPSupply.com
http://www.RSPSupply.com/p-8466-MDS-P60-Compact-Enclosure-(One-Radio).aspx
Remarks
Normally 11 Vdc; drops to zero volts if an AC failure occurs.
Approximately 0 to 5 Vdc through a 10K resistor.
This method uses the on-board 12 volt DC supply. For more
information, see "Keyline Options" discussion below.
Accessory power (1 Amp maximum). Jumpered to Pin 7 for
keying with an internal current source. See description for
Pins 8 & 11 above.
F5
F4
F3
J5
J1
J6
Keyline Options
Several methods may be used to key the transceiver, depending on the facilities
available at the installation site and the design of the customer-supplied data
equipment. (See
Figure 10 on Page
keying methods. Contact the factory if further assistance is required.
Positive or Negative Keying
One keyline option is to use a keyed 12 to 25 volt source or a fixed voltage
source and a series relay. The relay contacts can be included in either the pos-
itive or negative supply lead. (See
The use of an opto-isolator allows both keying supply leads to "float" above or
below ground, and tolerates line to ground transients up to 2500 volts. TB1 Pin
7 must be positive with respect to TB1 Pi n 8. For keying supply voltages higher
than 25 volts, add a resistor in series with the connection to TB1 Pin 7 or TB1
Pin 8 to limit the keying current to 10 to 20 mA.
MDS P-60/P-60 HL Reference Manual
Invisible place holder
F1
3
LINE 2/DC +
2
NEUTRAL
1
LINE 1/DC
F2
12
+13V ACCY
11
GND
10
RSSI
9
AC ALARM
8
KEYLINE LO
7
KEYLINE HI
T2
6
GND
5
RX AUDIO
4
RX AUDIO
3
GND
T1
2
TX AUDIO
1
TX AUDIO
0 0 - 0 0 0 0 0 - 0 0
22.) This section discusses three common
Figure 10 on Page
22, examples 1 and 2.)
MDS 05-2818A01, Rev. C
POWER
CONNECTIONS
(TB2)
INTERFACE
CONNECTIONS
(TB1)
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