Use Manual

DMR repeater 24/01/2011 Versione 1.3
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Pag. 21 / 31
GPS
antenna
GSM /
GPRS
antenna
Main RX /
TX antenna
Diversity RX
antenna
12Vcc
Power
supply
Inhibit /
Power_good
contacts
Alarm
outputs
I/O
contacts
Audio line
interface
Analog
inputs
6V-12V output,
max 200mA
FAN
activation
RS232
port
Main RX
antenna
MTCH
synchronous
serial interface
fuses
External
synchronism
input
Matrix
connector
The following connections are available (for each one, a picture of the connector and the related schematic
diagram of back plane PCB are shown):
∞ Power Supply: 13.2Vdc with negative to ground, or optionally 24Vdc or 48Vdc isolated. The equipment
is protected from polarity inversion. Two automotive type 10A fuses work against accidental short
circuits. The connector has 3 poles (+Vin, rack ground, -Vin) with 5.08mm pitch
1
1
2
2
3
3
P12
3 - 5.08pitch
F2
FUS-AUTO-10A
F1
FUS-AUTO-10A
-Vin
+Vin
∞ Power supply control: normally closed optically isolated “PG” (Power Good) contact ensures the
presence of internal correct supplies; “INH” (Inhibit) contact should be kept closed/open to switch
off/on the equipment. Input contact is internally polarized with +/-12V.
1
3
2
4
P6
MCV 0,5/ 4-G-2,5
PG_A
COM_OPTO
PG_B
/INHIBIT
∞ Antennas: up to 5 antenna connectors can be mounted according to the specifications of equipment.
1. A female N-type connector is connected to the output of the duplexer (if present) or to
the output of the TX (if branching is not mounted inside the equipment);
2. A female BNC-type connector (above the N-type one) is present if duplexer is not
mounted inside the equipment. It is connected to main RX;