Use Manual

DMR repeater 24/01/2011 Versione 1.3
Documento Riservato - non divulgabile senza autorizzazione
Pag. 29 / 31
∞ the upper led is red if a heavy problem happens to the base station or during its booting process
(meaning a stable out of service status); the corresponding alarm 1 is active; otherwise the led is off;
∞ the 2
nd
led is red if the base station undergoes a temporary out of service (example during a channel
change) or if a slight problem happens (warning); the corresponding alarm 2 is active; otherwise the
led is off;
∞ the 3
rd
led is green if the output contact 1 is active (normally open);
∞ the 4
th
led is green if the output contact 2 is active (normally open);
∞ the 5
th
led is green if the input contact 1 is active (normally closed);
∞ the 6
th
led is green if the input contact 2 is active (normally closed);
∞ the 7
th
led flashes in green color if PPS signal is generated (Attention: after the first reception of a valid
GPS signal for generating PPS signal, this signal is always generated by the module, it is eventually
locked to local clock of the divice in case of temporary unlock with GPS reference. The DSP module
checks its effective validity); otherwise it is off;
∞ the 8
th
led flashes in green color if embedded GSM/GPRS module is enabled; it flashes fast if the SIM
card is missing, slower if the SIM card is present; it is red during transmission of GSM bursts;
otherwise it is off.
5
5
.
.
3
3
G
G
E
E
N
N
E
E
R
R
A
A
L
L
R
R
E
E
C
C
O
O
M
M
M
M
E
E
N
N
D
D
A
A
T
T
I
I
O
O
N
N
S
S
A
A
N
N
D
D
N
N
O
O
T
T
E
E
S
S
5.3.1 IMPROPER USE
It is recommended to install the equipments in closed cabinet, to allow only authorized people to access to
them, in order to avoid handling or improper use of equipments and to avoid accidental contact with hot
surfaces.
5.3.2 THERMAL DISSIPATION
Outlet cabinet containing the equipments should be designed to ensure a good internal air flux for heating
dissipation. A free slot of at least 1UT is recommended between two near equipments.
In case RF transmitter is set for its maximum power, it is active with a duty-cycle near to 100% and ambient
temperature could be above 40°C, a larger respect area must be considered around the rack and an air forced
cooling system should be eventually designed (“FAN” contact of the equipment can be used to switch on and
off cooling system). The transmitter is protected against over-temperature: if the RF mosfet temperature
arises over 90°C, the microprocessor will automatically decrease the generated RF power in order to make the
amplifier work in safety conditions. The nominal RF power will be restored as soon as the mosfet temperature
will decrease below 60°C.
5.3.3 POWER SUPPLY SYSTEM
Internal power supply voltage is nominally set to 13.2V dc from battery, with negative pole connected to
ground, and it is protected against polarity inversion, over-voltage, under-voltage, short-circuits. Isolated PSU
modules can be optionally supplied for 12V/24V/48V dc input voltage.