User Manual

MBF, Multi Band Repeater
PRODUCT DESCRIPTION AND USER'S MANUAL
© Axell Wireless Ltd A 200 93 00, rev E 29 (105)
Off No communication
LED 4, DL Data, Yellow
On Communication is ongoing in the downlink direction
Off No communication
LED 5, Opto Rx, Green
On Received RF signal on fiber channel is above threshold
Off Input level below threshold
LED 6, Opto Tx, Green
On Transmitted RF signal on fiber channel is above threshold
Off Output level below threshold
3.6.5 Filter
The filter provides a wide band selective window for the uplink and downlink in each band on the RF antenna
end of the repeater.
3.6.6 RefGen, Reference Generator Module
The Reference Generator generates a stable reference frequency which is distributed to the radio modules of
the system. It is used as a reference signal in the synthesizer in the repeater and also in the microcontrollers in
the MCPA and Radio Module.
3.6.7 EAIM, External Alarm and Interface Module
Four external alarm sources can be connected to the alarm module, EAIM. These sources must generate a
voltage between 12 and 24 VDC. The presence or absence of this voltage will trigger the alarm depending on
how alarm thresholds have been configured in the controller software.
The module can also supply +15V to external alarm sources. The maximum allowed load on this supply is
100mA.
One relay contact closure is provided to reflect the status of the repeater. This can be used as a sum alarm.
For installation of external alarms see section 5 Installation.
3.6.8 PSUP, Power Supply
The PSUP is fed by 110/230 V AC, 50/60 Hz or -48 V DC. The PSUP generates secondary DC voltages for
the repeater modules. The input is equipped with a surge, EMI, EMC suppression filter.
The -48VDC version of the power supply is designed to turn off if the supply voltage falls below -36V
(±1V). It will turn on again as the supply voltage reaches -43V (± 1V).
On the Power Supply unit a rechargeable battery pack in mounted. This part also includes charging and
supervision electronics. The backup battery will provide the Control Module and modem with enough
capacity to send an alarm in case of input power failure.
The power supply module is connected to all other electronic modules via the distribution board.
The power supply has a switch which allows it to be set in “on” position or in “stand by”. The battery can be
switched on and off.