Axell Wireless MBF4005SERIES, MBF23072317, MBF23082319 OMU Datasheet

Product Specification Sheet

©Axell Wireless | www.axellwireless.com | [e-mail] | Version: 3.5 | E & O.E. All specifications are subject to change without prior notice.

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OMU II
Optical Master Unit

Key features:

 Supports Cellular 2G, 3G, 4G services up to 2700MHz & public

safety services FM/VHF/UHF/LMR on the same enclosure

 Single enclosure to support high power (MBF-40) and low

power (MBF-20) remote units

 MIMO support

 Web based remote management via wireless modem

 Flexible configuration to support up to 8 sectors via single chassis

 Simple integration to AEM or any other 3rd party NOC via SNMP traps

The OMU II is used to convert signals
from RF to light when fibre-fed
repeaters are used at the remote
end of the optical link. The OMU II is
a headend system that can be
connected directly to a base station
or off-air device such as a digital
repeater or bi-directional amplifier.
For larger venues with multiple
services and multiple bands, a Point
Of Interface (POI) unit may be
required to condition Uplink and
Downlink RF signals between the
BTS/Off-air Repeater and the OMU.
In the downlink direction, the OMU
picks up the signal from the BTS,
converts it into an optical signal and
transfers it over a fibre optical cable
to the repeater. In the uplink
direction, the OMU receives the
signal from the remote repeater via
the fibre optical cable, converts it to
a RF signal and sends it back to the
base station.

Architecture

Each OMU II has a dedicated control
card, alarm and battery backup card,
rack communication board (RCB),
optional modem card and 2 AC/DC
power supplies on the back of the
chassis. It has 12 slots in the front to
support the Opto Module cards and
Signal Conditioning Card- Optical
Splitter Module (OSM). The OSM

cards include a 1:4 optical splitter
hence it can support up to 4 MBF-20
units from a single OSM.

The OMU II can support up to 8 of
our standard high powered MBF-40
or 24 low powered MBF-20
remotes. For the maximum number
on MBF-20 remote units, 6 Opto
Modules and 6 OSM are used which
may be configured according to the
number of sectors used in the
project – up to 6 sectors in this
configuration. If only MBF-40 units
are required, up to 8 Opto Module
cards are used (no OSM cards) which
may be configured according to the
number of sectors used in the
project – up to 8 sectors in this
configuration. You can mix and
match between the MBF-40 and MBF
20 remote units. Please refer to the
2nd page for all the available
options.

Automatic Optical Gain Setting

The fibre optic system Axell Wireless
has designed puts a clear focus on
user friendliness and ease of
installation and commissioning.
Through an automatic optical gain
setting, the commissioning is easily
performed, thus reducing the time it
takes to put the equipment in
service. This also means that the

training is significantly simplified and
the need for installation effort is
decreased.

Remote Supervision

Only one modem is needed to
communicate with an OMU II and its
fibre fed repeaters. The modem
types available are GSM, UMTS,
CDMA 1x, PSTN, and TCP/IP. The
modem is found inside the OMU II
and communication with the fibre­fed remote units is transparently
handled via the fibre that connects
them. The system can be monitored
and controlled via the Axell Wireless’
network management software tool
called AEM. AEM communicates with
each fibre remote unit via the OMU
over the same single mode fibre
strand that carries the RF signals.
Both data communications and the
RF signals are managed over the
same fibre link which results in a very
reliable supervision of the radio link.

The OMU Mark II supports: public
safety services (VHF, UHF, TETRA,
SMR 700/800/900), cellular bands for
EMEA and APAC (800 / 900 / 1800 /
2100 / 2600) and LTE700, 850, PCS
and AWS for Americas and is always
used in combination with one or
several fibre fed repeaters.

©Axell Wireless | www.axellwireless.com | [e-mail] | Version: 3.5| E & O.E. All specifications are subject to change without prior notice.

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Technical specifications

RF Parameters

Frequency bands

68-500 / 380-2200 / 700-2700 MHz

Gain flatness

typical 2 dB (p-p)

Nominal RF input power

+10 dBm composite power

Absolute maximum RF input power

+23 dBm composite power

Number of optical modules

1-24 (depends on low/high power configuration)

MBF-40 (high power)

MBF-20 (low power)

The table to the left lists the
various high (MBF-40) and
low (MBF-20) power remote
unit configurations and how it
affects the total number of
links supported.
For example: if the OMU II
supports two high power fibre
remotes, then the available
low power links = 20

8 0 7 4 6 8 5

12 4 16 3 16 2 20 1 20 0 24

Laser class

Class 1

Optical module electrical specification

Optical wavelength Downlink (± 10 nm)

1310

Optical wavelength Uplink (± 3 nm)

1510 or 1530 or 1550 or 1570 or 1590

Maximum optical input power

+5 dBm

Output power (Tx) max

+7 dBm

Automatic fibre optic loss compensation

Yes

Optical Splitter Module (OSM) electrical specification

Optical splitter (OSM) input power

+5 ± 1 dBm

Insertion loss

7dBo

Power requirements

Power requirements

230/115 VAC, 50/60 Hz,-48 VDC

Power consumption

Typical 50 W (fully equipped)

External electrical interfaces

Local maintenance terminal

Ethernet, USB, RS232

RF ports

N-type Connector Female for 1-2 sectors. SMA connectors for 8 sectors

Optical ports

SC/APC

AC/DC mains input

AC: IEC Connector with main lead supplied according to the region. DC: flying
leads for connection to terminal block

External alarms

Via Front panel

Modem connector

RJ45 for wireless modem , RJ11 for PSTN modem

Modem antenna connector
(Wireless modem)

SMA
Ethernet connector

RJ45

Mechanical specifications

Dimensions (W x H x D)

17.5 x 5.2 x 11.4 in (444 x 132.5 x 291 mm) 19” rack

Weight

33 lbs (15 kg) (fully equipped)

IP rating

IP20

Environmental

Operating temperature

+41 to 113° F (+5 to +45°C)

About Axell Wireless

Axell Wireless is one of the top global providers of wireless coverage solutions and the market leader in the
provision of solutions for the public safety market worldwide. Our equipment has been deployed in some of the
most technologically challenging environments in the world, providing coverage for tunnels, metros, buildings,
stadiums and transportation systems all over the world. With its headquarters in the UK, Axell Wireless has been
operating for over 40 years and has an international footprint. A proven track record combined with a reputation
for providing innovative and high-quality products has made Axell Wireless a truly global player in the wireless
coverage industry.