AXELL MBF MULI-BAND FIBRE REPEATER PRODUCT DESCRIPTION AND USER’S MANUAL MBF, Multi Band Repeater Product Description and User’s Manual THIS DOCUMENT IS VALID FOR SINGLE-BAND, DUAL-BAND AND TRI-BAND MBF REPEATERS SUPPORTING THE FOLLOWING FREQUECY BANDS: LTE 700, 850, 900, 1800, 1900, 2200 and AWS Single or dual band repeater Tri band repeater
AXELL MBF MULI-BAND FIBRE REPEATER PRODUCT DESCRIPTION AND USER’S MANUAL Copyright © 2011 Axell Wireless Ltd All rights reserved. No part of this document may be copied, distributed, transmitted, transcribed, stored in a retrieval system, or translated into any human or computer language without the prior written permission of Axell Wireless Ltd. The manufacturer has made every effort to ensure that the instructions contained in this document are adequate and free of errors and omissions.
AXELL MBF MULI-BAND FIBRE REPEATER PRODUCT DESCRIPTION AND USER’S MANUAL About This Manual This Product Manual provides the following information: • Description of the Repeater unit • Procedures for setup, configuration and checking the proper operation of the unit • Maintenance and troubleshooting procedures For whom it is Intended This Product Manual is intended for experienced technicians and engineers.
AXELL MBF MULI-BAND FIBRE REPEATER PRODUCT DESCRIPTION AND USER’S MANUAL Safety to Personnel Before installing or replacing any of the equipment, the entire manual should be read and understood. The user needs to supply the appropriate AC or DC power to the OMU System. Incorrect power settings can damage the OMU System and may cause injury to the user. Throughout this manual, there are "Caution" warnings.
AXELL MBF MULI-BAND FIBRE REPEATER PRODUCT DESCRIPTION AND USER’S MANUAL Radiation Hazard This equipment emits radio frequency radiation and can, if used the wrong way, be hazardous for personnel. Here follows an example of the power densities from an intentional radiator. For radiation from a general antenna, the power density (S) at some distance is according to the wellknown formula: For the repeaters described in this handbook the maximum output powers are 5 W for 900 / 1800 MHz and 10 W 2100 MHz.
AXELL MBF MULI-BAND FIBRE REPEATER PRODUCT DESCRIPTION AND USER’S MANUAL Standards This document covers both GSM and WDCMA repeaters. These references are valid for respective repeater type. ETSI TS 25.106 Universal Mobile Telecommunications System (UMTS); UTRA repeater radio transmission and reception 3GPP TS 25.106 version 5.8.0 Release 5) ETSI TS 25.143 Universal Mobile Telecommunications System (UMTS); UTRA repeater conformance testing (3GPP TS 25.143 version 5.8.
AXELL MBF MULI-BAND FIBRE REPEATER PRODUCT DESCRIPTION AND USER’S MANUAL Electrostatic Sensitivity Observe electrostatic precautionary procedures. Caution ESD = Electrostatic Discharge Sensitive Device Semiconductor transmitters and receivers provide highly reliable performance when operated in conformity with their intended design. However, a semiconductor may be damaged by an electrostatic charge inadvertently imposed by careless handling.
AXELL MBF MULI-BAND FIBRE REPEATER PRODUCT DESCRIPTION AND USER’S MANUAL Table of Contents 1 Introduction ................................................................................................................. 1 1.1 General Information on Installation Approach .................................................................. 1 1.2 Models and Ordering Information ...................................................................................... 2 1.3 Characteristics ........................
AXELL MBF MULI-BAND FIBER REPEATER PRODUCT DESCRIPTION AND USER’S MANUAL 4.6 AEM Addresses .................................................................................................................. 31 4.7 Integration into the AEM .................................................................................................... 31 5 Troubleshooting ........................................................................................................32 5.1 Module LEDs...........................
AXELL MBF MULI-BAND FIBRE REPEATER PRODUCT DESCRIPTION AND USER’S MANUAL 1 Introduction Axell MBF (Multi Band Fibre) family of repeaters comprises of three types of fibre fed repeaters: single-band, dual-band and tri-band. The repeaters are available in various models supporting frequency bands LTE 700, 850, 900, 1800, 1900, 2200 and AWS. The MBF repeater RF signal is supplied via an optic fibre connection to the Axell Optical Master Unit (OMU).
AXELL MBF MULI-BAND FIBRE REPEATER PRODUCT DESCRIPTION AND USER’S MANUAL 1.2 Models and Ordering Information Each of the three MBF repeater types are provided in a wide range of models. The following tables list the most models available for single-, dual- and tri-band type repeaters.
AXELL MBF MULI-BAND FIBER REPEATER PRODUCT DESCRIPTION AND USER’S MANUAL 1.4 ALC The repeater has a constant gain in both uplink and downlink paths. The gain is set by defining the attenuation as described above. The repeater has a defined maximum output level. If the input signal amplified by the gain set exceeds the set output limit, an ALC (Automatic Level Control) loop is activated. This ALC ensures that the amplifier does not add distortion to the radio signal.
AXELL MBF MULI-BAND FIBRE REPEATER PRODUCT DESCRIPTION AND USER’S MANUAL 1.6.1 Securing the Unit The repeaters are secured with two hex screws (M8) and can also be locked with a key. Note! The two screws must be fully tightened. Failure to do so may affect the IP65 compliancy and therefore any warranty. Screws Lock Connectors 1.6.2 External Interfaces The repeater’s interfaces are located on the underside panel.
AXELL MBF MULI-BAND FIBER REPEATER PRODUCT DESCRIPTION AND USER’S MANUAL 1.6.3 Internal Interfaces You will need to open the Repeater in order to: • Connect power and optic fibres • Connect alarms (if relevant) • Power up the Repeater • Connect to the LMT (RS232 connection) for local setup Rechargeable battery pack Power and battery switches Controller module RS232 local setup connection. Refer to section 4.1.2 for LED descriptions F/O Converter LEDs (section 4.1.
AXELL MBF MULI-BAND FIBRE REPEATER PRODUCT DESCRIPTION AND USER’S MANUAL Rechargeable battery pack Power and battery switches Controller module RS232 local setup connection. Refer to section 4.1.2 for LED descriptions Two F/O Converters: LEDs (described in section 4.1.1), F/O connector (section 2.6) Alarms and relay connections. Refer to section 2.7 for descriptions. Power connections (2.7) 1-3.
AXELL MBF MULI-BAND FIBER REPEATER PRODUCT DESCRIPTION AND USER’S MANUAL 2 Installation 2.1 Unpacking 2.1.1 Unpack the Unit Inspect the shipped material before unpacking the equipment, document any visual damage and report according to routines.
AXELL MBF MULI-BAND FIBRE REPEATER PRODUCT DESCRIPTION AND USER’S MANUAL 2.2.1 Ensure Proper Cooling • Mount the repeater so that heat can be dispersed from it. • The repeater wall mounting kit ensures an optimum airflow between the wall and the repeater itself. • Do not block this air channel as it will cause the MTBF of the repeater to drop dramatically, or even in the worst case cause the repeater to fail completely. • If possible use a wall in the shadow to minimize the overall sun loading.
AXELL MBF MULI-BAND FIBER REPEATER PRODUCT DESCRIPTION AND USER’S MANUAL 2.4 Ensure Good EMV Protection Caution If insufficient Electromagnetic Protection is provided, or if EMV measures are not taken, warranties issued by Axell Wireless are not valid.
AXELL MBF MULI-BAND FIBRE REPEATER PRODUCT DESCRIPTION AND USER’S MANUAL The primary protective device is part of the site installation and is not supplied by Axell Wireless. Coaxial lightning protection is normally one of these three types: Gas capsule, High-pass and Bandpass. There also need to be a protective device installed on the power supply cord. Protective device installed in connection with the power supply 2.
AXELL MBF MULI-BAND FIBER REPEATER PRODUCT DESCRIPTION AND USER’S MANUAL 3. Connect the fibre to the Fibre Optic Converter inside the repeater 4. Place the fibre in the rubber seal 5. Adjust the fibre length inside the repeater and insert the seal into the inlet 6. Attach the hose to the inlet Note! Make sure the fibre is not bent too sharply inside the repeater. There is room under the optic module to allow for some slack of the fibre.
AXELL MBF MULI-BAND FIBRE REPEATER Attach the fibre to the fibre optic converter inside the repeater. PRODUCT DESCRIPTION AND USER’S MANUAL Note! Clean the fibre connector before it is connected, see instruction below. 2.5.1 Cleaning Optical Connectors Optical reflections from a discontinuity such as a poor connector interface appear on an RF spectrum analyzer trace as stable variations in the noise floor amplitude that are periodic with RF frequency.
AXELL MBF MULI-BAND FIBER REPEATER PRODUCT DESCRIPTION AND USER’S MANUAL 2.6 External Alarm and Relay Connections The repeater is equipped with an external alarm interface card. The connector plinth for the external alarms is located at the bottom of the repeater. The strain relief fitting in is a Pg 13.5 suitable for a 6-12 mm cable diameter. Connect the alarm cords to the plinth according to the pin layout below (in the standard version pins 14 – 18 are not used).
AXELL MBF MULI-BAND FIBRE REPEATER PRODUCT DESCRIPTION AND USER’S MANUAL 2.7 Power and Backup Battery Caution! Make sure the antenna cables or 50 ohm terminations are connected to the repeater’s antenna connectors before the repeater is turned on. The image below shows the location of the various power elements. These are described in detail in the following sections.
AXELL MBF MULI-BAND FIBER REPEATER PRODUCT DESCRIPTION AND USER’S MANUAL 2.7.2 230 VAC Power Source Connect the power cable to the plinth as show below: • Phase linked to the brown cable • Neutral linked to the blue • Ground to the yellow/green. See illustration below.
AXELL MBF MULI-BAND FIBRE REPEATER PRODUCT DESCRIPTION AND USER’S MANUAL 2.7.3 -48V Power Source Connection Note:The -48VDC version of the power supply is designed to turn off if the supply voltage falls below -36V (±1V), not to drain the feeding battery. It will turn on again as the supply voltage reaches -43V (± 1V). -48V power supply requirements The 48VDC power supply must comply with SELV requirements, as defined in EN60950, which implies double isolation.
AXELL MBF MULI-BAND FIBER REPEATER PRODUCT DESCRIPTION AND USER’S MANUAL 2.7.4 Backup Battery • 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 battery can be switched on and off. The switch is placed adjacent to the main power switch on the power supply.
AXELL MBF MULI-BAND FIBRE REPEATER PRODUCT DESCRIPTION AND USER’S MANUAL Note! On repeaters mounted in an extended box with two power supplies, both power supplies needs to be switched on. 2.8.2 Verifying LEDs Verify the LEDs from the following modules are indicating correct operation (5.1): • Control module • F/O converter • Power supply modules 2.9 Closing and Securing the Repeater Close lid, tighten screws and lock repeater, or continue with the next section: Start-up the Repeater.
AXELL MBF MULI-BAND FIBER REPEATER PRODUCT DESCRIPTION AND USER’S MANUAL 3 Commissioning Advice To set the proper operating RF levels on the repeaters in the MBF family during commissioning there are six steps to be carried out for each band of operation.
AXELL MBF MULI-BAND FIBRE REPEATER PRODUCT DESCRIPTION AND USER’S MANUAL Uplink Radio Module UMTS Downlink Optical In/Out MCPA UMTS RF O ~ ~ ~ ~ ~ ~ RF in/out ~ ~ ~ ~ ~ ~ Uplink Fiber Optic Converter Radio Module GSM 2x Duplex Filter Downlink MCPA GSM 3-2. Dual band repeater for E-GSM and UMTS 3.2 OMU Point of Interface (POI) The OMU will usually be fed from the donor BTS via an attenuator or coupling network.
AXELL MBF MULI-BAND FIBER REPEATER PRODUCT DESCRIPTION AND USER’S MANUAL The correct interface level at the optical fibre converter is -5dBm/carrier in 900MHz and 7dBm/carrier in both GSM1800 and UMTS bands. An attenuation of 48dB in 900MHz and 50dB in 1800/UMTS is therefore required between them.
AXELL MBF MULI-BAND FIBRE REPEATER PRODUCT DESCRIPTION AND USER’S MANUAL It must also be kept in mind that the OMU might have separated input/output ports for each band (UL/DL) while the interface with the BTS may well be duplex. In that case some duplexing network must be provided to allow these to be brought together.
AXELL MBF MULI-BAND FIBER REPEATER PRODUCT DESCRIPTION AND USER’S MANUAL GSM900: 2x+43dBm BS BS -30dB GSM900 GSM1800: 2x+43dBm UMTS: +43dBm -30dB UMTS -17dB (IL=14dB) 2x-5dBm UFOM #1 UFOM #3 UFOM #2 -7dBm 2x-7dBm Det Pwr (IL=16dB) -19dB (IL=16dB) -19dB Atten=3 UFOS OMU 2x+12dBm -1dB Comb Netw -1dB 2x+12dBm -1dB +12dBm LD Pilot tone 0..
AXELL MBF MULI-BAND FIBRE REPEATER PRODUCT DESCRIPTION AND USER’S MANUAL 3.6 UMTS Signal Measurement The UMTS signal carries wideband and complex modulation and its properties vary depending on the level of traffic carried. 3.6.1 Bandwidth The first issue is the wideband nature of the signal. It occupies around 3.8MHz and measurements through a narrower filter will reduce the apparent power level since only a portion of the signal reaches the detector in the test equipment.
AXELL MBF MULI-BAND FIBER REPEATER PRODUCT DESCRIPTION AND USER’S MANUAL 4 Setup © Axell Wireless Ltd 25
AXELL MBF MULI-BAND FIBRE REPEATER PRODUCT DESCRIPTION AND USER’S MANUAL 4.1 Open a Local Session Connect to the LMT port Connect the computer to the LMT port via a DB9 male connector with serial RS232 interface.
AXELL MBF MULI-BAND FIBER REPEATER PRODUCT DESCRIPTION AND USER’S MANUAL The Console mode view appears The console mode displays a large number of repeater parameters and contains a number of console pages. It adjusts its user interface to adapt to the features of the connected repeater. 4.2 Set Repeater Name (TAG) The TAG can be chosen freely to give the repeater a name that is linked to the location, the site name, etc. The TAG may contain up to 30 characters including spaces.
AXELL MBF MULI-BAND FIBRE REPEATER PRODUCT DESCRIPTION AND USER’S MANUAL 4.3 TCP/IP and Ethernet Communication A TCP/IP communication is run over a company’s network. Therefore each company needs to define the details regarding the configuration, IP addresses, etc. For more information please refer to Common Commands and Attributes, section 13 Network Configurations.
AXELL MBF MULI-BAND FIBER REPEATER PRODUCT DESCRIPTION AND USER’S MANUAL 4.4 Set-up RF Configuration Configuration of the repeater amplification can be made locally. If the repeater is connected to an OMU the configuration can also be made via this OMU. See OMU User’s Manual. Note! This is an example from a single band repeater. Other repeaters will have similar features.
AXELL MBF MULI-BAND FIBRE REPEATER PRODUCT DESCRIPTION AND USER’S MANUAL Configure the downlink ON -19.0dBm 33dBm Lower the attenuation level step by step until the desired output power level is reached. In this example +33 dBm. Zero attenuation is the same as maximum gain. Note! Please also consult the OMU User’s Manual. Initiate a fibre loss elimination This is done from the OMU by sending a pilot tone to the repeater and calculating the loss in the fibre link.
AXELL MBF MULI-BAND FIBER REPEATER PRODUCT DESCRIPTION AND USER’S MANUAL 4.5 For Stand-alone Repeaters – Modem Communication MODEM communication is relevant only for Repeaters installed in stand-alone mode. If the repeater is fibre fed and is set up as a slave- this section is not relevant since the remote communication is handled by the node master – in most cases an OMU. For instructions on modem setup and communication, refer to Chapter Modem Communication. 4.
AXELL MBF MULI-BAND FIBRE REPEATER PRODUCT DESCRIPTION AND USER’S MANUAL 5 Troubleshooting 5.1 Module LEDs 5.1.1 Control Module LEDs Modem Status Modem Power Status Login The Control Module has four LEDs which give information regarding the status of the OMU. If the OMU is configured for Ethernet communication the two LEDs Modem Power and Modem Status do not fill any function and can be disregarded.
AXELL MBF MULI-BAND FIBER REPEATER PRODUCT DESCRIPTION AND USER’S MANUAL Da t pt a o Rx O pt o Tx O Da ta DL UL PW There are 6 LEDs on the module to indicate the status. LED 1, Power, Green On Off LED 2, Error, Red On Off LED 3, UL Data, Yellow On Off LED 4, DL Data, Yellow On Off LED 5, Opto Rx, Green On Off LED 6, Opto Tx, Green On Off R ER R 5.1.
AXELL MBF MULI-BAND FIBRE REPEATER PRODUCT DESCRIPTION AND USER’S MANUAL Examples LED 1 is flashing slowly, LED 2 – 4 are flashing slowly (once every 10 seconds) => power supply unit is operating without problem Input Power +6V +15V +28V LED 1 is flashing slowly, one or two of the red LEDs are flashing quickly Input Power +6V +15V +28V => Input power is operating but there is a problem with some of the other voltages LED 1 is flashing slowly, all of the red LEDs are flashing quickly Input Power 3
AXELL MBF MULI-BAND FIBER REPEATER PRODUCT DESCRIPTION AND USER’S MANUAL 6 Maintenance Caution Please be aware that the equipment may, during certain conditions become very warm and can cause minor injuries if handled without any protection, such as gloves. Caution Risk of explosion if battery is replaced by an incorrect type. Dispose of used batteries according to local laws and instructions. Class 3B Laser This product is equipped with class 3B lasers, as per definition in EN 60825-1.
AXELL MBF MULI-BAND FIBRE REPEATER PRODUCT DESCRIPTION AND USER’S MANUAL 6.5 Product Disposal Disposal of this product must be handled according to all national laws and regulations. For detailed information regarding materials, please refer to Axell Wireless.
AXELL MBF MULI-BAND FIBER REPEATER PRODUCT DESCRIPTION AND USER’S MANUAL 7 Modem Communication Note! This section is relevant only for Repeaters installed in stand-alone mode. If the repeater is fibre fed and is set up as a slave- this section is not relevant since the remote communication is handled by the node master – in most cases an OMU.
AXELL MBF MULI-BAND FIBRE REPEATER PRODUCT DESCRIPTION AND USER’S MANUAL 7.4 Communication via Wireless Modem There are two different ways of communication for a wireless (GSM) modem: Using data call / modem connection. Note! This requires the SIM-card in the modem to be configured with data service. Using SMS to configure the repeater with simple text messages Note! SMS functionality is not implemented in this SW release.
AXELL MBF MULI-BAND FIBER REPEATER PRODUCT DESCRIPTION AND USER’S MANUAL 7.4.2 Modem Configuration, using GPRS Select “Configuration” and “Communication” Select GPRS Initialization string Connect times AEM addressed are set via the AEM Configure GPRS Select GPRS Set the modem initialization string. This string differs between networks. Primary recommendation is AT+CBST=71,0,1;\Q3 Tick “Enable Automatic Modem Power Cycling” for the modem to be power cycled once every 24 hours.
AXELL MBF MULI-BAND FIBRE REPEATER PRODUCT DESCRIPTION AND USER’S MANUAL Each parameter is described in Common Commands and Attributes, section 14 GPRS Configurations. Set the Access Point Name. It needs to be defined by the telecom operator Set Maximum Receive Unit and maximum Transmission Unit. These differ depending on access type: 576 for GSM, 1476 for EDGE and 1500 for WCDMA. Click on Close, and then on “Yes”. Wait for the modem to restart. This can take a few minutes.
AXELL MBF MULI-BAND FIBER REPEATER PRODUCT DESCRIPTION AND USER’S MANUAL Flashing (irregular) 75ms on/75ms off/75ms on/3s off 75ms on/3s off 600ms on/600ms off Off Indicates GPSR data transfer. When a GPRS transfer is in progress the LED goes on within 1 second after data packets were exchanged. Flash duration in approximately 0.5s. One or more GPRS contexts activated Logged to network (monitoring control channels and user interactions).
AXELL MBF MULI-BAND FIBRE REPEATER PRODUCT DESCRIPTION AND USER’S MANUAL Select Data Call Initialization string ATE0S0=0 Connect times AEM addressed are set via the AEM 2004-01-01 Tick “Enable Automatic Modem Power Cycling” for the modem to be power cycled once every 24 hours. Set the time at which the modem should be tested. This function ensures that the repeater always is logged in to the network. 7.
AXELL MBF MULI-BAND FIBER REPEATER PRODUCT DESCRIPTION AND USER’S MANUAL Radio LinkProtocol (RLP) Modem Laptop RS232 Base Station Interworking Function Unit (IFU) Control module in Axell Wireless Repeater Switch Centre 7.5.1 Direct Modem Access To allow for advanced trouble shooting of the communications, it is possible to access the modem directly via the Control Module from a laptop computer.
AXELL MBF MULI-BAND FIBRE REPEATER PRODUCT DESCRIPTION AND USER’S MANUAL To end session type CTRL-Z 7.5.3 Manually Answering Incoming Calls It is possible to manually answer incoming calls without involving the repeater software at all, to verify that the remote access and the network itself works as intended. In order to verify the remote communication, make sure to have someone stand by to dial up the repeater with a terminal emulation program, for example HyperTerminal™.
AXELL MBF MULI-BAND FIBER REPEATER PRODUCT DESCRIPTION AND USER’S MANUAL CONNECT 9600 This means that an online connection is established to the remote peer. From now on, all characters typed on the keyboard will end up on the remote peer’s screen. Similarly, all characters typed by the remote peer will be displayed on the screen. In the example, the incoming call was successfully answered, and the remote user entered the text message.
AXELL MBF MULI-BAND FIBRE REPEATER PRODUCT DESCRIPTION AND USER’S MANUAL Documentation of +CSQ command from a modem’s manual. In the example the reply to AT+CSQ is 0,7 meaning 7*2 dB above -113 dBm; the modem detects a signal level of -99 dBm. 7.5.4.3 Problem 2a Repeater is configured properly, and answers the incoming call, but when trying to dial the repeater using an analogue mode, no modem handshaking is heard from the dialling modem. 7.5.4.
AXELL MBF MULI-BAND FIBER REPEATER PRODUCT DESCRIPTION AND USER’S MANUAL If problem remains, try a few different modem initialization strings. Axell Wireless has been successful with the following modem initialization strings: AT+CBST=71,0,1;\Q3 AT+CBST=7,0,1;\Q3 AT+CBST=0,0,1;\Q3 AT+CBST=0,0,1;\Q3 AT+CBST=7,0,3;\Q3 Please refer to the modem manual for detailed description of the modem initialization strings. 7.5.4.
AXELL MBF MULI-BAND FIBRE REPEATER PRODUCT DESCRIPTION AND USER’S MANUAL 8 Specifications Note! All data is subject to change without prior notice. 8 .
AXELL MBF MULI-BAND FIBER REPEATER PRODUCT DESCRIPTION AND USER’S MANUAL Optical Module Electrical Specification Laser class Class 3B Optical power level +3dBm ±2dBm Optical Wavelength Two colour system Three colour system Four colour system Master 1310 ± 10 nm 1310 ± 10 nm 1310 ± 10 nm Slave 1 1550 ± 3 nm 1550 ± 3 nm 1530 ± 3 nm Slave 2 NA 1510 ± 3 nm 1510 ± 3 nm Slave 3 NA NA 1550 ± 3 nm Mechanical Specifications Dimensions 540 x 350 x 150 mm Enclosure Aluminium (IP 65) Weight
AXELL MBF MULI-BAND FIBRE REPEATER PRODUCT DESCRIPTION AND USER’S MANUAL 8.
AXELL MBF MULI-BAND FIBER REPEATER PRODUCT DESCRIPTION AND USER’S MANUAL Optical Module Electrical Specification Laser class Class 3B Optical power level +3dBm ±2dBm Optical Wavelength Two colour system Three colour system Four colour system Master 1310 ± 10 nm 1310 ± 10 nm 1310 ± 10 nm Slave 1 1550 ± 3 nm 1550 ± 3 nm 1530 ± 3 nm Slave 2 NA 1510 ± 3 nm 1510 ± 3 nm Slave 3 NA NA 1550 ± 3 nm Mechanical Specifications Dimensions 540 x 350 x 150 mm Enclosure Aluminium (IP 65) Weight
AXELL MBF MULI-BAND FIBRE REPEATER PRODUCT DESCRIPTION AND USER’S MANUAL 8.
AXELL MBF MULI-BAND FIBER REPEATER PRODUCT DESCRIPTION AND USER’S MANUAL Optical Module Electrical Specification Laser class Class 3B Optical power level +3dBm ±2dBm Optical Wavelength Two colour system Three colour system Four colour system Master 1310 ± 10 nm 1310 ± 10 nm 1310 ± 10 nm Slave 1 1550 ± 3 nm 1550 ± 3 nm 1530 ± 3 nm Slave 2 NA 1510 ± 3 nm 1510 ± 3 nm Slave 3 NA NA 1550 ± 3 nm Mechanical Specifications Dimensions 540 x 350 x 220 mm Enclosure Aluminium (IP 65) Weight