GE MDS DS-LN900-1 Industrial Radio Module User Manual

GE MDS, LLC Industrial Radio Module Users Manual

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Users Manual

MDSLN900Integrator’sGuide 05‐6739A01,revision6

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MDSLN900Integrator’sGuide

1.0INTRODUCTION

The LN900 (Figure 1) is a fixed location (not intended for mobile use), multi-modem system operating in licensed

bands between 896-960MHz, using channel bandwidths of 6.25kHz, 12.5kHz, 25.0kHz, and 50kHz. Modulation

choices for each bandwidth include QPSK, 16QAM, 64QAM and 3-level FSK. Maximum power and modem speed is

based on frequency, modem choice, and applicable emission mask. Transmit operation in a normal running system is

governed by a Media Access Control Protocol, with distributed control functionality between AP and remotes, such

that all stations act to control the emissions and operation of other stations in the system.

The unit is designed for use inside data equipment to provide reliable connectivity in wireless networks. The LN900

power control circuit ensures that the RF output is linear and never exceeds +41 dBm at the antenna connector. The

module is designed for OEM use only. Host systems must be professionally installed. Host systems must be factory

configured by the OEM to operate at the correct frequency and output power setting. Refer to the table at the end of

this guide to determine applicable antenna types and the RF output power allowed.

1.1TransceiverFeatures

The LN900 maximizes performance and flexibility in wireless networks, offering the following key features:

 Selectable frequency (896-960MHz)

 Selectable bandwidth (6.25kHz, 12.5kHz, 25.0kHz, 50.0kHz)

 Selectable modem choices (QPSK, 16QAM, 64QAM, 9600, 19200)

 RSSI and EVM readback indicators

 Store-and-Forward repeater operation

 Same hardware for Master, Remote, or Store-and-Forward configurations

 Supports RS/EIA-232(TTL), Ethernet, and USB user interfaces

 Operates at 5.0 Vdc at the MiniPCIe card edge power connections and 10-60Vdc at the 3-pin power

connector.

Figure 1. LN900 Transceiver Module

(Mini PCI-Express Card Edge for Data/Power/& I/O and J700 Antenna)

NOTE: Some features may not be available on all units, based on the options purchased, or regulatory constraints in

the country of operation.

MDSLN900Integrator’sGuide 05‐6739A01,revision6

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2.0INSTALLATION

The transceiver is designed for installation in existing electronic equipment. The I/O and 5.25v power connections are

made through the Mini PCI-Express card edge. The 10-60v power is provided through a separate 3-pin connector on

the bottom of the module. The transceiver mounts to the host heatsink assembly using two #4 screws inside the RF

can area. The required heatsink contact area on the bottom surface of the PCB has the solder mask removed for

proper heat transfer.

Only one cable connection is required to the radio for the J700 Antenna connector. The module has three optionally

populated status LEDs (CR100, CR101, and CR1000) that indicate operating mode details. These LEDs provide

important information that is useful during startup and optimization of the radio link.

Antennas used with the radio can be either a Yagi directional type (often used at remote sites) or an omni-directional

type used for short range applications or at Master stations. Contact your sales representative for information on

available antennas.

Follow these steps to install the transceiver module:

1. Power down the Host assembly the module is being installed in to.

2. Mate the MiniPCIe card edge of the module into the socket on the Host assembly.

3. Secure the module to the heatsink surface using two #4 screws through the mounting holes in the corners of

the RF can area on the radio’s PC board.

4. Install the RF shield over the transceiver section.

5. Select and install an appropriate antenna and feedline for your system coverage requirements.

6. Connect the antenna coaxial lead to J700 on the module. It accepts a Type-TNC male coaxial connector.

7. Host Power Supply Requirements:

a. Input power applied on the 52-pin connector (J1100) must be a regulated 5.25 Vdc (-/+0.05 V).

b. Input power applied on 3-pin connector (J900) must not exceed the range 10.0-60.0Vdc

i. Nominal Input power on J900 is in the range 12-52Vdc - FCC CFR 47 2.1055(d)(1)

See Table 1 for power supply interface connections.

52-Pin GE MDS NIC Card Edge

Pin Description

1, 6, 7, 10, 11, 13, 12, 14,

16, 19, 20, 23, 25, 28, 30,

31, 32, 33, 36, 38, 42, 44,

45, 46, 47, 48, 49, 51

GPIO

(Includes Ethernet &

Serial)

*Consult Factory

Documentation for

specific details

2, 24, 39, 41, 52 +5.25

3, 5, 8, 17, 22 NC

4, 9, 15, 18, 21, 26, 27,

29, 34, 35, 37, 40, 43, 50 GND

Table 1. LN900 Power Supply Connections

8. Set the radio’s basic configuration with a PC terminal through the Host system. The essential settings for all

transceivers are (See Section 3 for commands):

 Frequency, Bandwidth, Modem, Power, and Operating Mode

3-Pin GE MDS (J900) connecto

Pin Description

1GND

2, 3 +10.0-60.0V

MDSLN900Integrator’sGuide 05‐6739A01,revision6

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9. In a normally operating system, you will see the CR101 POWER LED turn on at start-up.

10. Optimize the installation by checking:

 Antenna aiming and RSSI check

 Optimal modem rate setting

3.0RADIOPROGRAMMING

There are no manual adjustments on the radio. All programming and control is performed through a PC connected to

the Host platform that interfaces with the radio’s J1100 MiniPCIe card edge connector.

3.1UserCommands

The following tables provide descriptions of the various user commands for the transceiver.

CommandDescriptionNotes

ABOUTDisplaysNICversionbuildtimeanddate.

HELPDisplaysallavailablecommands.

RESETSoftwarereset.

SERDisplaytheNICserialnumber.

MODEMDisplay/setNICmodemselection. [4QAM,16QAM,64QAM,9600,19200

]

BAUDDisplay/setNICsymbolbaudrateselection. [4800, 9600, 10000,16000,19200,

20000,40000]

TESTADDRRead/writetestaddress. [0‐7]Addressusedfortests(e.g.PER

)

TESTPERStartsaPacketErrorRateTest. [‐a]Destinationtestaddress

[‐n]Numberofpacketstosend

[‐l]Lengthofeachpacket

UPTIMEDisplaytheamountoftimesincelastpower

cycle.

MDMKEYTransmitsun‐modulatedCW

MDMKEYRTransmitsmodulatedrandomdata

MDMKEYLOTransmitspassthroughofLOthroughTX

chain

MDMDKEYDisablesactivetransmission

MDMPRBURSTTransmitsamodulatedrandomdataburst

of511bytes,usefulfortrainingthereceiver

equalizer

MDMRSSI!InstantaneousRSSIreading dB

OPMODE[TEST,

MAC1/2,IDLE]

Display/setNICoperatingmode.



TestModeusedforEngineeringand

ManufacturingTest;IdleMode=unit

disabled.MAC1/2fornormaloperation

TX[val]Read/writeTXfrequency [val]‐ frequencyinMHz

RX[val]Read/writeRXfrequency [val]‐ frequencyinMHz

TCXO[arg1]ChangeTCXOtuningvoltage [arg1]‐ Tuningvoltagein



TCXOCAL[arg1]CalibrateTCXOtuningvoltage [arg1]‐ Tuningvoltagein



Table 2. LN900 User Commands

MDSLN900Integrator’sGuide 05‐6739A01,revision6

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4.0DCINPUTREQUIREMENTS

4.1PowerConsumptionRatings

The module has the following nominal power consumption ratings when operated at the required (V_NIC) input

voltage of 5.25 Vdc (-0.05/+0.05 V tolerance) and the required secondary input voltage of 10.0-60.0 Vdc on J900:

Active Receive Mode: 130mA

Transmit Mode (Worst Case Load): 1.6 Amperes

PowerRegulationmustbemetbyOEMtosatisfyLMAconditions:

OEM Integrator should consult with Product Support for individual circuit implementations. The input voltage on the 3-

pin J900 connector accepts a wide range and routes to onboard regulator on the LN900 module, but the V_NIC input

on the 52-pin connector must be carefully regulated.

At minimum, OEM Integrators must regulate the DC voltage applied to +5.25 Vdc (V_NIC), with a tolerance

of -0.05/+0.05 Vdc. This can be achieved using a voltage regulator similar to the Texas Instruments LMR12020,

which is a precision DC regulator. The external +5.25 VDC input is connected via pins 2, 24, 39, 41, and 52 of the 52

pin MiniPCIe card edge connector. The transmitter uses a closed-loop power detection circuit that ensures the peak

RF power will never exceed +41dBm.

The input voltage range of the LMR12020 device in this configuration is 10V to 15V. Using switched-mode power

conversion technology, the LMR12020 can step down to voltages as low as 1.13V from a 10V input bus, with typically

less than 1 W of power dissipation. The output voltage must be set to a voltage of 5.25V, using an external trim

resistor. Operating features of the TI device include cycle-by-cycle current limiting, under-voltage lockout (UVLO),

on/off inhibit, output overcurrent protection, and over-temperature protection.

For example purposes, a circuit employing this method of regulation is shown below in schematic form.

5.0REGULATORYANDRFOUTPUTPOWERREQUIREMENTS

5.1TechnicalAssistance

Factory technical assistance is available by contacting GE MDS during business hours (8:30 AM to 6:00 PM Eastern

Time). Use one of the following means to contact the factory:

Telephone: (585) 241-5510

FAX: (585) 242-8369

E-mail: gemds.techsupport@ge.com

Web: www.gemds.com

MDSLN900Integrator’sGuide 05‐6739A01,revision6

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5.2RegulatoryInformation,LN900Module



FCCPart15Notice

This Equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15

of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the

equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio

frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful

interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful

interference in which case users will be required to correct the interference at their own expense.

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this

device may not cause harmful interference, and (2) this device must accept any interference received; including

interference that may cause undesired operation.

Warning: Changes or modifications not expressly approved by the manufacturer could void the user’s authority to

operate the equipment

ServicingPrecautions

When servicing energized equipment, be sure to wear appropriate Personal Protective Equipment (PPE). During

internal service, situations could arise where objects accidentally contact or short circuit components and the

appropriate PPE would alleviate or decrease the severity of potential injury. When servicing radios, all workplace

regulations and other applicable standards for live electrical work should be followed to ensure personal safety.

ManualRevisionandAccuracy

This manual was prepared to cover a specific version of firmware code. Accordingly, some screens and features may

differ from the actual unit you are working with. While every reasonable effort has been made to ensure the accuracy

of this publication, product improvements may also result in minor differences between the manual and the product

shipped to you. If you have additional questions or need an exact specification for a product, please contact GE MDS,

using the information provided in section 5.1 Technical Assistance above.

EnvironmentalInformation

The manufacture of this equipment has required the extraction and use of natural resources. Improper disposal may

contaminate the environment and present a health risk due to hazardous substances contained within. To avoid

dissemination of these substances into our environment and to limit the demand on natural resources, we encourage

you to use the appropriate recycling systems for disposal. These systems will reuse or recycle most of the materials

found in this equipment in a sound way. Please contact GE MDS or your supplier for more information on the proper

disposal of this equipment.

ProductTestDataSheets

Test Data Sheets showing the original factory test results for this unit are available upon request from the GE MDS

Quality Leader. Contact the factory using the information at the back of this manual. Serial numbers must be provided

for each product where a Test Data Sheet is required.



GroundingRequirements

To minimize the chance of damage to the unit and connected equipment, a safety ground (NEC Class 2 compliant) is

recommended which bonds the antenna system, chassis, power supply and connected data equipment to a single-

point ground, keeping all ground leads as short as possible. Normally, the unit is adequately grounded if the supplied

mounting brackets are used to mount it to a well-grounded metal surface. If the unit is not mounted to a grounded

surface, it is recommended that a safety ground wire be attached to one of the mounting brackets or a screw on the

enclosure. The use of a lightning protector is recommended where the antenna cable enters the building. Bond the

protector to the tower/support ground, if possible.

All grounds and cabling must comply with applicable codes and regulations.

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MDSLN900Integrator’sGuide 05‐6739A01,revision6

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FCCLimitedModularApprovalNotice

This device is offered as an FCC Licensed Limited Modular Transmitter (LMA). Applicable rule parts include Part 90,

Part 101C, and Part 24D. The transmitter module is approved for use only with specific antenna, cable and output

power configurations that have been tested and approved for use when installed in devices approved by third-party

OEMs, or produced by the Grantee (GE MDS). Modifications to the radio, the antenna system, or power output, that

have not been explicitly specified by the manufacturer are not permitted, and may render the radio non-compliant with

applicable regulatory authorities. When this module is placed inside an enclosure, a durable label must be affixed to

the outside of the final host device and shall be labeled with “Contains FCC ID: E5MDS-LN900-1, Contains IC:

101D-LN900” indicating the module’s FCC ID & IC Numbers.

Note: A host product is required to comply with all applicable FCC & Industry Canada equipment authorizations

regulations and/or requirements and equipment functions not associated with the transmitter module portion. For

example requirements for any co-location of additional transmitter with the module and/or at the minimum compliance

with FCC part 15B & IC ICES-003; Digital device are the sole responsibility of the OEM integrators for the final host

device.

RFExposureWarnings

The antenna(s) to be used with this module must be installed with consideration to the guidelines for RF exposure

risk to all nearby personnel, and must not be co-located or operating in conjunction with any other antenna or

transmitter.

Concentrated energy from a directional antenna may pose a health hazard to humans. Do not allow people to come

closer to the antenna than the distances listed in the table below when the transmitter is operating. More information

on RF exposure can be found online at the following website: http://www.fcc.gov/encyclopedia/radio-frequency-safety

and http://www.hc-sc.gc.ca/ewh-semt/consult/_2014/safety_code_6-code_securite_6/final_finale-eng.php

Concentré d'énergie à partir d'une antenne directionnelle peut poser un risque pour la santé humaine. Ne pas

permettre aux gens de se rapprocher de l'antenne que les distances indiquées dans le tableau ci-dessous lorsque

l'émetteur est en marche. Plus d'informations sur l'exposition aux RF peut être trouvé en ligne à l'adresse suivante:

http://www.fcc.gov/encyclopedia/radio-frequency-safety et http://www.hc-sc.gc.ca/ewh-

semt/consult/_2014/safety_code_6-code_securite_6/final_finale-eng.php

ntenna Gain *

0-5 dBi 5-10 dBi 10-16.5 dBi

Safety Distance

LN900 1.078 meters 1.917 meters 4.051 meters

* Values are based on 41.0 dBm at 896.0MHz, using 100% duty cycle. Note that these values include margin for

acceptable tolerance and are extremely conservative. QAM modulation peak-to-average ratio and duty cycle due to

media access control ensure that this limit is never reached in a real customer-accessible operating mode.

Calculations are based on the more restrictive limits associated with Canada Safety Code 6 regulations.

Antennas with gain greater than 16.5 dBi have not been authorized for this device. Installation of the device into

portable applications is not authorized.

For fixed point-to-point applications all requirements in IC SRSP-501 section 6.3.2 must be followed. Note that the

maximum ERP shall be limited to that which is required to achieve system reliability requirements and shall not

exceed 125 watts. Antennas with gain that violate this requirement are not permitted.

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MDSLN900Integrator’sGuide 05‐6739A01,revision6

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5.3RFOutputSettings

Consult Table 3 for the applicable power settings. The LN900 is a multi-modem system operating between 896-

960MHz, in channel bandwidths of 6.25kHz, 12.5kHz, 25.0kHz, and 50kHz. Modulation choices in each bandwidth

include QPSK, 16QAM, 64QAM 3-level FSK. OTA Rate and maximum power is based on the modem choice and the

applicable emission mask for the operating frequency.

Bandwidth

kHz Modem

symbols

per

second

OTA

bps

QPS

(x2)

OTA

bps

16QAM

(x4)

OTA

bps

64QAM

(x6)

OTA

bps

Maximum

Output

Power

Comments / Restrictions

6.25 4800 9600 19200 28800 41 dBm Max. Rate depends on operating frequency

12.5 9600 19200 38400 57600 41 dBm Max. Rate depends on operating frequency

12.5 10000 20000 40000 60000 41 dBm Max. Rate depends on operating frequency

25.0 16000 32000 64000 96000 41 dBm Max. Rate depends on operating frequency

25.0 20000 40000 80000 120000 41 dBm Max. Rate depends on operating frequency

50.0 40000 80000 160000 240000 41 dBm Max. Rate depends on operating frequency

12.5 9600 9600 41 dBm Max. Rate depends on operating frequency

25 19200 19200 41 dBm Max. Rate depends on operating frequency

Table 3. LN900 Power Output

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GE MDS DS-LN900-1 Industrial Radio Module User Manual

GE MDS, LLC Industrial Radio Module Users Manual

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