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MDSLN700Integrator’sGuide 05‐6961A01,revision4

[1]

MDSLN700Integrator’sGuide

1.0INTRODUCTION

The LN700 (Figure 1), is a fixed location (not intended for mobile use), multi-modem system operating in licensed

bands between 757-758MHz and 787-788MHz, using channel bandwidths of 6.25kHz, 12.5kHz, 25.0kHz and 50kHz.

Modulation choices for each bandwidth include QPSK, 16QAM, and 64QAM. 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 LN700

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 LN700 maximizes performance and flexibility in wireless networks, offering the following key features:

 Selectable frequency (757-758MHz and 787-788MHz)

 Selectable bandwidth (6.25kHz, 12.5kHz, 25.0kHz, 50kHz)

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

 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. LN700 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.

Summary of content (7 pages)

PAGE 1
MDS LN700 Integrator’s Guide 1.0 INTRODUCTION The LN700 (Figure 1), is a fixed location (not intended for mobile use), multi-modem system operating in licensed bands between 757-758MHz and 787-788MHz, using channel bandwidths of 6.25kHz, 12.5kHz, 25.0kHz and 50kHz. Modulation choices for each bandwidth include QPSK, 16QAM, and 64QAM. Maximum power and modem speed is based on frequency, modem choice, and applicable emission mask.
PAGE 2
.0 INSTALLATION The transceiver is designed for installation in existing electronic equipment. The I/O and 5.0v 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.
PAGE 3
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.
PAGE 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 5.0 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): 1.3 Amperes Power Regulation must be met by OEM to satisfy LMA conditions: OEM Integrator should consult with Product Support for individual circuit implementations.
PAGE 5
.2 Regulatory Information, LN700 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.
PAGE 6
FCC Limited Modular Approval Notice This device is offered as an FCC Licensed Limited Modular Transmitter (LMA). Applicable rule parts include Part 90 and Part 101C. 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).
PAGE 7
5.3 RF Output Settings Consult Table 3 for the applicable power settings. The LN700 is a multi-modem system operating between 757758MHz and 787-788MHz, in channel bandwidths of 6.25kHz, 12.5kHz, 25.0kHz and 50kHz. Modulation choices in each bandwidth include QPSK, 16QAM, and 64QAM. OTA Rate and maximum power is based on the modem choice and the applicable emission mask for the operating frequency. Bandwidth Modem QPSK kHz symbols (x2) per second OTA bps 6.25 4800 9600 12.5 9600 19200 12.5 10000 20000 25.