GE MDS DS-LN700 Industrial Radio Module User Manual

GE MDS LLC Industrial Radio Module Users Manual

Users Manual

MDS LN700 Integrator’s Guide 05-6961A01, revision 2
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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 (Guard Band BLOCK A), using channel bandwidths of 6.25kHz,
12.5kHz, and 25.0kHz.
Available Channel Range is defined as follows:
BW
Min. Freq
Max. Freq
Low Band Range
6.25KHz
757.06875 MHz
757.93125MHz
High Band Range
6.25KHz
787.06875 MHz
787.93125MHz
Low Band Range
12.5KHz
757.06875 MHz
757.93125MHz
High Band Range
12.5KHz
787.06875 MHz
787.93125MHz
Low Band Range
25.0KHz
757.06875 MHz
757.93125MHz
High Band Range
25.0KHz
787.06875 MHz
787.93125MHz
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)
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
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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.
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.
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.
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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 5.0 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
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
2, 24, 39, 41, 52
3, 5, 8, 17, 22
4, 9, 15, 18, 21, 26, 27,
29, 34, 35, 37, 40, 43, 50
Table 1. LN700 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
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-Pin GE MDS (J900) connector
Pin
Description
1
GND
2, 3
+10.0-60.0V
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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]
BAUD
Display/set NIC symbol baud rate selection.
[4800,9600,10000,16000,20000]
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 V
TCXO CAL [arg1]
Calibrate TCXO tuning voltage
[arg1] - Tuning voltage in V
Table 2. LN700 User Commands
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
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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 LN700 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 +5.0 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 +5.0 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 5.0V, 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
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
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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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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). 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-LN700” indicating the
module’s FCC ID Numbers.
Note: A host product is required to comply with all applicable FCC 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.
Antenna Gain *
0-5 dBi
5-10 dBi
10-16.5 dBi
Safety Distance
LN700
0.79 meters
1.41 meters
2.98 meters
* Values are based on 41.0 dBm at 757.0MHz, 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 as per FCC KDB 447498 D01 and Section 2.1091, with General Public Uncontrolled Exposure
Limits defined in Section 1.1310
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.
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5.3 RF Output Settings
Consult Table 3 for the applicable power settings. The LN700 is a multi-modem system operating between 757-
758MHz and 787-788MHz, in channel bandwidths of 6.25kHz, 12.5kHz, and 25.0kHz. 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
kHz
Modem
symbols
per
second
QPSK
(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
Table 3. LN700 Power Output

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