1. Manuals
  2. Brands
  3. FreeWave Manuals
  4. Transceiver
  5. LRS455 SERIES
  6. User manual

FreeWave LRS-455 User Manual

Data transceiver
Hide thumbs Also See for LRS-455:
Table of Contents

Advertisement

Quick Links

Download this manual See also: Installation Manual
LRS-455 Data Transceiver Manual
FreeWave Technologies
LRS-455
Data Transceiver
Version 1.0
FreeWave Technologies, Inc.
1880 South Flatiron Court
Boulder, CO 80301
(303) 444-3862
(303) 786-9948 Fax
www.FreeWave.com
LUM0016AA Rev A
Version 1.0
i

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the LRS-455 and is the answer not in the manual?

Questions and answers

Related Manuals for FreeWave LRS-455

Summary of Contents for FreeWave LRS-455

  • Page 1 LRS-455 Data Transceiver Manual FreeWave Technologies LRS-455 Data Transceiver Version 1.0 FreeWave Technologies, Inc. 1880 South Flatiron Court Boulder, CO 80301 (303) 444-3862 (303) 786-9948 Fax www.FreeWave.com LUM0016AA Rev A Version 1.0...
  • Page 2 (RMA) for evaluation of Warranty Coverage. In no event will FreeWave Technologies Inc., its suppliers, and its licensors be liable for any damages arising from the use of or inability to use this Product. This includes business interruption, loss of business information, or other loss which may arise from the use of this Product.
  • Page 3 Failure to comply with these instructions may void the user’s authority to operate this device. Note: The LRS-455 transceivers are approved for use in Canada within the 450MHz to 470MHz band. CAUTION: The LRS-455 series transceiver have maximum transmitted output power of 2W.

  • Page 4: Table Of Contents

    LRS-455 Data Transceiver Users Manual Table of Contents ABOUT FREEWAVE TRANSCEIVERS.........................6 CHOOSING A LOCATION FOR THE TRANSCEIVERS..................6 ................7 HOOSING OINT OINT OR OINT ULTI OINT PERATION QUICK START ON A POINT-TO-MULTIPOINT NETWORK ................8 ........................8 OINT ULTI OINT PERATION QUICK START ON A POINT-TO-POINT NETWORK..................9 ...........................9...
  • Page 5 LRS-455 Data Transceiver Users Manual RS-422 and RS-485 Full Duplex Pin-Outs ......................30 RS-485 Half Duplex Pin-Outs..........................30 RS232 P ............................30 SSIGNMENTS RF B ..............................31 OARD INOUT ..........................31 ECHNICAL UPPORT LUM0016AA Rev A Version 1.0...

  • Page 6: About Freewave Transceivers

    Placement of the FreeWave transceiver is likely to have a significant impact on its performance. The key to the overall robustness of the radio link is the height of the antenna. In general, FreeWave units with a higher antenna placement will have a better communication link. In practice, the transceiver should be placed away from computers, telephones, answering machines and other similar equipment.

  • Page 7: Choosing Point-To-Point Or Point-To-Multipoint Operation

    LRS-455 Data Transceiver Users Manual Choosing Point-to-Point or Point-to-MultiPoint Operation A Point-to-Point network is limited to one Master and one Slave transceiver. In a Point-to-MultiPoint network (also referred to as MultiPoint network) the transceiver, designated as a Master, is able to simultaneously communicate with numerous Slaves. In its simplest form, a MultiPoint network functions with the Master broadcasting its messages to all Slaves and the Slaves responding to the Master when given data by the device connected to the data port.

  • Page 8: Quick Start On A Point-To-Multipoint Network

    Set FreqKey, Max Packet Size, Min Packet Size, RF Data rate identical on all radios in the network. Note: Changing these values may help to eliminate interference from other FreeWave networks. • Press Esc to get back to Main menu.

  • Page 9: Quick Start On A Point-To-Point Network

    FreeWave Wireless Data Transceivers just received from the factory: Connect antennas to the transceivers. Freewave Technologies recommends that the antenna port be loaded at all times to prevent damage to the LRS-455 radios. Noise potential may be reduced on the bench by lowering the Xmit power.

  • Page 10: Setting Up A Transceiver

    Operation Mode The Operation Mode option designates the method FreeWave transceivers use to communicate with each other. FreeWave transceivers operate in a Master to Slave configuration. Before the transceivers can operate together, they must be set up to properly communicate.
  • Page 11 Point-to-Point Mode 6 allows the transceiver to be controlled entirely through software Slave/Master commands. A number of key parameters in FreeWave's user interface may be Switchable (6) changed either directly with a program such as Windows Terminal or through the use of script files.

  • Page 12: Baud Rate

    LRS-455 Data Transceiver Users Manual Baud Rate This setting is the communication rate between the transceiver and the instrument to which it is connected. It is important to note that this is independent of the baud rate for the other transceiver(s) in the network.
  • Page 13 There are six data word length and parity configurations available to be used with Data, Parity FreeWave transceivers. The default setting is 0 (8, N, 1) and is the most commonly used serial communications protocol. Select the appropriate option to communicate with the end device.
  • Page 14 LRS-455 Data Transceiver Users Manual Both Ports The terminal may be connected to either port. Setup mode is invoked by sending a "U" (capital) to the Diagnostics port or by pressing/toggling the Set-up button/switch, if available. OEM boards may also enter Setup when Pin 2 is grounded.

  • Page 15: Call Book

    The Master must be programmed to call the Slave. The Call Book allows users to incorporate up to 10 FreeWave transceivers, and designate which Slave the Master will call. To set the Entry to Call option, select the appropriate option in the drop down.

  • Page 16: Radio Transmission Characteristics

    The 400MHz Data Transceiver has the option to operate in a Frequency Division Duplex mode by transmitting on one frequency and receiving on another. The LRS-455 transceivers must be programmed to operate on the appropriate frequency. To program the transceiver for single channel operation, enter the frequency, in Megahertz, into the TX and RX Frequency slots.

  • Page 17: And (2) Max Packet Size And Min Packet Size

    LRS-455 Data Transceiver Users Manual (2) M ACKET IZE AND ACKET The Max and Min Packet Size settings and the RF Data Rate determine the number of bytes in the packets. Throughput can be enhanced when packet sizes are optimized.

  • Page 18: Xmit Rate

    (4) RF D FreeWave transceivers have five settings for the RF Data Rate (1, 2, 3, 4, 5 ). RF Data Rate should not be confused with the serial port Baud Rate. Setting 2 should be used when the transceivers are close together and data throughput needs to be optimized.

  • Page 19: Rts To Cts

    Note: Setting Retry Time Out to 20 is recommended in areas where several FreeWave networks exist. This setting will allow Slaves to drop the connection if the link becomes too weak, while at the same time prevent errant disconnects due to interference from neighboring networks.

  • Page 20: Lowpower Mode

    When a noise problem is shown to be helped by way of the High Noise option, chances are that the noise may be further squelched by use of a band pass filter available for sale from FreeWave Technologies. LUM0016AA Rev A...

  • Page 21: (C) Remote Led

    LRS-455 Data Transceiver Users Manual (C) R EMOTE This setting enables the user to connect Remote LED’s through the diagnostics port. This feature is available in firmware versions 2.64 (900MHz) and 3.64 (2.4GHz) or higher. Setting Description Notes Board LED’s Default.

  • Page 22: Multipoint Parameters

    EPEATERS The Repeaters selection must be set to On if a repeater is to be used in the network. However, if the network will not utilize a repeater, FreeWave recommends setting Repeaters to Off to provide higher throughput. (1) M...

  • Page 23: Max Slave Retry

    LRS-455 Data Transceiver Users Manual (2) M LAVE ETRY The Max Slave Retry setting defines how many times (0 to 9) the Slave will attempt to retransmit a packet to the Master before beginning to use a back-off algorithm (defined by the Retry Odds setting). Slave retries will stop when an acknowledgement is received from the Master.

  • Page 24: Pps Enable/Delay

    A second computer or serial connection to run the diagnostics software. A diagnostics cable. (Available from FreeWave Technologies.) Diagnostics software. (Available on the User Manual and System Tools CD.) For more information on Diagnostics, please contact FreeWave Technical Support at (303) 381-9200. (C) S UBNET The Subnet ID function only works in MultiPoint Networks utilizing the Network ID option.

  • Page 25: (D) Radio Id

    LRS-455 Data Transceiver Users Manual Rcv Subnet ID. This setting identifies which transceiver a Repeater or Slave will listen to. Xmit Subnet ID. This setting identifies the ID on which this device transmits, and in turn which devices will listen to it. The Xmit Subnet ID parameter is relevant for MultiPoint Repeaters only.

  • Page 26: Radio Information

    LRS-455 Data Transceiver Users Manual Radio Information Radio Statistics in the Main Menu allows the user to view data transmission statistics gathered by the transceiver during the most recent session. This is valuable when the user needs to know the signal strength and noise levels of the link.

  • Page 27: Average Signal Level

    ADIO EMPERATURE The Radio Temperature value is the current operating temperature of the transceiver in degrees Celsius. For proper operation, a FreeWave transceiver must be in the temperature range of -30° to +60° C. LUM0016AA Rev A Version 1.0...

  • Page 28: Factory Default Settings

    LRS-455 Data Transceiver Users Manual Factory Default Settings FreeWave 455MHz transceivers are shipped from the factory with the following Default Settings: Operation Mode Default MultiPoint Parameters Default Point to Point Slave (1) MASTER PACKET REPEAT 0 Set Baud Rate Default...

  • Page 29: Operational Rs-422 And Rs-485 Information

    The most common operation of RS-485 is a two-wire comprised of a 120 ohm impedance single twisted pair. In this system the loading of the FreeWave transceiver is as described above which allows up to 256 1/8 unit load units on the bus. Maximum line length is also 4,000 feet with a third wire required for data common.

  • Page 30: Rs232 P In A Ssignments

    LRS-455 Data Transceiver Users Manual RS-422 RS-485 F UPLEX Function Bare Board Pin Number DE-9 Pin Number Signal Ground 4 or 6 RS-485 H UPLEX Function Bare Board Pin Number DE-9 Pin Number Wire to both pins for Bus +...

  • Page 31: Freewave Technical Support

    For up-to-date troubleshooting information check the Support page at www.FreeWave.com. FreeWave provides Technical Support, Monday through Friday, 8:00 AM to 5:00 PM, Mountain Time (GMT -7) Call us toll-free at 1-800-548-5616 or factory direct after hours at 303-444-3862 or email us moreinfo@FreeWave.com...
  • Page 32 LRS-455 Data Transceiver Users Manual Frequency List The LRS-455 transceivers tune from 435MHz to 470MHz with a tuning resolution of 6.25KHz. This gives a total of 5600 available channels. Using the license allowed frequency, the channel number can be determined using the following formula.
  • Page 33 LRS-455 Data Transceiver Users Manual Channel# Frequency Channel# Frequency Channel# Frequency 437.625 2480 450.500 4540 463.375 437.750 2500 450.625 4560 463.500 437.875 2520 450.750 4580 463.625 438.000 2540 450.875 4600 463.750 438.125 2560 451.000 4620 463.875 438.250 2580 451.125 4640 464.000...
  • Page 34 LRS-455 Data Transceiver Users Manual Channel# Frequency Channel# Frequency Channel# Frequency 441.125 3040 454.000 5100 466.875 1000 441.250 3060 454.125 5120 467.000 1020 441.375 3080 454.250 5140 467.125 1040 441.500 3100 454.375 5160 467.250 1060 441.625 3120 454.500 5180 467.375 1080 441.750...
  • Page 35 LRS-455 Data Transceiver Users Manual Channel# Frequency Channel# Frequency 1540 444.625 3600 457.500 1560 444.750 3620 457.625 1580 444.875 3640 457.750 1600 445.000 3660 457.875 1620 445.125 3680 458.000 1640 445.250 3700 458.125 1660 445.375 3720 458.250 1680 445.500 3740 458.375...

Table of Contents