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RF Neulink NL6000 User Manual

Rf-link user manual wireless modem nl6000
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Summary of Contents for RF Neulink NL6000

  • Page 1 WWW.RFNEULINK.COM...
  • Page 2 Copyright Copyright © 2003 by RF Neulink. This manual may be reproduced for distribution with the NL6000 as long as the manual remains intact, in its entirety, with all appropriate Copyright, Intellectual property, and Trademark notices. This product contains intellectual property and copyrighted material owned by RF Neulink.

  • Page 3: Table Of Contents

    Setting the Transmit Frequency ... 30 RF Neulink TABLE OF CONTENTS ... 13 ... 16 ... 23 ... 24 ... 25 ... 25 ... 28 ... 28 ... 28 ... 29 ... 30 ... 17 ... 29 NL6000 User Guide...
  • Page 4 8.2.6. Use a Faster Baud Rate ... 44 8.2.7. Unit Does Not Enter Programming Mode ... 44 RF Neulink ... 31 ... 32 ... 32 ... 33 ... 33 ... 33 ... 35 ... 35 ... 37 ... 38 ... 38 ... 43 NL6000 User Guide...
  • Page 5 Setting the Power Value... 45 Setting the Frequency Trim (includes setting Power) ... 45 Setting the Deviation and Balance ... 46 Setting the Receive Gain... 47 Appendix B - Factory Default Parameters ... 49 Index ... 50 RF Neulink NL6000 User Guide...

  • Page 6: Product Overview

    1. Product Overview The RF Neulink NL6000 is an integrated radio modem that provides reliable bi- directional RS-232 data transmissions on a land mobile radio channel. Configurable RS-232, radio, and packet data parameters provide the NL6000 with the flexibility necessary for use in both simple and complex networks.

  • Page 7: Features

    The NL6000 s powerful and efficient packet communications protocol provides a solution to many of the problems affecting conventional wireless data networks. Bursts of noise, RF interference, inter-modulation, overload, and signal fade can corrupt and interrupt radio data links. The NL6000 eliminates these problems through the use of advanced technologies including sophisticated forward error correction technology.
  • Page 8 Acknowledgement Auto-Transmit Configuration Templates RF Neulink An NL6000 can be configured to transmit to a single unit, a group of units, or to broadcast to all units within range. NL6000 be configured to request acknowledgement (ACK) from the destination modem with each transmission.

  • Page 9: Regulatory Information

    FCC Part 90 The NL6000 has been type accepted for operation by the FCC in accordance with Part 90 of the FCC rules (47CFR Part 90). See the label on the unit for the specific FCC ID and any other certification designations.
  • Page 10 12,000 bps or 22,050 bps 1200 bps, 2400 bps, 4800 bps, 9600 bps, 19.2 kbps, 28.8 kbps, 38.4 kbps SMA-F 9-pin (DB9) RS-232 async Simplex or Half Duplex PLL synthesizer 3 data transmission modes provide progressively increasing error correction strength NL6000 User Guide...

  • Page 11: Specifications

    5% to 75%, depending upon voltage, power level, and ambient temperature 50 ohms Basic Telemetry Mode 109 dBm Enhanced Telemetry Mode 115 Mobile Data Mode 115 dBm 60dB min (narrow), 70dB min (wide) 70dB min 50 ohms NL6000 User Guide...
  • Page 12 RF load impedance Receiver: Sensitivity (95% reliability, 500 user data bytes per packet) Selectivity Intermodulation RF input impedance RF Neulink NL6000-VHF (148-174 MHz) NL6000-VHF1 (136-162 MHz) 136-162 MHz, 148-174 MHz 0.2 amps 0.2 amps 1.0 amps 1.3 amps 1.7 amps 2.1 amps...

  • Page 13: Hardware Installation And Operation

    Note: If you want to use an external power amplifier, contact the RF Neulink sales department. 4.3. Serial Port The serial port on the NL6000 is a 9 pin female connector. RF Neulink Description Antenna Connector USB Port (used by factory)
  • Page 14 The NL6000 is a Data Communications Equipment (DCE) device. Other equipment that can connect to the NL6000 via the serial port fall into one of the following categories: Connect a DTE device to the DB9 connector with a 9-pin male connector wired one-for-one as shown in Figure 4 and Figure 5.

  • Page 15: Antenna Connection

    You must connect a suitable antenna to the RF antenna connection. This antenna is used for both transmitting and receiving over-the-air messages. Caution: Do not operate the radio modem without an antenna. 4.5. LEDs Table 1 interprets the two LEDs on the NL6000. Color Tx/Rx Green None Amber Blinking...

  • Page 16: Technical Support

    How many frequencies are available? Which transmission mode should be used? You can configure the NL6000 as a remote or a base station. A remote is limited to transmitting data to a pre-programmed destination. A base station can transmit data to any remote using a destination ID specified in the data string it receives from the serial port.

  • Page 17: Unique Data Requirements For A Base Station

    If a reliable path does not exist between a remote unit and a base station, you can configure one or more NL6000 units as a repeater to reach the hidden unit. The repeater can work with both simplex and half duplex networks.

  • Page 18: Behavior Of Repeater Units

    MYID field. You can establish up to eight triggers for each repeater unit. RF Neulink in addition to its normal functions. A unit qualifies a packet for NL6000 User Guide...
  • Page 19 In Figure 12, a repeater entry with a Trigger = TOID and ID = 42FF repeats any packet with a destination matching TOID42FF. RF Neulink NL6000 User Guide...
  • Page 20 It is important that all units transmitting data to a repeater transmit on the repeater s receive frequency (F ), as shown in Figure 14. Figure 14: Sample Frequency Plan for a Repeater RF Neulink NL6000 User Guide...

  • Page 21: Packet Data Options

    CSMA. In this case, the delay must be large enough so the delayed repeater recognizes that the other repeater has started transmitting. 5.6. Packet Data Options 5.6.1. Transmission Mode The NL6000 supports the following three packet transmission modes: Basic Telemetry mode Enhanced Telemetry mode RF Neulink for transmissions from both the...
  • Page 22 Because you have a clean channel, use the mode that uses the least overhead for each packet. Basic Telemetry mode uses error detection only, so RF Neulink Basic Telemetry Enhanced Telemetry Mode Mode Table 2: Transmission Mode Characteristics Mobile Data Mode NL6000 User Guide...
  • Page 23 You expect noise bursts, RF interference, or signal fading to corrupt the radio data link. The remote unit is moving, or it is located in an area where the surroundings are moving, such as a busy street. RF Neulink NL6000 User Guide...

  • Page 24: Maximum Packet Size

    Packet Size and get better throughput on a very corrupt channel. 5.6.2. Maximum Packet Size The NL6000 transmits a data packet on the radio channel when the amount of data in the input buffer is equal to the Maximum Packet Size or when there is a timeout on the serial port.

  • Page 25: Carrier Sense Multiple Access

    Serial Connection to an I/O Device 5.7.1. Basic Serial Parameters The NL6000 can receive data strings from a variety of I/O devices through its RS232 serial port. Configure the NL6000 serial port parameters based upon how the I/O device will send data to the unit. The following is a list of the basic...

  • Page 26: Dcd Mode

    Performance Problems. 5.9. Factory Default Parameters Appendix B provides a list of the default parameters set for each NL6000 unit at the factory. It also provides a blank column for you to record any custom values you want to set.

  • Page 27: Procedures

    6. Procedures This section includes step-by-step procedures for configuring all the parameters that control the operation of the NL6000. The procedures are grouped into the following categories: General Procedures Radio Network Setup Serial Connection Setup Data Setup Repeater Setup File Management Configuration of the NL6000 parameters is easy using the menu-driven user interface.

  • Page 28: General Procedures

    Entering Programming Mode Perform this procedure when you need to reset any of the existing configuration parameters for the NL6000. Note: If the Programming Mode is Disabled, you must perform this procedure within five seconds of powering on the unit.

  • Page 29: Returning To The Previous Menu

    Main Menu using Exit, Continue, or Restart. Displaying the Configuration Summary Window Select 1 - Summary from the Main Menu. The summary window appears as in Figure 18. Figure 18: Summary Window RF Neulink NL6000 User Guide...

  • Page 30: Radio Network Setup

    RF Neulink Configure as a base station. This unit type receives the TOID from the data packet received through the serial port. Configure as a remote. This unit type receives the TOID from its configuration. FFFF. For more NL6000 User Guide...

  • Page 31: Serial Connection Setup

    In this mode the modem asserts the DCD line when it is receiving data over-the-air. In this mode the modem asserts the line when it is in a normal operating state and negates the line when it is in a programming state. NL6000 User Guide...

  • Page 32: Setting The Pre-Data Dcd Time

    This mode uses a simple Cyclic Redundancy Check (CRC) for error detection. This mode is similar to Basic Telemetry mode, but it includes Reed-Solomon forward error correction. This mode uses forward error correction and a block interleaver for maximum transmission reliability. 1023. NL6000 User Guide...

  • Page 33: Setting The Data Rate

    Do not use contention to determine when to transmit. Enable Carrier Sense Multiple Access (CSMA) so that transmission waits until the channel is free of contention. This option is helpful if a unit s transmit and receive frequencies are the same. NL6000 User Guide...

  • Page 34: Repeater Setup

    6.5. Repeater Setup Each NL6000 unit may have up to eight repeater entries. Each repeater entry includes a trigger, trigger ID, transmit channel, and transmit delay value. If a unit does not act as a repeater, do not set up any repeater entries.

  • Page 35: Setting The Repeater Trigger Id

    6.6. File Management Downloading a Software Upgrade The software that runs the NL6000 is stored in flash memory. There is room in the flash memory for two software versions. This allows you to keep the current software version while you download a new version. If the download is not valid, the unit can still run on the older version.

  • Page 36: Saving Parameters To Disk

    Press ESC to continue using the Main Menu. Saving Parameters to Disk If you want to duplicate parameter values on several NL6000 units, you can save the settings to disk and restore them to multiple units. Use the following procedure to save parameter values from the unit currently attached to the serial port.

  • Page 37: Restoring Default Parameters

    A success message appears when the restore is complete. When the download is complete, cycle power to let the modem start using the new parameter settings. Press ESC to continue using the Save/Restore Parameters menu. RF Neulink NL6000 User Guide...

  • Page 38: Menu Quick Reference

    7. Menu Quick Reference 7.1. Main Menu 7.2. Summary Window RF Neulink NL6000 User Guide...

  • Page 39: Serial Menu

    7.3. Serial Menu 7.4. DCD RS-232 SubMenu RF Neulink NL6000 User Guide...

  • Page 40: Network Menu

    7.5. Network Menu 7.6. Repeater SubMenu RF Neulink NL6000 User Guide...

  • Page 41: Radio Menu

    7.7. Radio Menu 7.8. Diagnostics Menu RF Neulink NL6000 User Guide...

  • Page 42: Save/Restore Parameters Menu

    7.9. Save/Restore Parameters Menu RF Neulink NL6000 User Guide...

  • Page 43: Other Considerations

    Duty Cycle When the NL6000 transmits data, it generates heat and the case gets warm. If the NL6000 is forced to transmit large amounts of data without a cooling-off period, damage due to excessive temperature can result. There are two considerations: first, limit data transmission time so that the unit will not overheat.

  • Page 44: Use A Fully-Wired Rs-232 Cable

    8.2.7. Unit Does Not Enter Programming Mode If you forget what baud rate the NL6000 is set to, you will not be able to get into the programming mode with the baud rates on your terminal. Instead, if you enter three break characters within 10 seconds on the terminal, the modem goes into programming mode at 9600 baud.

  • Page 45: Appendix A Diagnosing And Correcting Performance Problems

    6. Select None from the Diagnostics menu to stop the data transmission. Setting the Frequency Trim (includes setting Power) The power setting affects the frequency trim in the NL6000, so part of setting the frequency trim is setting the power.

  • Page 46: Setting The Deviation And Balance

    Press ESC to return to the Diagnostics menu. 6. Select None from the Diagnostics menu to stop the square wave. 7. Select Transmit Continuous Random Data from the Diagnostics menu. RF Neulink once near each edge of the transmit frequency band. 1023. NL6000 User Guide...

  • Page 47: Setting The Receive Gain

    (±0.5 dB) after your correction. 7. Disable the Receive Diagnostic Mode as follows: Select Diagnostics ä Receive Diagnostic Mode. Select 2-Disable. RF Neulink twice to return to the Main Menu to save the Receive Gain value and enter operating Exit NL6000 User Guide...
  • Page 48 Entry Transmit Channel Transmit Delay (ms) RF Neulink Parameter Table 5: Factory Default Values Default Value Custom Value Remote 1234 FFFF 9600 None Disabled 500 msec 500 msec Disabled Enhanced Telem 12000 bps Disabled CSMA MYID 0000 NL6000 User Guide...

  • Page 49: Appendix B - Factory Default Parameters

    Basic Telemetry, 24 considerations, 23 description of types, Enhanced Telemetry, 24 Mobile Data, 25 Packet Mode, 34 parts description, 13 performance problems correcting, 47 diagnosing, 47 Post-Data DCD Time, 34 power connections, 13 power output and duty cycle, 45 NL6000 User Guide...
  • Page 50 Summary window, 31, 40 support, technical, 16 TOID, 32 transmission mode. See packet mode Transmit Channel, 37 Transmit Character Timeout, 33 Transmit Delay, 22, 37 Transmit Frequency for Active Channel, Trigger, 36 troubleshooting, 45 Unit Type, 32 NL6000 User Guide...

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