Benutzerhandbuch für Murata Electronics North America 910M

Inhaltsverzeichnis

• 1. INTRODUCTION

  6
• 1.1. Why Spread Spectrum?

  6
• 1.2. Frequency Hopping vs. Direct Sequence

  7
  • 2. RADIO OPERATION

    9
• 2.1. Synchronization and Registration

  9
• 2.2. Data Transmission

  10
  • 2.2.1. Point-to-Point

    10
    • 2.2.2. Point-to-Multipoint

      11
      • Handle Assignment

        11
        • 2.2.4. TDMA Operation

          12
          • 2.2.5. Full Duplex Communication

            14
          • 2.2.6. Error-free Packet Transmission Using ARQ

            14
• 2.3. Modes of Operation

  15
  • 2.3.1. Control and Data Modes

    15
    • 2.3.2. Sleep Mode

      15
      • 2.3.3. Low Power Mode and Duty Cycling

        16
        • 2.3.4. RF Flow Control Mode

          16
        • 3. PROTOCOL MODES

          17
          • 3.1.1. Data Packet

            19
          • 3.1.3. Connect Packet

            20
          • 3.1.4. Disconnect Packet (base only, receive only)

            20
        • 4. MODEM INTERFACE

          21
• 4.1. Interfacing to 5-Volt Systems

  22
• Evaluation Unit and OEM Module Differences

  22
• 4.3 Three Wire Operation

  22
• 4.4 Power-On Reset Requirements

  23
  • 5. MODEM COMMANDS

    24
• 5.1. Serial Commands

  24
  • Set Data Rate Divisor

    24
    • Set Protocol Mode

      25
• 5.2. Network Commands

  26
  • Set Transceiver Mode

    26
  • Set Default Handle

    26
  • Enable Global Network Mode

    27
  • For networks with multiple base stations, remotes are ordina

    27
  • Set Lockout Key

    27
  • Set Hopping Pattern

    27
  • Set Transmit Power

    27
    • Set Point-to-Point Direct Mode

      27
• 5.3. Protocol Commands

  28
  • This sets the minimum threshold number of bytes required to

    29
    • Set Maximum Number of Remotes (base only)

      29
      • Set Packet Attempts Limit

        29
        • Set ARQ Mode

          30
• 5.4. Status Commands

  31
• 5.5. Memory Commands

  32
  • Display Modified Parameters

    32
• 5.6. Modem Command Summary

  33
  • 6. WIT910 DEVELOPER’S KIT

    34
• 6.1. WinCOM

  35
  • 6.1.1 WinCOM Tools

    37
• 6.2. Demonstration Procedure

  39
• 6.3. Troubleshooting

  40
  • 7. APPENDICES

    42
• 7.1. Technical Specifications

  42
  • Ordering Information

    42
    • 7.1.2. Power Specifications

      42
      • 7.1.3. RF Specifications

        42
        • 7.1.4. Mechanical Specifications

          42
• 7.2. Serial Connector Pinouts

  43
• 7.3. Approved Antennas

  43
• 7.4. Technical Support

  44
• 7.6.1 Mechanical Drawing – WIT910

  46
• 7.7 Warranty

  47