RFM DNT2400 Series Integration Manual

2.4 ghz spread spectrum wireless transceivers
Table of Contents

Advertisement

Quick Links

DNT2400 Series
2.4 GHz Spread Spectrum
Wireless Transceivers
Integration Guide
www.RFM.com
Technical support +1.678.684.2000
Page 1 of 82
©2009 by RF Monolithics, Inc.
E-mail:
tech_sup@rfm.com
DNT2400 - 08/18/09

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the DNT2400 Series and is the answer not in the manual?

Questions and answers

Summary of Contents for RFM DNT2400 Series

  • Page 1 DNT2400 Series 2.4 GHz Spread Spectrum Wireless Transceivers Integration Guide www.RFM.com Technical support +1.678.684.2000 Page 1 of 82 ©2009 by RF Monolithics, Inc. E-mail: tech_sup@rfm.com DNT2400 - 08/18/09...
  • Page 2 (e.i.r.p.) is not more than that permitted for successful communication. See Section 3.10 of this manual for regulatory notices and labeling requirements. Changes or modifica- tions to a DNT2400 not expressly approved by RFM may void the user’s authority to operate the module. www.RFM.com Technical support +1.678.684.2000 Page 2 of 82 ©2009 by RF Monolithics, Inc.
  • Page 3: Table Of Contents

    Message Format Details......................32 4.1.3 /CFG Select Pin .......................... 33 4.1.4 Flow Control ..........................33 4.1.5 Protocol Mode Data Message Example ..................34 www.RFM.com Technical support +1.678.684.2000 Page 3 of 82 ©2009 by RF Monolithics, Inc. E-mail: tech_sup@rfm.com DNT2400 - 08/18/09...
  • Page 4 Appendices ............................76 Ordering Information........................76 Technical Support .......................... 76 DNT2400 Mechanical Specifications ..................... 77 DNT2400 Development Board Schematic..................80 Warranty............................82 www.RFM.com Technical support +1.678.684.2000 Page 4 of 82 ©2009 by RF Monolithics, Inc. E-mail: tech_sup@rfm.com DNT2400 - 08/18/09...
  • Page 5: Introduction

    1.0 Introduction The DNT2400 series transceivers provide highly reliable wireless connectivity for point-to-point, point-to- multipoint and peer-to-peer applications. Frequency hopping spread spectrum (FHSS) technology en- sures maximum resistance to multipath fading and robustness in the presence of interfering signals, while operation in the 2.4 GHz ISM band allows license-free use world wide.
  • Page 6: Frequency Hopping Versus Direct Sequence

    Forms of spread spectrum - direct sequence and frequency hopping Figure 1.1.2 www.RFM.com Technical support +1.678.684.2000 Page 6 of 82 ©2009 by RF Monolithics, Inc.
  • Page 7: Dnt2400 Radio Operation

    “leased” and must be “renewed” once every 250 hops. Any transmission from a remote running on a leased registration renews the lease with the base. If a remote does not transmit within 250 hops, the www.RFM.com Technical support +1.678.684.2000 Page 7 of 82 ©2009 by RF Monolithics, Inc.
  • Page 8: Authentication

    Mode 3 is typically used in conjunction with Mode 0 during a commis- sioning process. AuthMode is set to 0, remotes are turned on and allowed to register with the base, and AuthMode is then switched to 3 to lock the network membership. www.RFM.com Technical support +1.678.684.2000 Page 8 of 82 ©2009 by RF Monolithics, Inc.
  • Page 9: Transparent And Protocol Serial Port Modes

    2.5 RF Transmission Error Control The DNT2400 supports two error control modes: automatic transmission repeats (ARQ), and redundant transmissions for broadcast packets. In both modes, the radio will detect and discard any duplicates of www.RFM.com Technical support +1.678.684.2000 Page 9 of 82 ©2009 by RF Monolithics, Inc.
  • Page 10: Transmitter Power Management

    If no acknowledgment is received, the base will retransmit the same data on the next hop. Note that acknowledgements from remotes are suppressed on broadcast packets from the base. www.RFM.com Technical support +1.678.684.2000 Page 10 of 82 ©2009 by RF Monolithics, Inc.
  • Page 11: Point-To-Multipoint Network Operation

    From an application’s perspective, the radios are communicating in full duplex since the base can receive data from a remote before it completes the transmission of a message to the remote and vice- versa. www.RFM.com Technical support +1.678.684.2000 Page 11 of 82 ©2009 by RF Monolithics, Inc.
  • Page 12: Channel Access

    Polling (mode 0) is a special case of CSMA mode 1. The user can set the BaseSlotSize and CSMA_ RemtSlotSize parameters when using this mode. Since only one remote will attempt to transmit at a time, www.RFM.com Technical support +1.678.684.2000 Page 12 of 82 ©2009 by RF Monolithics, Inc.
  • Page 13: Csma Mode

    MAC addresses and periodically sending a GetRemoteRegister command to each remote in the table. Failure to answer a GetRemoteRegister command indicates the remote is no longer active in the network. www.RFM.com Technical support +1.678.684.2000 Page 13 of 82 ©2009 by RF Monolithics, Inc.
  • Page 14: Tdma Modes

    So latency and throughput trade off against one another. The www.RFM.com Technical support +1.678.684.2000 Page 14 of 82 ©2009 by RF Monolithics, Inc.
  • Page 15: Tdma Throughput

    BaseSlotSize. Note that the base radio always reserves BaseSlotSize amount of time in each hop whether or not the base has user data to send. To help select appropriate parameter values, RFM provides the DNT Throughput Calculator utility pro- gram (DNTCalc.exe). This program is on the development kit CD. Enabling encryption (security) adds additional bytes to the data to be sent but the Calculator has a mode to take this into account.
  • Page 16: Csma Throughput

    This can occur when the remote checks the channel multiple times during the transmitting remote’s transmission causing the back-off time to be increased. www.RFM.com Technical support +1.678.684.2000 Page 16 of 82 ©2009 by RF Monolithics, Inc.
  • Page 17: Latency

    4. When operating in polling mode 0, the CSMA_RemtSlotSize and HopDuration parameters are usually set to accommodate the number of data bytes in a maximum size transmission. This con- figuration provides low latency for polled messages. www.RFM.com Technical support +1.678.684.2000 Page 17 of 82 ©2009 by RF Monolithics, Inc.
  • Page 18 Calculator to determine the minimum valid HopDuration time. Note that when there are fewer remotes on the network than the maximum specified, the remotes will automatically be configured with a bigger RemoteSlotSize parameter. www.RFM.com Technical support +1.678.684.2000 Page 18 of 82 ©2009 by RF Monolithics, Inc.
  • Page 19: Serial Port Operation

    FHSS. Radios transmissions are half duplex, and there are overheads related to hopping frequencies, assembling packets from the serial port data stream, transmitting them, sending ACK’s to confirm error-free reception, and occasional transmission retries when errors occur. www.RFM.com Technical support +1.678.684.2000 Page 19 of 82 ©2009 by RF Monolithics, Inc.
  • Page 20: Sleep Modes

    In addition to the sleep mode controlled by Pin 11, in CSMA mode the DNT2400 remotes support an additional sleep mode to support battery-powered applications. When this mode is enabled, the DNT2400 www.RFM.com Technical support +1.678.684.2000 Page 20 of 82 ©2009 by RF Monolithics, Inc.
  • Page 21 • So long as a GPIO for which I/O reporting is enabled for a level trigger remains in its triggered state, the remote will remain awake. www.RFM.com Technical support +1.678.684.2000 Page 21 of 82 ©2009 by RF Monolithics, Inc.
  • Page 22: Encryption

    This prevents the situation where one base is transmitting while another nearby base is trying to hear a distant remote. Even though the base radios may be on different www.RFM.com Technical support +1.678.684.2000 Page 22 of 82 ©2009 by RF Monolithics, Inc.
  • Page 23 N is the number of frequencies in the subband being used. For example, if the frequency subband contains 15 frequencies, a repeating cycle containing 1 wide pulse followed by 14 nar- row pulses should be used. www.RFM.com Technical support +1.678.684.2000 Page 23 of 82 ©2009 by RF Monolithics, Inc.
  • Page 24: Dnt2400 Hardware

    The radio is available in two mounting configurations. The DNT2400C is designed for solder reflow mounting, and the DNT2400P is designed for plug-in con- nector mounting. www.RFM.com Technical support +1.678.684.2000 Page 24 of 82 ©2009 by RF Monolithics, Inc.
  • Page 25: Specifications

    Remote, 115.2 kb/s Continuous Data Stream Sleep Current µA Operating Temperature Range Operating Relative Humidity Range (non condensing) 1. Maximum sleep current occurs at +85 Table 3.1.1 www.RFM.com Technical support +1.678.684.2000 Page 25 of 82 ©2009 by RF Monolithics, Inc. E-mail: tech_sup@rfm.com DNT2400 - 08/18/09...
  • Page 26: Module Interface

    Default functionality is data carrier detect output, which provides a logic low on a remote when the /DCD module is locked to FHSS hopping pattern and logic low on a base when at least one remote is connected to it. www.RFM.com Technical support +1.678.684.2000 Page 26 of 82 ©2009 by RF Monolithics, Inc.
  • Page 27: Dnt2400C Rfio Stripline

    The DNT2400C has a U.FL coaxial connector mounted near pad 42 for antenna connection (see Antenna Connector discussion below). It is also possible to connect an antenna using a stripline from pad 42. It is www.RFM.com Technical support +1.678.684.2000 Page 27 of 82 ©2009 by RF Monolithics, Inc.
  • Page 28: Dnt2400 Antenna Connector

    I/O lines. This is especially important in outdoor instal- lations, and/or where connections are made to sensors with long leads. Inadequate transient protection can result in damage and/or create a fire and safety hazard. www.RFM.com Technical support +1.678.684.2000 Page 28 of 82 ©2009 by RF Monolithics, Inc.
  • Page 29: Interfacing To 5 V Logic Systems

    ”Contains FCC ID: HSW-DNT2400.” WARNING: This device operates under Part 15 of the FCC rules. Any modification to this device, not expressly authorized by RFM, Inc., may void the user’s authority to operate this device. www.RFM.com Technical support +1.678.684.2000 Page 29 of 82 ©2009 by RF Monolithics, Inc.
  • Page 30 Le present appareil numerique n’emet pas de bruits radioelectriques depassant les limites applicables aux appareils numeriques de Classe B prescrites dans le reglement sur le brouillage radioelectrique edicte par Industrie Canada. www.RFM.com Technical support +1.678.684.2000 Page 30 of 82 ©2009 by RF Monolithics, Inc.
  • Page 31: Protocol Messages

    RxEvent and Announce packets are indicated by 0x20 in the high nibble of the type byte. If multiple arguments are to be provided, they are to be concatenated in the order shown. Little-Endian byte format www.RFM.com Technical support +1.678.684.2000 Page 31 of 82 ©2009 by RF Monolithics, Inc.
  • Page 32: Message Format Details

    TxStatus = Result of last TxData operation (1 byte) 0 = Acknowledgement received 1 = No acknowledgement received 2 = Not linked (remote) 3 = No ACK due to recipient holding for flow control www.RFM.com Technical support +1.678.684.2000 Page 32 of 82 ©2009 by RF Monolithics, Inc. E-mail: tech_sup@rfm.com...
  • Page 33: Cfg Select Pin

    4.1.4 Flow Control There are two flow control signals between the radio and the host, /HOST_RTS and /HOST_CTS. See Section 2.11 for flow control details. www.RFM.com Technical support +1.678.684.2000 Page 33 of 82 ©2009 by RF Monolithics, Inc.
  • Page 34: Protocol Mode Data Message Example

    0 = 0 V, 1 = 3.3 V, 2 = toggle Reserved UserTag “DNT2400" RegDenialDelay 10 s RmtTransDestAddr 0x000000 (Base) Note: These settings are individual to each module. www.RFM.com Technical support +1.678.684.2000 Page 34 of 82 ©2009 by RF Monolithics, Inc. E-mail: tech_sup@rfm.com DNT2400 - 08/18/09...
  • Page 35 I/O report. This allows the application as much time as needs for any initial configuration after which it can cause the remote to re-enter sleep by setting this to the operating value. www.RFM.com Technical support +1.678.684.2000 Page 35 of 82 ©2009 by RF Monolithics, Inc.
  • Page 36: Bank 1 - System Settings

    8 attempts MaxSlots 0..15 16 slots CSMA_Predelaty 0..255 0x03 CSMA_Backoff 0..255 0x0A MaxPropDelay 0..255 0x45 (20 mi, 32.18 km) LinkDropThreshold 0..255 0x0C www.RFM.com Technical support +1.678.684.2000 Page 36 of 82 ©2009 by RF Monolithics, Inc. E-mail: tech_sup@rfm.com DNT2400 - 08/18/09...
  • Page 37 0 If set to 1, ARQ mode is enabled for Protocol mode; the base will send broadcast packets ARQ_AttemptLimit times instead of once. If set to 0, broadcast packets are sent once www.RFM.com Technical support +1.678.684.2000 Page 37 of 82 ©2009 by RF Monolithics, Inc.
  • Page 38 The current range information is available in the CurrPropDelay parameter. LinkDropThreshold - this is the number of consecutive beacons missed by a remote that causes the remote to restart a link acquisition search. Please contact RFM technical support before making changes to the parameter.
  • Page 39: Bank 2 - Status Registers

    CurrFreqBand - this returns the frequency band of the network that the radio is currently assigned to or connected to. A value of 0xFF means the radio is scanning for a network but has not yet joined one. www.RFM.com Technical support +1.678.684.2000 Page 39 of 82 ©2009 by RF Monolithics, Inc.
  • Page 40 FirmwareBuildDate - date of firmware build in MM/DD/YY format. FirmwareBuildTime - time of firmware build in HH:MM:SS format. ModelNumber - DNT model number parameter, 0x01 = DNT900, 0x02 = DNT2400. www.RFM.com Technical support +1.678.684.2000 Page 40 of 82 ©2009 by RF Monolithics, Inc.
  • Page 41: Bank 3 - Serial

    SLEEP/DTR enable. 1 = Radio will respond to changes on the SLEEP Pin (default) 0 = Radio ignores the SLEEP Pin and is always in the awake state. www.RFM.com Technical support +1.678.684.2000 Page 41 of 82 ©2009 by RF Monolithics, Inc.
  • Page 42: Bank 4 - Host Protocol Settings

    TransPtToPtMode- controls the behavior for addressing packets in transparent mode. When this setting is zero (default), in transparent mode the base will direct packets to the broadcast address. This is useful for www.RFM.com Technical support +1.678.684.2000 Page 42 of 82 ©2009 by RF Monolithics, Inc.
  • Page 43: Bank 5 - I/O Peripheral Registers

    0 = off; 1 = use sleep I/O states GPIO_SleepDir 0 (all inputs) GPIO_SleepState 0 (all zeros) PWM0_Init 0x0000 PWM1_Init 0x0000 ADC_SampleIntvl 0x0001 (10 ms) ADC0 ThresholdLo 0x0000 ADC0_ThresholdHi 0x03FF www.RFM.com Technical support +1.678.684.2000 Page 43 of 82 ©2009 by RF Monolithics, Inc. E-mail: tech_sup@rfm.com DNT2400 - 08/18/09...
  • Page 44 6 high, but sleep current will be increased. PWM0_Init - this parameter sets the initial value for PWM0 at startup. PWM1_Init - this parameter sets the initial value for PWM1 at startup. www.RFM.com Technical support +1.678.684.2000 Page 44 of 82 ©2009 by RF Monolithics, Inc.
  • Page 45: Bank 7 - Authentication List

    ApprovedAdd0..15 - the three-byte parameters in Bank 7 are the MAC addresses of the remotes author- ized to join the network. The addresses are entered in little-endian format such that a radio with MAC address 012345 would be entered 0x452301. www.RFM.com Technical support +1.678.684.2000 Page 45 of 82 ©2009 by RF Monolithics, Inc.
  • Page 46: Bank Ff - Special Functions

    SetRegister command: 0xFB 0x05 0x04 0xFF 0xFF 0x01 0x01 The base will write the current parameter values to EEPROM and return a SetRegisterReply message: 0xFB 0x01 0x14 www.RFM.com Technical support +1.678.684.2000 Page 46 of 82 ©2009 by RF Monolithics, Inc. E-mail: tech_sup@rfm.com...
  • Page 47: Protocol Mode Sensor Message Example

    14 bytes in Bank 5, including the state of GPIO0 through GPIO5, the input voltages measured by ADC0 through ADC2, and the state of the event flags. Note the ADC readings and the event flags are presented in Little-Endian order. www.RFM.com Technical support +1.678.684.2000 Page 47 of 82 ©2009 by RF Monolithics, Inc.
  • Page 48: Dnt2400Dk Developer's Kit

    1 mW, the DNT2400 nodes must be separated by a minimum of 6 feet for 10 mW or 25 feet at 63 mW in order to reliably link. www.RFM.com Technical support +1.678.684.2000 Page 48 of 82 ©2009 by RF Monolithics, Inc.
  • Page 49: Developer's Kit Default Operating Configuration

    Figure 5.5.2. Also check the radio’s alignment in the socket on the interface board. No pins should be hanging out over the ends of the connector. Next, install the dipole antennas. Figure 5.5.1 Figure 5.5.2 www.RFM.com Technical support +1.678.684.2000 Page 49 of 82 ©2009 by RF Monolithics, Inc.
  • Page 50 As shown in Figure 5.5.3, there is a jumper on pins J14. This jumper can be removed and a current meter connected across J14 to measure just the DNT2400’s current consumption during operation. Figure 5.5.3 www.RFM.com Technical support +1.678.684.2000 Page 50 of 82 ©2009 by RF Monolithics, Inc.
  • Page 51: Dnt2400 Demo Utility Program

    I/O). Two serial/USB ports are required for bidirectional serial communications. Section 5.6.1 below covers using the DNT Demo utility for initial kit operation and familiarization. Section 5.6.2 covers serial message communication and radio configuration. www.RFM.com Technical support +1.678.684.2000 Page 51 of 82 ©2009 by RF Monolithics, Inc.
  • Page 52: Initial Kit Operation

    PC and run. Start the DNT Demo on the PC. The start-up window is shown in Figure 5.6.1.1. Figure 5.6.1.1 www.RFM.com Technical support +1.678.684.2000 Page 52 of 82 ©2009 by RF Monolithics, Inc.
  • Page 53 Base. Click on the drop-down box at the top of the Radio 1 column and select the MAC Address for the Remote. Next press the Start button using the default 1 second Refresh Delay. Figure 5.6.1.3 www.RFM.com Technical support +1.678.684.2000 Page 53 of 82 ©2009 by RF Monolithics, Inc.
  • Page 54 Pins 2 and 3 of the DB9 serial connector can cause erratic behavior due to noise coupling from the serial TX and RX lines into the weakly pulled up flow control lines on the board. Figure 5.6.1.5 www.RFM.com Technical support +1.678.684.2000 Page 54 of 82 ©2009 by RF Monolithics, Inc.
  • Page 55: Serial Communication And Radio Configuration

    SleepState is set to 0xC0. See Section 4.2.7 for additional information on the GPIO_SleepState parameter. If any difficulty is encountered in setting up the DNT2400DK development kit, contact RFM’s module technical support group. The phone number is +1.678.684.2000. Phone support is available from 8:30 AM to 5:30 PM US Eastern Time Zone, Monday through Friday.
  • Page 56 Figure 5.6.2.3 shows the System tab contents, corresponding to Bank 1. The current values of each parameter are displayed and can be updated by selecting from the drop-down menus or entering data www.RFM.com Technical support +1.678.684.2000 Page 56 of 82 ©2009 by RF Monolithics, Inc.
  • Page 57 Figure 5.6.2.4 shows the Status tab contents, corresponding to Bank 2. Note the Status tab contains read-only parameters. Figure 5.6.2.5 Figure 5.6.2.5 shows the Serial tab contents corresponding to Bank 3. The values shown are the defaults for serial port operation. www.RFM.com Technical support +1.678.684.2000 Page 57 of 82 ©2009 by RF Monolithics, Inc. E-mail: tech_sup@rfm.com...
  • Page 58 5 are logic low, GPIO port 0 is logic high. The 10-bit ADC input readings and PWM output settings are given in Big-Endian byte order. Event flags are presented on the right side of the window. www.RFM.com Technical support +1.678.684.2000 Page 58 of 82 ©2009 by RF Monolithics, Inc.
  • Page 59 The ADC sampling interval, high and low thresholds for event reporting and event reporting triggers on each ADC channel can be set, along with the start-up output values for each PWM (DAC) channel. www.RFM.com Technical support +1.678.684.2000 Page 59 of 82 ©2009 by RF Monolithics, Inc.
  • Page 60 Figure 5.6.2.10 Figure 5.6.2.10 shows the Auth List tab, where the MAC addresses of the remotes authorized to join the network in AuthMode 1 are input into Bank 7. www.RFM.com Technical support +1.678.684.2000 Page 60 of 82 ©2009 by RF Monolithics, Inc.
  • Page 61: Dnt2400 Wizard Utility Program

    Control of the log file is under the View menu. Logging is enabled by default. The log file created is logfile.dat, and is in ASCII text format. An example log is shown at the end of this section. www.RFM.com Technical support +1.678.684.2000 Page 61 of 82 ©2009 by RF Monolithics, Inc.
  • Page 62 At this point the Wizard will collect data from the Base, filling in data under Current Settings as shown in Figure 5.7.3. The Status Window should also show that the Remote has joined the Base. Figure 5.7.3 www.RFM.com Technical support +1.678.684.2000 Page 62 of 82 ©2009 by RF Monolithics, Inc.
  • Page 63 Figure 5.7.4 Received messages are displayed in the Receive Data tab, along with the MAC address of the sender and the RSSI (signal strength) of the received message in dBm. See Figure 5.7.4. www.RFM.com Technical support +1.678.684.2000 Page 63 of 82 ©2009 by RF Monolithics, Inc.
  • Page 64 (was Transmit button) is clicked. The status of each transmission is shown below TX Data Reply. Figure 5.7.5 shows that the transmitted message was ACKed, with the received signal strength of the ACK -66 dBm. www.RFM.com Technical support +1.678.684.2000 Page 64 of 82 ©2009 by RF Monolithics, Inc.
  • Page 65 As shown in Figure 5.7.6, the Wincom tab provides the basic functionality of a serial terminal program. Messages typed in are sent, and messages received are appended to the bottom of the on-screen text. www.RFM.com Technical support +1.678.684.2000 Page 65 of 82 ©2009 by RF Monolithics, Inc.
  • Page 66 Bank 7. Figure 5.7.7 The Configuration window in the DNTWizard is identical the Configuration window in the DNT Demo. See Figures 5.6.2.2 through 5.6.2.10 for Configuration window details. www.RFM.com Technical support +1.678.684.2000 Page 66 of 82 ©2009 by RF Monolithics, Inc.
  • Page 67 On the left, the Packet Type drop-down box provides a selection of all packet types used in the DNT2400 protocol. On the right, the reply packet types are presented. Figure 5.7.9 Figure 5.7.10 www.RFM.com Technical support +1.678.684.2000 Page 67 of 82 ©2009 by RF Monolithics, Inc.
  • Page 68 (Exit Protocol Mode) Recv Data : FB 01 11 (Exit Protocol Mode Reply) The log file is especially useful in confirming the format of specific protocol commands and replies. www.RFM.com Technical support +1.678.684.2000 Page 68 of 82 ©2009 by RF Monolithics, Inc.
  • Page 69: Dnt2400 Interface Board Features

    LED D2 illuminates when the PC sends data through the serial port to be transmitted. Jumper pin set J14 is provided to allow measurement of the DNT2400P current. For normal operation J14 has a shorting plug installed. www.RFM.com Technical support +1.678.684.2000 Page 69 of 82 ©2009 by RF Monolithics, Inc.
  • Page 70 YMODEM. Pin strip J7 provides access to various DNT2400 pins as shown on the silkscreen. Pressing switch SW2 will reset the DNT2400P. www.RFM.com Technical support +1.678.684.2000 Page 70 of 82 ©2009 by RF Monolithics, Inc.
  • Page 71 The DNT2400P interface board includes a 5 V regulator to regulate the input from the 9 V wall-plug power supply. Note: do not attempt to use the 9 V wall-plug power supply to power the DNT2400P directly. The maximum allowed voltage input to the DNT2400P is 5.5 V. www.RFM.com Technical support +1.678.684.2000 Page 71 of 82 ©2009 by RF Monolithics, Inc.
  • Page 72: Demonstration Procedure

    8. The Demo will display updated data on the Remote in the Radio 1 column, including bar graphs of RSSI signal strength in dBm and percent packet success rate. Adjusting the large pot on the Remote can be observed on the Potentiometer (ADC1) row. www.RFM.com Technical support +1.678.684.2000 Page 72 of 82 ©2009 by RF Monolithics, Inc.
  • Page 73: Troubleshooting

    ‘4’ (0x34) - RegRx activity only ‘5’ (0x35) - DataTx and RegRx activity ‘6’ (0x36) - AckRx and RegRx activity ‘7’ (0x37) - DataTx, AckRx and RegRx activity www.RFM.com Technical support +1.678.684.2000 Page 73 of 82 ©2009 by RF Monolithics, Inc.
  • Page 74 - RegTx, registration or renewal request or reply transmitted b2 - RegRx, registration or renewal request or reply received b1 - AckRx, ACK received b0 - DataTx, data packet transmitted www.RFM.com Technical support +1.678.684.2000 Page 74 of 82 ©2009 by RF Monolithics, Inc.
  • Page 75 Byte 5, 0x01, provides the serial port status - /HOST_CTS is high Byte 6, 0x01, provides the communication status - DataTx active only. Note that this byte provides addi- tional status bytes compared to byte index 1. www.RFM.com Technical support +1.678.684.2000 Page 75 of 82 ©2009 by RF Monolithics, Inc.
  • Page 76: Appendices

    8.1 Ordering Information DNT2400C: transceiver module for solder-pad mounting DNT2400P: transceiver module for pin-socket mounting 8.2 Technical Support For DNT2400 technical support call RFM at (678) 684-2000 between the hours of 8:30 AM and 5:30 PM Eastern Time. www.RFM.com Technical support +1.678.684.2000 Page 76 of 82 ©2009 by RF Monolithics, Inc.
  • Page 77: Dnt2400 Mechanical Specifications

    0 . 5 9 5 0 . 1 8 0 D i m e n s i o n s i n i n c h e s Figure 8.3.1 www.RFM.com Technical support +1.678.684.2000 Page 77 of 82 ©2009 by RF Monolithics, Inc.
  • Page 78 0 . 2 8 5 0 . 3 3 3 D i m e n s i o n s i n i n c h e s Figure 8.3.2 www.RFM.com Technical support +1.678.684.2000 Page 78 of 82 ©2009 by RF Monolithics, Inc.
  • Page 79 C o n n e c t o r s a r e F C I E l e c t r o n i c s 7 5 9 1 5 - 4 2 0 L F o r e q u i v a l e n t D i m e n s i o n s i n i n c h e s a n d ( m m ) Figure 8.3.3 www.RFM.com Technical support +1.678.684.2000 Page 79 of 82 ©2009 by RF Monolithics, Inc.
  • Page 80: Dnt2400 Development Board Schematic

    8.4 DNT2400 Development Board Schematic www.RFM.com Technical support +1.678.684.2000 Page 80 of 82 ©2009 by RF Monolithics, Inc. E-mail: tech_sup@rfm.com DNT2400 Integration Guide - 08/18/09...
  • Page 81 Technical support +1.678.684.2000 Page 81 of 82 ©2009 by RF Monolithics, Inc. E-mail: tech_sup@rfm.com DNT2400 Integration Guide - 08/18/09...
  • Page 82: Warranty

    SALE OR SUPPLYING OF THE GOODS. THE FOREGOING WARRANTY EXTENDS TO BUYER ONLY AND SHALL NOT BE APPLICABLE TO ANY OTHER PERSON OR ENTITY INCLUDING, WITHOUT LIMITATION, CUSTOMERS OF BUYERS. Part # M-2400-3002, Rev A www.RFM.com Technical support +1.678.684.2000 Page 82 of 82 ©2009 by RF Monolithics, Inc.

Table of Contents