Ritron DTX-160-0BN6I-NXDN User Manual

Programmable fm transceiver module

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RITRON, INC.
11-2022
RITRON MODEL: DTX-160-0BN6I-NXDN
PROGRAMMABLE
FM TRANSCEIVER MODULE
USER MANUAL

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Summary of Contents for Ritron DTX-160-0BN6I-NXDN

  • Page 1 RITRON, INC. 11-2022 RITRON MODEL: DTX-160-0BN6I-NXDN PROGRAMMABLE FM TRANSCEIVER MODULE USER MANUAL...
  • Page 2: Table Of Contents

    TABLE OF CONTENTS DTX MODULES INTRODUCTION GENERAL MODEL IDENTIFICATION FCC/IC REGULATIONS SPECIFICATIONS GENERAL TRANSMITTER RECEIVER DTX INPUT/OUTPUT CONNECTOR ACCESSORIES OPERATION CHANNEL SELECTION POWER SUPPLY VOLTAGE CURRENT DRAIN vs SUPPLY VOLTAGE DUTY CYCLE/KEY-DOWN LIMITATIONS OPERATING MODES PROGRAMMING PC PROGRAMMING KIT LOADING THE PROGRAMMING SOFTWARE COMPUTER SOFTWARE COPYRIGHTS USING THE PROGRAMMING SOFTWARE PROGRAMMER MENUS...
  • Page 3: Introduction

    INTRODUCTION GENERAL The RITRON DTX Plus modules are programmable 2-way radios, which operate either in the VHF or UHF professional FM communications bands as well as a number of other bands in the 220 MHz and 350 MHz region. Each of 8 channels can be programmed to contain a unique set of operating frequencies.
  • Page 4: Fcc/Ic Regulations

    F designates the regulator option I=Internal regulator (10-16 VDC operation with regulated RF power amplifier) D=No regulator (7.5 VDC operation) L=RF PA is unregulated, but the remainder of the modem is regulated (10-watt versions) Example: A DTX-160-OBN6I would be a VHF module for operation between 136 and 174 MHz with a BNC RF connector, narrow (12.5 kHz channel spacing) IF bandwidth, 6 watts maximum output power, and an internal regulator to allow operation from 10 to 15 volts.
  • Page 5 This 2-way radio uses electromagnetic energy in the radio frequency (RF) spectrum to provide communications between two or more users over a distance. It uses radio frequency (RF) energy or radio waves to send and receive calls. RF energy is one form of electromagnetic energy. Other forms include, but are not limited to, electric power, sunlight and x-rays.
  • Page 6 Ritron accessories supplied or designated for this product. Use of other accessories may not ensure compliance with the FCC’s RF exposure guidelines, and may violate FCC regulations. • For a list of Ritron approved accessories see this user manual, or visit the following website which lists approved accessories: www.ritron,com...
  • Page 7 INFORMATIONS DE SENSIBILISATION ET DE CONTRÔLE À L'EXPOSITION AUX ÉNERGIES RF, ET INSTRUCTIONS OPÉRATIONNELLES POUR LES EXIGENCES D'UTILISATION PROFESSIONNELLE DE LA FCC: AVANT D'UTILISER CETTE RADIO À 2 VOIES, LISEZ CES INFORMATIONS IMPORTANTES SUR LA SENSIBILISATION ET LE CONTRÔLE À L'ÉNERGIE RF ET LES INSTRUCTIONS OPÉRATIONNELLES POUR VOUS ASSURER LA CONFORMITÉ...
  • Page 8 Tableau 1. Puissance nominale et distance latérale recommandée pour l'antenne quart d'onde, gain unitaire, plan de masse: Puissance nominale de latérale minimale recommandée DTX-160-0BN6I-NXDN Distance radio bidirectionnelle de l'antenne émettrice 6 watts 8 pouces (22 cm)
  • Page 9 RF de la FCC et peut enfreindre les réglementations FCC. • Pour une liste des accessoires approuvés par Ritron, consultez ce manuel de l'utilisateur ou visitez le site Web suivant qui répertorie les accessoires approuvés: www.ritron, com...
  • Page 10: Specifications

    SPECIFICATIONS GENERAL DTX-160-0BN6I-NXDN FCC ID: AIERIT53-16006 IC ID: 1084A-RIT5316006 FCC Rule Parts Industry Canada Rule Parts RSS-119 Frequency Range 136-174 MHz Number of Channels Transmit/Receive Spacing Up to the span of the sub-band Mode of Operation Simplex or Half Duplex...
  • Page 11: Transmitter

    TRANSMITTER Operating Bandwidth 136 -174 MHz RF Output Power(internally adjustable) 6 watt version 1 to 6 watts (2.5 watts min. recommended) Duty Cycle 5 to 100 % depending upon voltage and power level (see chart elsewhere in manual) RF Load Impedance 50 ohms Modulation Distortion (per TIA/EIA 603) 5 % max.
  • Page 12: Receiver

    RECEIVER Operating Bandwidth 136-174 MHz Sensitivity (12 dB SINAD @ 1 kHz w de-emphasis) 0.25 uV (-119.0 dBm) RF Input Impedance 50 ohms nominal Adjacent Channel Selectivity +/- 12.5 kHz w/ narrow IF 60 dB min. Spurious and Image Rejection IF/2 60 dB min.
  • Page 13: Dtx Input/Output Connector

    DTX INPUT/OUTPUT CONNECTORS DB-15 Connector Pinout Pin Number Name Description Comments Channel Select Low Bit Channel Select Mid Bit Channel Select High Bit MIC IN External Audio Input Wideband Input for Voice Audio. Signals at this input are pre- emphasized, limited, and filtered. High/Low Power, 2-Channel RNet Mode RAW SUPPLY Supply Voltage Input +10 to +16VDC Input.
  • Page 14 1000 ohms unless the resultant voltage drop is accounted for. PGN IN/OUT - Connect via RITRON DTXP-PCPK PC Programming Kit to computer for programming the unit. CTS-Clear-To-Send output from the unit which indicates that the unit is transmitting a carrier at the correct frequency and power level and is ready to accept an input signal to be transmitted.
  • Page 15: Accessories

    PTT/RTS- Push to Talk/Request to Send. This input commands the unit to transmit. Input levels are TTL/CMOS; polarity may be programmed. Internal 10 k pull-up to +3.3 volts. GND-System ground. All signals and voltages are referenced to this input. The negative side of the power supply should connect here.
  • Page 16: Operation

    Do NOT apply voltages outside the range of 0 to +3.3 volts to these pins. Note: When the Ritron programming cable is connected, these pins are not connected and thus, assume a logic high state. Therefore, the radio will be on channel 8 when the Ritron programming cable is connected.
  • Page 17: Duty Cycle/Key-Down Limitations

    Also, a fan option is available from Ritron which can significantly increase the duty cycle, up to 100% at room temperature in some cases. Contact Ritron for additional information on these options and special instructions on attaching heat sinks without compromising the mechanical integrity of the RF PA module.
  • Page 18: Operating Modes

    AC coupled, but can be modified for DC coupling. This requires replacing a coupling capacitor with a zero-ohm resistor. Contact Ritron for details on this modification. The AUDIO OUT is always de-emphasized, but its gain can be programmed. This output can drive 8-ohm speaker- type loads.
  • Page 19: Programming

    The end user/system integrator would then bear the responsibility of obtaining certification or operating in a frequency band where certification is not required. Contact RITRON for details. Note: Most modems will connect directly to the DTX without requiring any special modifications or programming.
  • Page 20: Loading The Programming Software

    RITRON, Inc. except for the non-exclusive, royalty fee license to use that arises in the sale of a product, or as addressed in a written agreement between RITRON, Inc. and the purchaser of RITRON, Inc. products.
  • Page 21 Update Radio-This button is used to update the radio with all of the changes that have been made via the programmer. Although the radio accepts changes as they are made via the programmer, the changes are volatile i.e. they are lost when the radio is powered off. Clicking on this button makes the changes non-volatile so that they are saved and stored permanently unless changed via the programmer.
  • Page 22 Red LED- Sets the operation of the red LED on the front of the radio. The choices are: Off-The red LED is never on. RX-The red LED is on whenever the radio is actually transmitting. This is the factory default setting. NXDN 6.5.3 The NXDN page programs the settings for NXDN operation for each individual channel.
  • Page 23 CD Output Logic Level- Allows the setting of the polarity of the CD (Carrier Detect) output. Active high means that the true state is a logic high while active low means that the true state is logic low. Normal setting is active high. The factory default is active high. Squelch Enable- Allows receive audio paths to be muted when the carrier detect output is false.
  • Page 24 SUMMARY 6.5.6 The summary page summarizes the information about the radio. Model- Ritron Model Number of the radio. Firmware Version- Firmware loaded into the radio. Manufacture Date(Wk/Yr)- Date at which the radio completed te QC Test process, Customer ID- User Programmed ID, up to 35 characters.
  • Page 25: Maintenance

    The parts within the shield are low failure items; repair or replacement should not be required unless the RF board is mishandled. If failure of a part within the shield is deemed to have occurred, the RF board should be returned to RITRON for service or replacement.
  • Page 26: Hardware Options

    The AUX OUT output is normally AC coupled through C399. If DC coupling is desired, an 0805 size SMD zero ohm jumper resistor (RITRON P/N 47100000) must be soldered in the location of MR384. (In lieu of a zero ohm jumper, a small piece of wire may be carefully soldered between the pads.) The AUX OUT DC level then becomes nominally 1.67 volts.

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