User's Manual

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User Manual

YeonHwa M Tech Co.,Ltd

36, Jeonpa-ro 44beon-gil, Manan-gu, Anyang-si, Gyeonggi-do, Korea 14086

www.xradio.co.kr Email : sales1@xradio.co.kr

1. MD-100D/400D Digital RF Modem Main Functions

The MD-100D / 400D digital RF modem has standardized the external appearance and connector

specifications to maintain compatibility with existing analog modems.

It also supports voice call and data communication with DMR transceiver and standard.

When making a voice call, use external microphone and speaker as same as existing digital radio.

It is possible to use transmitter and receiver as a single device when it is used for the village

broadcasting.

In case of data communication, it can be used as a general data modem and it is designed to use AT

COMMAND.

RF Audio/Data Modem

MD-100D VHF

MD-400D UHF

Summary of content (18 pages)

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User Manual RF Audio/Data Modem MD-100D VHF MD-400D UHF YeonHwa M Tech Co.,Ltd 36, Jeonpa-ro 44beon-gil, Manan-gu, Anyang-si, Gyeonggi-do, Korea 14086 www.xradio.co.kr Email : sales1@xradio.co.kr 1. MD-100D/400D Digital RF Modem Main Functions The MD-100D / 400D digital RF modem has standardized the external appearance and connector specifications to maintain compatibility with existing analog modems. It also supports voice call and data communication with DMR transceiver and standard.
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MD-100D / 400D supports dual (analog / digital) mode. It is compatible with existing analog modem or transceiver. When using digital mode, it is very efficient in data error, clean sound quality and volume, distance and usage time. 32 channel can be selected by using internal DIP switch. MD-100D/400D Series main functions are below,  Frequency band - VHF: 150.8~173.4MHz, UHF: 400~470MHz.  1 Zones 32 channel selection (1zone = Max 32 channel) .  Total 32 channels can be set.
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Transmitter Specifications RF Output Spurious and Harmonic FM Hum and Noise Audio Distortion Audio Characteristics Output Impedance VHF : 10/2 Watt, UHF : 5/2Watt 70dB 40dB (12.5KHz) Less than 3% +1, -3dB from 6dB per octave pre-emphasis Characteristic from 300 ~ 3000Hz 50ohms 3. Specification 3.1 MD-100D/400D Overview MD-100D/400D are digital RF modem that supports data and voice communication.
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3.4 D-SUB 15Pin Connector Specification Pin NO Pin Name Pin Description I/O 1 Not use 2 Not use 3 PTT Low Active I 4 DC12V DC+12V I 5 CTS I 6 Carrier Detector O 7 MIC_IN 8 FLASH_PRO 9 SPEAKER_OUT 300mV @ 1KHz dEV O 10 RX_DATA 3.3V TTL I 11 TX_DATA 3.3V TTL O 12 RTS 13 GPS_TX_DATA 14 Ground 15 GPS_RX_DATA 30mV @ 2KHz Dev I I O 3.3V TTL O Ground 3.
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3.
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4. How to set DIP Switch 4.1. Dip switch setting Picture 4-1) Dip Switch TX Power setting and channel setting 4.2 TX Power Setting TX Power is changed by Switch No.6 Factory default TX Power value is High Dip Switch Power Value Low Power High Power Picture 4-2) DIP Switch RF Power Setting 4.3 Channel Setting There are two ways to set the channel: DIP switch and AT command. DIP switch channel setting method can be set by using DIP switch 1, 2, 3, 4, 5, total 32 channels.
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00001 2 00010 3 00011 4 00100 5 00101 6 00110 7 00111 8 01000 9 01001 10 01010 11 01011 12 01100 13 01101 14 01110 15 01111 16 10000 17 10001 18 10010 19 10011 20 10100 21 10101 22 10110 23 10111 24 11000 25 11001 26 11010 27 11011 28 11100 29 11101 30 11110 31 11111 32 5. MD-100D/400D Operation Mode MD-100D / 400D supports 3 modes: 1) AT Command mode and 2) continuous mode for keyboard input or file transfer using Tera term.
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MD-100D/400D operation mode 1) AT Command mode 2) 3 Wires continuous mode -. Operates in 3 Wire Mode (TXD, RXD, GND). 3) 5 Wires continuous mode (used for many data transmission) -. Supports H / W flow control using TXD, RXD, CTS, RTS, GND. When the MD-100D / 400D data modem is booted for the first time, AT Command mode is set. To change from AT Command mode to Continuous mode, use AT Command as shown below.
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Parameters AT*VOL= SET VOLUME()=() 1 ~ 16 AT*VOL? GET VOLUME(15)=(150) Example AT*VOL=5 SET VOLUME(5)=(47) 6.5 OID OWN ID setting is available only in CPS program, and can be checked in AT Command only. Description Query Answer Command for checking OWN ID AT*OID? OID:00000001 OK Parameters Example AT*OID? OID:00000001 OK 6.6 CHKSTAT Description Query Answer Status check command AT*CHKSTAT? *CHKSTAT:STAT OK OK Parameters Example AT*CHKSTAT? *CHKSTAT:STAT OK OK 6.
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CID[]:,CF: [반복] CALLID OK AT*CID=1 SET CUR-CID:01 CID[01]:00000002,CF:GRP CALLID OK Parameters Example AT*CID? CID[00]:00000001,CF:GRP CID[01]:00000002,CF:GRP CID[02]:00000003,CF:GRP CID[03]:00000010,CF:GRP CID[04]:********,CF:ALL CALLID OK 6.9 CHSET Description Query Answer Channel setting command (When this command is used, channel value changed by DIP Switch is ignored.
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Query Answer Parameters It is set according to Dip switch 6 at boot, and it can be changed with this command. AT*PWRLEVEL? GET PWRLEVEL= OK AT*PWRLEVEL= SET PWRLEVEL= OK 0 : Low Power 1 : High Power AT*PWRLEVEL? GET PWRLEVEL=0 OK Example AT*PWRLEVEL=1 SET PWRLEVEL=1 OK 6.13 VERSION Description Query Answer Parameters Example Command to check the modem version AT*VERSION *VERSION: AT*VERSION *VERSION:YEONHWA Modem v1.0 OK 1.
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2) AIR data transfer structure Since the DMR Data Modem operates in 2: 1 mode, the actual transmission is as follows. 2:1 TDMA : There are two slots (slot1, slot2(30m/s) in a single channel so it operates as the below picture. Figure 2: 1 TDMA structure 3. How to use RS232 / RS422 / RS485 / USB / GPIO / Ethernet connection 4. Did you use CTS and RTS for the cable? 1) The serial buffer of MD-100D/400D is 10Kbyte.
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When RTS is "LOW" (when the MD-100D/400D modem's serial buffer has space): The PC or external device sends normal serial data to the modem. When RTS is "High" (when the serial buffer of the MD-100D/400D modem is full): it stops sending serial data to the external device. When CTS is "LOW", data received by modem is transmitted to PC or external device. If it is HIGH, data is not transmitted to PC or external device.
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5. D-SUB 15Pin Change connector specification 1) 5 Pin : GPIO1 → CTS 2) 12Pin : SERIAL_BUSY → RTS Pin NO Pin Name Pin Description 1 Not use (Not use CTCSS/DCS) I 2 Not use (Not use CTCSS/DCS) O 3 PTT Low Active I 4 Vin(DC12V) DC+12V I 5 GPIO1 → CTS I/O→I 6 Carrier Detector O 7 MIC_IN 8 FLASH_PRO 9 SPEAKER_OUT 300mV @ 1KHz dEV O 10 RX_DATA 3.3V TTL I 11 TX_DATA 3.
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5. For Safe Operation 5.1 Precautions Do not remove the antenna from the radio or do not transform the antenna or do not make any changes on the antenna. The strong electronic wave to be emitted from the radio can have an effect on the performance of the radio and can cause the radio to have a defect. Do not use accessories (such as rechargeable battery, adaptor, external speaker microphone and earphone etc.) from the other makers, which can cause defect on battery and malfunction or a defect on the radio.
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Please do not use the radio at the place where computer or other electric/electronic devices are being used. The strong electronic wave from the radio can have an effect on the equipment. 6. Safety Notes Please make sure to read the followings above for safe and effective use of the radio. • An indication of the maximum antenna gain permitted to ensure compliance. this would be 1.5 dBi. • At the area where an electromagnetic force can be made, please make sure to turn off the power of the radio.
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8.
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Warranty Statement Thank you for purchasing MD-100D/ MD-400D Series. 1. This product has passed strict quality control and testing process by YeonHwa M Tech. 2. Warranty is one year from the day of release. • When there is malfunction of the product under normal operating conditions during the warranty period, your authorized dealer and the service center will repair it free of charge. 3.