DMR Data/Voice MODEM module User’s Manual CM105(VHF) Version 1.
Revision History Revision Date Author 1.0 Feb.12.2020 HI Lee Status/Comments Initial Release SAMYOUNG CELETRA INC, CELETRA and Symbol logo are trademarks or registered trademarks of Samyoung Celetra Inc. ⓒ 2015 Samyoung Celetra Inc. All rights reserved. Samyoung Celetra Incorporated. 110 (Oryu dong) Geomdan-ro, Seo-gu, Incheon 22664, Rep. of Korea TEL :+82-32-561-6700, FAX :+82-32-715-7560 E-mail : sytc@sytcl.co.kr Importer information Leonardo – Società per azioni Piazza Monte Grappa n.
Important This user manual contains important information for operating instructions. Please read this manual carefully and completely before using CM105 Radio modem. For additional information on 2-way radio, visit the following websites : http://www.sytcl.co.kr http://www.celetra.co.kr Copyright Information The AMBE+2™ voice coding Technology embodied in this product is protected by intellectual property rights including patent rights, copyrights and trade secrets of Digital Voice Systems, Inc.
Federal Communication Commission (FCC) Regulations This module is intended for OEM integrator. The OEM integrator is still responsible for the FCC compliance requirement of the end product, which integrates this module. Any changes or modifications not expressly approved by the manufacturer could void the user's authority to operate this equipment. The OEM/integrator must test final product to comply with unintentional before declaring compliance of their final product to Part 15 of the FCC Rules.
FCC RF Exposure Requirements The external ¼ wave dipole antenna used with this module must be installed to provide a separation distance of at least 61 cm from all persons, and must not transmit simultaneously with any other antenna or transmitter, except in accordance with FCC multi transmitter product procedures. Antenna gain must not exceed 2.15 dBi(DMR) The antenna must be installed complying with the requirements of manufacturer or supplier. Antenna List: HW-146H-NPX100 : Helical antenna, Max -3.
1. Introduction 1.1 Overview The CM405 MODEM is designed for DMR Data/Voice communication purpose. It supports DMR Tier I, II protocol of ETSI Standard (ETSI TS 102 361). The CM105 MODEM is composed of aluminum die-cast housing with LED for status indicator, SMA RF connector and a main connector for Data communication service. 1.2 Features - Serial Communication interface (UART 3.3V Logic Level) - Operation status LED indicator (Power/CD/TX/RX) - 5 Watts Output Power.
Fig 1. CM105, Top Fig 2.
Fig 3. CM105 1.3 Interface Description - Power In ( 7.4V, 2000mA ) - Indication LED Red, Green LED - UART, 3wire (Tx, Rx, Gnd) interface Signal Level: 3.3V Parameter Value Speed (Baud rate) 38400 [bps] Data bits 8 Parity bit None Stop bit 1 Table 2.
1.4 Pin Description Fig 4. Pin Descriptions Pin Number Name Signal Level Note 1 Rx_Data 3.3V UART (Signal Level: 3.3V) 2 Tx_Data 3.3V UART (Signal Level: 3.3V) 3 Ext_PTT 3.
4 COR 3.3V Digital Out (High Active) 5 Audio_In_N 10mV (nominal) Analog In (Mic_N) 6 Audio_In_P 10mV (nominal) Analog In (Mic_P) 7 Audio_Out 1V (peak) Analog Out 8 Boot 0 9 GND 10 GND 11 GND 12 /Reset Digital Input (Low Active) 13 Vcc (7.4V) 7.4V±5% 14 Vcc (7.4V) 7.4V±5% GPIO_In (for upgrade F/W) Table 3. Pin Description 1.5 Antenna Connector RF Connector type: RP-SMA Connector (female) or SMA Connector (female) Fig 5. SMA Connector 2. Specifications 2.
General Description Remark Frequency Range UHF: 136~174 MHz Channel Capacity 512 Channel Spacing 12.5 kHz Operating Voltage DC 7.4V±5%, 2,000mA Frequency Stability 1.5 ppm Antenna Impedance 50 Ω Digital VOCODER AMBE+2 Analog Sensitivity -121 dBm Digital Sensitivity -117 dBm (1% BER) Intermodulation > 65 dB Adjacent Channel Selectivity > 60 dB Spurious Rejection > 70 dB Blocking > 84 dB Hum and Noise - 40 dB Audio Impedance 16 ohm Audio output Typ.
POWER Lit up at Power ON (Red and Green) CD Indicate carrier detection (Green) Tx Indicate transmit status (Red) Rx Indicate receive status (Green) Table 5. LED Indication 2.3 Internal Flash Memory (Option) CM405 MODEM includes an internal flash memory for voice recording. Capacity of the flash memory is 64Mbit(Optional). Maximum recording time is about 4.5hours. User can control the voice recording and play via AT commands. For more detailed information on AT command list document. 3.
Fig 6. Celetra Radio Tester 4.1 Set Connection Fig 7.
Successfully connect to the MODEM, Status indication changed to “Connected”. User can select the AT Command and send it to the MODEM. Right side of window display the related command explain and usage. Fig 8.
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