DEV-2420 User's Manual
Contents
1. 0 B G NC 05 2420 B S NC 05 plus GPS Omni Antenna 2420 B R NC 05 2420 B S NC 05 plus RFID reader option 2420 X X XX 35 Increasing voice recording time up to 3 hours and 30 minutes 2420 B S NC 05 2420 B G NC 05 2420 B R NC 05 2420 X X G3 XX Motorola GP328 338 connecting socket set DEV 2420 BS Options Base station for DEV series including audio balance input and output and RS 232 data port to computer Li Ion battery voice recording GPS with Omni Antenna RFID reader option Motorola GP328 338 connecting socket set RITI TECHNOLOGY INC 112. DEV 2420 Digital Encrypted Voice Communication Device V1 0 Users Manual A Inc Sr eA BAS PRA Oo 16F No 716 Chung Cheng Road Chung Ho City Taipei Hsien Taiwan DEV 2420 V1 0 07 02 17 Table of Content OVA dl iia 3 I Arto dci aia 4 1 1 A ee ee ee ee 5 1 2 NO tattoo dilata 5 13 o Sennett aT CCN ST Sp Re Crete ee testes terion on ue mt mT Hernan ate Me rer Troe 5 4 Batterien RR RR 5 Il Operate yout DEV 2A 2 Os ai 6 WAP Connecting o ur eee 6 2 A ET 7 HI System O petalos A RR A A tab ta pa as RiR 7 Ih loser 8 IIl 2 radio to from a base station ccccccecccssssscesssssesessscceccssscecssscecessccesssssesesvssscesatsceensaceees 8 III 3 Radio to from a location based base station oicococionncnononononananononanananenanococanocnonanonons 9 IM Technical Specifications u een 9 Ve Trouble SOLA ode 10 VI Entire DEV 2420 product a aiaia 11 RITI TECHNOLOGY INC 2 DEV 2420 V1 0 07 02 17 Disclaimer All rights reserved No part of this manual may be reproduced and transmitted in any form without written consent of the RITI Technology Inc The content of this document may be modified by the RITI Technology Inc without further notice Overview Charge Battery Microphone Indicator LED Speaker Push To Talk Rewind Volume Down Forward Volume Up Replay Pause RITI TECHNOLOGY INC 3 DEV 2420 V1 0 07 02 17 l Introduction DEV 2420 was designed to provide a conventional two way V
3. HF UHF radio with an inexpensive digital encrypted voice communication capability With this device customers not only upgrade their voice communication quality from analog to digital but have the added advantage of encrypting voice through advanced digital encryption computation DEV 2420 carries out its voice compression via multi band excitation MBE coding which provides high compression with very good voice quality Field tests show that with this device a user can clearly differentiate the distinct traits that distinguish individual voices The MOS Mean Opinion Score of the voice quality of DEV 2420 is about 3 0 when the voice is compressed down to 2000 bps DEV 2420 s encryption is achieved via a highly complex nonlinear serial scheme with a default 128 bit key length optional 256 bit version can be provided upon request At the design stage DEV 2420 takes into consideration the interference among various radios To minimize this problem MSK modulation is adopted to achieve high tolerance to interference The 2400 bps transmission speed functions well within 12 5 KHz channel capacity By digitizing voice DEV 2420 is capable of real time recording During the communication it stores the digitized voice in a Flash memory IC Users can retrieve and listen to this content via a special key on the board Two recording lengths are available 50 minutes and 3 5 hours Designed to work with handheld radios DEV 2420 is also equipped wit
4. TI TECHNOLOGY INC DEV 2420 V1 0 07 02 17 111 3 Radio to from a location based base station Communicate between a base station and radios for both encrypted digital voice communication and location based applications or EPMS applications GIS Station IV Technical Specifications GENERAL VOICE ENCRYPTION Power source 3 7V 320mA Li Ion Voice Multi Band Battery compression Excitation Battery time 12hours 1 1 8 TX 1 Compression 2000bps RX 1 Stb 8 rate Working temp 10 C 80 C Encoder Delay 43 5mS MIC 45dB 30cm Decoder Delay 17 5mS sensitivity Audio Output power 1 2W 8Q Synchronized 450mS time LED PTT PLAY CHARGE MOS 3 0 instruction Working half duplex Encryption complex nonlinear format computation series Modulation MSK Key length 128bit default or 256bit optional RITI TECHNOLOGY INC 9 DEV 2420 V1 0 07 02 17 TX Data rate 2400bps Key change new key after every communication Bit Error Rate 1 5X10 3 SNR 12dB Individual ID CID 2 Frequency 1575 42MHz System ID SID 2 Channels 12 Frame sync 2seconds Start lt 43 sec Cold cycle lt 3 sec Hot Frame sync greater than 0 999 when Antenna Omni Antenna accuracy rate error code rate is less than 1x10 Error every 20byte interleave correction coding or 20 bit of sudden error can be Frequency 125KHz corrected or every 3 random errors under 6 Readin
5. There is a RS232 port on DEV 2420 BS to communicate with a base station PC for applications DEV 2420 can be expanded to receive GPS location data or RFID data which are mutually exclusive for location based applications such as mobile resource management and electronic patrol management system EPMS For mobile resource management application location data will be sent every 2 second back to the base station PC via DEV 2420 BS during the talk mode Thus the location of the mobile resource can be tracked 1 Since communication talk or listen vis DEV 2420 is digitized and encrypted automatically only users with the same authorized encrypted key can communicate with each other RITI TECHNOLOGY INC 7 DEV 2420 V1 0 07 02 17 dynamically or stored as history data For EPMS application a RFID reader is included in the DEV 2420 By posting RFID card at each patrol location the patrol status can be recorded dynamically transmitted via DEV 2420 and monitored by the base station PC If you ate interested in these applications please contact us for more detailed briefing The technical specs are given in Section IV In the following sub sections three possible configurations are presented III 1 radio to radio Communicate between radios with encrypted digital voice communication only a nl 11 2 radio to from a base station Communicate between a base station and radios with encrypted digital voice communication RI
6. g Range 7 10cm random errors could be corrected with higher than Transponder Read Only 0 99 probability Options Trouble Shooting Problem Possible solutions The receiver 1 Check if receiving end also equipped with our DEV product can t hear your 2 Make sure radios tune at the same frequency voice 3 Make sure you have turned off the radio s COMPANDER function 4 make sure you and your receiver belong to the same authorized group Poor 1 check if you are within the limit of the radio reception area or in a communication poor reception area quality 2 check if your radio battery running low If so please recharge it 3 if DEV 2420 beeps 3 times in every 10 second you will need to recharge your battery 4 Make sure you have turned off the radio s COMPANDER function The beginning After you press Push to Talk please wait for du sound before portion of the you talk voice recording get cut off No response Make sure you need to press the key for more than 0 1 second and the after key is replay button needs 3 seconds pressed Note If you can t solve your problem please contact us RITI TECHNOLOGY INC 10 DEV 2420 V1 0 07 02 17 VI Entire DEV 2420 product line P N Description 2420 N S NC 00 connecting cable included without any option 2420 B S NC 05 2420 N S NC 00 plus Li Ion battery 50 minutes voice recording 242
7. h a rechargeable Li Ion battery and power management module to deal with the issue of power source unavailability Meanwhile optional modules are available to further enhance DEV 2420 as needed for your operations As position fixed is the most demanded capability for mobile communication DEV 2420 offers an optional GPS module that is small and lightweight and features high sensitivity high reliability and low power consumption A special mini all directional antenna is designed for this module With this GPS module every time PTT Push to Talk is pressed DEV 2420 will automatically send out the position information after the voice communication is completed The position information is thereby recorded along with the communication For special applications such as fixed route patrol DEV 2420 also offers a RFID reader module option that is an integral part of the RFID based Electronic Patrol Management System EPMS With this option Section 13 users can read the RFID information placed on the patrol location and send back all patrol information to headquarters for patrol management This option is exclusive of the GPS option i e they cannot be available at the same time RITI TECHNOLOGY INC 4 DEV 2420 V1 0 07 02 17 11 Package Your package should contain the items in the following table Upon opening the package if you find any item missing please notify your distributor immediately I
8. n the charging hole at the top and plug the charger into any 100 240 volt AC outlet During the charging the indicator light LED blinks twice every 3 second in green When charge is complete the blink becomes slower once every 3 seconds RITI TECHNOLOGY INC DEV 2420 V1 0 07 02 17 Figure 1 1 Charging DEV 2420 Note Do not use the charger to charge the DEV 2420 when it is connected to the radio ll Operating your DEV 2420 11 1 Connecting to your radio U Please turn off the radio s COMPANDER function before connecting to your radio UL Please check carefully if you have the right type of product compatible with your radio The device could be damaged by the use of incompatible type Fig II 1 connecting to 2 way radio U Open the protective cap of the connector on the right side of the radio and screw tightly the DEV 2420 cable to it Fig 11 1 UL The device is in stand by mode if the indicator light blinks once every 3 RITI TECHNOLOGY INC DEV 2420 V1 0 07 02 17 seconds in green or twice in 3 seconds radio is charging the DEV 2420 L Turn the radio to the designated frequency and DEV 2420 is ready to use 11 2 Ready to communicate O TALK Pressing the Push to Talk button and waiting for ready tones a long du sound to stop you are ready to talk The best result is to hold the DEV 2420 2 5 cm to 5 cm away from your mouth When talking the Indicator Light stays in red LISTEN Whe
9. n you hear someone calling you the Indicator Light turns green U RECORD With recording option every incoming or outgoing communication section will be recorded automatically The amount of recording depends on the option you purchased up to 3 hours and 30 minutes VOLUME You can only control the volume when the device is in standby or listening modes Press more than 0 1 second Rewind Volume Down and Forward Volume Up buttons to control your volume The volume is divided into 7 grades U REPLAY When Replay button is pressed for more than 3 seconds DEV 2420 will replay the recorded communication starting from the beginning of the last section if the section is less than 1 minute and 30 seconds or the beginning of the section containing this 1 minute 30 second marker Press Rewind Volume Down or Forward Volume Up buttons to move recording backward or ahead one section To stop press Reply Pause button Note When battery low voltage alerts dududu sound every 10 seconds DEV 2420 will stop transmitting receiving and recording functions If you press PTT button at that time the dududu sound will become every 2 seconds lll System Operations Two radios equipped with DEV 2420 can communicate with each other Base station DEV 2420 BS which has the same voice encryption and digitization functions with1U frame size can be used to communicate with a DEV 2420 equipped radio
10. tem Content QNT Standard Package 1 Main DEV 2420 Unit 1 2 User s manual 1 3 Quick start Option 1 AC Charger 1 2 Connector 1 1 2 Notices A Fully charge your battery before your first operation Please make sure you have the right type of DEV 2420 for your radio RITI Technology Inc will not be responsible for the damage on either DEV 2420 or your two way radio if it is caused by the miss use of incompatible unit U Please turn off the radio s compander function before your first operation For compander function related information please contact your local radio distributor Please observe any safety regulations related to the operation of two way radio when using our device A This product should only be serviced by trained personnel approved by RITI Technology Inc who will not be responsible for the damaged caused by the unauthorized maintenance 13 Warranty The warranty period for this product is one year but it will not cover the following 1 4 a a a a a Damaged caused by improper use of this product Do not operate this product according to this manual Not maintained or repaired by personnel authorized personnel Damaged by events such as fire flood and others caused by mother nature Damaged by improper transportation Battery When battery is low the unit will beep every 10 seconds The battery needs to be charged by charger supplied with the package To charge please open the protective cap o
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