INSTRUCTION MANUAL SOUND REPEATER EV-20R US B INP RE UT/ C IN L LIN EVE E L MIC HE PH ADON E PH O SP NES EA / KE R 10 MO D R EL NIT EC OR PL AY LO CK MO DE 1 PL AY /ST 2 OP 3 4 PO WE R SO UN DR EP EA TE RE V-2 0R Please follow the instructions in this manual to obtain the optimum results from this unit. We also recommend that you keep this manual handy for future reference.
TABLE OF CONTENTS 1. SAFETY PRECAUTIONS ............................................................................... 3 2. GENERAL DESCRIPTION ............................................................................. 4 3. FEATURES .......................................................................................................... 4 4. HANDLING PRECAUTIONS .......................................................................... 4 5. PRE-RECORDED AUDIO DATA ......................................
1. SAFETY PRECAUTIONS • Be sure to read the instructions in this section carefully before use. • Make sure to observe the instructions in this manual as the conventions of safety symbols and messages regarded as very important precautions are included. • We also recommend you keep this instruction manual handy for future reference.
2. GENERAL DESCRIPTION The EV-20R Sound Repeater is used to record and play back sounds produced from a microphone, CD player or other sources. Its particularly ideal applications include repeated broadcasts of the same message in schools, department stores and factories. Flash memory is used as a recording medium, and up to 4 different messages can be recorded and played back. The Sound Repeater also permits broadcasts to be made directly from the microphone or CD player without recording. 3.
6. NOMENCLATURE AND FUNCTIONS [Front] 10 USB HEADPHONES INPUT / REC IN PHONES/ SPEAKER LEVEL LINE MIC 0 10 MODE DEL REC MONITOR PLAY LOCK START/STOP 1 2 3 4 POWER SOUND REPEATER EV-20R 2 3 4 5 6 7 1. Power Indicator [POWER] Lights when the unit is powered up. 2. USB Communication Indicator Continuously lights or flashes during USB communications. 3. USB Terminal Connects to a PC or a USB hub using the supplied USB cable. 4.
[Rear] N29 DC IN 24V 400mA DC IN BUSY 24V OUT PLAY 1 – 4 / STOP 1 2 3 STOP 11 12 13 LINE IN E SIGNAL GND SOUND REPEATER EV-20R 14 15 TOA Corporation 16 C H LINE OUT E C SPKR H Tested to comply with FCC standards FOR HOME OR OFFICE USE INTERVAL DELAY TIMER ON 2s 4s 10s 30s 5s 1m 0s 5m 10m 1h 30m ENGINEERED IN JAPAN ASSEMBLED IN TAIWAN 17 18 19 20 21 22 11. AC Adapter Input Terminal [DC IN] Connects to the optional AD-246 AC adapter or its equivalent.
. OPERATION Input Terminal Headphone Terminal Start/Stop Indicator [Front] USB INPUT / REC IN HEADPHONES PHONES/ SPEAKER LEVEL LINE MIC 0 Input Level Selector Switch [Rear] DC IN 24V 400mA DC IN BUSY 24V OUT 10 MODE START/STOP DEL REC MONITOR PLAY LOCK 1 2 3 Mode Selector Switch PLAY 1 – 4 / STOP 1 2 3 4 SIGNAL GND Busy Output Terminal 4 POWER Start/Stop Key Class 2 Wiring / 8 – 16 Ω STOP LINE IN E C H LINE OUT E C SPKR H DELAY ON 2s 4s INTERVAL TIMER 10s 30s 5s 1m 0s
7.2. Confirming the Message (MONITOR) The contents of recorded messages can be monitored and confirmed. Messages being monitored can only be heard through the Headphone terminal and the Speaker Output terminal, and are not directed through the Line Output terminal. However, message output from the Speaker Output terminal is disabled if a headphone is connected. Step 1. Set the Mode Selector switch to the MONITOR position. The Start/Stop indicators for the recorded message numbers flash. Step 2.
7.6. Using the Input and Line Input Terminals to Broadcast Voice or audio from the microphone or CD player connected to the Input terminal (INPUT/REC IN) or the Line Input terminal (LINE IN) can also be broadcast, except during the monitor playback of messages 1 – 4 (MONITOR mode) and during playback (PLAY mode).
8. INSTALLATION 8.1. Mounting a Single Unit in an Equipment Rack Use the optional MB-WT3 Mounting Bracket to mount a single EV-20R unit. Bracket B *1 *1 Parts making up the MB-WT3 Bracket EV-20R US B INP RE UT/ C IN LE LIN VE E L MIC HE PH ADON E PH ON SP ES EA / KE R MO 0 DE RE L LIS C TE N PL AY LO CK 10 DE PL AY /ST OP 2 1 3 4 PO Fiber washer (for M5) SO UN *1 D RE PE AT ER WE R EV -20 R Rack mounting screw *1 5 x 12 Bracket A *1 8.2.
9. CONNECTIONS 9.1. Connection Example [EV-20R Front] USB INPUT/ REC IN HEADPHONES PHONES/ SPEAKER MODE 0 PC START/STOP DEL REC MONITOR PLAY LOCK LEVEL LINE MIC 10 1 2 3 4 POWER Headphone* USB cable (supplied with unit) or Microphone * No signal is output from the Speaker Output terminal if the headphone is connected. CD player, etc. Remote control input of power amplifier, etc.
9.2. Connections to the Rear-Mounted Connectors Notes • Use the appropriate type of screwdriver for the connector wiring screws. • When using stranded or shielded cable, do not solder the stripped and exposed ends. When the cable is clamped, the solder becomes crushed, increasing contact resistance and possibly resulting in an extreme rise in cable joint temperature. 9.2.1. Matching cable size Conductor cross-sectional area 0.5 – 1.5 mm2 AWG AWG24 – 16 9.2.2.
9.2.5. Line input and output terminal connections Both the Line Input and Output terminals can be converted into balanced types by using optional IT-450 Balanced Transformers. For details, consult with your TOA representative.
11. PLAYBACK INTERVAL SETTINGS The time interval between repeated message announcements can be set with the Playback Interval Setting switch on the rear panel. The repeat interval represents the time between the end of the previous message and the start of the next message. Set delay times are not added to the repeat interval. Set the indentation on the switch axis (marked in black in the figure at right) to the desired timer interval.
12. PLAYBACK OPERATIONS AND CONTROL I/O TIMING 12.1. Stopping Broadcasts during Manual Playback or Switching Message Playback Activation Stop Activation Start/Stop Key 1 Activation Start/Stop Key 3 Switching to Message 1 Delay time Output Stop Message 1 playback Delay time Message 3 playback Message 1 playback Busy output [Operation] • Pressing the Start/Stop key closes the Busy Output terminal until playback is completed.
12.2. Making Repeat Broadcasts Activation Stop Start/Stop key 1 (Start and Stop Inputs) When the busy output during repeat intervals is set to "Make" (ON) Output Delay time Message 1 playback Repeat interval Stop Silence Message 1 playback Busy output Broadcasts using the Input and Line Input terminals can be made.
12.3. Playing Back Messages through External Activation 12.3.1. Message activation 200 ms or longer If continuously closed Activation input 1 Busy output Delay time Output Stop Message 1 playback Message 1 playback 200 ms or longer Stop input [Operation] • Closing the Start Input terminal closes the Busy Output terminal and plays back the message after the set delay time elapses. Even if the Start Input terminal opens during playback, the message continues to be played back until it is completed.
13. USING THE SUPPLIED SOFTWARE The EV-20R is equipped with a USB interface jack. The following operations can be carried out by connecting a PC using the supplied USB cable: • Uploading the chime tone contained in the supplied CD-ROM. • Downloading recorded data to the PC. (Recorded data backup) • Uploading data backed up in the PC. For instructions regarding installation and use of the supplied software, read the "EV20 Software Instruction Manual.pdf" file located on the CD-ROM. 13.1.
13.3. Notes on Use of Software • When the EV-20R is in the following operating states, do not switch off its power nor insert or remove the USB cable. PC operation may stop. • While the driver software program is being installed. • While the OS is being activated or terminated. • During the course of being suspended or resumed. • While data is being transferred between the unit and the PC. • While the sound source is being written or read. • While the USB communication indicator is lit.
15. SPECIFICATIONS Power Source Supplied from an external 24 V DC / 400 mA power supply or from an optional AD-246 AC adapter or its equivalent Power Consumption 10 W (rated output) Wave Format 44.
