EM-38A QuikWave Audio Player
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Stereo MP3, near CD quality
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Trigger Input: 8
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Relay Output: up to 8
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Serial Port: 1 (RS-232/RS-485)
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Input Voltage: 12 - 30 VDC
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Output Power: 15W x 2
EM-38A is a rugged industrial MP3 player designed for the most demanding
jobs. Much like a CD player playing sound tracks from a CD, EM-38A plays
sound files from an SD/SDHC memory card but without the moving parts to
wear and tear. The unit conforms to the ISO 11172-3 MP3 standard (up to 320
Kbps) and provides better sound quality than other MP3 players supporting
256 kbps or less.
Audio programming for the unit is as simple as copying sound files to the
memory card via a card reader attached to the computer. The type of memory
cards used, the SD/SDHC cards, are most popular and readily available in a
number of capacities to suit different needs. Hundreds of tracks totaling hours
of audio can be stored onto an inexpensive card for instant playback.
Powered by a single voltage DC power supply,
EM-38A features a high efficiency low heat
class D power amplifier with thermal and
short circuit protection (automatic recovery). A
line level output is also available for feeding
an external amplifier if desired. Audio
playback can be triggered with a variety of
methods such as push buttons, motion/alarm sensors and PLCs.
EM-38A can be easily configured to work in different operation modes such as:
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Start the playback when the trigger is applied or removed.
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Allow the playback to be interruptible by another trigger or not.
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Play the sound just once or loop it till the trigger is removed.
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Toggle relays in sync with the audio (EM-38AR & EM-38AX only).
Housed in a compact yet rugged metal case, EM-38A can be easily secured into
place with supplied mounting brackets. Wiring is done via screw terminals and
requires only a small screw driver. The screw terminals are detachable, making
it fool-proof to replace the unit in the field when necessary.
Differences Between EM-38AR and EM-38AX
They only differ in the way the relays are controlled. Relays in EM-38AR can be
toggled before and/or after the audio playback, but not during. Whille EM-
38AX allows the relays to be toggled, in perfect synchronization with the audio,
at any moment during audio playback.
EM-38AM (ModBus support)
EM-38AM is basically the same as the EM-38A except that, instead of the
proprietary control protocol that the EM-38A supports, it supports the ModBus
control protocol on the serial port.
Available Models
EM-38A: no relay
EM-38AM: no relay, ModBus control
EM-38AR: 8 relays, basic control
EM-38AX: 8 relays, complex control
Downloads
EM-38A/AR/AX User’s Manual
EM-38AM User’s Manual
Typical Applications
Museum Exhibits Audio
Point-of-purchase Talking Displays
Audio Tour Guide
Transportation Announcements
Theme Park Sound Effects
Warning/Safety Reminders
Industrial Control Audio Feedbacks
Vending Machine Verbal Instructions
Optional Accessories
Power Amplifier AMP-1502HV
AMP-1502HV is a high efficiency class D power amplifier with a
maximum output of 15W per channel in stereo mode, or 55W in BTL
mono mode.
Constant-Voltage Transformer
HVTR1 bridges between low impedance and high voltage audio
devices so that low impedance amplifiers can drive high voltage
speakers, and vice versa.
Digital Switch Timer TMR-08
TMR-08 is a 7-day programmable switch timer with 8 internal relays
for triggering QuikWave audio players at preset times of the day,
once or multiple times a day and in any order.