Elk products ELK-120 User Manual

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http://www.elkproducts.com Email: [e-mail]

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Accessories

Recordable V oice

Module And Siren

ELK-120

APPLICATION:
The ELK-120 is a 2 channel custom recordable

voice module and 2 channel siren driver. Re-

cordable channels provide 10 seconds of mes­sage each, or one 20 second message when
combined. Siren channels offer choice of three
sounds: Temporal Coded Bell, Yelp, or Indus-

trial Buzzer.

Recordable Voice

Module And Siren

ELK-120

FEATURES:

•Two Recordable Voice Channels: Up to 10

seconds of message each or one 20 second
message when combined

•Two Siren Channels with Bell, Yelp, or Buzzer

•Temporal Coded Bell meets ANSI standard for

Audible Emergency Evacuation Signaling

•Recordings stored in nonvolatile memory

•Positive or negative voltage triggering

•Voice channels accept momentary triggers

•"One shot" or continuous voice play settings

•Built-in condenser microphone for recording

•Auto channel select from a single input - steady

or pulsing

•Adjustable speaker volume and current draw

•Powerful 24 watt audio amplifier

•PC sound card interface connector

SPECIFICATIONS:

•Operating Voltage: 9 to 14 Vdc

•Adjustable current draw: 1/4 to 1.8 Amps

•Low current triggers: 9 to 14 Vdc @ 30 mA

•Maximum sound level: 122 dB @ 1 meter

•Maximum speaker loading: 4 Ohms

•Pulsing input: 1/2 to 2 PPS, 50% duty cycle

•Size: 3" x 5" x 1.25" (76 x 127 x 32 mm)

Features and Specificaions subject to change without notice.

Optional ELK-129 Computer Interface may be

used to record sounds from a PC.

[phone] Voice
[phone] Fax
http://www.elkproducts.com
email: [e-mail]

PO Box 100 • Hwy. 70W • Hildebran, NC 28637 • USA

Instructions Printed On Inside

OPERATION

Overview

The ELK-120 is a two channel recordable voice module and
two channel siren driver. Voice messages are stored in non­volatile memory and may be re-recorded as needed. Each
channel can be activated by a positive (+) 9-14 Vdc input
supplied from a control panel or switched power source.
The ELK-120 also has a negative (-) input terminal -VS as
explained in these instructions.

Connect the ELK-120 according to one of the diagrams under
"INSTALLATION & HOOKUP EXAMPLES".

Positive (+) Trigger Input Channels

There are four (4) positive (+) trigger input channels. The
inputs for voice are marked +V1 (Channel 1) and +V2
(Channel 2). The siren inputs are marked +S3 (Siren,
Channel 3) and +B4 (Bell, Channel 4). These inputs may be
activated separately or combined (activated at the same time)
to achieve mixed playback of voice and siren sounds.

NOTE: If a pulsing voltage is applied to Channel 3 (Yelp) +S3,
the ELK-120 will automatically play the Channel 4 (Temporal
Coded Bell) sound.

Negative (-) Trigger Input Channel

The ELK-120 has one (1)negative (-) trigger input marked

-VS, for control panels (such as DSC) that have a switched
negative alarm output. This input internally activates
Channels 3 and 1 together if a steady input is applied, and
Channels 4 and 2 if a pulsing input is applied. For example:
when a constant negative (-) is applied to this input, the voice
message in channel 1 will be played followed by the channel
3 (Yelp) siren sound. If a pulsing negative (-) is applied, the
voice message in channel 2 will be played followed by the
channel 4 (Temporal Coded Bell) sound.

Voice Record Time

The maximum record time is 10 seconds per channel, or 20
seconds total. The ELK-120 allows one long 20 second
message to be recorded into Channel 1 provided Channel 2
is not used. Care must be taken not to exceed the allowable
time when recording. If a message recorded into Channel 1
exceeds 10 seconds then do not use Channel 2. If Channel
2 were triggered, only the end of Channel 1's message
would be heard.

WARNING: If more than 10 seconds is recorded into
Channel 1, then any message recorded into Channel 2 will
cause part of Channel 1's message to be lost.

Channel 1 (+V1)

Channel 1 (+V1) Channel 2 (+V2)

Figure 1 -

Record Time In Seconds

10

Activating The Voice Channels (Playback)

Continuous (maintained) trigger: To playback a message
recorded on Channel 1 or Channel 2, apply a positive (+) 9 to
14 Vdc to terminal +V1 for Channel 1, or to terminal +V2 for
Channel 2. The message will play (and repeat) for as long
as the power is applied, provided Jumper JP2 ("Close For
Single Play") is in the Open position. See Figure 2.

Momentary trigger: Connecting terminals +12V and Neg to a
constant (+) 9 to 14 Vdc power source allows voice
channels to playback with a momentary trigger voltage. All
operating power is drawn from the constant power source.
Current draw from the +V1 and +V2 input triggers will then
be approximately 30 mA. In the momentary trigger mode
each message is played through to the end (one cycle).

DO NOT
RECORD
LONGER
THAN 20
SECONDS.

20

Recording Voice Messages

It is imperative that Jumper JP1 be in the closed position (C)
to enable the on-board microphone. In addition, jumper JP2
should be in the open (O) position so that playback will be in
the continuous Loop mode. See Figure 2.

To record a voice message, activate the desired channel in
the continuous trigger mode by applying a positive (+) 9 to 14
Vdc voltage to the input (+V1 or +V2). The ELK-120 will start
playing the message (if any) that was previously recorded.
While the message is playing, press and hold the record
switch SW1, then speak clearly into the on-board micro­phone. Release the record switch at the end of the
message or at the end of 10 seconds, whichever comes
first. When the record switch is released the new message
will immediately be played. Remove the trigger voltage to
stop the message playback. To change the message or
correct a mistake repeat the above procedure. To record the
other channel apply the trigger voltage to that channel and
repeat the above procedure. If more than 10 seconds is
required, a 20 second message may be recorded into
Channel 1 provided Channel 2 is not used.

Continuous Loop Playback or One Shot

Jumper option, JP2 ("Close For Single Play") can be used
to lockout the voice messages after a single play. The trigger
for the channel must then be removed and/or reapplied
before the message will be played again.

O (Open)
C (Closed)

Jumper is closed
when shorting plug
is installed on these
bottom two 2 pins.

Figure 2 - Jumper Selections

Jumper is open
when shorting plug
is installed on these
top two 2 pins.

Siren Sounds

A choice of three (3) sounds (Temporal Coded Bell, Yelp,
and Industrial Buzzer) may be obtained from the siren
channels. Applying a positive (+) 9 to 14 Vdc trigger voltage
to the specified input(s) will activate the corresponding
sound. Terminal +S3 activates the Yelp sound, and terminal
+B4 activates the Bell sound. Applying the same trigger to
terminals +S3 and +B4 at the same time will produce the

Industrial Buzzer sound.

Mixing Siren Sounds and Voice Messages

To combine a siren sound with a voice message simply apply
a positive (+) 9 to 14 Vdc trigger voltage to any siren input
and any voice input at the same time. EG: To obtain a
burglary warning message on channel 1 followed by the
Yelp siren sound, simply apply a trigger voltage to channel
+V1 and +S3 at the same time. The two channels will
alternately play until the trigger is removed.

Exception: Voice channels 1& 2 can be set to play only
once per activation cycle by placing jumper JP2 ("Close
For Single Play") in the closed position. The siren sound(s)
continue until the activation input is removed.

Volume and Current Adjust

Turning the Volume Increase knob clockwise increases
the speaker volume. The louder the volume, the higher the
current draw. The volume and current draw may be
adjusted to match the current capability of power input.

NOTE: The output level of the siren sounds have been
factory set to be compatible with the voice message sound
levels. To maximize the siren output, cut resistor R9 (located
below and to the left of the volume adjust knob).

Computer Sound Card Interface (ELK-129)

The recordable Channels may also be programmed using a
PC equipped with a stereo sound card and the ELK-129
Sound Card Interface. Plug the ELK-129 into the J1
Programmer connector and place jumper JP1 in the open
position to disable the on-board microphone.