Bogen VAR1 Voice Activated Relay for 70V Paging Systems User Manual

Model var1, Voice-activated relay

DESCRIPTION

The VAR

Voice-Activated Relay is a DPDT relay device that is

activated when an audio signal is detected at the microphone pre-
amp or at 70V, 25V, or 600-ohm line level inputs. It has a number
of useful applications, such as muting a sound system in response
to a microphone or telephone page, activation of accessory (secu-
rity) equipment, or activation of a zone paging module.
A slide switch is included to select the pre-amp or the line inputs.
The VOX detect circuit also includes volume, sensitivity, and delay
controls. The audio output is an isolated 600-ohm transformer.
The unit operates from a DC power source (not included).

INSTALLATION

Set input source switch on the top side of the unit to LINE if
using one of the line inputs or to MIC if using a microphone.

Connect a power supply to the

2 to 24V DC jack on the top of

the unit or to the + and - screw terminals. The Bogen model
PRS40C power supply is recommended.

WIRING

Refer to the block diagrams and the sample wiring diagrams on
the next page to wire the VAR

for your application.

OPERATION

Sensitivity can be adjusted according to the needs of the applica-
tion. Clockwise rotation of the control increases sensitivity. Do
not over rotate the control or you may damage the trimpot.
The delay control is also adjustable in the field. The maximum
delay time is 25 seconds. Clockwise rotation of the control
increases delay time.

SPECIFICATIONS

LINE INPUT

Impedance: 600 ohms
Frequency Response:

00 Hz to

0 kHz

70V Input Impedance: 200k ohms
Output Level: 400 m VRMS
25V Input Impedance: 75k ohms
Output Level: 420 m VRMS

MIC PREAMP

Gain: 62 dB
Sensitivity: 750 m VRMS for

VRMS out

Distortion: <2%
Frequency Response: 200 Hz to

0 kHz

Output Signal-to-Noise Ratio: 55 dB

GENERAL

VOX Sensitivity: 20 mV -

50 m VRMS

@ 600 ohms Line input

Time Delay Range (approx.): 0.25 to 25 sec.
Relay Contact Rating: 2 amps/30V DC,

0.5 amp/

20V AC

Power Requirements: External

2V to 24V DC @

00 mA (not included)

SERVICE

There are no user serviceable components within the VAR

. The

warranty may become void if the unit is serviced by other than
an authorized Bogen service agency.
Contact the Bogen Applications Department if you have any
questions concerning VAR

applications.

www.bogen.com

Limited Warranty; Exclusion of Certain Damages:

Bogen Voice-Activated Relay is warranted to be free from defects in material and workmanship for two (2) years from the date of sale to the original purchaser.
Any part of any Bogen product covered by this warranty that, with normal installation and use, becomes defective (as confirmed by Bogen upon inspection)
during the applicable warranty period, will be repaired or replaced by Bogen, at Bogenʼs option, provided the product is shipped insured and prepaid to: Bogen
Factory Service Department, 50 Spring Street, Ramsey, NJ 07446, USA. Repaired or replacement product will be returned to you freight prepaid. This warranty
does not extend to any of our products that have been subjected to abuse, misuse, improper storage, neglect, accident, improper installation or have been
modified or repaired or altered in any manner whatsoever, or where the serial number or date code has been removed or defaced.

THE FOREGOING LIMITED WARRANTY IS BOGENʼS SOLE AND EXCLUSIVE WARRANTY AND THE PURCHASERʼS SOLE AND EXCLUSIVE REME-
DY. BOGEN MAKES NO OTHER WARRANTIES OF ANY KIND, EITHER EXPRESS OR IMPLIED, AND ALL IMPLIED WARRANTIES OF MER-
CHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED AND EXCLUDED TO THE MAXIMUM EXTENT ALLOWABLE
BY LAW.

Bogen's liability arising out of the manufacture, sale or supplying of products or their use or disposition, whether based upon warranty, contract, tort

or otherwise, shall be limited to the price of the product.

IN NO EVENT SHALL BOGEN BE LIABLE FOR SPECIAL, INCIDENTAL OR CONSEQUENTIAL

DAMAGES (INCLUDING, BUT NOT LIMITED TO, LOSS OF PROFITS, LOSS OF DATA OR LOSS OF USE DAMAGES) ARISING OUT OF THE MANU-
FACTURE, SALE OR SUPPLYING OF PRODUCTS, EVEN IF BOGEN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES OR LOSSES

Some States do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may not apply to you. This
warranty gives you specific legal rights, and you may also have other rights which vary from State to State.
Products that are out of warranty will also be repaired by the Bogen Factory Service Department -- same address as above or call 201-934-8500. The parts
and labor involved in these repairs are warranted for 90 days when repaired by the Bogen Factory Service Department. All shipping charges in addition to
parts and labor charges will be at the owner's expense. All returns require a Return Authorization number. For most efficient warranty or repair service, please
include a description of the failure.
Products manufactured and labeled by other companies may be covered by warranties offered by such companies. Please call Bogen Customer Service or
refer to product packaging for manufacturerʼs warranty for non-Bogen branded products.

12/2008

VOICE-ACTIVATED RELAY

Model VAR1