Louroe Electronics ASK-4 Benutzerhandbuch
6955 VALJEAN AVE. VAN NUYS, CA 91406 PH: 818-994-6489 | FAX: 818-994-6485 | [email protected] | WWW.LOUROE.COM
VERIFACT™ “C” (LE-072)
Type Electrect Condenser
Output Line Level 0 dB @ 1KΩ,
unbalanced
Frequency Response 40 Hz to 15 kHz ± 1 dB
Current Drain 4 mA
Supply voltage 12Vdc
Dimensions 4”Dia x 1 ½”H
Weight (shipping) 0.12 Lbs (0.05kg)
IF-4 (LE-288)
Input Impedance 1KΩ
Output Signal 0 dB@600Ω
Power Supply 12Vdc, 500 mA
Dimensions 6 1/8”L x 4 5/8”W x 1 3/8”H
Weight (shipping) 2 Lbs (0.9kg)
ASK-4®# 304-C (LE-376)
ASK-4® #304-C is a four zone audio monitoring system designed for direct connection to a DVR, PC soundcard or IP Network Camera. Model IF-4 Inter-
face Adapter (usually mounted near the recording device) receives the wiring from the Verifact™ C Microphone, supplies power and drives the audio signals
into the DVR, IP Network Camera, Video Server or PC Soundcard.
Distance between the Verifact™ B Microphone and Model IF-4 Interface Adapter may be up to 1,000 ft.(305m) using recommended wiring. Each output of
the IF-4 has an audio level control to increase or decrease the level of audio output going to the receiving device. The microphones are designed to be used
in high ceiling applications. The standard length of the cable is 3’.
KIT CONTENT
PRD # Description
(4) Verifact™ C Microphone
(LE-072)
Line Level, Electret condenser microphone with preamp. Picks up normal sounds within 30’ circle. May be located Up to
1000’ from IF-4 Interface Adapter.
Model IF-4
(LE-288)
4 Zone Audio Interface Adapter. Provides power and gain and to microphones.
AD-1 (LE-242) listed AC ADAPTER. Supplies 12 Vdc to IF-4 and Verifact “C” Microophones.
(4) Single RCA Cable For connection to DVR, VCR, etc
(4) RCA to 3.5mm Mono
Adapter
For connection to an IP Camera with a Adaptor 3.5mm mono audio input
ASK-4®# 304-C
AUDIO MONITORING SYSTEM
INSTALLATION AND OPERATING INSTRUCTIONS
VERIFACT™“C” (LE-072)
IF-4
Mic Input
Terminal
Block
Mic Input
Terminal
Block
Power LED
Audio Indicator
Volume Control
12Vdc Power Jack
Audio Out 4
Audio Out 3
Audio Out 2
Audio Out 1
MIC INPUTS
AUDIO OUTPUTS
6955 VALJEAN AVE. VAN NUYS, CA 91406 PH: 818-994-6489 | FAX: 818-994-6485 | [email protected] | WWW.LOUROE.COM
ASK-4®# 304-C
AUDIO MONITORING SYSTEM
INSTALLATION AND OPERATING INSTRUCTIONS
AUDIO IN
Terminal block Identier
for Microphone
(A) Red - 12Vdc power
(B) Black - Audio Output
(C) Bare - Ground
RCA Connection Cable
RCA Audio Input
RCA to 3.5mm MONO
AD-1 AC Adapter
12V/12Vdc, 500mA
DVR WITH RCA TYPE AUDIO INPUTS VIDEO SERVER
IP NETWORK CAMERA
INTERCONNECTION DIAGRAM
IF-4 (LE-288)
VERIFACT™“C” (LE-072)
WIRING REQUIREMENTS
Both the Verifact™ “C” Microphone and IF-4 Interface.
2 Conductor shielded cable, 22 gauge with a 24 gauge drain
wire.
NOTE: Unshielded cable is not satisfactory for audio systems
PLUG IDENTIFICATION
RCA PLUG 3.5 MONO
One Band MONO
3.5MM STEREO
Two Band STEREO
IF-4
Audio Output Control MIC Input +12 Vdc
AUDIO OUTPUTS
MIC INPUTS
A B C
OR OR
Two bands stereo
One bands stereo
A B C A B C A B C A B C
1 2 3 4
12 34
6955 VALJEAN AVE. VAN NUYS, CA 91406 PH: 818-994-6489 | FAX: 818-994-6485 | [email protected] | WWW.LOUROE.COM
ASK-4®# 304-C
AUDIO MONITORING SYSTEM
INSTALLATION AND OPERATING INSTRUCTIONS
INSTALLATION INSTRUCTIONS
WIRING CONNECTIONS
Located at the bottom of the Verifact™ “C” microphone is a 3-pin termi-
nal block marked A, B, and C.
A Red 12Vdc power
B Black Audio output of microphone
C Bare Ground (common)
After all microphones have been connected, bring the other end of the
cable to the IF-4 location and connect each microphone to the corre-
sponding terminal block of the unit matching A to A, B to B, and C to C.
Be sure to properly match wire colors. If using cable from other manu-
facturers, color code may vary.
APPLYING POWER TO THE IF-4
Included with the IF-4 is a power supply (120V/12Vdc). Connect the
small end of the 90° female plug into the 12Vdc jack, located on the
input side. Then connect the two-prong large end into a standard
110/120V electrical outlet.
Turn ON/OFF power switch, located behind green power LED to ON
position. The green LED will illuminate, indicating power to the system.
The system will now provide audio to the DVR, Soundcard Module, IP
Network Camera, etc.
AUDIO LEVEL ADJUSTMENT
Located on the input side are potentiometers (round, with adjustment
arrow) for each microphone. This is for adjusting the audio gain and to
prevent overdriving or underdriving the audio signal.
The adjustment arrows are shipped in the straight-up position. Turn
slowly counterclockwise to lower the gain, and clockwise to increase.
This will provide the desired level of audio signal into the Audio Re-
ceiving Device (DVR, Soundcard Module, etc.). A full turn clockwise
increases the gain to 10dB. A full turn counterclockwise will decrease
the gain 30dB.
AUDIO TEST SWITCH
The purpose of this switch is to indicate the presence of audio and to
assure the user that the IF-4 is driving the audio signals into the au-
dio input of receiving device (DVR, IP Network Camera, Video Server,
Soundcard module, etc.)
Located on the audio output side of IF-4 is a DIP switch labeled Audio
Test Switch. To the left of the switch is a red LED marked Audio Indi-
cator.
For testing:
1. Select a zone that has a microphone connected to the microphone
terminal block. IF-4 utilizes pins 1-4.
2. Push pin to the ON position. The red LED will illuminate, indicating
audio is present. With short bursts of audio, the LED will icker
and with continuous ow of audio LED illumination is constant.
Only one microphone can be tested at a time
NOTE: When testing is complete, all pins of the DIP switch must be
in the OFF (down) position.
CHOOSE YOUR SETTING
DVR/VCR - RECORDING INSTRUCTIONS
Connections between IF-4 and DVR (or other audio receiving de-
vice). Connect the rca outputs of the IF-4 to the corresponding audio
inputs of the receiving device. RCA and RCA to 3.5mm mono adapters
are included in the kit.
IP NETWORK CAMERA INSTRUCTIONS
Connection between IF-4 and an IP Network camera, DVR, Video
Server with 3.5Mm mono type audio connections. To make connection
to ip network camera, plug the rca to 3.5Mm mono cable with adaptor
(supplied) into the rca audio out jack located on the output side of if-
4, connect other end of cable (3.5mm) to the camera’s audio in jack.
NOTE
SENSITIVITY SWITCH OF MICROPHONE
For special installations that require less microphone sensitivity, a sen-
sitivity switch has been added to the microphone pre-amp (PC board)
and has two positions - N and L: N represents normal sensitivity (0dB
output into 1KΩ) L represents low sensitivity (-6dB output into 1 KΩ).
NOTE: Louroe Verifact™ microphones are always shipped with the
sensitivity switch in normal (N) position. Do not change unless re-
quired. To make an adjustment, use a small screwdriver and move
slide switch from N to L. Sensitivity switch is located on the backside
of Verifact™ “C” Microphone.
6955 VALJEAN AVE. VAN NUYS, CA 91406 PH: 818-994-6489 | FAX: 818-994-6485 | [email protected] | WWW.LOUROE.COM
MADE IN U.S.A
IMPORTANT NOTICE
When this equipment is used as part of an audio moni-
toring system, the law requires that the public be given
notice of AUDIO MONITORING ON THE PREMISES. A
decal notice is included with each microphone shipped.
FEDERAL LAW REFERENCES:
Federal Regulations, US Code, Title 18. Crime and
Criminal Procedure, Sec 2510.
WARRANTY
LOUROE ELECTRONICS® warrants that at the time of shipment products
manufactured by LOUROE ELECTRONICS® to be free of defects in mate-
rial and workmanship. Should a defect appear within one year (12 months)
from date of shipment, LOUROE ELECTRONICS will, at its sole discre-
tion, repair or replace the defective equipment. This equipment shall not be
accepted for repair or return without prior notication by LOUROE ELEC-
TRONICS®.
This warranty does not extend to any Louroe product that has been sub-
jected to improper or incorrect installation, misuse, accident, or in violation
of installation instructions provided by LOUROE ELECTRONICS®.
Returned shipments to LOUROE ELECTRONICS® shall be at customer’s
expense. LOUROE ELECTRONICS® will return the equipment prepaid via
best way.
6955 VALJEAN AVE. VAN NUYS, CA 91406 PH: 818-994-6489 | FAX: 818-994-6485|
WORLD LEADER IN AUDIO MONITORING TECHNOLOGY
ASK-4®# 304-C
AUDIO MONITORING SYSTEM
INSTALLATION AND OPERATING INSTRUCTIONS
ABOUT LOUROE ELECTRONICS
Located in Van Nuys, California and 32 years young, Louroe Electronics™
has been the world leading Audio Manufacturer. Our continued growth
has resulted from providing innovative products, receiving high customer
satisfaction, maintaining strict devotion to quality standards and following
the law in Federal, State and Municipal Jurisdiction.
Our “Verifact” line of amplied microphones, complementing base stations,
and communication accessories, provide line level output to interface with
various digital electronics. Our products are compatible with a wide range
of digital video recorders, video cassette recorder, Internet Protocol Net-
work video systems, video servers and computer based recorders.
We are recognized worldwide for our variety of audio monitoring technol-
ogy. Our products are used in over twenty countries and are utilized in both
the private sector and government applications. We currently serve the
needs of law enforcement, security, health care, entertainment, hospitality
and retail industries and many more.
At Louroe Electronics we maintain rigorous standards to ensure our
products provide reliability, durability and excellent performance for our
customers’ needs. We are proud to continue designing, engineering and
manufacturing at our headquarters base in Van Nuys, California.
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