6955 VALJEAN AVE. VAN NUYS, CA 91406 PH: 818-994-6489 | FAX: 818-994-6485 | [email protected] | WWW.LOUROE.COM
ASK-4
®
# 304
AUDIO MONITORING SYSTEM
INSTALLATION AND OPERATING INSTRUCTIONS
INSTALLATION INSTRUCTIONS
VERIFACT “A” MIC INSTALLATIONS INSTRUCTIONS
Model A Microphone is designed for surface mounting to a ceiling or wall.
Microphone will pick up sounds 15’ away from all directions. For best results,
install microphone as close to desired area of coverage as possible. Avoid
mounting microphone to ceiling heights in excess of 10’, or near air vents,
refrigeration units, or other audio interferences.
NOTE: Make wiring connection on back side of micro
-
phone before installing microphone to ceiling or flat surface.
Located on back side of microphone is a terminal block marked A, B and C. A
is 12 Vdc, B is Audio, C is Ground (common)
1.
Connect as follows: RED wire to terminal A (12Vdc), BLACK wire to
terminal B (Audio), BARE wire to terminal C (Ground)
NOTE: If using wiring from other manufacturers, color code may
vary.
CONNECTIONS BETWEEN IF-4 AND VERIFACT
™
“A” ( OR OTHER AU-
DIO RECEIVING DEIVCE)
After all microphones have been connected, bring the other end of the cable to
the IF-4 location and connect each microphone to the corresponding 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 manufacturers, 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 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 Receiving 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 audio 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 Indicator.
For testing:
Select a zone that has a microphone connected to the microphone terminal
block. IF-4 utilizes pins 1-4.
Push pin to the ON position. The red LED will illuminate, indicating audio is
present. With short bursts of audio, the LED will flicker and with continuous
flow 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
CONNECTION BETWEEN IF-4 INTERFACE ADAPTER AND DVR/VCR
WITH RCA TYPE AUDIO CONNECTIONS
To make connection to DVR/VCR, plug the RCA cable (supplied) into the
RCA type audio output jack located on the output side of Model IF-4. Con
-
nect other end of RCA cable to the DVR/VCR’s “AUDIO IN” jack
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
sensitivity switch has been added to the microphone pre-amp (PC
board) and has two positions - N and L: N represents normal sensi
-
tivity (0dB output into 1K
Ω
) L represents low sensitivity (-6dB output
into 1 K
Ω
).
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™ A Microphone.
6955 VALJEAN AVE. VAN NUYS, CA 91406 PH: 818-994-6489 | FAX: 818-994-6485 | [email protected] | WWW.LOUROE.COM
