Louroe Electronics ASK-4 304 - Manual (Page 2)

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
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:
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 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.
INSTALLATION AND OPERATING INSTRUCTIONS
Page 2 of 4
LOUROE ELECTRONICS 6 9 5 5 VA L J E A N AVENUE, VAN NUYS, CA 91406 TEL (818) 994-6498 FAX 994-6458
website: www.louroe.com e-mail: [email protected]
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