The Tech Works ICA-202D is the most versatile Audio Intercom available; yet it is also the easiest to integrate into your design. With 20 watts of clean audio power at 25-Volts it can do both the Intercom and the Paging functions in most facilities. The audio quality of the ICA-202D is superb. Noise and distortion are very low. Selectable equalization optimizes voice communications.
There are separate controls for Audio Level, and Reach. Once set, Automatic Level Control (ALC) assures the speaker level remains constant over a wide dynamic input range. The Remote user may wander throughout the room and still be heard at a nearly constant level without any operator adjustments.
All configuration settings are factory presets; only the speaker levels are set in the field. The microphone sensitivity (Reach) is preset with 16 position (3dB/Step) switches; the Speaker Levels are adjusted with Back Panel Controls. External Control allows the Operator to listen to very low sounds or soft speech from the remote station. The Remote Microphone Sensitivity (Reach) is fully controllable; set by a Front Panel Control, and/or Console Push Buttons, or PLC Touch Screen. ALC keeps the Speaker and Recording levels from exceeding preset levels.
A Privacy Tone, to alert the remote party that someone is listening, is a control option. If selected the privacy tone will sound every 20 seconds unless the PTT is pressed. Electronic switching takes less than 3mS. Audio Switching Delay is adjustable to eliminate the reverberation in difficult “hard acoustic” places like holding cells.
The logic interface is PLC compatible including stepped external “Level Control”. Input control options include Privacy Tone, Page, PTT, Mute, Activate, Shut Off, and Call Tone, which is automatically routed to the operator speaker. A Line level output for recording is included. A separate Page line level output provides audio to paging amplifiers if required. A Page Pre-Announce Tone (jumper option) is available.
Dual Channel Universal Audio Intercom Amplifier
Inputs: R.F. and static electricity protected
Outputs: short circuit protected
Frequency Response: 250 Hz to 10KHz
Remote Speaker Output:
Balanced 20-Watts RMS
Into 25 Volt transformer loads
Operator Speaker Output: 3 Watts into 25 Volt speaker
Distortion at Full Rated Output < 1% T.H.D
1000 Ohms Balanced
-80dBm minimum input for full rated output
Selectable Equalization optimized for voice communication
Phantom Power: 15 Volts
Color: Light Gray metal enclosure
Power: 24VDC, 2A Power Supply (sold separately)
Weight: 3 lbs.
Dimensions: 8.5” W X 1.75” H X 6” D
Mounting: Desk Mount (DM), Rack Mount (RM), Dual Rack Mount (RM2), and Wall Mount (WM)
Connections: Euro-Style Pluggable Screw Terminals