IF4W4

IF4W4

4-Channel 4-Wire to Partyline Interface

Interfaces TV cameras, 2-way radios, fiber circuits and other 4-wire devices to Clear-Com partyline

Individual Transmit Receive and Null controls

Transmit output switchable between mic and line level

Built-in test jack and oscillator for quick nulling

Selective partyline capability

Accepts balanced or unbalanced 4-wire input

Transformer isolated

Terminal block and XLR connectors for each interface

Technical Specifications

Program Line Input

Input Impedance : >= 1K

Partyline Output

Output Impedance: >10K

Stage Announce/Balanced Line Out

Type: Balanced

Output Impedance: >= 80

Load Impedance: >= 600

Frequency Response

Program Input – Partyline: 200 – 18KHz ± 3dB

Partyline – Line Out: 200 – 18KHz ± 3dB

Max Distortion

Program Input – Partyline: <= 0.2%

Partyline – Line Out: <= 0.5%

Noise

Program Input – Partyline: < -85dBu

Partyline – Line Out: < -60dBu

Max Gain

Program Input – Partyline: >= -16dB

Partyline – Line Out: >= 24dB

Min Gain

Program Input – Partyline: <= -20dB

Partyline – Line Out: <= -45dB

Line Out LED Threshold

Green: -7dBu ± 2dB

Red: +5dBu ± 2dB

Partyline LED Threshold

Green: -10dBu ± 2dB

Red: 0dBu ± 2dB

Power

Input Voltage Range: 20-30 VDC

Input Current (Idle):<= 40mA

Input Current (Max):<= 50mA

Environmental

32 – 122°F (0 – 50°C)

Dimensions

1.75 x 19 x 7.75 in (HxWxD)

(44 x 483 x 197 mm)

Weight

5.8 lbs (2.7 kg)

Features and/or Benefits

Optimizes Operating Parameters

Front panel controls allows quick adjustments to parameters for each interface module, optimizing the interface between the 4-wire device and the partyline.

Transmit and Receive Signal Hybrid

The terminal block provides a pair of connections for both transmit and receive signals with the XLR-3M connector providing the link between the interface and the Clear-Com intercom line. The test jack on the front panel has a built-in oscillator to quickly null the transmit/receive hybrid.

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