The Clear-Com Encore IF4W4 4-channel four-wire interface is a modular interface that enables up to 4 four-wire communication systems (such as cameras, TELCO lines and 2-way radio) to interface with the Clear-Com intercom system. It matches standard transmit/receive lines (at normal levels) to Clear-Com line level.
The IF4W4 is powered by the Clear-Com line using standard two-conductor shielded mic cable. The cable is run from the output connector of a Clear-Com main or remote station to the rear panel of the IF4W4. One wire carries power, the other wire carries the intercom signal, and the shield acts as common ground.
For each channel the IF4W4 front panel contains ‘Out’ (transmit), ‘In’ (receive), ‘Null’ level controls and level indicators. For all channels a test jack and a four-pin headset XLR connector that connects to built-in test oscillators is provided to set and monitor the circuit nulling of each channel. Press the Null Test pushbutton for the channel you need to adjust.
The ‘Link’ switches enable you to assign each of the four-wire systems to separate intercom channels, or put two, three, or all four systems on one party line.
The IF4W4 rear panel provides four three-pin XLR connectors for interfacing up to four different Clear-Com lines, as well as four terminal block connections for four-wire input and output. The interface mounts in a standard 19 in. (48.64cm) equipment rack and is 1.75 in. (4.48 cm) in height.
Features
- 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
- Powered by the intercom line
Specifications
| Program Line Input Impedance | >= 1KΩ |
| Partyline Output Impedance | >10KΩ |
| Stage Announce/Balanced Line Out | Type: Balanced
Output Impedance: >= 80Ω
Load Impedance >= 600Ω |
| Program Input - Partyline Frequency Response | 200 - 18KHz ± 3dB |
| Partyline - Line Out Frequency Response | 200 - 18KHz ± 3dB |
| Program Input Partyline Max Distortion | <= 0.2% |
| Line Out Partyline Max Distortion | <= 0.5% |
| Program Input Partyline Noise | < -85dBu |
| Partyline Line Out Noise | < -60dBu |
| Program Input Partyline Max Gain | >= -16dB |
| Partyline Line Out Max Gain | >= 24dB |
| Program Input Partyline Min Gain | <= -20dB |
| Partyline Line Out Min Gain | <= -45dB |
| Line Out LED Threshold | Green: 7dBu ± 2dB
Red: +5dBu ± 2dB |
| Partyline LED Threshold | Green: -10dBu ± 2dB
Red: 0dBu ± 2dB |
| Power Input Voltage | 20-30VDC |
| Power Input Current | Idle: <= 40mA
Max: <= 50mA |
| Rear Panel Connectors | Intercom: (4) XLR-3F (1 per channel)
4-Wire Terminal Block Connectors: (4) Connectors (1 per channel)
4-Wire Transmit Level Switches: (4) Switches (1 per channel) |
| Front Panel Connectors | Headset: (1) XLR-4M
TS1 Earphone: (1) 3.5mm Jack Socket |
| Front Panel Controls & Indicators | Green Level LED: (4) LEDs (1 per channel)
Red Level LED: (4) LEDs (1 per channel)
Link LED: (4) LEDs (1 per channel)
Power LED: (4) LEDs (1 per channel)
Null Test Button: (4) Buttons (1 per channel)
Receive Level Adjust: (4) In controls (1 per channel)
Transmit Level Adjust: (4) Out controls (1 per channel)
Nulling Adjust: (12) Null controls (3 per channel)
Channel Link Switch: (3) Link switches (A+B, A+C, A+D) |
| Environmental | 0 - 50°C (32 - 122°F) |
| Dimensions | 483 mm W x 44.5 mm H x 197 mm D (19 in. W x 1.75 in. H x 7.75 in. D) |
| Weight | 2.65 Kg (5.83 lbs.) |
