Digital Telephone Voice Recording Interfaces
Analogue Audio/Telephone Recording Interfaces
Covert Audio/Video Security System
Audio System / Dealer Board Interface Analogue Telephone Signalling Converters

4 Wire E&M to 2 Wire Loop/Gen Converter (Figure 5/10 to figure 6) Signalling Converter

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• Connection of 2 wires Loop/Gen lines to any 4 Wire E+M Circuit or Equipment.

• E&M signalling indication.

• Transmit and receive speech indication.

• Line balance adjustable to match line impedance.

• Transmit and receive amplifiers (gain adjustable -60 to +8 dBm).

• False ring back eradication.

• 2 channels per card.

• Standard 19” rack mounted.

• 20 channels per shelf.

• Easy krone connection on PCB backplane.
• Superb sound quality.

• A common problem with these types of converters is false ring back from the called end. ACL’s technology totally prevents this.

• Compact.

• Good Tran hybrid loss (45 dB).

• More racking density than other products on sale.

• Low power consumption (24V/48V).

Hybrid transformer:
BABT certificate of recognition CR0140.
Trans-hybrid loss 300 Hz-3.4KHz.
Frequency response +/-0.2dB, 200Hz-4kHz
Return loss >19dB, 300Hz-3.4kHz
50Hz isolation voltage >3.88kV RMS
Saturation voltage 65V peak
DC-5kHz balance > 30dB
4w to 2w hybrid
E&M type 1B, V, DC5, others to special order
50V DC output on 2 wire / 80V AC Ringing
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