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

High Voltage Spike Filter Box. Voice Recording Spike Filter.

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Application

Spike filter will reduce harmful high energy noise spikes in cabling systems from interference from external sources, e.g. switching of traction current in Railway networks.

Will help to reduce false calls when Voice Recording.




Features
4 or 8 channel versions.

Screw terminal input to allow connection to any type of wire e.g. stranded or solid.

RJ11 output connectors configured to match inputs on recording equipment.

Transparent to speech.

Signal level limited to prevent over load by low voltage Schottky diodes.

Standard 19 rack mounted.

. RoHS Compliant.

Benefits
Reduction of large voltage spikes.

. DC blocking and low frequency attenuation to
reduce subsonic effects.

. Spike and high frequency attenuation with
passive CR networks.

. Final filter and DC blocking stage on
outputs to recording equipment.

Low cost solution.

. Robust rack mounting or desktop steel
enclosure 165mm x 88mm x 29mm

Electrical

BARRIER
Lightning and fault condition protection by
Gas discharge tubes on all channels (90v).

. TRANSFORMER
Full isolation from the telephone
lines via BABT approved
transformers.
Etal P1200 barrier transformer
Approved to EN 60950 and EN41003
BABT Certificate of Recognition
CSA / NRTL Certified to CSA C22.2
No 950 - 95 / UL 1950
Freq Response 200Hz - 4 kHz
Isolation 50 Hz > 3.88 kVrms
Balance DC - 5 kHz > 80dB
 
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