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PCMT MKII

PCMT MK II – MODEL FP 4409A

Description

 

The transformer is designed as a high voltage isolation barrier for data transmission systems passing through hazardous voltage areas.

The product is similar to the PCM Isolation Transformer PCMT (designed for 64K / 2Mbit/s data systems) in that it provides high voltage isolation to 20kV rms but with considerable improvement to the low frequency response. This model is now also applicable to MODEM transmission systems where lower frequency loss figures are of concern.

The transformer is of potted construction and although the overall dimensions are larger to accommodate the changes in internal components, the fixing positions have been maintained to the centres of the PCMT transformer.

Specifications

 

Input and Output Impedance:

Nominally 120 Ohms 

 

Input Inductance:

With primary or secondary pair windings in series – 33mH minimum

 

Rise Time (loaded pulse response):

Measured between 10% and 90% levels – Not more than 30nS

 

Insertion Loss:

Less than 3.5dB at 300Hz

Less than 0.8dB at 200KHz

 

Insulation:

Leakage less than 10µA at 25kV D.C.

 

 

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