Dear Lawler,
Isolation transformer is recommended by the LISN manufacturer. LISN is
an integral part of the EMI receiver (PMM7000) used for precompliance testing.
Without an isolation transformer in the LISN input the circuit breaker which
controls the power input to the LISN gets tripped. But when an isolation
transformer is introduced the floor level noise (without connecting any DUT
for test) goes upto 40 dB (in the frequency range of 150 to 200 KHz).
Sincerely
K.Balasubramanian
Sr.Engineer, Hardware.
[email protected]
Sent by: [email protected]
05/09/2004 09:47 AM
Please respond to pat.lawler
To: [email protected]
cc:
Subject: Re: Isolation Transformer at the LISN input
What standard are you using, and where do you see an isolation transformer
requirement?
On Thu, 6 May 2004 17:26:43 +0530, [email protected] wrote:
>Apart from the power rating, what are the other requirements
>(specifications) for the isolation transformer that is to be used in the
>power input to a LISN that is used for testing the conducted emission.
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