eriksen
Junior Member level 1
Hi,
We have an automotive product using a switching power supply(10V-32V) as the power source. We passed the EMC conducted emissions tests fine.
However we had to add some capacitance to the input to avoid a scenario where the PS would burn if it got a voltage spike 40V+, and we are unsure how this might affect our EMC performance.
We would rather not spend lots of money on new tests from a test house and want to buy a DSA815-TG with EMI addon so we can do our own tests.
The question here is; do we need a LISN as well? Or can we measure passively on the power lines directly with the analyzer?
Any suggestions for either a cheap LISN or a good-enough diy way of measuring if it's not possible to measure directly?
We have also gotten some indications that we have conducted noise in the 300MHz range, DAB+ interference which was solved with moving the antenna away.
So we want to measure from KHz range to at least 300Mhz.
Any input here would be greatly appreciated.
Thanks.
EDIT: Wrong forum category, don't know how I managed to do it... Can I change this myself?
We have an automotive product using a switching power supply(10V-32V) as the power source. We passed the EMC conducted emissions tests fine.
However we had to add some capacitance to the input to avoid a scenario where the PS would burn if it got a voltage spike 40V+, and we are unsure how this might affect our EMC performance.
We would rather not spend lots of money on new tests from a test house and want to buy a DSA815-TG with EMI addon so we can do our own tests.
The question here is; do we need a LISN as well? Or can we measure passively on the power lines directly with the analyzer?
Any suggestions for either a cheap LISN or a good-enough diy way of measuring if it's not possible to measure directly?
We have also gotten some indications that we have conducted noise in the 300MHz range, DAB+ interference which was solved with moving the antenna away.
So we want to measure from KHz range to at least 300Mhz.
Any input here would be greatly appreciated.
Thanks.
EDIT: Wrong forum category, don't know how I managed to do it... Can I change this myself?
Last edited: