| Late addition ....
remember one little thing of importance ... the ONS (16-port analog) station card for the sx2000 (& mn3300) systems is 'only' a 24Vdc circuit. Your filter is most likely the CO version which (if I read you correctly) is meant for 48Vdc circuits. This could be a large factor in what is happening with your configuration. Not certain ... but a thought to ponder, ?maybe? |