Hi All,
I'm looking for some help eliminating noise from a DAC (Digital to analog converter). The unit is being used in a cinema to decode audio for blind people. One channel of audio is coming from this device and the second channel is coming from our audio processor.
When they are both connected, I am getting noise in one channel and attenuation in the next. I can stop the noise by powering the DAC by battery (5v) and grounding the DC- to the sound processor chassis. I think this means that I have a DC offset problem? Using batteries isn't a long term solution, just a means to determine what the problem is. The power supply that is supplied is an SMPS.
Any suggestions?
Thanks,
Cathal
I'm looking for some help eliminating noise from a DAC (Digital to analog converter). The unit is being used in a cinema to decode audio for blind people. One channel of audio is coming from this device and the second channel is coming from our audio processor.
When they are both connected, I am getting noise in one channel and attenuation in the next. I can stop the noise by powering the DAC by battery (5v) and grounding the DC- to the sound processor chassis. I think this means that I have a DC offset problem? Using batteries isn't a long term solution, just a means to determine what the problem is. The power supply that is supplied is an SMPS.
Any suggestions?
Thanks,
Cathal