>immune to the PC's internal noise. But it all goes to proper design. The >Antex SX series of cards likewise contain internal A/D converters. I have >measured the noise figures of the Antex SX-36 we have at WGCR using state of >the art audio systems analyzers, and the noise floor is below the LSB >threshold. All due to balanced I/O, sound PC layout techniques, and top of >the line components.
Just FYI, RME make all the same claims on their website about their 8 channel analog "daughterboards" for the Hammerfall. >In a high RF environment, unless the converters are optically isolated from >the PC, you might be asking for trouble. When I say 'high RF' I'm talking >10KW of AM transmitter fifteen feet away, with a measured RF field intensity >of 105V/m (the ANSI exposure limit is around 645V/m). This means a one meter >piece of wire that isn't properly grounded can develop 105V of RF energy. I >have suffered RF burns of appreciable intensity touching wires that weren't >connected to anything on either end -- they were just oriented along the >field gradient. Just Say Fibre Optics :) Who needs AES or MADI when you've got ADAT? :) --p
