Graham-Patten Systems make the highest quality audio impedance converters on the market today. I’ve heard people say, “So what? It’s only a simple balun impedance converting transformer.”
Okay, but the design of the transformer is critical to maintaining balance, impedance, and bandwidth. Failure or poor performance in any of these parameters will without doubt cause poor performance through the digital audio path, especially where multiple impedance conversion has been necessary through a longer than normal or tortuous signal path.
We should also remember that when converting from 110/75Ω we have AES in at 2-7Vpp and AES3id out at 1Vpp. It is essential that the proper attenuation be built into the converter to ensure that there is no over voltage at the output of the device. This allows us to use normal video 75Ω distribution techniques and equipment for the distribution of digital audio signals.
So what’s so clever about the Graham-Patten DATS converters? Simply put, it’s the size of the units, and the critical design of the balun transformer. The Graham-Patten DATS are the only converters built using standard XLR shells mated with standard, high quality BNC connectors. I should also have mentioned that they are rugged, too! The balun transformer is designed to meet very precise parameters for this specific application.
In order to help keep installations neat and tidy, we also offer the Graham-Patten DATS panels. These are 19” rack mount panels to which up to eight DATS of any gender can be mounted or even inter-mixed on custom jobs. We also added a cable tie bar at the back of the panel. However, what is slick is that the panel itself is punched out of FR4 material – thus it is insulated from ground ensuring that ground is carried through the DATS converters only.