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Knowledge Base > Accessories > I/O Expansion Cards > 4 Channel Digital Input Card
Does the 4 Channel Digital Input Card have sample rate conversion?
Yes, it will accept any rate from 12 kHz to 96 khz and covert it to 48 khz.
Does the 4 Channel Digital Input Card have an impedance matching transformer?
Yes, it matches 110 Ohm for AES and 75 Ohm for SPDIF respectively.
Where can I find AutoCAD files for EDGE and the Symetrix audio I/O cards?
The 4 Channel Digital Input Card support AES and SPDIF. How does it handle the different impedance of the two formats?
There is an impedance matching transformer on the 4 Channel Digital Input Card to switch between 110Ohm and 75Ohm.
Why is there no word clock input on the 4 Channel Digital Input Card?
Word clock is embedded into both AES/EBU spdif, so no word clock input is needed.
What if I order an Edge or Radius AEC Frame but do not fill up the card slots?
Filler panels will reside in the empty slots.
Where can I find an Ethernet application with IP capable Symetrix products?
Why is there no word clock input on the SymNet 4 Channel Digital Input Card?
In both AES/EBU and SPDIF the word clock is embedded into the digital audio, so the digital input card will synch to the sample rate of the incoming signal.