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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.

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?

SymNet Remote Terminal is a UDP terminal test application for testing Ethernet-based control for Symetrix products.

SymNet Remote Terminal.zip

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.