This is an eight channel digital I/O card for the TDIF-1 format.
8ch TDIF Input/Output Card
8 x TDIF 24 bit format inputs and outputs on 25-pin D-sub connector
Interface for DM1000, 01V, PM1D, DME32, AW4416, AW2816, SREV1, DM2000 and 02R96