https://www.systerra.de/APC730.html
16D/32SE 16-bit A/D analog input channels, 8 16-bit D/A analog output channels, 16 TTL bidirectional digital inputs/outputs, and one 32-bit counter/timer ...
PCI4400 Manual (PDF)
https://www.systerra.de/downloads.php?dokument=6571
PCI4520 Manual (PDF)
https://www.systerra.de/downloads.php?dokument=6573