Grass Valley PROFILE FAMILY v.2.5 - Manual (Page 77)

PDR100 Audio
Profile Family 77
PDR100 Audio
The PDR100 supports both analog and serial digital embedded (625 only)
audio inputs and outputs, depending on which boards are installed your the
PDR 100 system. Audio in the PDR100 is routed using the EISA bus with data
flow controlled by a real time controller and the audio interface card.
The analog audio card is capable of converting four channels of analog audio to
digital audio (and vice versa) using 16-bit/48kHz conversion. The input and
output data flow to the card via the EISA bus, with sample clocks coming from
a video interface card, such as the analog composite board or the SDI board.
However, the analog audio card can only have one clock operating at a time. If
the card is used as an input device, it must have the clock that originates on the
video board associated with the audio.