Grass Valley PDR v.2.1 - Manual (Page 64)

Chapter 2 Using the Profile Configuration Manager
48 Profile Family
PDR200 Audio
The PDR200 audio architecture accepts and simultaneouly processes sixteen
audio inputs and outputs at up to four simultaneous clock rates. Internally, all
audio is processed in floating point at 48kHz with a selectable storage
resolution of 16 or 20 bits. Inputs may be individually clocked in groups of four,
and any clock group may be referenced to the system reference (house black)
or any one of four video inputs. Output clocking is synchronous to system
reference. Sample rate conversion is available for all inputs (30 to 50kHz),
providing uniform storage at 48kHz.
The PDR200 can be configured to operate with analog, AES/EBU digital, or
embedded (SMPTE 272M Level A) audio, depending on which options are
installed in your system. All three audio formats are supported without external
conversion equipment. Analog audio is only available with an optional
PAC208 or PAC216 Analog/Digital Interface chassis. You can expand the
number of XLR or BNC connectors for AES/EBU audio with an optional
XLR216 or BNC216 Digital Interface chassis.You can choose an audio format
for each video channel. For example, you could enable analog audio on one
channel, embedded audio on another, and AES/EBU on the rest.
NOTE: Do not turn off sample rate conversion or use AES/EBU as a
reference unless you are certain that all inputs and outputs are
synchronous.