Grass Valley M-Series iVDR Service Manual - Manual (Page 16)

16 M-Series Service Manual 6 July 2004
Chapter 1 Product Description
Functional description
The diagram illustrates how the four iVDR channels operate independently, but share
a common internal disk storage area. This gives all channels, two record channels for
recording media and two play channels for playing media, simultaneous random
access to the same media files. This means that you can play a clip that is still
recording on one of the record channels. Each channel handles one video track, two
audio tracks, and one timecode track.
Note that an E to E playback path is provided for monitoring purposes. The E to E
path allows the play channel output to switch to the record channel input when the
play channel is in stop mode or not asset is loaded on the channel. You can configure
the iVDR so that the play channel does not use E to E, but instead freezes on the last
frame when the play channel is in stop mode.
NOTE: E to E is provided for monitoring the record channel, and is not intended
as a program switch.
PB/EE Switch Path
R1
Input
Circuit
R2
Input
Circuit
P2
Output
Circuit
P1
Output
Circuit
R1
Record
Channel 1
R2
Record
Channel 2
P1
Play
Channel 1
P2
Play
Channel 2
PB/EE Switch Path