Grass Valley Turbo iDDR v.2.3 - Manual (Page 23)

Turbo iDDR User Guide 23
Functional description
Functional description
The diagram illustrates how the three iDDR channels operate independently, but
share a common internal disk storage area. This gives all channels, one record channel
and two play channels, simultaneous random access to the same media files. This
means that you can play a clip that is still recording on the record channel. Each
channel handles one video track, two audio tracks, and one timecode track.
About E-to-E mode
Note that an E-to-E path is provided for monitoring purposes. In E-to-E mode, the
record channel audio and video inputs are switched to the play channel audio and
video outputs when the play channel is in stop mode or when no clip is loaded. This
allows you to monitor the record channel inputs while recording. The following table
describes play channel operation depending on the E-to-E selection.
E-to-E Setting Play channel mode Play channel output
E-to-E Disabled Play, FF, Rewind Show clip
Stop Show clip
Eject Show black
E-to-E Enabled Play, FF, Rewind Show clip
Stop Show input a.
a.
Output is black if no video input is connected to R1. DVI-I output
does not support E-to-E.
Eject Show input
a..
EE Switch Path to P1
EE Switch Path to P2
R1
Input
Circuit
P2
Output
Circuit
P1
Output
Circuit
R1
Record
Channel 1
P1
Play
Channel 1
P2
Play
Channel 2
Disk Storage
(SATA)