| The
2470 Broadcast Time Delay can be programmed to create any delay time from
20 seconds to 36 hours. The delay is set in day/hours/minutes/seconds/frames
through a graphic user interface. Unlike many servers, 360 Systems’
2470 Time Delay will maintain single-frame accuracy over an indefinite
period of time when connected to a genlock source. It operates as a set-and-forget
box, and requires no user intervention. All settings are non volatile,
and are automatically recalled each time power is applied.
For Europe, Active Format Description (AFD) data is also stored; specify Europe when ordering. Unlike many other time delays, 360 Systems’ Model 2470 does not use MPEG-2 coding on VBI data; instead, it is extracted, delayed, and then re-inserted on playback.
To achieve the highest image quality without motion artifacts, video is
MPEG-2 encoded in 4:2:2 Profile, Main Level, at a fixed rate of 30 Mb/sec
(I-frame). Inputs and outputs are provided for both SDI and Composite
video.
The Time Delay accepts four audio channels (two stereo pairs) in AES/EBU
format, or as embedded audio within an SDI stream. Alternatively, it accepts
two channels of +4 dBu balanced analog audio. XLR-3 connectors are provided
for audio I/O. 360 Systems’ Bit-for-Bit® data handling ensures
correct playback of data for Dolby-E and Dolby AC-3 data streams.
The Time Delay also captures most commonly used VBI lines including VITC,
closed captions, and AMOL (Nielson) data. Time delays can be set to single-frame
precision, and because a genlocked reference is used, timing remains frame-accurate
over an indefinite period of time. When several units are fed identical
input signals, they remain in sync.
Because broadcast delays transport high-value program material, 360 Systems’
design includes a RAID-5 disk array to enhance reliability in the event
of drive failure. Power consumption is low, and forced-air cooling extends
component life and enhances reliability.
|
