NewTek TriCaster Advanced Edition User Guide - Manual (Page 311)

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A.8 MORE QUESTIONS AND ANSWERS
A.8.1 CAN I DO ANYTHING TO IMPROVE LATENCY/AUDIO SYNC?
Latency might be defined as the ‘transit time’ for I/v stream. Each device in the video chain introduces some
limited (transmission) delay.
TriCaster’s latency is very minimal (as little as 1 frame), but you can take measures to keep it to a minimum
– first and foremost, by genlocking your video devices – see Section 8.1.2. For genlocked sources, consider
disabling TriCaster’s Frame Sync – see Section 8.2.3.
In a seemingly related matter, note that audio and video passing through TriCaster are always synchronized.
However, aspects of the physical design for IMAG (video projection) installations can make mimic a sync
issue for viewers at some locations in the auditorium. These issues are discussed in detail in Section B.3,
IMAG and Latency.
S UPPLEMENTARY Q UESTION :
Q: Why does latency seem higher for certain video formats (i.e. 24p, 25p, or 30p)?
A: TriCaster passes frames through the switcher at the appropriate frame rate. When the session format calls
for frames at 60Hz, displayed frames are refreshed much more often than (for example) a 24p format.
Consequently, apparent latency will also be less than half what it would be at 24Hz.
In general, the lower the frame-rate of the session video format, the higher latency will seem to be.
A.8.2 WHY IS MY POWER SUPPLY BEEPING?
TriCaster 8-input systems provide redundant, replaceable power supply units. When you i) disconnect or ii)
power down just one of the modules, or iii), if a PSU should fail, a beep is sounded to alert you. If you wish,
you can mute the alert by pressing the green button on the back of the unit.
FIGURE 333 (8-INPUT TRICASTER SHOWN)
S UPPLEMENTARY Q UESTION :
Q: Where can I obtain replacement or spare Power Supply modules?
A: Contact NewTek Customer Support for information on purchasing TriCaster components.