Synchronizing Preset Playback; Synchronized Playback Example - High End Systems studio spot User Manual

Synchronizing Preset Playback

Studio Spot provides synchronized playback for up to 32 supported
fixtures¹. Supported fixtures include the following:
• Studio Spot
• Technobeam
• Technopro
• Technoray
• future Lightwave Research products
Note: you may use a DMX splitter to connect more than 32 fixtures for
synchronized playback.
Synchronized playback is accomplished by a proprietary time code signal
generated by the master fixture and sent to the slave fixtures via DMX
cables. The time code signal is similar to SMPTE and uses a 30 frame per
second clock (non-drop frame).
The master fixture determines the total sequence length from the sum of
its delay times. When the master fixture reaches the end of its last scene,
all fixtures will restart at scene 1 and the clocks will be reset to zero.
Thus playback is not dependent on the number of programmed scenes or
the sequence length of the slave fixtures.
If the sequence length of slave fixture(s) is less than the master's, the
slave fixture(s) will repeat their sequence until the master fixture resets
the clock (slave 1 in Figure 4.2). If a slave fixture's sequence is longer
than the master's, the slave fixture will restart its sequence before it has
completed its entire sequence (slave 2 in Figure 4.2).
Scene 1 Scene 2
Master
Scene 1
Slave 1
Scene 1 Scene 2
Slave 2
¹The 32 device limit complies with the EIA-485 standard. Connecting more than 32 devices per link will
eventually deteriorate the square wave (digital signal).
Scene 3 Scene 4
Scene 2
Scene 3
Figure 4.2. Synchronized Playback Example
Scene 5 Scene 6 Scene 7 Scene 8
Scene 3 Scene 1 Scene 2
Scene 4
Chapter 4 Preset Scenes
restarts
restarts
not played
restarts
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