8 NEBULA OPERATION
DIMMER SETTINGS PRIORITY
The dimmer settings described above are processed in a fixed priority. Levels are processed and passed to the dimmers in
the following order of increasing priority:
1/
The DMX control level (or the Fail DMX control level) and the Scenes or Preset levels (if fitted) for that dimmer are mixed
on an HTP (Highest Takes Precedence) basis.
2/
If the Test/Set level for the dimmer is set between Off and Full (or flashed), the Test/Set level replaces the dimmer level.
If no Test level is set for that dimmer, no change is made. All Test/Set levels are disabled by the Reset command.
3/
If the control level is below the Off Level set for that dimmer, the control level is set zero. If the control level is above the
Off Level, no change is made. All Off Levels are set zero by the Reset command.
4/
If the dimmer curve is set to Non-Dim, the control level will be switched to Full if over the Non-Dim level, and switched off
if under. The Non-Dim level may be set anywhere between 10% and 90%. All Non-Dim levels are set zero by the Reset
command.
5/
If the Minimum setting for the dimmer is set above 0%, the dimmer level cannot be lower than that level. If the Minimum
setting is 0% for that dimmer, no change is made to the level. All Minimum levels are set zero by the Reset command.
6/
If the Maximum setting for the dimmer is set below 100%, the dimmer level cannot be higher than that level. If the
Maximum setting is Full for that dimmer, no change is made. Giving Minimum and Maximum a higher priority than Non-Dim
permits switching between any two voltages to suit the application. All Maximum levels are set Full by the Reset command.
Note that the normal Incandescent curve is used to define any Minimum or Maximum voltage limits imposed on dimmers
selected to Non-Dim.
7/
If the Proportional Level for the dimmer is set lower than 100%, the control level for that dimmer is multiplied by the
Proportional level If the Proportional Level for the dimmer is set to 100% (F), no change is made. All Proportional levels are
set to 100% (F) by the Reset command.
8/
Finally, the fade up rate of the resulting level is limited by the Softstart Time programmed for the dimmer channel. If the
Softstart time is set to zero for that dimmer, no change is made to the fade up rate. The Softstart time applies only to the Up
fade rate—it does not affect the Down fade rate of the control level applied to any dimmer. All Softstart times are set to
300msec by the Reset command.
9/
The phase On time for each dimmer is then calculated from the final dimmer level according to the Dimmer Curve
programmed for that dimmer. All dimmer curves are set to Incandescent by the Reset command.
Summary of Contents for NEBULA
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