28 Hog 4 Operations Manual
Fixture: A B C
Cue 1 100 50 100
Cue 2 100 25 50
Cue 3 100 75 75
With a non-tracking console, each value would have to be recorded into each cue as
displayed above. However, with a tracking console such as the Hog 4, the only data that
really needs to be recorded is much simpler as shown in the table below:
Fixture: A B C
Cue 1 100 50 100
Cue 2 25 50
Cue 3 75 75
As you can see fixture A only has to be recorded at 100% in cue 1 because that value will
track all the way from cue 1 to cue 3. On the other hand, since fixtures B and C change value
in each cue, the tracking console needs to have unique values recorded in each cue.
When discussing the contents of a cue or the state of playback on stage, the following terms
are commonly used:
Hard Values / Touched Values: Values programmed into the current cue
Tracked Values / Transparent Values: Values assigned
State: The summation of both tracked and hard-coded values in playback. The Hog 4
OS automatically recalls the state of any cue regardless of whether or not the cuelist
was played in order; this allows the console operator to jump around and play cues out
of order while preserving the way the cue was meant to look.
2.5 HTP and LTP
Traditional theater desks that are not designed to handle moving lights will work on a Highest
Takes Precedence (HTP) basis. This means that if a fixture's intensity is being controlled by
two different parts of the console, such as a playback and a sub-master, the intensity will be
at the highest of the two levels. For example, if in the playback fixture 1 is at 50%, and in the
sub-master it is at 100%, then the level seen on stage will be 100%. If the sub-master is
reduced to 40%, then the on-stage level will be 50%, because the level in the playback is
higher and will take precedence.
This system generally works well for non-moving light consoles, but moving lights introduce a
problem. Parameters other than intensity don't have ‘higher’ and ‘lower’ values: a colour of
red is not higher or lower than green, and a pan of 50% is not higher or lower than one of 20%.
Working with moving lights needs a new way to decide the precedence, called Latest Takes
Precedence (LTP).
With this system, the fixture parameters are at the value they have been most recently
assigned. In our example, moving the sub-master to 40% would result in a level of 40%,
because this is the latest instruction and will take precedence. The sub-master would
effectively ‘grab’ control of the parameter from the playback. Of course, running another cue
in the playback might grab it back again.
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