296 Eos Operations Manual
About Show Control
The Eos Show Control system is made up of MIDI Show Control, Serial (RS-232), Time Code (MIDI
or SMPTE), Analog Inputs and Relay Outputs, and Real Time Clock (RTC).
MIDI Show Control and Serial require minimal setup from Eos and will be discussed at the end of
this chapter. Time Code, Analog Inputs, and RTC require the use of the Show Control Display,
which is accessed by pressing [Displays]>{Record Target Lists}>{Show Control Display}. The
Show Control Display allows for the creation of event lists.
Setup
Eos provides user-definable settings for show control which can be accessed by pressing
[Displays]>{Setup}>{Show}>{Show Control}. For more information, see Show Control, page 96.
Events
An event consists of a time or address, and an action. An event plays back (or “fires”) when the
clock reaches or passes the specified event time, or an input is seen on an address. Multiple events
can be fired at the same time.
Eos supports three event actions: run a cue, control a submaster, and fire a macro. Cues can be
run from any cue list and will play on their assigned fader. Submasters can be bumped, turned on,
or turned off. Submasters do not have to be assigned to a fader. Macros execute without interaction
with the command line. If another macro is fired before the first macro completes, the first macro will
finish its action before the second is started.
Internal vs. External Time
The Eos Show Control system makes use of two timing sources, internal and external. The different
protocols use internal and external clocks in different ways.
Time Code (MIDI or SMPTE) normally requires timing information from an input source, like a show
control gateway. This timing source is referred to as external time, since it is coming from a source
external to Eos.
If the external time source stops for any reason, each Time Code event list within Eos has an
internal timing source which will assume control, if enabled. This internal timing source requires
three pieces of information to determine how to generate its timing: first time, last time, and frame
rate.
When the internal clock reaches the last time, it will reset to the first time and continues running.
Although external timing may run faster or slower than real time, the internal clock runs only at real
time.
Analog uses external time only.
Real Time Clock uses internal time only. Since that timing information doesn't come to Eos from an
external source, it is important that all the correct information for time zone, latitude, and longitude
are properly setup in the Eos Configuration Utility.
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