Electronic Theatre Controls Emphasis Lighting Control System Especificações descarregar pdf (Página 312)

298 Chapter 24 Control interfaces

External time code clock

When running a real time program with an external clock, the event list

pointer jumps to agree with the frame of the external clock. Sometimes

the timing signal is not yet present even though the external clock is

enabled, causing a delay in the execution of the program. When that

happens, you will see a Waiting for input message at the upper left

corner of the Time Code Events display. When the external signal begins,

the message disappears and the TimeCd value begins to run.

118

You can lose events on the first pass through the program if the external

signal starts before the program is ready.

119

That happens because the

event list pointer moves with the external signal and has already passed

the code time of one or more events. These missed events, however, will

be played in subsequent passes through the program.

Enable an external clock with the procedure below. Note that the

procedure also enables the console’s internal clock, which can then

provide backup if the external clock signal fails. The order in which these

two clocks is enabled is important. Also note that it takes at least five

seconds for the external and internal clocks to come into synchronization,

so any events during that initial synchronization period could be missed.

118.

You can verify which clock is running the program by the color of the

Timecd

number in the upper left corner. A red number means the internal clock is running

the program; a green number means that the external clock is running the

program.

119.

Losing events on the first pass can also happen if you edit a program that is

running at the same time. To avoid that, see Re-setting the event list pointer, page

290.

Keystrokes:

Actions:

1. Press [Setup].

Selects Setup display

2. Press [6], Options

Settings, and press

[Enter].

Selects Options Settings menu

3. Press [5], Time Code

Input, [Enter].

Prompt reads:

Enable/disable external time code

input

0=Disable, 1 = Enable MIDI Time

Code (MTC)

4. Press [1] [Enter].

Enables the external MIDI time code

clock

5. Press [S8], Return.

Returns to the Setup display

6. Press [1][3] [Enter].

Selects the Time Code Events option

7. Press [S2], Enable Clock.

Enables the internal time code clock

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