Control Panel Operation
39
Precis LT Instruction Manual
Executing & Disconnecting Switches
A switch is an active connection between an input (source) signal and one or more output (destination)
devices. The signals routed in a switching operation are individual signals or groups of individual signals
coming through the connectors on the rear of the enclosure. You can execute switches from the
control panel using the steps below.
Switching Level
All switches are executed on a specific level. Unless otherwise specified, switches are executed using the
factory designated default level of video and audio which is associated with both Level Keys
illuminating. When using the default, you do not need to press a Level Key.
When executing a switch on a level other than the default, you must press the desired Level Key (be sure
the level includes the signals you want to route).
The Level Key for the level currently in use will illuminate when your press an Input Key or an Output
Key. The level can be changed by pressing the desired Level Key either before or after you press an
Input Key or an Output Key.
Description of Switching / Disconnecting Operations in Switch Mode
Pressing the Cancel Key puts the control panel in Switch mode, which defaults to switching both video
and audio. For information on changing the level, see “Switching Level” above.
When an Input Key is pressed first, it flashes and will be used as the source for switching. A
single Output Key can then be pressed (the key will illuminate, indicating that it is ready to
accept the switch). Pressing the Take Key instructs the system to execute or disconnect the
switch. (The Take Key does not illuminate when pressed.)
When an Output Key is pressed first, it flashes and is ready to accept an input signal. Press the
Input Key, which illuminates. Press the Take Key to complete the switch.
Additional switches and disconnects can be executed while in Switch mode.
Executing Switches
When executing switches, the flashing key is the “hot” Input or Output Key, all other commands center
around that key until you change mode (press the Cancel Key), level, or select a different Input or Output
Key (must be the same type of key as the “hot’ key).
Be sure to read the information on “Switching Level” above.
You can return to the Switch mode at any time by pressing the Cancel Key. Pressing the Cancel Key does
not cancel any completed operations.
To execute a switch selecting input (source) first:
1.
Press the Cancel Key.
All the lights on the control panel turn off.
The control panel is in Switch mode.
2. Press a Level Key to select a level (can be omitted when switching on the default level).
The Level Key illuminates.
3. Press an Input Key to select an input.
The Input Key flashes, and after a moment any Output Key(s) to which that signal is already routed
illuminates.
4. Press an Output Key(s) that is not illuminated to select an output(s).
The selected key illuminates, indicating that it is ready to accept the signal from the input.
5. Press the Take Key.
All the illuminated keys turn off as the switch is executed.
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