User guide

Set Fader Position (System Trim)

This causes the hardware to set the master system trim level to a designated value. In the case of a fire alarm, it

may be required for the show control system to interrogate the current System Trim, and set it to |-inf dB| (off). After

the fire alarm is turned off, the show control system could then restore it to its previously set value.

Recalling Cues and Subcues

Recalling Cues

Cues have a 14-bit identifier.

To recall a Cue, the following message template is used:

F0 = Start message

1F = LCS Audio manufacturers ID

7E = Matrix3 Product ID

11 = Cue List Subsystem

3F = broadcast to all LX-300s (7f broadcast no checksum)

1E = Recall Cue command.

XX = Least significant 7 bits of Cue ID

XX = Most significant 7 bits of Cue ID

XX = Calculated checksum value (use 00 if broadcast with no checksum)

F7 = End message

Note

Cues may also be recalled via Contact Closure input and MIDI Program Change messages. Consult the CueStation

4 User Manual for details. Cues are recalled within 11 milliseconds of request. CueStation user interface will be

updated to show the currently recalled Cue.

Note that the LSB and MSB must be 7 bit numbers, so the largest value possible for either LSB or MSB is 0x7f

(hexadecimal 7f). The largest possible Cue number is 0x7f 7f (decimal 16,383).

Here are some examples with the checksum calculated. (You can get CueStation to calculate the checksum for you.

Go to the Frame Control window, create a new entry of Type= Hardware Control, and Command= Raw Data. Enter

the string you want without the F0 1F 7e header or the checksum or the ending f7. Check the "Add Delimiters and

Checksum" box and look at the bottom of the window. Note that the check sum is re-calculated only when the Do

Now button is pressed, or when the check box is toggled.)

Cue Recall Examples

Recall Cue 0

Recalling Cues and Subcues