Tendzone TYCHO T 1212/CA - Manual (Page 17)

If Scene 8 is loaded on the scene management interface, PIN-11 (i.e. RO 8) will output 0, and remain the same before
other scenes are loaded, at which time PIN-11 (i.e. RO 8) will output 1;
(2)
The specific settings are as follows if Level Display is selected:
When it works,
As the level of input channel 1 of the audio matrix reaches -28 dB, PIN-11 (i.e. RO 8) will output 0, and remain the same
before the level decreases, at which time PIN-11 will output 1.
(3)
The specific settings are as follows if Mute Display is selected:
When it works,
As the input channel 3 of the matrix is muted, PIN-11 (i.e. RO 8) outputs 1 and remains the same before the input channel
3 is not muted, at which time PIN-11 outputs 0.
(4)
The specific settings are as follows if System Mute Display is selected: