Lab.gruppen PLM 20000Q - Manual (Page 59)

Front Panel Interface
53
PLM Series Operation Manual rev 1.2.3
Only one analog input is allowed in each router, and
the analog input must be at the lowest priority level
in relation to any other inputs.
Two modes of input selection are available, Auto Select and Forced Selection. The selected setting is also
visible from the I/O STATUS screen on the front panel, and via the Lake Controller.
In Auto Select mode, Priority 1 is checked for a valid input signal; if no signal is found, Priority 2 is checked,
and so on until a valid signal is located; this process occurs if the currently selected input fails. In Forced
Selection mode, one of the four priorities is fixed regardless of whether a valid signal is present.
With a router selected on the front panel, press the middle button on the left of the LCD to activate this
parameter for editing; the text will be highlighted as shown in Figure 7-13. Use the illuminated rotary
encoder to scroll through the following options:
▸ Auto Select (default)
▸ Force Priority 1
▸ Force Priority 2
▸ Force Priority 3
▸ Force Priority 4
Assignment of Input Priority
Factory default settings assign AES3 to Priority 1 and Analog to Priority 4, with Priority 2 and 3 empty.
To change these settings via the front panel, select Priority slot number to be changed and use the rotary
encoder to scroll through the available options. Due to the signal hierarchy it is not possible to assign an
analog source to a higher priority than a digital source.
Analog Input Sensitivity and Digital Gain Offset
Press a dynamic function to the right of the LCD to toggle the selection of input source and input sensitivity/
digital gain offset then use the rotary encoder to change the parameter.
The maximum input level accepted by the analog input pre-amplifiers without clipping may be set to 12 dBu
or 26 dBu. Digital gain offset may be applied to AES3 digital input signals in 0.1 dB increments from -100 dB
to +15 dB.