Exit Button; Soft-Function Buttons; Mute Functions; Plm Input Mute - Lab.gruppen PLM Series Operation Manual

9 FRONT PANEL INTERFACE
The current ISVPL values for output channels 1 to
4 are displayed on the right hand of the screen and
the ring surrounding the rotary encoder is illuminated
indicating that the rotary encoder is active.
3. Pressing the adjacent soft buttons to the displayed
ISVPL values selects or deselects the parameters
from the rotary encoder.
selected ISVPL value is highlighted
(inverse video)
De-selected ISVPL value is not highlighted
(standard video)
4. Select which PLM channels are to be assigned
to the rotary encoder, then turn the rotary encoder
to adjust the parameter values as required.
It is also possible to use the multi-select function to
alter multiple channel parameters even if the values
differ between each channel. Turning the rotary
encoder simply adjusts each parameter (by +/- 0.1
V in the case of the ISVPL screen).

9.9 Exit button

The EXIT key is used while navigating the menu
system in MENU mode, and takes the display back
to a previous screen ("up one level" in the menu
tree).
In METER mode, pressing the EXIT key will always
return the display to the HOME view.
30 PLM Series Operation Manual
Figure 9-4

9.10 soft-function buttons

Eight silicon rubber buttons are set adjacent to the
display in two groups of four. These buttons are
unlabelled because their functions change according
to the on-screen page currently displayed.
soft buttons
Figure 9-5
In METER mode, and with MUTE ENABLE active,
the soft buttons are used to mute and unmute the
PLM's individual Module inputs and power stage
outputs.
In MENU mode these buttons are used to navigate
the menu structure.
Each button contains a tricolor LED. This
LED conveys fault and warning indication
as well as mute statuses. The LED's
function does not necessarily correspond
to the current soft button function.

9.10.1 Mute Functions

The PLM provides mute functions at several different
points in its audio chain. See figure 8-1 (PLM Signal
Flow Diagram) for mute locations and description.
The four available mutes are:
1. PLM Input Mutes
2. Module Input Mutes
3. Module Output Mutes
4. Power Output Mutes