Plm Series Features; Front Panel Overview - Lab.gruppen PLM Series Operation Manual

6.1 Front Panel Overview

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The front panel controls, clustered around a 2.5"
daylight readable LCD, perform most control and
monitoring functions via a simple menu system. The
two switch clusters on either side of the LCD include
dedicated function keys as well as eight "soft keys"
(functions vary according to current display page) and
a rotary data encoder.
Handles
Two sturdy metal handles are fitted to the front panel.
The handles always should be used when carrying
the PLM, and when fitting it in or removing it from
a rack. Ensure that any door or removable rack front
cover has sufficient depth to clear the handles.
Dust filters
Two dust filters are fitted behind metal covers. To
remove the covers, loosen the thumbscrews located
behind the handles. Once detached, the dust filter
elements can be removed for cleaning. See section
11.2 for information on cleaning the dust filters.
The device never should be operated
without the dust filters in place.
Display
The display illuminates when the PLM is active.
Many of the control and metering functions found
on conventional amplifiers are replaced on the PLM
by a set of on-screen pages which, together with the
soft keys and rotary encoder, allow monitoring and
control of operating parameters. Multicolor LEDs
embedded in the soft keys display fault and warning
status indications.
5 4 8
3
6 7 9
Figure 6.1: PLM front panel layout
QUICK GUIDE OVERVIEW 6
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PLM SERIES
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The layout of various display "pages" is standardized
to a high degree for ease of use. In general, each
page is divided into two columns of four blocks,
with the left-hand column referring to inputs and
the right-hand to outputs. Each block has four rows
of data, which can be either alphanumeric or in the
form of a bargraph meter.
The brightness of the display and the adjoining
network activity LED can be adjusted in the Frame
page of the Main menu.
Comprehensive details of the various display pages
and the associated controls are given in section 9 –
Front Panel Interface.
standby
The PLM is powered on and off by the top left-most
button, STANDBY. See Dolby Lake Controller User
Manual PLM Edition Addendum (sections 5.3.1 and
5.7) for further information regarding local and remote
power control.
Mute Enable
Select MUTE ENABLE to allow muting via the soft
function buttons of the inputs to the Dolby Lake
system, the power output channels, or both. The
MUTE ENABLE legend in the button flashes when
the mode is selected. A second press will deselect
the mode; however, if left active, MUTE ENABLE
mode will automatically cancel after two minutes if
no further mute actions are taken.
Meter
The METER button scrolls through three alternative
views: HOME, MODULE, and TEMPERATURE.
PLM Series Operation Manual 13
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