Appendix; Faults And Warnings Overview - Lab.gruppen PLM series Operation Manual

Appendix

9. Appendix
9.1

Faults and Warnings Overview

Fault or warning conditions are indicated by the LED shown in Figure 7-3 on page 34, and also by LEDs associ-
ated with the inputs and outputs on the PLM. As the LEDs indicate several types of faults or warnings, a
brief textual description of the fault or warning is provided on the LCD display. Section 7.8.2 on page 34 details
the fault and warning indications that appear on the front panel. Table 9-1 lists the events that may have
triggered each fault or warning condition.
Displayed Text
AMP CH. MUTE
AUDIO FAULT
CAL ACTIVE
CTRL OFFLINE
CURRENT CLIP
INPUT CLIP
LM PREC. LOW
LOAD NOT VER
MOD. IN MUTE
MOD. OUT MUTE Module Output Mute
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PLM Series Operation Manual rev 1.1.9
Event Log Text Category
Amp Channel Mute Mute
status
Frame Fault: Audio Fault
Interface
n/a Fault
Frame Offline Warning
n/a Clip
n/a Clip
Speakersafe precision Warning
low
LoadSmart: Load Not Warning
Verified
Module Input Mute Mute
status
Mute
status
Type Description
Amplifier Mute The audio signal has been muted in
the power output stage.
Audio interface fault An internal audio fault has arisen
and the unit needs servicing.
Current Average Ensures that the PLM's power
Limiter output stages are not overloaded.
This should never happen during
normal program material.
Controller/Frame The PLM is no longer able to
offline communicate with the Dolby Lake
Controller.
Current Protection PLM's power output stage current
active has exceeded the fixed safe
maximum and the Current Peak
Limiter has become active to limit
it.
Input clip The input signal level is too high
and is causing clipping at the input
stage
SpeakerSafe precision A SpeakerSafe warning indicating
low insufficient data to produce
reliable results. This may occur,
for example, if a channel is being
driven at a very low level.
Load not verified A Module containing a Fingerprint
has been loaded, but the load is yet
to be verified with LoadSmart.
Module Input Mute The audio signal has been muted at
the Module input of the Dolby Lake
processor.
Module Output Mute The audio signal has been muted in
the output stage of the Dolby Lake
processor.