Lab.gruppen PLM series Operation Manual

Also see for PLM 10000Q: Supplementary guide User manual addendum Specifications Quick start Technical data

Contents

Lab.gruppen PLM series Operation Manual Manual pdf 77 page image

PLM Series Operation Manual rev 1.1.311. Appendix7711. Appendix11.1 Faults and Warnings OverviewThe various fault or warning conditions that may arise in the PLM are indicated by the tricolor LEDs inthe eight soft function buttons around the display. Because each LED indicates several types of faults orwarnings, a brief textual description of the fault or warning type is given on the display adjacent to the softbutton(s).Sections 9.10.2 and 9.11 detail all the warning and fault indications.Table 11.1 provides additional explanation of what problems the PLM might have encountered to give rise tothe each of the fault or warning conditions. Note that some of the conditions give rise to both a warning anda fault indication; in these cases the warning is given by a yellow LED indication as the operating parameterin question approaches the safety threshold, with the fault state being indicated by the LED turning redwhen the threshold is actually reached (with a mute being applied in some cases).Warning, Fault, Clip and Mute indications, listed alphabetically by Displayed TextDisplayed Text Event Log Text Category Type DescriptionAMP CH. MUTE Amp Channel Mute MutestatusAmplifier Mute The audio signal has been muted in the poweroutput stage.AUDIO FAULT Frame Fault: AudioInterfaceFault Audio interface fault An internal audio fault has arisen and the unit needsservicing.CAL ACTIVE n/a Fault Current Average Limiter Ensures that the PLM’s power output stages are notoverloaded. This should never happen during normalprogram material.CTRL OFFLINE Frame Offline Warning Controller/Frame offline The PLM is no longer able to communicate with theDolby Lake Controller.CURRENT CLIP n/a Clip Current Protection active PLM’s power output stage current has exceededthe fixed safe maximum and the Current PeakLimiter has become active to limit it.INPUT CLIP n/a Clip Input clip The input signal level is too high and is causingclipping at the input stageLM PREC. LOW Speakersafeprecision lowWarning SpeakerSafe precisionlowA SpeakerSafe warning indicating insufficient datato produce reliable results. This may occur, forexample, if a channel is being driven at a very lowlevel.LOAD NOT VER LoadSmart: Load NotVerifiedWarning Load not verified A Module containing a Fingerprint has been loaded,but the load is yet to be verified with LoadSmart.MOD. IN MUTE Module Input Mute MutestatusModule Input Mute The audio signal has been muted at the Moduleinput of the Dolby Lake processor.MOD. OUT MUTE Module Output Mute MutestatusModule Output Mute The audio signal has been muted in the output stageof the Dolby Lake processor.MODULE CLIP n/a Clip Module Output clip The signal level on the outputs of the Dolby Lakeprocessing module is too high and is clipping.n/a Frame Fault: No InputSourceFault No input source The chosen input type has been deselected or lostand the input type selector has no alternative inputsources in the priority list.n/a LoadSmart verification Event LoadSmart active LoadSmart load verification is in progressNO LOAD Channel Fault: No LoadDetectedFault No load No load detected at the power output channel.