Dolby LM100 Broadcast Loudness Meter User's Manual

LED Indicators
Table 3-1
Function
Factory reset
Special Function Button Combinations (continued)
Action/Result
During reboot, press and hold Enter; the status display
provides you with the option of restoring factory defaults or
completing the boot sequence.
Note: Restoring factory defaults includes all presets and
GPI/O configuration assignments.
3.3 LED Indicators
The Audio Alarm indicator glows if a user‐configurable signal‐condition alarm is triggered,
as described in Section 5.5.
The Error indicator glows when an error prevents the unit from processing the selected
input correctly (for example, if there is a loss of input signal or the input signal does not
match the requirements for the selected input type). Error conditions are detailed in
Table 3‐2. When the Error indicator is triggered, the Error Stats status menu provides
more information regarding the source of the error, as detailed in Table 3‐2
Note:
The Fault indicator glows if there is an LM100 hardware fault.
Table 3-2
Error Conditions and Indicators
Menu Display Error Corrective Action
Invld Frmt
(Invalid format)
Invld Rate
(Invalid rate)
Invld Prog
(Invalid program)
DE Frm Dsc
(Dolby E frame discontinuity)
Invld AES Ch
(Invalid AES channel)
Invld Bstr
(Invalid bitstream)
The input format does not match the selected
decode format.
The input is a valid PCM signal, but the
sampling rate is not 32, 44.1, or 48 kHz.
The input is a valid Dolby ® E signal, but the
selected Dolby E program number is not
present in the input stream.
The Dolby E frame count is not continuous,
indicating a missing frame or edit.
The input is a valid Dolby Digital signal, but the
selected AES3 channel contains an invalid
bitstream.
The digital input is selected, but the unit is
receiving a bitstream that is not Dolby E or
Dolby Digital.
Check the input signal format or
change the selected decode format.
Use the correct sampling rate.
Select a valid program number for the
input stream.
Check the Dolby E stream.
Select a valid AES3 channel setting.
Provide a valid bitstream.
No Input Input is missing. Change the input selection or check
the input source.
Invld Ch Md
(Invalid channel mode)
RF Ov Prot
(RF overmodulation protection
enabled)
No DD Md
(No Dolby Digital metadata)
The input is a valid Dolby E signal, but the
metadata indicates more channels than exist in
the selected program.
The Dolby E metadata RF overmodulation
protection parameter is enabled in one or more
of the programs.
Dolby E metadata does not contain Dolby
Digital metadata.
Check the channel mode configuration
parameter within the selected
program in the Dolby E stream.
Check the Dolby E stream.
Check the Dolby E stream.
Dolby ® LM100 Broadcast Loudness Meter User’s Manual 15