TC Electronic LM2 - Manual (Page 14)

14
THE dISPLAy - HOME PAgE
Set Gain
Reset Meter
Pause
Set Gain
Press Set Gain to insert a gain offset before the loudness
meter. This function is used for easy normalization of
programs, and under the protection of LM2’s true-peak
limiter. Set Gain may be disabled on the I/O page. Only
Factory “Ingest” presets have the function enabled.
Example
- Loudness Target level has been set to -23 LUFS
(EBU standard)
- LM2 has measured a program to -35.8 LUFS
- Press Set Gain and a gain of +12.8 dB is applied
When SET GAIN is active the applied gain, negative or
positive is indicated in the upper left corner.
Attention - the Set Gain function resets
measurement and logging
Set Gain may be used during transmission by an
experienced operator, and pressed more than
once. Each time Get Gain is pressed, output
loudness will be re-aligned to match Target
loudness. This may create level-jumps, but at a
time of the operator’s choosing.
Reset Meter
Press both the HOME and PAUSE buttons to reset
metering. The display briefly indicates reset.
Pause
For easy reading at a specific time the metering can be
paused by pressing the PAUSE button.
Pause can also be used to exclude certain program
material such as commercials from measurement , or to
only measure, for instance, regular speech if so desired.
Start of a new measurement
When LM2’s meter is reset by pressing Home and Pause,
instead of numbers it shows “-” markings in the display.
Two lines, “- -”, indicates that the measurement has been
reset, and that no audio above the safety gate threshold
(-70 LUFS) has yet been detected. One line, “-”, indicates
that audio level above the safety gate has been detected
and that it will influence the measurement. Once enough
audio has been registered for it to be of statistical value,
descriptor numbers appear.
Sliding Loudness does not show “- -” when the
meter is reset. This is because Sliding Loudness is
defined as a running measure without safety gate.
If the level drops to -100 LUFS or lower, Sliding
Loudness displays “-”.