TC Electronic LM2 User Manual - The Display - Home Page

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 “-”.