User Manual

4
LCT 540 S
lin
80 Hz
160 Hz
0 dB
-6 dB
-12 dB
4. Control elements - User interface
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Figure 4.1
// Status indicator 1
Illuminated white: standard operation
Flashing red: clipping occurs
Not illuminated: key-lock active
Illuminated red: Automatic Attenuation active
Flashing red/white or green/white: Clipping History active
// Low-cut indicator 2
Use left pushbutton to change the low-cut settings. Low-cut lters eliminate unwanted
low-frequency sounds, compensate the proximity effect and reduce structure-borne noise.
// Pre-attenuation indicator 3
Use right pushbutton to select the pre-attenuation. Use this setting to avoid
clipping when recording very loud sound sources.
// Pushbutton functions 4
Key-lock: Hold the center pushbutton for more than 2 seconds to activate the key-lock mode.
Now all pushbuttons are locked until you press any button for 2 seconds again.
Clipping History: Hold the left pushbutton for more than 2 seconds to enter Clipping History. If the status indicator
ashes green/white, no clipping occurred. If the status indicator ashes red/white, clipping occurred. The illuminated
pre-attenuation symbols show at which pre-attenuation setting the clipping occurred. Press any button for more than 2
seconds to exit Clipping History. Once you exit the Clipping History or remove 48V the history is deleted.
Automatic Attenuation: Hold the right pushbutton for more than 2 seconds to activate Automatic Attenuation and
the status indicator turns red. In this mode, the microphone adjusts the attenuation setting automatically when clipping
occurs. The adjustment produces an audible sound. Therefore, this feature is intended to be used for recording test
runs only and to set all mics to the correct attenuation. It is not recommended to be used during actual recordings.
Deactivate by pressing any button again for more than 2 seconds; the status indicator turns white again.