06
High-pass filter indications
⑥
·
The currently active high-pass setting is illuminated.
Setting a high-pass filter
·
⑦
High-pass filters can be set by briefly pressing the high-pass filter push button
. Settings are: Off,
12 dB / octave at 40 Hz and 6 dB / octave at 150 and 300 Hz. High-pass filters eliminate unwanted
low frequency noise such as structure borne noise.
Automatic attenuation function
The microphone will automatically adjust to the next higher attenuation level if it experiences clipping due to a
high SPL. The microphone enters and leaves the automatic attenuation mode by constantly pressing the
attenuation push button
⑤
for more than 2 seconds. The microphone is set to automatic attenuation mode if
the status indicator
①
is illuminated in red. Please note that the microphone will need 1/2 second to adjust to
the new attenuation level.
LCT 640
Using the mic
