SPL 9945, User Manual

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20
Operation
Displays
S-Detect.
The S-Detect. LED shows when S-sounds have been detected. It is only active
when the De-Esser is switched on and is independent from the selected S-
Reduction setting.
Clip
The Clip LED shows overload in the unit. The clipping level of the LED lies
approximately 2 dB below the internal full scale (conforms to + 19 dBu). The
Clip LED should flash as seldom as possible.
At all relevant points of the signal flow the display gets read off: behind the
Pre-amplifier, behind the Compressor/Limiter, behind the EQ and behind the
Output control. All possible causes for overload can be directly checked
(overdriven Microphone/Instrument/Line Gain, an excessive Make Up value
in the Compressor/Limiter, too much boost in the EQs or too high output
level).
Possible causes of overload can be quickly detected by simply switching
off the modules individually. If overloads occur during recording the
quickest remedy is to gradually reduce the Gain control in the Pre-amplifier.
Signal
The Signal LED illuminates when a signal is being received at the Pre-ampli-
fier. This provides a quick method of checking that a signal source is
correctly connected. All levels above -50 dB are covered.
Warm Up
The Warm Up LED gives an indication regarding the warm up phase of the
tube stage. When the LED is extinguished the Channel One is ready for
operation; it is possible that before this has occurred the output signal is low
and sounds distorted.