Troubleshooting guide

Modular Processors
SHURE
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P4800 System Processor Software Guide Page 45 of 108
Threshold Exceeded Indicator
This indicator appears lighted in yellow when the input signal to the processor block exceeds the
specified threshold.
Signal level has exceeded the threshold
Signal level has not reached the threshold
Threshold
This indicates the gain level the signal must reach before the processor begins
compressing it. You can change the value by clicking on the spin buttons, typing in a
specific value, or using the threshold slider above the transfer curve graph. The
available range of values is from –60VU to +20VU in 0.5VU increments, with a default value of 0VU.
Ratio
This indicates the amount of gain reduction you are achieving at the output of the
processor, relative to the input level. A setting of 4:1, for example, means that a 4dB
increase in the level of the program material results in a 1dB increase in the output level
from the processor. You can change the value by clicking on the spin buttons, typing in a specific
value, or using the ratio slider on the right-hand side of the transfer curve graph. The range of available
values is from 1:1 to INF:1, in increments of a tenth, with a default value of 2:1 for the compressors
and 10:1 for the limiters. The Peak Stop Limited has a fixed ratio of INF:1.
Attack
This indicates how much time the processor waits before starting to reduce the gain,
once the input signal level passes the threshold. The range of available values is from
1ms to 200ms, with a default value of 5ms for the compressors and 2ms for the limiters.
The Peak Stop Limiter has a fixed attack time of 0 ms.
Decay
This indicates how much time the processor waits before returning to unity gain, once
the input signal level drops below the threshold. The range of available values is from
50ms to 1000ms, with a default value of 100ms for the compressors and 50ms for the
limiters.
Knee
In "Soft" processors, this control displays a pull-down list from which you can select either soft knee or
hard knee compression. The default setting is soft. In the standard compressors and limiters, this
control is disabled.
Soft Knee
Processor
Select "Soft" or "Hard" from the pull- down list.
Standard
Processor
Control is disabled.
Default
Click this button to reset the processor to its system default settings.