Troubleshooting guide

Modular Processors
SHURE
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P4800 System Processor Software Guide Page 41 of 108
Transfer Curve Graph
The transfer curve graph displays the threshold level and compression ratio settings as graphical
elements that you can position with the mouse. The resulting transfer curve represents the change in
the signal output level.
Maximum Gain Line
The greatest amount that the AGC will boost the signal is +12dB, as indicated by the maximum gain
line. This prevents undesirable noise modulation or acoustic feedback problems that may arise from
excessively boosting low-level signals. The maximum gain line only appears in the transfer curve
graph when the combination of the threshold, hinge, and ratio settings result in the AGC imposing the
+12dB limit.
Transfer Curve Meter
When you are in Live Mode, this meter depicts the signal's input level and relative output level, so you
can monitor the processor's effect on the current program material. This feature can be toggled off and
on by selecting the [Options>Transfer Curve Meter] menu option. Its default status is on.
Note: You may experience reduced software performance if you have a large number of meters
active overall in the System Processor software. You can selectively turn off either the
transfer curve meter or the gain reduction meter, or both, from the [Options] menu.
Threshold Slider
The position of the threshold slider corresponds to the setting in the threshold control. You can drag
this slider with the mouse, left and right along the top edge of the transfer curve graph, to change the
threshold setting.
Ratio Slider
The position of the ratio slider corresponds to the setting in the ratio control. You can drag this slider
with the mouse, up and down along the right-hand edge of the transfer curve graph, to change the
ratio setting.
Hinge Slider
The position of the hinge slider corresponds to the setting in the hinge control. You can drag this slider
with the mouse, left and right along the bottom edge of the transfer curve graph, to change the hinge
setting.
Gain Reduction Meter
This meter indicates the total gain increase or reduction you are achieving on the input signal with the
current processor settings. This feature can be toggled off and on by selecting the [Options>Gain
Reduction Meter] menu option. Its default status is on.
Gain Controls
Use the gain controls to adjust the input and output gain levels. The range of available gain values is
between –12dB and +12dB in 0.5dB increments, with 0dB as the default value. You can change the
value using the conventions explained in the Faders section on page 31.
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