UAD Powered Plug-Ins Manual v5.2 - Just Music

Signal
Overload
Link
Link indicates when stereo operation is active. It illuminates when
used in a stereo-in/stereo-out or mono-in/stereo out configuration.
It does not illuminate when used in a mono-in/mono-out configuration.
This 4-stage “LED” indicates the presence of audio signals at the
input of the plug-in. When the input signal is below -25dB, the indicator
is off. At -25dB to -19dB, the indicator glows slightly. At -
18dB to -10dB, it lights with medium intensity. At -9dB to 0dB, it
shines brightly.
The Overload “LED” illuminates when the signal level at the output
of the plug-in reaches 0dBFS. The indicator matches the behavior
of the original hardware unit. However, in the software
plug-in version, the output can be “overloaded” without causing
distortion.
Note: Link is an indicator only; it does not control any plug-in parameter.
On/Power
The On and Power switches determine whether the plug-in is active.
Click the On or Power switches to change the state. On and
Power illuminate when the plug-in is active.
When the plug-in is inactive, processing is disabled and UAD DSP
usage is reduced.
Note: The On and Power switches perform the exact same function.
WebZine Article
An interesting article about the SPL Transient Designer is available in the “Ask
The Doctors” section of our November 2007 WebZine:
http://www.uaudio.com/webzine/2007/november/index2.html
UAD Powered Plug-Ins Manual - 314 - Chapter 37: SPL Transient Designer