Stand By; Error Reporting - Crown AMB-5 User Manual

IQ–MSD Turbo 1.4 Advanced IQ System Software
Decay Time: Controls the limiter response when the output level drops below the Threshold. Legacy IQ
P.I.P.s: The Decay Time range is 1 to 30 seconds. IQ2 P.I.P.s: The Decay Time range is 0.1 to 30 seconds.

5.4.3 Stand By

The Stand By function conserves energy by turning off the amplifier high-voltage supplies when an input signal
is not detected for a predetermined length of time. It provides the biggest savings in systems where audio inputs
are not continuous.
Stand By: Turns on/off this feature.
Gate Level: Sets the point at which Stand By turns on the amplifier high voltage supplies. For example, setting
the Gate Level to –30 dB causes the high-voltage supplies to be turned off when the input level falls below –30 dB.
Gate Level is adjustable from 0 dB to –50 dB in 1 dB steps
Turn Off Time: Prevents the high-voltage supplies from being cycled unnecessarily. The Turn Off Time is the
length of time, in seconds, that Stand By waits before turning off the high-voltage supplies when the input level has
dropped below the Gate Level. Legacy IQ P.I.P.s: The range is 5 to 60 seconds. IQ2 P.I.P.s: The range is 0 to
255 minutes (zero is a special setting for testing the Gate Level setting).
Turn On Delay: IQ P.I.P.'s are equipped with a built-in turn on delay whose duration is determined by the IQ
address (Delay = 10 ms IQ address). The higher the address, the longer the delay before the amplifier's high-
voltage supplies are turned on. This delay prevents a large number of amplifiers from turning on at the same time
and, possibly, tripping the AC circuit breakers. It may not be desirable to use this capability when using Stand By
because the high-voltage supplies must be turned on instantly when an input signal above the Gate Level is
detected. Turn off the Turn On Delay control to disable the delay.
Tip: Experiment with the delay enabled and disabled. If the system has only a few amplifiers, and each has a
low IQ address, the turn on delay may be short enough to make the use of the Turn On Delay unnecessary.

5.4.4 Error Reporting

Another SmartAmp feature is the ability to alert you if a fault occurs. A visual warning in the form of a pop-up
message can appear for any condition described in this section.
Fault Warning
An amplifier fault condition occurs when a channel fails. The host computer reports this condition when Fault Error
Report is toggled on.
Fault: (Fault Error Report) Turns on/off this feature.
Input Drive Level: (This parameter is only used with legacy P.I.P. amplifiers. Amplifiers with PIP2
compatibility have a dedicated "fault" signal.) Allows the user to define the threshold for a fault indication. For
example, set the Input Drive Level to –35 dB if you do not want a Fault error message to be displayed while
the input signal is greater than –35 dB regardless of IOC status. The threshold can be set from 0 dB to –50 dB
in 1 dB steps.
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