Software Instruction Manual

IQ–MSD Turbo 1.4 Advanced IQ System Software
Page 128
Report VIA Aux: (Only available for the IQ–P.I.P.–AP and IQ–P.I.P.–SMT.) Error reporting not only
displays an on-screen message when a fault condition occurs, it can also send a signal out the AUX port. It uses
reverse logic, turning on the AUX port when everything is normal and turning it off when an “error” has
occurred. In this way it can also indicate a power loss. When this feature is enabled it preempts the AUX port,
allowing nothing else to control it. This occurs without regard to whether ASA and/or AUX are turned on or off.
Important: The Report Via AUX parameter cannot be accessed from the sub-block of the IQ–P.I.P.–SMT.
It must be controlled from a graphics plate.
Prolonged IOC Warning
The Input/Output Comparator continuously monitors of the amplifier for distortion. If distortion is 0.05% or more, an
IOC error signal is generated.
IOC: (IOC Error Report) Turns on/off this feature.
Time and Events: Use the Events control to set the number of IOC errors that must occur within the time
specified by the Time control for a warning message to be displayed. For example, if Time is set to 5 and Events
to 10, an error message is displayed if ten IOC errors occur within five seconds. The total range for Time is 0
to 10 seconds in 1 second steps. Events can be set to any number between 0 and 250 in steps of 1.
Short Warning
Short: (Short Error Report) Turns on/off this feature.
ODEP: Sets the level above which a short will be assumed to exist. For example, setting ODEP to 75%
causes an output message to be displayed whenever the ODEP level rises above 75. The range of this control
is from 0% to 100% in 1% steps.
5.4.5 Input Compressor
This feature is only available for IQ2 P.I.P.s. The Input Compressor reduces the gain of the amplifier to compress
the input signal, reducing its dynamic range.
Input Compressor: Turns on/off this feature.
Threshold: Sets the point at which the compressor begins to affect amplifier gain. The level is measured at the
input to the P.I.P. and corresponds to the level shown on an input meter. The compressor is “feedforward,”
meaning that the level detection point is located before the gain control stage. Threshold can be set from +16 dB
to –40 dB in 1 dB steps.
Attack Time: Sets the rate at which the compressor responds to changes in the signal. The attack time is
defined as the time it takes the compressor to attenuate the input signal by 10 dB. The range is from 1 millisecond
to 2 seconds.
Release Time: Sets the release time of the Input Compressor. The release time is defined as the time it takes
the compressor to increase the input gain by 10 dB. The range is 100 milliseconds to 30 seconds.
Ratio: Sets the compression ratio for the Input Compressor. The range is 1, 2, 4, 8, 16, 32,
∞ to 1. Note: 1:1
is the same as “off.”