Instruction manual

Networked PIP Series
page 54
Reference Manual
The AUX output has two enhanced modes: Error Reporting and Flash Preset. In Error
Reporting mode, the AUX port can be set up to change state when any selected error (clip,
thermal, amp fault, load impedance, and AC line level) is detected. With this feature, the
AUX output of each amplifier can be wired to a separate light on a panel at the control loca-
tion to indicate whether the amplifier is or is not in error. Generally, the AUX output inverter
is used for such a system. This way if the panel light is on the operator knows “all is well”.
If it is off the operator knows the amplifier has an error or that it is not powered.
Figure 7.2 Wiring a Remote Preset Selector
The other enhanced AUX output mode is Flash Preset. This mode allows remote indication
of the selected preset. In this mode, the AUX output will flash a number of times equal to
the selected preset followed by a pause. By using the Change Preset AUX input mode and
the Flash Preset AUX output mode, this allows a remote panel to function as a preset con-
troller. The panel would contain a simple light and pushbutton connected to the AUX output
and input. See Figure 7.2.
7.1.2 AUX Input
In its basic input mode, the AUX input allows an external input source to be detected by the
software. This input can be a temperature sensor, door closure switch, or operator pushbut-
ton. It can be used by the IQ software to change configuration settings on any or all system
devices. See the Harman Pro System Architect or Crown IQ System Help files for exact
information.
Pin 5 of the AUX input is a power-supply pin designed for use by the AUX input pin. Since
the AUX input floats low, the AUX input can be triggered by just a simple switch closure
between it and the AUX power pin. No external power supply is needed to operate the AUX
input under most conditions. If the AUX input is used to sense a externally supplied voltage
it must be scaled so that low inputs are between 0 and 1.6 VDC, and high inputs are
136763-7_4-08_networked_pip-series_reference_manual.fm Page 54 Monday, March 17, 2008 11:17 AM