Contact Closure Feature - QSC DSP-30 Hardware Manual

Use:

Contact Closure Feature

Contact Closure Feature
The contact closure feature is used to trigger gain changes
in the DSP. Any configuration that uses one or more
switched gain objects (see Signal Manager software Help
file ) can take advantage of this feature. The contact
closure will trigger all switched gain objects at once.
Wiring Diagram for Contact Closure
This feature requires the construction of a simple RS-232 cable (or through-adapter plug) that brings
out pins 5 (GND) and 9 (contact closure trigger). These pins may be connected to a simple toggle or
pushbutton switch that will be used to trigger a switched gain object in a DSP configuration. Refer to
Signal Manager software Help file for available contact closure features.
18
All switched gain objects in a DSP configu-
ration will be triggered by the one contact
closure. It is not possible to trigger
switched gain objects individually!