Special Information About Saving Dsp-4 Configurations - QSC DSP-4 Hardware Manual

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Special Information About Saving DSP-4 Configurations

Special Information About Saving DSP-4 Configurations (continued)
When you build a DSP-4 configuration from scratch (or load one from disk) and perform an "Apply to DSP" operation, the information
downloaded into the DSP-4 module is NOT the graphical representation of what is displayed on the screen. The downloaded information
consists of the compiled algorithm coefficients of the functions, i.e. "just the math". If building a new configuration from scratch, when you
apply it to the DSP-4 you will also be prompted to save it to disk as a Configuration file (*.cfg). The path for this Configuration file is then
associated with the compiled information that is applied to the DSP-4. A previously saved (to disk) configuration file may also be applied
to the DSP-4, and that particular file path is associated with the algorithms now loaded in the DSP-4.
When you connect a DSP-4 to a computer, the Signal Manager software first attempts to locate and display the configuration file that has
been associated with the algorithm coefficients currently running in the DSP-4, to correlate "what you hear" with "what you see". This would
allow you to further adjust a delay or a filter parameter, for instance. If the correct file is located, based on the associated path name, the
graphical configuration is displayed. If the file is not found (the file has been renamed, moved, deleted, or you are not using the same
computer on which the DSP-4 was originally configured) the computer will display a message asking if you would like to browse for a
configuration.
Answering YES will open the Browse window. Once a configuration is selected, it is displayed on the screen, but not applied to the DSP-
4. Answering NO will merely display a blank workspace to the screen with no configuration loaded. At this point, what is displayed is NOT
what is currently running in the DSP-4 memory.
When the proper configuration file is displayed on the screen, go to the Configuration->Edit menu (Ctrl-E), followed by an Apply to DSP
command (Ctrl-D). This will download the currently displayed configuration back into the DSP-4 (overwriting itself), allowing synchronization
of what is displayed with what is running in the DSP-4. At this point, you may adjust parameters or modify settings as usual.
Overall Notes and Warnings
• The last applied configuration that is "running" in the DSP-4 when it is turned off becomes the active
configuration once the power is reapplied on to the DSP-4. This ensures that the system "comes up" just
as it was left the last time it was powered down.
• Do not run your amplifier "wide open" (maximum gain) while making real-time adjustments to the DSP-
4's setup. The nature of the communication path between the PC and DSP-4 is inherently more complex than
direct physical controls of an equivalent analog processing device. Unpredictable results may occur due
to failure of the PC or the communications channel. Under such circumstances, damage to your speakers
is possible if the amplifier gain is set for high power levels. Use the minimum useful gain settings while
making system adjustments.
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