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Summary of Contents for QSC DSP-4
- Page 1 DSP-4 Digital Signal Processor Amplifer Accessory Hardware Manual *TD-000103-00* TD-000103-00 rev.C...
- Page 2 - Consult the dealer or an experienced radio or TV technician for help. © Copyright 2002, 2004 QSC Audio Products, Inc. QSC® is a registered trademark of QSC Audio Products, Inc. “QSC” and the QSC logo are registered with the U.S. Patent and Trademark Office. All trademarks are the property of their respective owners.
- Page 3 “objects” are placed onto a palette and connected. This interface allows for almost infinite configuration possibili- ties. Once the DSP-4 has been set up as desired and the configuration saved to the DSP-4, connection to the PC is no longer required. This feature allows essentially tamper- proof amplifier DSP set up.
- Page 4 CH 1 INPUT, CH 2 INPUT: balanced female XLR’s. If not using the DataPort for inputs, these are where you connect the line-level audio inputs to the DSP-4. They are electronically balanced with an input impedance of 8.3k Ohms. If used in an unbalanced configuration, the input impedance is 3.7k Ohms.
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Page 5: Introduction - Functions And Features
Introduction - Functions and Features The full set of features is available on QSC DataPort equipped amplifiers connected to the DSP module via the DataPort connector (direct-connect or remote-mount with DPX-2 cable). “V2” DataPorts and non-QSC amplifiers do not support Output Power Limiting. “V2”... - Page 6 Signal Manager software Help file for available applications of the Contact Closure Trigger Input. Power Supply- The DSP module is normally provided power through its DataPort connection from the amplifier. If you are using an older amplifier or an amplifier that does not have a DataPort, an external power jack is provided on the DSP module. If external power...
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Page 7: Software Installation
Unpacking It is recommended that you keep the original packing material for reuse in the rare event that service be required for your DSP-4. If ser- vice is required, and the original packing material is not available, insure that the DSP-4 is adequately protected for shipment (strong box of appropriate size , sufficient packing material). - Page 8 •Clip limiter setting does not matter •Mode set as required (stereo, bridge mono, parallel) 2- Align the DataPort plug on the back of the DSP-4 with the DataPort jack on the back of the amplifier and gently push the module to seat the connector.
- Page 9 Remote mounting (4-ch., 8-ch., Powerlight & non QSC amp’s) The DSP-4 module requires “remote” mounting when used with the 4- and 8-channel CX, 4-channel DCA, Powerlight, and non-QSC amplifiers. If you have an amplifier that requires “remote” mounting, you need to: 1- Obtain the Accessory Remote Mounting Bracket.
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Page 10: Dataport Connections
Alternatively, the DataPort connection can be used ONLY for control and monitoring, while the audio is input via the XLR inputs. If using the DSP-4 in this manner, do not apply audio via the DataPort as it will be mixed with the XLR audio input signals. - Page 11 2- Plug the other end of the serial cable into an available COM port on your PC. Tighten the retaining screws. DSP-4 setup and programming takes place via the RS-232 port. Any time setup changes are required to the DSP-4, it must be connected to its host computer through the RS-232 port.
- Page 12 When the module is used with QSC amplifiers that do not provide +15 VDC through their DataPort connection OR is used with non-DataPort amplifiers, power must be supplied to the DSP-4 from an external power supply. All non-QSC amplifier applications require use of the DPX-1 accessory external supply. Contact QSC’s Technical Services Department or your QSC representative for more information.
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Page 13: Daisy Chaining
Daisy chaining the DSP-4 outputs to additional amplifiers: The DSP-4 has two XLR audio outputs, one for each channel. These outputs may be used for daisy-chaining the post-DSP signal to other amplifiers or for monitoring purposes. The XLR outputs may be used for daisy-chaining even when the DataPorts are used for input/out- put. - Page 14 “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.
- Page 15 (Ctrl-D). This will download the currently displayed configuration back into the DSP-4 (overwriting itself), allowing synchroni- zation of what is displayed with what is running in the DSP-4. At this point, you may adjust parameters or modify settings as usual.
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Page 16: Specifications
SPECIFICATIONS- Audio converters Resolution and Sampling Rate Frequency response at 3 dB below full scale input voltage Distortion Delay (throughput) Dynamic range Crosstalk Common-mode Rejection Polarity Mute INPUTS Program inputs Type Grounding Input sensitivity Impedance OUTPUTS Program Outputs Type Grounding Output Level, pad* out (pad in) *pad is software selectable Impedance... - Page 17 QSC’s Technical Services Department. No “output” cable required for QSC amps that support direct mounting. 1 two-channel amplifier per DSP-4 RS-232 port is used for “downloading” DSP configurations into the DSP-4 from your PC. Normal 9-pin serial data cable, male-to-female, 25 feet maximum...
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Page 18: Architect's And Engineer's Specifications
Delay— The DSP shall support multiple delays with a total available delay time of at least 910 milliseconds. Power Supply—The DSP shall be provided power through its DataPort connection to most QSC DataPort equipped amplifiers. For older amplifiers and non-QSC amplifiers, a coaxial power jack will be provided on the DSP for connection to an external power source. -
Page 19: Dataport Pinout
APPENDIX- DataPort Pinout NOTE! This information is shown for reference only and is subject to change without notice as the DataPort feature is spe- cific to QSC products and not intended for interface to other manufacturer’s equipment. NOTE! Powerlight 6.0 and Powerlight 9.0 amplifiers require that pin #9 be removed from the remote mounting interconnect cable (DPX-2). - Page 20 APPENDIX- Balanced connection is recommended for all inputs. The XLR inputs on the DSP-4 are electronically balanced. Balanced input cables are recommended to minimize noise pick up and prevent ground loops. If constructing your own cables, refer to the pinout, above, for proper connector wiring.
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Page 21: Application Information
As design improvements are continuous, the following information is subject to change. Contact QSC for current information. QSC’s DSP-4 Module has been designed to attach directly to the DataPort connector of QSC’s CX, DCA, and Powerlight 2 series amplifi- ers. When attached to CX, DCA, and Powerlight 2 amps manufactured 08/99 and later, the module receives its power through the DataPort from the amplifier. - Page 22 NOTES-...
- Page 23 NOTES-...
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Page 24: How To Contact Qsc Audio Products
QSC Audio Products 3 Year Limited Warranty QSC Audio Products, Inc. ("QSC") guarantees its products to be free from defective material and / or workmanship for a period of three (3) years from date of sale, and will replace defective parts and repair malfunctioning products under this warranty when the defect occurs under normal installation and use - provided the unit is returned to our factory or one of our authorized service stations via pre- paid transportation with a copy of proof of purchase (i.e., sales receipt).