User manual QSC AUDIO DSP-4

[. . . ] DSP-4 Digital Signal Processor Amplifer Accessory Hardware Manual *TD-000103-00* TD-000103-00 rev. C IMPORTANT SAFETY PRECAUTIONS & EXPLANATION OF SYMBOLS The lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the user to the presence of uninsulated "dangerous" voltage within the product's enclosure that may be of sufficient magnitude to constitute a risk of electric shock to humans. The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in this manual. CAUTION: To reduce the risk of electric shock, do not remove the cover. SAFEGUARDS ·Electrical energy can perform many useful functions. This unit has been engineered and manufactured to assure your personal safety. [. . . ] Input sensitivity is software-selectable from 1. 5 to 18 volts (rms) full-scale. Use balanced connections for the lowest possible noise levels and to minimize the possibility of hum-inducing ground loops. 10 Outputs- The DSP-4's post-processor audio is output to the rear-panel DataPort AND the XLR output connectors. The outputs are electronically balanced with an impedance of 600 ohms. The XLR out's can be used for daisy-chaining the processed audio to additional amplifiers, even when connected to a DataPort-equipped amplifier via the rear-panel DataPort. The maximum number of QSC amplifiers that can be connected to the DSP-4's outputs (including the output DataPort) is five. The effect on output level signal strength is about -3 dB when five QSC amplifiers are daisy chained. An additional +12 dB of output gain is available in software (OUT1 and OUT2 blocks). If making your own cables, please refer to the Appendix for proper pinout of the XLR connectors. Pinouts are provided for balanced and unbalanced configurations. RS-232 Connection RS-232 connection to the DSP-4 module is required for "setting up" a configuration. After being setup and the proper operation verified, the RS-232 connection is no longer needed. However, for "real time" adjustments, the RS-232 connection to the computer must be maintained. RS-232 PORT Connection1- Plug the 9-pin serial cable into the connector labeled RS-232 . Orient the DB-9 plug correctly, insert the plug fully into the RS-232 port and finger-tighten the retaining screws. 2- Plug the other end of the serial cable into an available COM port on your PC. Any time setup changes are required to the DSP-4, it must be connected to its host computer through the RS-232 port. If "real-time" control of the DSP-4 is required, the RS-232 port connection must be maintained. If "real-time" control is not required, then the DSP-4 can be setup first and then disconnected from the PC. The RS-232 connection does not have to be maintained for the DSP-4 to operate. Setup & programming can also be done via Ethernet network communication when using QSC's QSControl products. Refer to QSControl documentation for detailed information. 11 DPX-1 Accessory Power Supply Connection to accessory external power supply (DPX-1) 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. Any damage to the DSP-4 caused by connection to a non-QSC external power supply is not covered under the warranty. Use of the DPX-1 with QSC amplifiers that do provide +15VDC through the DataPort will not harm the DSP-4, although it is not necessary. Connection to an improper voltage source can cause immediate damage to the DSP-4! When using the external power source, we recommend that the DSP-4 be powered-up before the amplifier in order to insure trouble-free start-up. [. . . ] TO CLARIFY: CX, DCA, and PL2 amps made prior to August 1999 DO NOT provide adequate power supply voltage to the module, requiring the use of the same type of external DC supply as used with Powerlight amplifiers. The amps in question will have a serial number PRIOR to 0899XXXXX, where the first four digits of the serial number are the MMYY datecode. Again, the modules WILL work with these amps, but will require the use of our external power supply. ·Full feature set, Direct-mounting, No external power required, No special interconnect cables required for the following QSC power amplifiers with serial numbers of 0899XXXXX and later, where the first four digits of the serial number are the MMYY datecode : CX series: CX302 - CX1202V (all) DCA series: DCA1222, DCA1622, DCA2422, DCA3022, DCA342 PL2 series: PL224, PL230, PL236, PL218 PL2A series:All ·Remote Mounting Required, QSC DataPort Cable required: Full feature-set, no external power required. CX series: CX204V, CX254, CX404, CX168 DCA series: DCA1644, DCA1824 ·Remote Mounting, QSC DataPort Cable and External Power required: Full feature-set. [. . . ]