Page 2 DP6i Operators Manual DP6i Quick Reference THINGS YOU NEED TO KNOW The parameters and their values are listed in the table below. Parameter ID NUMBER INTERFACE Values Notes Shadow ID's only available when interface is set to `slave' (INTERFACE 06 - 08) Master RS232 38400 baud Master RS485 38400 baud Master RS232 19200 baud Master RS485 19200 baud Master RS232 9600 baud Master RS485 9600 baud Slave RS485 38400 baud Slave RS485 19200 baud Slave RS485 9600 baud Master RS232 38400 baud & Wiser Wireless MIDI Relay Off MIDI Relay ON channel specific ­ only available when Interface is set to `Master' (00 - 05) Midi Relay ON omni on Analogue in ­ Analogue out Analogue in ­ Digital out Digital in ­ Analogue out Digital in ­ Digital out ­ if no AES interface is fitted or interface is set to `Slave (06 ­ 08), display will be fixed at AA GPI OFF ­ if no GPI interface fitted, display will be fixed at Off GPI ON ­ works in `simple' mode only MIDI AES 00 - 32 00 01 02 03 04 05 06 07 08 09 Of 01 - 16 Al AA Ad DA DD of on GPI By default, the LED display shows the last recalled memory number as long as the memory hasn't been edited remotely ­ then it will display . 00 The memories cannot be recalled using the quick access keys unless the unit is in the default mode ­ i.e. no yellow parameter LEDs are illuminated (with the exception of the `Shadow' LED). Initially there will be no memories stored in the unit, so the quick memory recall buttons will not function. The Mute Unit key will silence the entire unit, but the meters will continue to function. The remote software is unaware of this mute function ­ it is local control only. DP6i Operators Manual Page 3 Contents Important Safety Information Unpacking the DP6i Introduction Front Panel Familiarisation Operating the DP6i Note about operation with Start-up procedure Preliminary Set-up Quick Memory Recall Keys Mute Unit Key WindowsTM software. 5 6 7 9 11 11 11 11 11 12 Interface Operation Guides RS232 Interface RS232 Connection (Single Unit) Shadow ID Numbers RS485 Interface RS485 Connection Midi Interface Midi Connection GPI Interface 13 13 14 14 16 17 18 18 19 Locking the Unit Remotely DP6i Configurations Introduction 2 x 2 way with Mono Sum 2 x 3 way 4 way + 2 5 way + 1 6 way 20 21 21 21 22 23 24 25 AES / EBU Operation Guide AES / EBU Connections 26 26 Operating Notes Operating Level Grounding Crossover Filter Slopes Time Alignment Output Limiters Setting Accurate Limiter Thresholds 27 27 27 28 28 29 30 Specifications Warranty Options and Accessories Appendices Appendix 1: Limiter threshold in dB to Vrms lookup table. Appendix 2: Default X-over settings and names for all formats. Appendix 3: Additional Information: General Purpose Interface 32 33 33 34 34 35 36 Page 4 DP6i Operators Manual An example of this equipment has been tested and found to comply with the following European and international Standards for Electromagnetic Compatibility and Electrical Safety: Radiated Emissions (EU): RF Immunity (EU): Electrical Safety (EU): EN55013-1 (1996) EN55103-2 (1996) RF Immunity, ESD, Burst Transient, Surge, Dips &Dwells EN60065 (1993) Important Safety Information Do not remove Covers. No user serviceable parts inside, refer servicing to qualified service personnel. This equipment must be earthed. CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN DO NOT EXPOSE TO RAIN OR MOISTURE ATTENTION RISQUE DE CHOC ELECTRIQUE NE PAS ENLEVER NE PAS EXPOSER A LA PLUIE NI A L'HUMITE It should not be necessary to remove any protective earth or signal cable shield connections. Do not defeat the purpose of the polarized or grounding-type plug. A polarized plug has two blades with one wider than the other. A grounding type plug has two blades and a third grounding prong. The wider blade and the third prong are provided for your safety. When the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet. Only use this equipment with an appropriate mains cord. In the USA the cord should comply with the requirements contained in the Standard for Cord Sets and Power Supply Cords, UL 817, be marked VW-1, and have an ampacity rating not less than the marked rating of the apparatus. DP6i Operators Manual Page 5 Thanks Thank you for choosing the XTA DP6i for your application. Please spend a little time reading through this manual, so that you obtain the best possible performance from the unit. All XTA products are carefully designed and engineered for cutting-edge performance and world-class reliability. If you would like further information about this or any other XTA product, please contact us. We look forward to hearing from you in the near future. Unpacking the DP6i After unpacking the unit, please check it carefully for any damage. If any is found, immediately notify the carrier concerned - you, the consignee, must instigate any claim. Please retain all packaging in case of future re-shipment. Page 6 DP6i Operators Manual Introduction The DP6i is a powerful DSP based audio processor, ideally suited for install applications, where it combines the functions of a multitude of conventional products in a compact 1U unit with extensive remote control capabilities. To achieve this, the DP6i has two inputs and six outputs which can be configured in five basic crossover modes ­ 3 x 2 way; 2 x 3 way; 4 way; 5 way; and 6 way. Each input has a gain control, variable delay and eight bands of fully parametric equalisation. Each output has a gain control, variable delay, high and low pass filters, five bands of fully parametric equalisation, polarity switching and, additionally, a fully featured limiter. Remote control1 is catered for in the form of MIDI, RS232 and RS485 ports, and multiple user memories are provided for the storage and recall of settings.. Security lock-out is available for all controls. The DP6i is also available with optional AES/EBU digital inputs and outputs. It may be controlled externally by XTA's proprietary WindowsTM software, along with existing and future `Audiocore' products. Features Superb audio quality ­ carefully optimised double precision signal processing coupled with a 40-bit internal data path ensures a dynamic range in excess of 110dB. The high sampling rate means minimal filtering providing exceptional sonic purity. A flexible 2-input/6-output multi-mode format caters for any configuration, regardless of scale. A total of 46 parametric equalisation bands are available, each providing +15 to ­30dB of gain at centre frequencies between 20Hz and 20kHz, with a wide range of `Q's available between 0.4 to 128. All parameters feature fine resolution with 1/36 octave frequency steps, 0.1dB gain increments, and 100 `Q' settings. Any parametric section can also be set to operate as a high or low shelving filter. Each output features a high performance limiter, provided with complete control over attack, release and threshold parameters. To aid set-up, the output meters show headroom to the limiter threshold, and use time constants that track those of the limiter to display precise power usage. Note that only the RS232 and RS485 interfaces offer full remote control of this product ­ the MIDI interface may only be used for memory recall (program change) purposes DP6i Operators Manual Page 7 1 Each output features variable high and low pass filters, with a choice of 12, 18 or 24dB/Octave roll-off, and Butterworth, Bessel or Linkwitz-Riley responses. Independent control of each high and low pass filter allows asymmetric crossover bands to be created. Delay of up to 650mS may be independently set for each output, with an exceptionally fine minimum increment of 2.6µS. The comprehensive standard specification also includes 40 memories, and remote control via MIDI, RS232 or RS485 ports, with security lock-out. AES/EBU Digital input and output interfaces are available as an option. Input and output balancing transformers are also available as an option. A general purpose interface (GPI) is available as a option, allowing simple remote memory recall without the need to connect a PC. Page 8 DP6i Operators Manual Front Panel Familiarisation Select Key: Pressing this key will cycle through the options listed to the right of the key ­ each one will be highlighted in turn, with the LED display showing the value of the parameter. Adjust Keys: Use these keys to alter the value of the parameter currently selected. Note that in certain circumstances, such as where an option is not fitted, (AES or GPI) the value may not be adjustable. LED Display: This display shows, by default, the number of the last recalled memory. If this memory has been edited, the display will show . If a parameter is being adjusted, the yellow LED beside its name will be illuminated, and the current value of it will be shown on the display. 00 Input and Output Metering: Input meters show the headroom available below the clipping point of the analogue to digital converter. They are PREprocessing, so are not affected by the gain controls for the inputs or any applied equalisation. If the unit is clipping internally due to a DSP overflow (too much gain or excessive EQ), both CLIP LEDs on the inputs will illuminate, regardless of the actual input level, or which channel is overloading. Mute Unit Key: Pressing this will instantly mute all the outputs. Note that the metering will continue to register. The state of this mute will be remembered on power down. Note that the remote PC controller has no knowledge of this key, as it is purely a LOCAL mute facility. Output Meters: These show the headroom below limiting for the outputs. Adjusting the limiter threshold will cause the meter reading to change. The red LED illuminates when the level has reached 4dB over the limiter threshold. The ballastics of these meters are affected by the attack and release settings of the limiter. Quick Memory Recall Keys: Pressing one of these keys will immediately recall the relevant memory location. See page 11 for more details of how this works. DP6i Operators Manual Page 9 Rear Panel Connections Power Switch: turns the units mains supply off and on. Mains Fuse: located in a finger-proof holder adjacent to the mains inlet. A spare fuse is also located in this holder. Mains Inlet: connected via a standard IEC socket. External: RS232 standard via a 9 pin D-type connector, for connection to a PC. Data is converted to RS485 standard and relayed to slave units via the RS485 sockets. Midi IN: 5 pin DIN socket. See page 18 for more information. RS485 In-Out: XLR sockets. Used for transmission of remote control data over long distance or multiple unit applications. See page 16 for more information. Audio In-Out: 3 pin XLR sockets are provided for each channel. All are fully balanced, pin 2 hot, 3 cold, 1 screen. Always replace the fuse with the correct type and rating as shown on the rear panel legend. Page 10 DP6i Operators Manual Operating the DP6i Note about operation with WindowsTM software. The following operating information covers setup and control of the DP6i via the front panel controls only. Please consult the manual supplied with this software for information regarding full computer control. Start-up procedure Switching the unit on will cause all the LEDs on the panel to illuminate briefly including the display showing 8.8., following which the software version number will be displayed on the LED display, typically 1.0. There will then be a fade up of the audio over a few seconds which is accompanied by a flashing vv on the display. Preliminary Set-up The procedure below should be followed when first installing a DP6i. Press the SELECT key so the ID NUMBER LED is illuminated and use the ADJUST keys to change the LED display to show . Press the SELECT key once so the INTERFACE LED is illuminated and use the ADJUST keys to change the LED display to show . This will select the RS232 interface and a baud rate of 38000 baud in Master mode. Press the SELECT key 4 more times to cycle past MIDI, AES and GPI, so that all the yellow LEDs are off. 01 00 Now, connect the unit to the computer and start Audiocore ­ please see page 13 for details of the interfaces and which one is best for your application. Quick Memory Recall Keys When the unit is first used, there will be nothing stored in the memories and the quick recall keys will not appear to do anything. Storing settings into either the first four input memory or x-over memory locations (or both) will allow these keys to gain instant access to these configurations. The rules for what is recalled are simple: If you have stored something in input memory number `N' and x-over memory number `N', they will both be recalled when you select `N'. If only an input memory is stored at number `N' it will be recalled on its own, and similarly for the case of only a x-over memory. Pressing the required quick access key will instantly r ...