D.A.S. DSP-4080, User Manual

Page 1: ...utilizar el equipo lea la sección Precauciones de seguridad de este manual Conserveestemanualparafuturasconsultas Before operating the device please read the Safety precautions section of this manual Retainthismanualforfuturereference ...

Page 2: ...DSP 4080 ...

Page 3: ...eligrosos no aislados Para reducir el riesgo de choque eléctrico no retire la cubierta Aparato de Clase I por tanto debe estar conectado a tierra Safety Precautions Precauciones de Seguridad Keep these instructions Heed all warnings Follow all instructions The exclamation point inside an equilateral triangle indicates the existence of internal components whose substitution may affect safety The ON...

Page 4: ...n en garantía es imprescindible que el producto no haya sido previamente manipulado e incluir una fotocopia de la factura de compra GARANTÍA All D A S products are warrantied against any manufacturing defect for a period of 2 years from date of purchase The warranty excludes damage from incorrect use of the product All warranty repairs must be exclusively undertaken by the factory or any of its au...

Page 5: ...iva RoHS 2002 95 CE Directiva RAEE WEEE 2002 96 CE Y es conforme a las siguientes Normas Armonizadas Europeas In accordance with Harmonized European Norms l l l EN 60065 2002 Audio video and similar electronic apparatus Safety requirements EN 55103 1 1996 Electromagnetic compatibility Product family standard for audio video audio visual and entertainment lighting control apparatus for professional...

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Page 7: ...channels Input ganging and output ganging Memory structure Remote control interface operation AES inputs and outputs AES diagnostics and status information Security and locking Advanced audio features Specifications Quick reference Menu system overview Menu system shortcuts Menus in detail 3 4 5 6 11 12 15 16 18 23 24 25 27 35 36 37 38 39 DSP 4080 User s Manual ...

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Page 9: ... interfaces offer full remote control of this product the GPI interface may only be used for memory recall program change purposes Security lock out is available for all controls The DSP 4080 are also equipped with AES EBU digital inputs and outputs and include a sample rate converter capable of accepting anything from 32kHz up tp 192kHz TM They may be controlled externally by XTA s proprietary Wi...

Page 10: ... sensitive encoders adjust the relevant parameters as displayed on the screen Status LEDs The two status LEDs show from left to right AES inputs selected flashing if not locked and AES outputs selected Input Sections Control and monitor input signal paths Red MUTE buttons illuminate when pressed and mute audio for that channel EDIT buttons illuminate yellow when pressed and access gain on first pr...

Page 11: ...trol data over long distance or multiple unit applications See page 18 for more information 4 Audio Outputs 3 pin XLR sockets are provided for each channel All are fully balanced pin 2 hot 3 cold 1 screen Note the legending on the panel to designate which outputs are used for AES streams when the digital outputs are enabled Please see page 23 for more information 6 Audio Inputs 3 pin XLR sockets a...

Page 12: ...d use the BACK or NEXT key to select Crossover sub menu and then press ENTER Use the BACK or NEXT key to select Design a crossover and then press ENTER Finally use the BACK or NEXT key to select the desired routing and follow the set up wizard to finalise your design Note that when in a menu ENTER is always used to confirm selections The current selection is marked with an asterisk Use the EDIT ke...

Page 13: ...put Channel Makeup The diagram below shows the processing available on each of the four input channels before routing to the matrix Output Channel Makeup The diagram below shows the processing available on each of the eight output channels after routing from the matrix Preset Routing Configurations In addition to the ability to assign any combination of inputs to any output a number of preset conf...

Page 14: ...part of the spectrum Default suggested crossover frequencies are shown by each output 2 x 3 way crossover Inputs A and B feed three outputs each with output 7 being fed from input C and output 8 from input D Note the Aux outputs are set to full range Default suggested crossover frequencies are shown by each output 8 DSP 4080 User s Manual ...

Page 15: ...inputs C D being unused Default suggested crossover frequencies are shown by each output 1 x 8 way crossover Inputs A is fed to all eight outputs with initial settings being all full bandwidth The crossover points can be adjusted as desired 9 DSP 4080 User s Manual ...

Page 16: ...ENTER The EDIT key will illuminate for output 1 as will any relevant input EDIT keys showing which inputs are feeding output 1 The display will also detail the current combination of inputs feeding this output To change the routing for any output press its EDIT key and then choose the required input channel combination by just pressing the input EDIT keys as appropriate The input combinations can ...

Page 17: ...ametric EQ The display shows IPA Input A Gain Input Gain 6 0dB IPA Input A Delay Base Delay 0 00mS IPA Input A PEQ 1 1k00Hz Q 3 0 0 0dB The GAIN allows to change its value Pressing ENTER to confirm Note The delay steps are 1mS 343mm through FREQ or 10uS 4mm through Q encoder There are eight bands of parameter equalisation available on every input The behaviour of each individual band can be change...

Page 18: ...n inverted phase Output delay The maximum available delay between any input and output is 650mS For example if the input delay on channel A is set to 500mS the maximum available output delay for any output fed from input A will be 150mS The readout units can be changed between time in milliseconds distance in feet or distance in metres OP1 Output 1 Delay Delay 0 0000mS Note The delay steps are 1mS...

Page 19: ... Low Freq Overlap will be displayed Note that to access the 48dB Octave filters parametric bands 6 7 need to be bypassed or set to 0dB If they are not the message Bypass PEQ s 6 7 To Access 48dB Slopes will be displayed High Low Freq Overlap will be displayed Note that to access the 48dB Octave filters parametric bands 8 9 need to be bypassed or set to 0dB If they are not the message Bypass PEQ s ...

Page 20: ... be exceeded The release time can be automatically linked to the high pass filter frequency so that it is set to a value appropriate for the output s frequency range If this feature is enabled the display will show Rel Auto in place of the release time Selection of automatic time constants is through the Design a Crossover wizard in the Crossover Sub menu More information about the limiters and th...

Page 21: ...ed and then ganged to 3 Ø Outputs cannot share more than one ganging set so for example output 3 cannot be ganged to 2 and 4 unless they are ganged together as well Effectively 3 and 4 are ganged to 2 in this case With these rules in mind selecting and setting up gangs is quite straightforward Press a MUTE key to choose the output to gang its LED will begin to flash and an EDIT key will illuminate...

Page 22: ...Y Sub Menu and its operation warrants a little more explanation Selecting to STORE or RECALL using the GLOBAL MEMORY Sub Menu option offers the possibility of storing various combinations of the available memory types and these are selected using the BACK and NEXT keys To explain how this all works please consider the following example There are 10 memories stored in the unit with various combinat...

Page 23: ...nge all the parameters Note that storage and erasure of memories does not follow quite the same rules being simpler in its operation Selecting Input and Crossover during a Store will skip any memories that have other combinations in them Selecting Erase for any combination will show only locations that have EXACTLY that combination it is not possible to erase just one part of a combination memory ...

Page 24: ... connected to the computer via this interface Additional units may be daisy chained via the RS485 connections from the back of the first one it acting as a converter for them but their RS232 ports are not used RS232 Connection Single Unit A typical interface set up might involve running an RS232 link from laptop or a desktop computer to a DSP 4080 unit set up as a master unit The diagram below sho...

Page 25: ...via a PC The unit s internal software may be updated via the RS232 port ONLY one unit at a time We recommend disconnecting all other devices when updating the software The unit s interface must be set as RS232 Master on ID1 for the PC loader program to recognise it and allow the update to be sent RS232 Connection Multiple Units If control over multiple units is required typically the slaves will b...

Page 26: ...shielded microphone cables or a balanced feed from a multicore RS485 is a fully balanced system capable of sending data over distances of up to one kilometre Note however that this is the total length of connection The RS485 output of each unit is purely hardwired from the input and so no electrical regeneration of the signal is provided What this means is that the distance from the first RS485 ou...

Page 27: ...5 adapter the XLR to 9 pin adapter and the converter itself This complete kit is part number INT 485 If you need to make up one of the XLR to 9 pin adapters the pin out is XLR D type 1 1 2 3 3 8 DSP 4080 Interface Sub Menu Mode RS485 Mode SERIAL SPEED 115200 Stop MIDI Prog Chng Yes Remote ID Number 1 Additional DSP 4080s may be set up as slaves with incremental ID numbers as necessary OR via wirel...

Page 28: ...t the extra handshake lines used with the standard converter The adapter is available in a kit which includes a USB Serial converter the XLR to 9 pin adapter and the K2 ADE converter itself This complete kit is part number USB 485 DSP 4080 Interface Sub Menu Mode RS232 Mode SERIAL SPEED 115200 Stop MIDI Prog Chng Yes DSP 4080 Interface Sub Menu Mode RS485 Mode SERIAL SPEED 115200 Stop MIDI Prog Ch...

Page 29: ...between input D and output 1 A red LED inside this aperture illuminates to show that the AES digital inputs have been selected A complimentary LED on the front panel also illuminates The switch controls the rear panel LED directly whilst the front panel one is via the processor allowing it to relay a little more information If it is flashing this means that AES inputs have been selected but have n...

Page 30: ...sion and is of no importance to the user Pressing ENTER again will show This display shows the status of the two AES receivers input A on the left and Input C on the right The sample rate the unit has been able to lock to is shown or UNLOCKED will be displayed in its place The unit will lock to sample rates from 32kHz up to and including 192kHz The unit s own processing sample rate is 96kHz and AE...

Page 31: ...Xover Trim Mute As for Xover Trim but additionally output mutes are locked Input mutes remain active Changes Only All parameters may be viewed but none may be adjusted This applies to both inputs and outputs All mutes remain active Changes Views No parameters are accessible in effect the EDIT keys do nothing All mutes remain active Changes Mutes All parameters may be viewed but none may be adjuste...

Page 32: ...omentarily After a few seconds the unit will ask for a security code Use the EDIT keys in the same manner as for entering lock codes see page 25 for details and enter 2121 The display will show Enter XTA Supplied Code Break Code 12345 NNNN The Break Code in the example 12345 should be noted and supplied to DAS We have software to generate the corresponding Pass Code which should be typed in follow...

Page 33: ...ter may sound awful In particular as with all limiters using too fast an attack or release time will result in excessive low frequency distortion In the Design a Crossover sub menu there is an option for automatic limiter time constants Use this option if you are unsure how to set the time constants manually We recommend the use of the automatic setting In this mode the time constants will be auto...

Page 34: ...n turning the signal down will be in the order of several hundred milliseconds at best This will only be true if he is not distracted in reality it may be several seconds before any gain reduction is imposed on the signal to bring it under control For an analogue dynamics processor the situation is much better Controlling the gain electronically and not relying on a human sidechain feedback mechan...

Page 35: ...ve similar results but with the penalty of delaying the main signal by the amount of look ahead delay introduced The D Max limiter which appears in output lists just following the traditional limiter has only two parameters to adjust Op1 Output 1 ClipLim Rel Medium 10dB Above The release time either Fast Medium or Slow and the threshold Note that the threshold is set to be a minimum of 2dB above t...

Page 36: ...he speaker manufacturer s specification Have a release time which is sufficiently long to avoid the limiter itself modulating the program Be intelligent enough to adjust the envelope of the limiter according to the frequency content of the program material The program limiters are capable of performing all these tasks The only parameter that the user must set manually is the threshold and it is cr...

Page 37: ...ssover filter settings Time Alignment A further advantage of the DSP 4080 over conventional products is the provision of an independently adjustable delay section for each output This allows the true arrival time from multiple drivers to precisely aligned rather than relying on the compromise phase adjust approach Delay time is adjustable in 0 3uS steps 0 1mm Please see page 12 for details of how ...

Page 38: ... High Shelf shown InA Input A HSF 1 1k00Hz Q 3 0 0 0dB Remember to change filter types press BYPASS to bypass the filter and then use ENTER to select the filter type The shelving EQ has adjustable frequency Q or Bandwidth and Gain controls These affect a range of frequencies from the turnover freqency as shown in the graph For a high shelf frequencies above the turnover frequency will be affected ...

Page 39: ...o change filter types press BYPASS to bypass the filter and then use ENTER to select the filter type The notch filter has adjustable frequency and Q or Bandwidth controls These affect a range of frequencies symmetrically about the centre freqency as shown in the graph Remember that Q is 1 Bandwidth so the higher the Q the lower the Bandwidth and the smaller the range of frequencies affected The no...

Page 40: ...y 12dB Octave but in achieving this sort of roll off with a high Q value will result in quite a large overshoot in level at the turnover frequency This type of filter is often also called a resonant filter Elliptical filters InA Input A HPF 1 1k00Hz HP Ellip Remember to change filter types press BYPASS to bypass the filter and then use ENTER to select the filter type The elliptical filter has adju...

Page 41: ... 20dBm into 600 ohms MUTE ON OFF Frequency Resp dB 20Hz 20kHz Dyn Range 116dB 20Hz 20k unweighted Distortion 02 1kHz 18dBm Maximum Delay 650 mS Min Step Size 0 3uS Input Gain 6dB to 40dB in 0 1dB steps Output Gain 15dB to 40dB in 0 1dB steps Parametric Equalisation 8 per Input 9 Sections per Output Filter Gain 15dB to 30dB in 0 1dB steps Freq Range 19 7Hz 32kHz 1 36 octave steps Filter Q BW 0 4 to...

Page 42: ... up output ganging INTERFACE Sub menu Comms interface setup RS232 and RS485 G P I interface configuration and wireless interface SYSTEM Sub menu Used to view unit s status and select various global options such as PEQ Q or bandwidth units delay units and output metering point pre post mute SECURITY Sub menu Used for locking various operations of the unit using a 4 digit code AES EBU Sub menu Switc...

Page 43: ...e Dist nce Clip LED Hold Time Set Date Time Below is an overview of the menu system a lot of functions have been assigned menu shortcuts these are accessible directly from the default screen by pressing MENU followed by the appropriate MUTE or EDIT button as shown This table only shows the top level of each menu item some of these will start wizards or access additional functions and these will be...

Page 44: ...dout Delay Units Time Distance Readout AES Input Status Design a Crossover Input Ganging Crossover Output Ganging Input Reset Unit Locking AES Output Mode A lot of functions have been assigned menu shortcuts these are accessible directly from the default screen by pressing MENU followed by the appropriate MUTE or EDIT button as shown The entire list of features accessible in this way is given belo...

Page 45: ... jump through info LCD Contrast Adjust the viewing angle of the screen LED Brightness Adjust the brightness of all the meters and button LEDs Temperature Alarm Set the threshold for the unit to flash a warning temperature message on the screen Wake up Time Adjust the time before the audio fades in on start up can also be set to keep mutes on when powered up Output Meters Opt n Select the monitorin...

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