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LA Audio DPF3103 Operator's Manual

Manual is about: Dual Programmable Graphic, Parametric, Shelving Equaliser and Dynamics Processor

Summary of DPF3103

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    Dpf3103 dual programmable graphic, parametric, shelving equaliser and dynamics processor operators manual version 2.1 january 2001.

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    2 this page left intentionally blank..

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    3 contents 1. Getting started 5-6 2. Installation inspection and unpacking 7 operating environment 7 ce standards 7 power requirements 7 signal levels 8 external connections 8 internal link option 9 3. Warranty 10 4. Description of controls 4.1 memory management 11-13 storing a program 11 naming a p...

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    4 contents 5.3 hi & lo shelving eq 22-23 selecting high or low eq 22 linking channel a & b 23 bypass 23 5.4 compressor/limiter 23-24 selecting channel a & b 23 linking channel a & b 23 selecting & adjusting parameters 25 bypass 25 5.5 expander/gate 24-25 selecting channel a & b 25 linking channel a ...

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    5 1.0 getting started the dpf3103 digeq master is a dual channel digital processor that provides 31 band graphic equalisation, 3 band parametric equalisation, variable high and low pass filters, shelving eq, gating and compression/limiting. Rta and digital delay are options. The unit is easy to use ...

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    6 1.0 getting started please note that there are three separate gain controls associated with the graphic, parametric and dynamics sections. Their operation should be thought of as similar to gain controls on three separate processing units, with the purpose of maintaining a unity signal level throu...

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    7 2.0 installation please read this section before using the dpf3103. 2.1 inspection and unpacking the dpf3103 has been carefully packed at our factory in a carton designed to withstand handling in transit. Should the unit appear to have been damaged in transit, notify your dealer immediately and do...

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    8 2.0 installation 2.5 signal levels the dpf3103 has been optimised for +4dbu input and output levels. The adjustable gain range will allow other signal levels to be used but the noise, distortion and headroom performance may change from those quoted in the specifications section. Signals in excess ...

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    9 2.0 installation 2.7 internal link option the outputs on the dpf3130 have power relays for soft switching and automatic bypass in the event of a power failure. However these relays can be configured, by way of internal jumpers, to mute the outputs rather than bypass - jumper links fitted for power...

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    10 3.0 warranty your la audio dpf3103 has been manufactured to a high standard using quality components. If correctly installed and operated the unit should give years of problem free operation. However in the event of a defect in material or workmanship causing failure of the unit within 1 year of ...

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    11 4.0 description of controls 4.1 memory management the memory system of the dpf3103 is arranged into four main areas - 1. Scratch pad - the working area where all editing is done 2. Program - used to store up to 99 dpf3103 set-ups. Each program memory location stores data for a complete set-up i.E...

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    12 4.0 description of controls the name can be viewed in the save, recall and compare menus and on the home page. • press escape repeatedly until you get to home page. Home page screen. • press enter, cursor flashes under the first character. • use the data wheel (data mode) to select a character, w...

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    13 4.0 description of controls a copy of the recalled program is now in the scratch pad and can be edited if required. If you have made any changes to the current program the word edit appears above the program window. If you now attempt to recall a program a dialogue shows 'current edit is not save...

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    14 4.0 description of controls 4.2 direct access selecting channels for editing the dpf3103 is a dual channel unit which can be used as two separate processors or linked for stereo operation. When linked all adjustments are made equally to both channels. Some of the processors e.G. Graphic eq allow ...

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    15 4.0 description of controls shelving eq in shelving mode the two (blue) buttons at either end give access to frequecy (high & low) and gain (cut or boost). Gain: graphic pre-eq gain adjustment with ±20db range parametric pre-eq gain adjustment with ±20db range dynamics gain-make-up adjustment for...

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    16 4.0 description of controls parameter modes or use the buttons. Changes are made using the data wheel . It should be noted that ultility affects both channels whether linked or not. Meter mode select between input or output level, vu or peak reading meter response. Midi channel used with an exter...

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    17 4.0 description of controls rta this will only function if the optional real time analyser card is fitted. See section 9. Delay/range: delay • press once to display the delay menu. The menu is only shown if the delay option is fitted. Range • used in conjunction with the optional rta module. The ...

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    18 4.0 description of controls 4.3 displays clip: these light at 16dbu clipping and provide a visual indication of high signal levels. Please note that with the level meters set to vu mode the clip indicators will light before the +12db led on the meters for fast transient signals. Level meters: a v...

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    19 5.0 description of main functions 5.1 graphic equaliser the dual 31 band equaliser has standard iso centre frequencies, 2/3rd octave bandwidth and 15db cut or boost. Each of the available frequencies has a dedicated select button below the main display. A pre eq (input) gain control with ±15db ra...

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    20 5.0 description of main functions adjusting individual frequencies: • press one of the frequency buttons below the screen. A cursor is shown at the bottom of the selected fader and its gain and frequency values are displayed at the top of the screen. • adjust the gain of the selected frequency wi...

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    21 5.0 description of main functions selecting channel a & b: to edit channel a or b press it's associated channel select button. Linking channel a & b: • press and hold channel select a • press channel select b and release both buttons together. Or vice-versa. Unlike the graphic you cannot set diff...

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    22 5.0 description of main functions bandwidth press bw on band 1, 2 or 3. Data wheel defaults to bandwidth adjust (data) mode. Available bandwidths are 1/32, 1/24, 1/16, 1/10, 1/8, 1/6, 1/4, 1/3, 1/2, 1, 1.4 and 2 octaves. High and low pass filters the two buttons at either end of the frequency sel...

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    23 5.0 description of main functions high & low • press high or low to adjust the shelving frequency. The data wheel defaults to frequency adjust (data) mode. Linking: linking is the same as the parametric eq. Bypass: bypass operates on the selected channel/s and only affects the shelving eq. 5.4 co...

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    24 5.0 description of main functions • press channel select b. • release both channel select buttons together and they will be linked. You can of course use the compressor/limiter for stereo without linking channels bearing in mind that the overall gain for each channel must also be adjusted separat...

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    25 5.0 description of main functions selecting channel a & b: channel selection is similar to the compressor/limiter, please refer to section 5.4. Linking channel a & b: linking is similar to the compressor/limiter, please refer to section 5.4. Selecting & adjusting parameters: select the parameter ...

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    26 6.0 back-up battery program and system data is stored in battery backed ram (random access memory). The battery is only used when the unit is not powered and life expectancy is around 5 years. If the low battery warning is displayed you should replace the battery as soon as possible to ensure you...

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    27 7.0 software replacement before you start: the dpf3103 contains dangerous voltages so ensure you disconnect the mains supply the unit uses static sensitive devices so ensure you understand and implement electro-static-discharge (esd) precautions do not touch the components on any of the printed c...

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    28 • to remove u34, use a plcc extractor tool. If one is not available, use a small screwdriver inserted into the corner slots of the plcc socket. Lever each corner a small amount in turn until the ic comes free. Take care not to lift one corner too much as this can bend the electrical contacts. • i...

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    29 8.0 delay option the delay option for the dpf3103 provides up to 1.36 seconds (65,599 samples) of delay with on-screen readouts in number of samples, time, distance in feet and metres and number of frames (for film work). There is also provision for entering ambient temperature. The delay softwar...

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    30 8.0 delay option wheel . Alternatively you can use the data wheel to both select parameters and adjust values. • ms and samples • feet and metres • °c and °f bypass: bypass operates on the selected channel/s. 8.2 fitting the delay boards before you start: the dpf3103 contains dangerous voltages s...

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    31 8.0 delay option diagram showing position of delay modules..

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    32 9.0 real time analyser option the real time analyser (rta) option for the digeq is a plug-in dsp module which provides a filter based, 31 band analyser as defined in en60651 for sound level meters. An rta based on filters rather than fast-fourier-transform (fft), as used in the vast majority of a...

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    33 9.0 real time analyser option noise switches the noise output level between mic (-55dbu) and line level (0dbu). 9.2 operating the rta the rta is operated through four main menus which are accessed using the rta button - • press the rta button once to select analyser • press rta button again to se...

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    34 9.0 real time analyser option reference reference is used to shift the centre reference of the display i.E. To bring the measured values into range. Reference can be adjusted in 10db steps with the current value shown to the left of the display and on the top line. The actual function of the refe...

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    35 9.0 real time analyser option release this parameter changes the release time of the display for both the analyser and correction screens. Peak release times can be varied from 1.5s to 10s and 125ms to 1s for the average readout. Preamp with this parameter selected use the data wheel to adjust th...

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    36 9.0 real time analyser option flat/reference: pressing flat returns all faders to their default position i.E. 0db, sensitivity is not affected. Sens: microphone sensitivity is accessed using the gain button. Use the data wheel to adjust sensitivity between 0 to 100mv/pa in 0.1 mv/pa steps. Select...

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    37 9.0 real time analyser option if you wish to name the stored curve do this before store. See section 4.1, naming a program for details. The 'rta curve' name is shown above the 'edited program' name on the home page. When you have named a curve in the home page and pressed escape you will be retur...

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    38 9.0 real time analyser option channel a and b if both channel a and channel b are selected then a 'virtual equaliser' is superimposed onto the rta display. This 'virtual equaliser' consists the 31 frequency faders and the gain fader which default to the flat position. The 'virtual' faders show th...

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    39 fixings for the rta module. 10.0 digital i/o option the digital i/o module provides the dpf3103 with 24 bit aes/ebu and s/p dif format digital inputs and outputs. With this module fitted the dpf3103 can have either analogue or digital inputs, however both analogue and digital outputs are availabl...

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    40 10.1 external connections output aes/ebu format balanced digital output on 3 pin xlr (male). Input aes/ebu standard format balanced digital input on 3 pin xlr (female). S/p dif in sony/phillips format digital input on rca phono connector. S/p dif out sony/phillips format digital output on rca pho...

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    41 10.0 digital i/o option digital input selects between either analogue or digital inputs. Digital output sr: use to select the digital output sample rate. Choices are - 1. Fixed sample rates of 44.1khz, 48khz or 96khz 2. Synchronising the output sample rate to an external word clock 3. Synchronisi...

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    42 10.0 digital i/o option • remove the two m3 screws and nyloc nuts securing the blanking plate • fit the nut and washer supplied to the bnc ‘word clock’ connector. • plug the flying lead connector into j16 'aes option' • with the component side of the digital module facing down locate the connecto...

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    43 10.0 digital i/o option • from the rear of the unit fit four m2.5 x 8 pan head screws to position 'c' (input and output xlrs) and the no. 4 self tap screw to position 'd' (s/p dif connectors). • secure the ‘word clock’ bnc connector with the nut supplied. • replace the cover, plug in the mains ca...

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    44 11.0 specifications 11.1 dpf3103 performance frequency response 10hz to 20khz ±0.5db input impedance 10k ohm balanced, 3 pin xlr-f output impedance max input level +20dbu max output level +20dbu nominal level 0bu dynamic range analogue 95db digital 120db total harmonic distortion latency time 1.3...

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    45 11.0 specifications expander/noise gate knee hard or soft threshold -60db to 0db ratio 1:2, 1:3, 1:4, 1:6, 1:8, 1:16, gate attack time 20µs to 100ms release 50ms to 5s interfaces midi program change, sysex or digeq network power power requirement 30va @ 90-250vac, 50-60hz connectors analogue inpu...

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    46 11.0 specifications 11.4 digital i/o format aes/ebu and s/p-dif word size 24 bit sample rate 44.1khz, 48khz and 96khz compatible inputs & outputs aes/ebu - 3 pin xlr s/p-dif - phono word clock input bnc.