Telex Pro Audio Group DN3600C Manual de usuario
Operators & Service
Manual
DN3600C
Version 3.0C
TELEX PRO AUDIO GROUP
Klark Teknik Building
Walter Nash Road, Kidderminster
Worcestershire DY11 7HJ
England
Tel: (01562)741515 Fax: (01562)745371
1
CONTENTS
DECLARATION OF CONFORMITY 3
INTRODUCTION 7
INSTALLATION 8
INSTRUMENTFAMILIARISATION 9
GETTING STARTED 10
Q SWITCHING 12
MEMORY OPERATION 13
AUTO EQ 14
AUTO GAIN 17
MASTER/SLAVE OPERATION 18
REFERENCE SECTION:
DETAILS OF OPERATION 20
DEFAULT/START UP 20
FADER ADJUSTMENT 20
GAIN ADJUSTMENT 20
CURVE/FADER 20
MORE EQ 21
A : B : LINK 21
UTILITIES 21
BYPASS AND RESET 21
MORE EQ MENU AND DISPLAY 22
FILTERS 22
A : B : LINK 22
IN/OUT 22
EXIT 22
FILTER ADJUST 23
NOTCH1/2 23
23
BACK 24
UTILITIESMENU 24
AUTO/Q 24
MEMORY 24
MORE... 24
EXIT 24
AUTO/Q MENU 25
AUTO GAIN 25
AUTO EQ 25
Q TYPE 25
EXIT 25
2
MEMORY/LOCKOUT MENU 26
RECALL 26
SAVE 26
LOCK 27
FULL 27
PARTIAL 27
EXIT 27
MORE... MENU 28
SLAVES 28
STAND ALONE 28
ALL 28
SLAVES 1 TO 64 28
MIDI CHAN 29
ADJ. LCD 29
INV LCD 29
FREQUENCY ENCODER 29
LEVEL ENCODER 29
EXIT 29
TECHNICALSPECIFICATION 30
MENU STRUCTURE 31
SERVICEINFORMATION:
FUSESPECIFICATION 34
MIDI CONNECTIONS 34
VOLTAGE CHANGE OVER 34
SCHEMATIC DIAGRAMS 36
3
DECLARATION OF CONFORMITY
The Directive Covered by this Conformity
89/336/EEC Electromagnetic Compatibility Directive, amended by 92/31/EEC & 93/68/EEC.
73/23/EEC Low Voltage Directive, amended by 93/68/EEC.
The Products Covered by this Declaration
Equipment Type Product Name Variants
Graphic Equaliser DN300 DN360, DN301, DN332
Preset Equaliser DN320 DN330
Parametric Equaliser DN405 DN410
Dynamics Processor DN500 DN504, DN510, DN514
Audio Analyser DN6000
Crossover DN800
Delay Line DN7204 DN7103
Programmable Equaliser DN3600 DN3601
Remote Control System DN3698 DN3603
Crossover DN8000
Programmable Equaliser DN4000
The Basis on which Conformity is being Declared
The Products named above and hence the Variants thereof listed above comply with the re-
quirements of the above EU directives by meeting the following standards:
EN 50081-1 (EN55022 class B)
EN 50082-1 (IEC801 Part 2, 4 / ENV 50140 / ENV 50141
EN 60065.
Signed: . .......................... N. G. Tembe
Authority: Head of Engineering, EVI Audio (U.K.) Plc
Date: 1st January 1997
Attention!
The attention of the specifier, purchaser, installer or user is drawn to the special limitations to
use which must be observed when these products are taken into service to maintain compliance
with the above directives. Details of these special measures and limitations to use are available
on request, and are also contained in product manuals.
4
Attention!
Cables:
This product should only be used with high quality, screened twisted pair audio cables, termi-
nated with metal bodied 3-pin XLR connectors. The cable should be connected to pin 1. Any
other cable type or configuration for the audio signals may result in degraded performance due
to electromagnetic interference.
Electric Fields:
Should this product be used in an electromagnetic field that is amplitude modulated by an
audio frequency signal (20Hz to 20KHz), the signal to noise ratio may be degraded. Degrada-
tion of up to 60dB at a frequency corresponding to the modulation signal may be experienced
under extreme conditions (3V/m, 90% modulation).
5
THANK YOU FOR USING THIS KLARK TEKNIK PRODUCT
To obtain maximum performance from this precision electronic product, please study these
instructions carefully. Installation and operating the DN3600 is not complicated, but the
flexibility provided by its operating features merits familiarisation with it's controls and
connections. This unit has been prepared to comply with the power requirements that exist in
your location.
Precautions
Before connecting the unit to the mains power, ensure that the operating voltage is correct for
your local supply. Operating voltage is indicated on the rear panel.
Do not install this unit in a location subjected to excessive heat, dust or mechanical vibrations.
Power Connection
ConnectionismadebymeansofanIECstandardpowersocket.TheunitwilloperateoffanyAC
voltage between 100 Vac and 240 Vac @ 50 Hz to 60Hz.
Beforeconnectingthis unit tothemainssupply,ensure that thefusefittedis the correcttypeand
rating, as indicated on the rear panel, adjacent to the fuse holder.
Safety Warning
This unit is fitted with 3-pin power socket. For safety reasons the earth lead should not be
disconnected. If you encounter a problem with earth-loops, remove the ground-lift link located
inside the unit to isolate the signal earth from the chassis earth (see Service section for details).
This should be carried out by a qualified service technician only.
To prevent shock or fire hazard, do not expose the unit to rain or moisture.
To avoid electrical shock, do not remove covers. Dangerous voltages exist inside. Refer
servicing to qualified personnel only.
6
After you have unpacked the unit
Saveall thepackingmaterials-theywillprove valuableshoulditbecomenecessarytotransport
or ship this product.
Please inspect this unit carefully for any signs of damage incurred during transportation. It has
undergone stringent quality control inspection and tests prior to packing and left the factory in
perfect condition.
If, however, the unit shows any signs of damage, notify the transportation company without
delay. Only you, the consignee, may institute a claim against the carrier for damage during
transportation.
If necessary, contact your supplier or as a last resort, your Klark Teknik importing agent, who
will fully co-operate under such circumstances.
7
INTRODUCTION
Designed to meet and exceed the needs of the recording, broadcast, installation and live sound
industries, the Klark Teknik DN3600 Programmable Graphic Equaliser is an extremely high
quality, digitally controlled, two-channel, third-octave equaliser that combines state-of-the-art
audio performance with unprecedented ease of use. The two channels may either be used
independentlyorlinkedfor stereo use. Tofurtherextendtheflexibility of the equaliser,theunit
also incorporates variable frequency low and high-pass filters, two notch filters with variable
frequency and depth and overall gain adjustment.
Featuring a very large backlit LCD display window, the DN3600 may store up to 66 equaliser
programs and the inclusion of a Pro MIDI interface enables several other DN3600s or DN3601
slaveunits(64maximum)tobecontrolledfromasingleDN3600. Theslaveunitsareelectrically
identical to the DN3600 but have limited control and display facilities. A 16-pin connector is
providedforuseinconjunctionwiththeDN60/DN6000RealTimeSpectrumAnalyserenabling
room analysis and equalisation to be accomplished automatically.
TheproprietaryanaloguefiltersarebasedaroundtheKlarkTeknik“MELT”hybridfiltercircuits
whichofferfargreaterheadroomanddynamicrangethanispossibleusingstandard20-bitlinear,
digital systems. Benefiting from revised circuitry, these filters are exceptionally reliable and
offergreater stabilitythandiscrete designs. Theyarealsorelativelyimmune toelectromagnetic
interference,unlikecoil-basedfilters. Separatesupplyrailsareusedforthedigitalandanalogue
circuitry which, in combination with rigorous internal screening, ensures the cleanest possible
audio signal path.
In order to provide maximum operational flexibility, the system includes a switchable Q mode.
The Low Q setting (Q:360) provides an accurate emulation of the industry-standard DN360
equaliser. In High Q mode (Q:27), the performance emulates the DN27.
To maintain the optimum signal to noise ratio and headroom at all equaliser settings, the gain
control acts on the equaliser sections themselves rather than being a simple pre or post-
equalisation gain stage. Additionally, an Auto gain mode is included in the system which
automaticallyscalesthegainoftheindividualequaliserbandsascutorboostisappliedtoreduce
the risk of accidental clipping and to maintain a safe working headroom.
Both the input and output circuitry is electronically balanced with a nominal operating level of
+4dBu. The output circuitry is based on the Midas XL3 output stage, giving exceptionally high
drive capability. A transformer option is available for both inputs and outputs.
8
In order to make the DN3600 as straightforward to use as a conventional graphic equaliser, the
backlit LCD window provides a ‘virtual’ representation of a conventional graphic equaliser as
well as the settings of the shelving high and low-pass filters and the notch filters. The use of
multi-functionbuttons forregularlyaccessedfunctionshasbeenavoidedtoenabletheunit tobe
adjusted quickly and efficiently while the Curve display function provides the user with a
frequency response display based on the combined operation of the graphic, shelving filters,
notch filters and gain.
Installation
The inputs and outputs are electronically fully balanced on XLR connectors and are wired
conventionally with pin 1 as ground. Because the system is fully floating, either pin 2 or pin 3
can be designated as hot so long as the same protocol is adhered to for both the input and the
output connectors.
The DN3600 is designed for use in both fixed and mobile installations where it can be mounted
in a conventional 19 inch rack occupying just 2U of height. In mobile situations where rough
handlingisapossibility,itisadvisabletosupporttherearoftheunittopreventunduestressbeing
placed on the front panel. Ensure that the unit has sufficient ventilation and that it is not placed
directly over any device which runs hot such as a power amplifier or console power supply.
9
Instrument Familiarisation
Front panel functions
DISPLAY SCREEN: This is a large, backlit "Supertwist"-type LCD which shows white/green
legend on a blue background. Menu options are listed down the left hand end. Various status
informationisshownalongthetopedge. Innormaloperatingmode,thelargestpartofthescreen
displays the "Virtual" graphic equaliser faders for one channel. LCD contrast is adjusted via a
menuoption. See the Adj. LCD section for moredetails. In addition the LCD backlight features
abrightupfeaturewhichincreasestheLCDbacklightbrightnesswhenthecontrolsareoperated.
The bright up period can be set under software control via the Adj. LCD menu from 2 seconds
to 60 seconds.
FREQUENCY BUTTONS: These 30 dedicated keys, each labelled with a separate ISO centre
frequency, are used to select graphic frequency bands and to set low pass, high-pass and notch
filterpositions. A numberofadjacentbandsmaybeselectedbypressingtwokeys eitheratonce
orinquick succession.Theselected ‘fader’or'faders'inthedisplaywindow maybeadjusted by
meansoftheLEVELcontrol. AnalternativemethodoffrequencyselectionistousetheFREQ
rotary control.
FREQ: This rotary control may be used to select any of the equaliser bands for adjustment as
analternativetousingtheFrequencybuttons. Also,anumberofadjacentfadersmaybeselected
by holding a single button until it flashes and then using the FREQ rotary control. The FREQ
rotary control may also be used to set the frequency of Notch filters and of the High pass filter.
LEVEL: Thisrotarycontrolisusedtoadjustthelevelofanyselectedfaders-includingtheGain
fader. Itmay alsobeused tosettheattenuationof theNotchfilters andthefrequencyofthe Low
pass filter.
BUTTONS 1-4: These “soft keys” are used to select and operate the various functions of the
equaliser. Thefunctionsimmediatelyavailabledependonthecurrentoperatingmodeoftheunit.
The current function attached to each key is shown on the LCD display beside it.
CURVE/FADER: This button is used to switch between the virtual fader display and a
composite frequency response curve, calculated from the positions and shapes of all Graphic,
Highpass,LowpassandNotchfiltersandgain control. Thecurvechanges inrealtime withany
adjustments made.
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