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DD-8 Operating Manual

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2. Ds These LEDs are arranged in two series strings of four and are driven via 20mA current sink transistors Q2 and Q3 The use of current sinks ensures power supply voltage fluctuations do not affect the opto drive current The receiver output also drives the signal indicator LED L2 via positive edge detector network C8 R26 R8 D3 transistor driver Q1 and pulse lengthener C5 This circuit will respond to signals with high repetition rates and may light in the presence of non DMX signals Eight identical output circuits drive the DMX outputs The opto transistor and pull up resistor R9 etc drive the DMX line driver directly The line driver output is protected by PTC3 PTC4 MOV3 MOV4 etc The output shields are tied hard to the DD 8 chassis The DD 8 uses a custom wound toroidal power transformer with nine separate but identical secondary windings Each winding is used to provide an isolated linear power supply for one of the output circuits or the input circuit A polyswitch protects each output from local overloads The primary of the transformer is wound with a combined 240 110V winding and the orientation of the mains fuse determines which winding is connected to the mains input Note that when the mains voltage is changed a fuse with the correct rating must be used Revision 2 0 5 July 1998 8 OPERATING MANUAL E r Aqumeiq gZ Jo I PNS 0007 ARIA S 2wa TSONTASPA SPAN H 204 6060 2856 Z0 Ud ENIVH SUOIS
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4. JANDS DD 8 Opto isolated DMX Splitter Operating Manual Version 2 0 JANDS DD 8 DMX SPLITTER EMC COMPLIANCE This product is approved for use in Europe and Australia New Zealand and conforms to the following standards Standards To ensure continued compliance with EMC Directive 89 336 and the Australian Radiocommunications Act 1992 use only high quality data cables with continuous shield and connectors with conductive backshells Examples of such cables are DMX Belden 8102 100 Aluminium foil screen 65 Copper braid O JANDS ELECTRONICS PTY LTD 1997 All rights reserved DISCLAIMER Information contained in this manual is subject to change without notice and does not represent a commitment on the part of the vendor JANDS ELECTRONICS P L shall not be liable for any loss or damage whatsoever arising from the use of information or any error contained in this manual It is recommended that all service and repairs on this product be carried out by JANDS ELECTRONICS P L or it s authorised service agents JANDS lighting products must only be used for the purpose they were intended by the manufacturer and in conjunction with the user manual JANDS ELECTRONICS P L cannot accept any liability whatsoever for any loss or damage caused by service maintenance or repair by unauthorised personnel or by use other than that intended by the manufacturer Manufactured in Australia by JANDS ELECTRONICS PTY LTD AC
5. N 001 187 837 40 KENT RD LOCKED BAG 15 MASCOT NSW 1460 AUSTRALIA PHONE 61 2 9582 0909 FAX 61 2 9582 0999 EMAIL Internet jandsinfo jands com au Revision 2 0 5 July 1998 225 OPERATING MANUAL JANDS DD 8 DMX SPLITTER Table of Contents Table of Kotletten 3 1 0 Introduction U 4 2 0 Equipment Description 5 Zl Physical layata anay suaiun ahipa yC uwihapa apaspa toate 5 3 0 Getting Started Qu aiaa iaaa niaaa a naaa AA sassa aassaaaausassssasassa 6 Sol Setting the input Volar E A ae 6 3 2 C nnecting WO EE 6 3 3 COMME CUMS DMX 512 1 Input choc ici iaa castilla nicas 6 3 4 Connecting DMX 512 outputs r 6 Jo PowerUp SegUen68e onun au a S sea ene ae ea eee ene ees 6 4 0 Operating Notes AA LLL sss seen 7 5 0 Technical Aepepte see 8 5 1 Circuit RT EE 8 S 2 Ral name Table u anun aa AA AA 11 5 3 Miscellaneous NotesSession Gak yas sasi qasaqa 11 ANE EE de DEE 12 TO MADONNA IILI I UU aaan 12 8 0 Technical Specifications 13 Appendix A Connector Pinouts 1 14 Revision 2 0 5 July 1998 3 OPERATING MANUAL JANDS DD 8 DMX SPLITTER 1 0 Introduction The JANDS DD 8 is a high quality 8 channel opto isolating data splitter specifically designed for dist
6. SITIO LEDEEDGTI STO TZ LIO ELO 6 TASTA PIA ETA TTA TTA OTA 6A spouueyo gx 9 91S INOW W E SS e e Dee s T 1 Cemas STNOW STNOW ETNO 8d0 Z qD z9d0 8191d D d x Ke D NI D 131d kino N Wald 5 F e Z 191d ZINOW NOW Said Heng oTo nou Jd sJId sno Snow Sid 2313 SNOW NOW aid JId NOW Se Zold k E O ol 191g o e EH bDLdO EDIdO Z01dD 101dD s H za TT D o O Oo gt DCH INNOD 1938 OP4 AC OP3 AC OP2 AC DP1 AC OQ OP8 AC OP7 AC OP6 AC OPS AC 89d E0XWO Y3lLIIdS AUMB XWA SONN y PHR SIG SIG F 7 O Ee JANDS DD 8 DMX SPLITTER 5 2 Fault Finding Table Fault Symptom Possible Cause No power indication Blown Fuse Replace fuse Mains disconnected Reconnect Ambient temperature too high Reduce ambient temperature No DMX signal indication Input cable fault Replace cable OOOO lee Je No DMX output One output Faulty output cabling Replace cable Faulty receiving equipment Replace faulty receiver Control channels incorrect Check source patch settings Check receiver address settings Ambient temperature too high Reduce ambient temperature Faulty DD 8 output Swap cabling to another output No DMX output All outputs Faulty input cabling Replace cable DMX source fault Repair source Ambient temperature too high Reduce ambient temperature Control channels incorrect Check so
7. cess required to replace mains fuse RS OPERATING MANUAL JANDS DD 8 DMX SPLITTER Appendix A Connector Pinouts DMX connector pin outs PIN CONNECTION CONNECTION No DMX IN DMX OUTPUT RC NETWORK TO CHASSIS CHASSIS IN OUT IN OUT NC NC NC NC 5 1 O O 4 3 2 O O OUTPUT DMX CONNECTOR ROW 1 O 2 3 O 5 9 INPUT DMX CONNECTOR w MANUAL ENDS gweg Revision 2 0 5 July 1998 15 OPERATING MANUAL JANDS DD 8 DMX SPLITTER 40 KENT RD MASCOT NSW 2020 PH 61 2 9582 0909 FAX 61 2 9582 0999 email jandsinfo jands com au Revision 2 0 5 July 1998 16 OPERATING MANUAL
8. ftpatches and finally to the dimmers or fixtures The DD 8 should be powered up in its appropriate position in the system This procedure minimises the risk of producing the lighting equivalent of an audio thump and prevents damage to lamps dimmers and other controlled devices Use the reverse procedure when powering down Revision 2 0 5 July 1998 6 OPERATING MANUAL JANDS DD 8 DMX SPLITTER 4 0 Operating Notes A DD 8 should be connected where its fault protection isolation or fan out capability can be most effective See Figure 4 1 below Suggested positions include 1 Between pieces of equipment that run from different power sources Examples of different power sources include e Stadium type shows where the dimmers are distributed in groups around the stadium and each group is run from a local sub board transformer or sub station In this case a separate DD 8 output should be used to drive separate dimmer groups via individual cables If this is not practical then a DD 8 should be placed at each dimmer group to isolate that group e Outdoor shows where the console is run from a different power supply to the dimmers In this case the DD 8 should be placed just before the input to the first receiving device on the line At the input to a multi piece equipment rack If it is necessary to have complete protection and isolation in a system then each receiving device must be connected to an individual DD 8 outpu
9. he correct way up indicates which input voltage is selected To change the input voltage lever out the fuse holder with a flat blade screw driver and rotate it 180 degrees Swap the fuses and re insert the fuse holder Note that the fuse holder is permanently attached to the socket assembly and can only be removed about 20mm Note also that the rating of the fuse must be changed to match the input voltage Refer to the specifications for the correct fuse rating Connecting power Connect a standard IEC plug and cable to the DD 8 inlet socket When power is applied the red POWER LED will light NOTE The DD 8 must be connected to a 3 pin earthed power source Use of 2 pin non earthed power sources will reduce the ability of the DD 8 to protect against high voltage shield faults Connecting DMX 512 input The DD 8 input signal should conform to the USITT DMX 512 1990 specification The DMX 512 input connects to the INPUT socket on the front panel The green DMX LED will light if there is signal present See Appendix A for connector wiring details Connecting DMX 512 outputs The DD 8 output signals are an amplified copy of the input signal Connect the outputs to the DMX 512 receiving devices as required See Appendix A for connector wiring details Power up sequence When powering up a system should be powered up in the order it appears in the DMX 512 system starting from the console and proceeding to any splitters or so
10. mounted in the same rack No rear mounting is necessary due to the low weight of the unit 7 0 Maintenance WARNING DO NOT ALLOW THE ENTRY OF LIQUIDS OF ANY SORT INTO THE DD 8 With care the DD 8 will require little maintenance If the lexan panels require cleaning wipe with a mild detergent on a damp soft cloth DO NOT spray liquids onto the panels DO NOT use solvents for cleaning the panels Revision 2 0 5 July 1998 13 OPERATING MANUAL JANDS DD 8 DMX SPLITTER 8 0 Technical Specifications JANDS DD 8 DMX SPLITTER Mains Supply Fuse Power consumption Operating Temperature Inputs DMX Termination Outputs Isolation input to any output Isolation between outputs Protection between input pins Protection from input to earth Protection between output pins Protection from output to earth Construction Dimensions Weight Physical protection rating Rack mounting requirements Revision 2 0 5 July 1998 SPECIFICATIONS 90 130V AC 190 265V AC 47 53Hz fully earthed 110V 1A 240V 0 5A M205 delay type 50VA maximum 45 C maximum ambient 1 100 Ohm 8 500VAC 500VAC 250VAC 250VAC 250VAC 250VAC Zinc plated all steel chassis D 120mm W 480mm H 44mm 3kg IP20 1 x 19 rack space standard spacing for mounting holes No ventilation requirements No blank spaces required between units Power inlet at rear left looking from front of unit Power ac
11. ributing one DMX 512 input signal to eight destinations It is designed to perform two functions to isolate faults and to provide signal amplification where long cable runs are used When a fault occurs it is possible to get high voltages in the DMX cabling Such voltages can propagate along the cable and damage all equipment connected to that cable The DD 8 is designed to sever the physical link between elements of the DMX system thereby isolating faults on one line from the rest of the system The DD 8 is fully protected against internal damage from most such faults Since these faults can occur in all systems the DD 8 is equally suitable for all touring theatre exhibition and trade show applications In addition including the DD 8 in a DMX system makes fault finding relatively simple The DD 8 can also be used as a signal amplifier where extremely long cable runs are necessary or can be used to drive more than the normal maximum of 32 devices from a console It is recommended a DD 8 be used to isolate DMX segments that run to equipment that is powered from different supplies Outdoor systems where the console runs from a separate supply to the dimmers are an example of such systems The DD 8 is designed to run from most mains power systems It will accept an input voltage from 90 to 130V or 190 to 265V The input voltage is set by the user at the back panel The DD 8 is packaged in an all steel enclosure and is designed to mount in a
12. standard 19 inch rack The DD 8 occupies one rack space Revision 2 0 5 July 1998 4 OPERATING MANUAL JANDS DD 8 DMX SPLITTER 2 0 Equipment Description Z FRONT PANEL 8 O DMX 6 d D o d d aro POWER JOE WW Z ses JANDS 000 ARANA NANA S O O O c VOLTAGE SELECP O sanos O 6 BACK PANEL S 2 2 1 Physical layout 1 DMX Input A standard 5 pin male AXR connector for DMX 512 signal input 2 DMX LED This indicator shows the presence of DMX signal 3 Power LED This indicator shows when mains power is applied to the DD 8 4 DMX Outputs A standard 5 pin AXR connector outputs opto isolated DMX 512 signal to the DMX 512 receivers The same signal appears on all eight outputs 5 Power input An IEC type inlet socket connects mains power to the DD 8 6 Fuse The position of the fuse holder selects the mains input voltage Refer to Section 3 for details on setting the correct mains input voltage Revision 2 0 5 July 1998 5 OPERATING MANUAL 3 0 3 1 3 2 3 5 JANDS DD 8 DMX SPLITTER Getting Started Setting the input voltage Before applying any power it is important that the DD 8 be configured to match the incoming mains voltage The fuse holder is marked with both 240V and 110V markings the label that is t
13. t If 12 channel dimmers in racks of six are used then one DD 8 per rack could isolate all of the dimmer inputs provide an isolated output for the next rack s DD 8 and still have one spare output To drive a DMX 512 control signal in multiple directions from a centre hub point A DD 8 mounted in a truss can be used to provide drive signals for moving lights in separate segments of the truss LIGHTING CUNTR CONSOLE DMX 512 JANDS DD 8 SPLITTER MOVING LIGHTS MOVING LIGHTS COLOUR SCROLLERS COLOUR SCROLLERS DIMMER RACK DIMMER RACK DIGITAL DEMUX DIGITAL DEMUX Revision 2 0 5 July 1998 DMX 512 CONTROLLED DEVICES Fig 4 1 Typical JANDS DD 8 system configuration SZ OPERATING MANUAL JANDS DD 8 DMX SPLITTER 5 0Technical Aspects 5 1 Circuit Description The DD 8 copies the incoming DMX 512 signal into eight identical opto isolated outputs A separate power supply is provided for the input and each output to maintain complete isolation Refer to Figure 2 1 over The input signal is received by a standard RS485 line receiver IC1 via protection components PTC1 PTC2 MOV1 MOV2 Note the input shield is lifted from chassis via a parallel RC network R1 C1 R4 terminates the incoming DMX line The output of IC1 drives the opto isolator LE
14. urce patch settings Check receiver address settings 5 3 Miscellaneous Notes e The protection circuitry will protect the DD 8 DMX line receiver drivers against damage from most faults However it is possible that extremely high fault voltages or spikes may damage the circuitry If damage does occur it is important to re route or repair the DMX cables as appropriate before re powering the unit Note that the protection circuitry may take up to a minute to reset after a fault has occurred e The internal linear power supplies are protected from faults by polyswitches These devices become more sensitive to overload at elevated temperatures and when tripped the unit should be switched off to enable them to reset Allow one minute for these devices to reset once the power has been removed e The DD 8 must be connected to a 3 pin earthed power source Use of two pin power sources will reduce the ability of the DD 8 to protect against high voltage shield faults Revision 2 0 5 July 1998 12 OPERATING MANUAL 6 0 JANDS DD 8 DMX SPLITTER Installation The DD 8 is designed for mounting in standard 19 inch equipment racks Adequate ventilation should be provided around the top of the chassis however no blank spaces are required above or below the DD 8 specifically for ventilation of this device Note that such spaces may be necessary to prevent the ambient temperature from rising above the maximum if other heat producing devices are

DD-8 Operating Manual

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