User Manual - IRT Communications
Contents
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3. Dimensions Standard accessories Optional accessories Technical Specifications DVA 3007 1 75 Q gt 20 dB 5 MHz to 270 MHz 515 dB with optional ZVA 3006RL bypass rear assembly Automatic better than 250 metres at 270 Mb s for Belden 8281 or equivalent cable reduces to 200m when LK2 is closed 8 ASI or SDI plus one front panel monitoring output Reclocked 800 mV 10 into 75 Q 75 220 dB 5 MHz to 270 MHz 515 dB with optional ZVA 3006RL bypass rear assembly Nil Factory set for 270 Mb s operation lt 1 0 ns 700 ps typically lt 0 1 UI measured with up to 300m of Belden 8281 or equivalent cable BNC 75 Ohms LED green for 5 V LED green when valid ASI SDI signal present Contact closure Link selectable NO NC 28 Vac CT 14 0 14 or 16 Vdc 2 5 VA including ZVA 3006RL optional rear assembly 0 50 C ambient Suitable for mounting in IRT 19 rack chassis with input output and power connections on the rear panel Grey background black lettering amp red IRT logo Detachable silk screened PCB with direct mount connectors to Eurocard and external signals 6 HP x 3 Ux 220 mm IRT Eurocard Rear connector assembly with matching connector for alarm output ZVA 3006RL relay bypass rear assembly 6 Due to our policy of continuing development these specifications are subject to change without notice 3007 dva ib doc Page 4 of 9 26 02 2003 Technical Description The
4. input circuit of the DVA 3007 consists of an adaptive cable equaliser IC which automatically adapts to equalise any cable length from zero metres to lengths that attenuate the signal by 40 dB at 200 MHz This corresponds to 300 metres of Belden 8281 cable When link LK2 is closed equalisation is reduced to 200m for use in noisy environments or when a short cable is used A carrier detect and output mute circuit is used to mute the output when no signal is present The DVA 3007 is insensitive to the pathological patterns that can be present in the serial digital video signal The DVA 3007 also features an OUTPUT MONITOR point on the front panel The output monitor is an isolated copy of the signal present at the rear panel outputs The output of the input stage is coupled to reclocking circuit which then feeds cable driver circuits to provide the eight isolated in phase outputs from the DVA 3007 The input cable equaliser circuit U1 and reclocking circuit U2 incorporate carrier detection circuits to mute the output when no signal is applied to the unit The carrier detect signal and lock signal of U2 are used to energise relay via a transistor Q1 when locked carrier is present The relay contacts are connected to SK10 on the rear panel to give a failure alarm in the form of a make or break to ground on failure as set by a link LK1 on the circuit board The dual AC inputs are rectified and then regulated by a switch mode regulator circuit t
5. IR T Electronics Pty Ltd 35 000 832 575 26 Hotham Parade ARTARMON N S W 2064 AUSTRALIA National Phone 02 9439 3744 Fax 02 9439 7439 International 61 2 9439 3744 61 2 9439 7439 Email sales irtelectronics com Web __www irtelectronics com IRT Eurocard Type DVA 3007 270 Mb s ASI SDI 8 O P Reclocking Distribution Amplifier Designed and manufactured in Australia IRT can be found on the Internet at http www irtelectronics com 3007 dva ib doc Page of 9 26 02 2003 DVA 3007 270 Mb s ASI SDI 8 O P Reclocking Distribution Amplifier Instruction Manual Table of Contents Section Operational safety Description Specifications Technical Description Installation Front amp rear panel connector diagrams Maintenance amp storage Warranty and service Equipment return Drawing index This instruction manual applies to DVA 3007 later than S N 0304001 Operational Safety Operation of electronic equipment involves the use of voltages and currents that may be dangerous to human life Note that under certain conditions dangerous potentials may exist in some circuits when power controls are in the OFF position WARNING Maintenance personnel should observe all safety regulations Do not make any adjustments inside equipment with power ON unless proper precautions are observed All internal adjustments should only be made by suitably qualified personnel All operational adjustments are available externa
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7. and not the previous ASI SDI distribution amplifiers DVA 3001 to DVA 3005 3007 dva ib doc Page 7 of 9 26 02 2003 Maintenance amp storage Maintenance No regular maintenance is required Care however should be taken to ensure that all connectors are kept clean and free from contamination of any kind This is especially important in fibre optic equipment where cleanliness of optical connections is critical to performance Storage If the equipment is not to be used for an extended period it is recommended the whole unit be placed in a sealed plastic bag to prevent dust contamination In areas of high humidity a suitably sized bag of silica gel should be included to deter corrosion Where individual circuit cards are stored they should be placed in antistatic bags Proper antistatic procedures should be followed when inserting or removing cards from these bags Warranty amp service Equipment is covered by a limited warranty period of three years from date of first delivery unless contrary conditions apply under a particular contract of supply For situations when No Fault Found for repairs a minimum charge of 4100 00 will apply whether the equipment is within the warranty period or not Equipment warranty is limited to faults attributable to defects in original design or manufacture Warranty on components shall be extended by IRT only to the extent obtainable from the component supplier Equipment return Before arra
8. lly without the need for removing covers or use of extender cards 3007 dva ib doc Page 2 of 9 52 26 02 2003 Description BLOCK DIAGRAM DVA 3007 SIGNAL PATH fo aera een OUTPUTS Optional ZDA 3006RL Bypass Rear re Assembly L gt 0 l Number of outputs reduced to 6 T gt oP2 gt oP 3 a gt OIP 4 RECLOCKING Cc os EQUALISER F SIGNAL FAIL OR DETECTION 0 oP 6 9 OIP 7 0 OP 8 l 0 MON LINK RL 1 RLI ALARM Relay RL 1 Output Alarm The DVA 3007 270 Mb s serial digital video distribution amplifier provides the user with a single standard module to cover a wide range of distribution and monitoring functions for SDI or ASI signals Due to the fact that standard loop through techniques used in the analogue domain are unsuitable to the digital domain most digital equipment comes with no facility to route the input signal to other locations As a result a VDA is required at almost every point in the digital chain Serial digital signals also suffer severe deterioration over relatively short cable distances The DVA 3007 provides a means of extending the working distances that can be achieved by equalising reclocking and re transmitting the data mid route Where a large number
9. nging service ensure that the fault is in the unit to be serviced and not in associated equipment If possible confirm this by substitution Before returning equipment contact should be made with IRT or your local agent to determine whether the equipment can be serviced in the field or should be returned for repair The equipment should be properly packed for return observing antistatic procedures The following information should accompany the unit to be returned A fault report should be included indicating the nature of the fault The operating conditions under which the fault initially occurred Any additional information which may be of assistance in fault location and remedy A contact name and telephone and fax numbers Details of payment method for items not covered by warranty Full return address For situations when No Fault Found for repairs a minimum charge of A100 00 will apply whether the equipment is within the warranty period or not Please note that all freight charges are the responsibility of the customer The equipment should be returned to the agent who originally supplied the equipment or where this is not possible to IRT direct as follows Equipment Service IRT Electronics Pty Ltd 26 Hotham Parade ARTARMON N S W 2064 AUSTRALIA Phone 61 2 9439 3744 Fax 61 2 9439 7439 Email service irtelectronics com 3007 dva ib doc Page 8 of 9 26 02 2003 Drawing Index Note Component
10. o provide the 5V operating voltage for the unit 5Vdc is fed to pin 32a of the rear Euro connector via a polyfuse JP2 The 5V is to provide power for a signal bypass relay on the optional ZVA 3006RL bypass rear assembly should one be used The polyfuse protects the 5V power rail by going high impedance should pin 32a be shorted to ground This protects against the accidental insertion of the DVA 3007 in anything other than its standard rear assembly or the optional ZVA 3006RL rear assembly Installation Handling The DVA 3007 contains static sensitive devices and proper static free handling precautions should be observed When individual modules are stored they should be placed in antistatic bags and proper antistatic procedures should be followed when inserting and removing cards from these bags Power Ensure that the voltage selection of the IRT mounting frame used to house the DVA 3007 and the local AC mains supply voltage match and that the correct rating fuse is installed in the mounting frame power supply Earthing Chassis earth connection of the equipment mounting frame is via the earth connection on the three pin IEC AC mains supply inlet This is a safety earth and must be connected Installation in frame or chassis See details in separate manual for selected frame type is factory set for a contact make to ground on signal failure at SK10 pin 2 on the rear panel move LK1 from the normally closed N C t
11. o the normally open N O position for a break to ground on signal or power loss Link LK2 closed reduces the input equalisation to 200m for use in noisy environments or when a short input cable is used The presence of 270 Mb s locked signal is indicated by the SIGNAL PRESENT front panel LED green The presence of the internal 5 Vdc supply is indicated by the front panel LED green 3007 dva ib doc Page 5 of 9 26 02 2003 It is recommended that unused outputs on the rear panel be terminated with 75 ohm termination plugs 3007 dva ib doc Page 6 of 9 26 02 2003 Front amp rear panel connector diagrams The following front panel and rear assembly drawings are not to scale and are intended to show relative positions of connectors indicators and controls only Optional bypass relay rear assembly RT O RT O zvase 8 O P ASI SDI D A O DVA 3007 5 IRT 6 O P ASI SDI D A POWER OFF BYPASS SK1 SK2 OUTPUTS OUTPUTS SIGNAL PRESENT wn 3 8 n SK8 OO OUTPUT MON N K1 INPUT 2 1 od SK10 SK10 2 Alarm SK10 1 Gnd O SK10 2 Alarm SK10 1 Gnd Note that the ZVA 3006RL is an optional relay bypass rear assembly sold separately which bypasses the input direct to output 1 in the event of a power failure This optional rear assembly is only compatible with both the DVA 3006 and DVA 3007 ASI distribution amplifiers
12. of reclocked outputs are required the DVA 3007 may be used to provide reclocking and its outputs fed to one or more DVA 3006 non reclocking DA s to provide the number of outputs required This provides a more economic solution than using multiple reclocking DA s and minimises jitter increase due to unnecessary re clocking An optional rear assembly ZVA 3006RL sold separately provides a bypass relay to switch the Input SK1 to Output 1 SK2 in the event of a power failure When this bypass rear assembly is used the number of outputs is reduced to 6 The DVA 3007 may be mounted in IRT s RU or 3 RU frames with other analogue or digital modules Features For use as buffer or distribution amplifier 8 x in phase 270 Mb s ASI or SDI reclocked outputs Automatic input equalisation to 250 metres Automatic output muting on no input May be used in conjunction with non reclocking DA s to provide multiple reclocked outputs Front panel indicators provide monitoring of presence of input signal at 270 Mb s 3007 dva ib doc Page 3 of 9 26 02 2003 Video input Number Impedance Return loss Equalisation Video outputs Number Type Level Impedance Return loss DC offset Performance Reclocking Rise time Residual jitter Connectors Indicators Power Signal present Alarm Signal loss Power requirement Voltage Consumption Other Temperature range Mechanical Finish Front panel Rear assembly
13. s marked n c on the diagrams are optional and are not included on standard production units They are shown to assist with interpretation of additional or optional functions which may be included or are necessary for factory set up procedures Drawing Sheet Description 804516 1 DVA 3007 Circuit Schematic 804673 ZVA 3006RL Bypass Relay Rear Assembly optional 3007 dva ib doc Page 9 of 9 26 02 2003 4 9 08 99d 4089 na 168 0 ZN zal 8 r 18 A 0Sl dWIH ZN oa 5 3089 ove AG 906 VIIVULSNVY MSN NOWYVLYV 006 493 96 19184 PIT Ald 5911059913 LHI L ejo 7 ON Buimes r 918708 PUM 3 aoao SSF J ydwy uognqysiq NA
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