IRT Eurocard Type. DVA Mb/s ASI/SDI 8 O/P Reclocking Distribution Amplifier

Size: px

Start display at page:

Download "IRT Eurocard Type. DVA Mb/s ASI/SDI 8 O/P Reclocking Distribution Amplifier"

Alexander Collins
5 years ago
Views:

1 I R T Electronics Pty Ltd A.B.N Hotham Parade, ARTARMON N.S.W. 064 AUSTRALIA National: Phone: (0) Fax: (0) International: sales@irtelectronics.com Web: IRT Eurocard Type DVA Mb/s ASI/SDI 8 O/P Reclocking Distribution Amplifier Designed and manufactured in Australia IRT can be found on the Internet at: dva.ib.doc Page of 9 6/0/00

2 DVA Mb/s ASI/SDI 8 O/P Reclocking Distribution Amplifier Instruction Manual Table of Contents Section Page Operational safety Description Specifications 4 Technical Description 5 Installation 5 Front & rear panel connector diagrams 7 Maintenance & storage 8 Warranty and service 8 Equipment return 8 Drawing index 9 This instruction manual applies to DVA-007 later than S/N Operational Safety: WARNING 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. 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 externally without the need for removing covers or use of extender cards. 007-dva.ib.doc Page of 9 6/0/00

3 Description BLOCK DIAGRAM DVA-007 SIGNAL PATH (Optional ZDA-006RL Bypass Rear Assembly) (Number of outputs reduced to 6) O/P O/P O/P O/P 4 INPUT EQUALISER RECLOCKING SIGNAL FAIL DETECTION O/P 5 O/P 6 O/P 7 O/P 8 MON O/P LINK Relay RL = Output Alarm RL RL ALARM O/P The DVA 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-007 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 of reclocked outputs are required the DVA-007 may be used to provide reclocking and its outputs fed to one or more DVA-006 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-006RL (sold separately), provides a bypass relay to switch the Input (SK) to Output (SK) in the event of a power failure. When this bypass rear assembly is used, the number of outputs is reduced to 6. The DVA-007 may be mounted in IRT s RU or RU frames with other analogue or digital modules. Features: For use as buffer or distribution amplifier. 8 x in-phase 70 Mb/s ASI or SDI reclocked outputs. Automatic input equalisation to 50 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 70 Mb/s. 007-dva.ib.doc Page of 9 6/0/00

4 Technical Specifications DVA-007 Video input: Number. Impedance 75 Ω. Return loss >0 db 5 MHz to 70 MHz. (>5 db with optional ZVA-006RL bypass rear assembly) Equalisation Automatic, better than 50 metres at 70 Mb/s for Belden 88 or equivalent cable. (reduces to 00m when LK is closed). Video outputs: Number 8 ASI or SDI plus one front panel monitoring output. Type Reclocked. Level 800 mv ±0% into 75 Ω. Impedance 75 Ω. Return loss >0 db 5 MHz to 70 MHz. DC offset Performance: Reclocking Rise time Residual jitter Connectors: (>5 db with optional ZVA-006RL bypass rear assembly) Nil. Factory set for 70 Mb/s operation. <.0 ns, (700 ps typically). <0. UI (measured with up to 00m of Belden 88 or equivalent cable). BNC 75 Ohms. Indicators: Power LED (green) for +5 V. Signal present LED (green) when valid ASI/SDI signal present. Alarm: Signal loss Power requirement: Voltage Consumption Contact closure. Link selectable NO/NC. 8 Vac CT (4-0-4) or ±6 Vdc.5 VA (including ZVA-006RL optional rear assembly). Other: Temperature range 0-50 C ambient. Mechanical Suitable for mounting in IRT 9" rack chassis with input, output and power connections on the rear panel. Finish: Front panel Grey background, black lettering & red IRT logo. Rear assembly Detachable silk-screened PCB with direct mount connectors to Eurocard and external signals. Dimensions 6 HP x U x 0 mm IRT Eurocard. Standard accessories Rear connector assembly with matching connector for alarm output. Optional accessories ZVA-006RL relay bypass rear assembly (6 O/P). Due to our policy of continuing development, these specifications are subject to change without notice. 007-dva.ib.doc Page 4 of 9 6/0/00

5 Technical Description The input circuit of the DVA-007 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 00 MHz. This corresponds to 00 metres of Belden 88 cable. When link LK is closed equalisation is reduced to 00m 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-007 is insensitive to the pathological patterns that can be present in the serial digital video signal. The DVA-007 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-007. The input cable equaliser circuit U and reclocking circuit U incorporate carrier detection circuits to mute the output when no signal is applied to the unit. The carrier detect signal and lock signal of U are used to energise relay, RL via a transistor, Q, when locked carrier is present. The relay contacts are connected to SK0 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 LK, on the circuit board. The dual AC inputs are rectified and then regulated by a switch mode regulator circuit to provide the operating voltage for the unit. dc is fed to pin a of the rear Euro-connector via a polyfuse, JP. The is to provide power for a signal bypass relay on the optional ZVA-006RL bypass rear assembly, should one be used. The polyfuse protects the power rail by going high impedance should pin a be shorted to ground. This protects against the accidental insertion of the DVA-007 in anything other than its standard rear assembly or the optional ZVA-006RL rear assembly. Handling: Installation The DVA-007 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-007 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. LK is factory set for a contact make to ground on signal failure at SK0 pin on the rear panel, move LK from the normally closed (N/C) to the normally open (N/O) position for a break to ground on signal or power loss. Link LK closed reduces the input equalisation to 00m for use in noisy environments or when a short input cable is used. The presence of 70 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). 007-dva.ib.doc Page 5 of 9 6/0/00

6 It is recommended that unused outputs on the rear panel be terminated with 75-ohm termination plugs. 007-dva.ib.doc Page 6 of 9 6/0/00

7 Front & 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 DVA O/P ASI/SDI D.A. ZVA-006RL 6 O/P ASI/SDI D.A POWER OFF BYPASS SK-SK. SK9 SK7 SIGNAL PRESENT SK7 SK8 SK5 SK6 SK6 SK4 SK5 SK SK4 SK OUTPUT MON DC SK SK SK INPUT SK0 SK0 = Alarm SK0 = Gnd RLR SK INPUT SK0 SK0 = Alarm SK0 = Gnd N40 Note that the ZVA-006RL is an optional relay bypass rear assembly (sold separately), which bypasses the input direct to output in the event of a power failure. This optional rear assembly is only compatible with both the DVA-006 and DVA-007 ASI distribution amplifiers and not the previous ASI/SDI distribution amplifiers, DVA-00 to DVA dva.ib.doc Page 7 of 9 6/0/00

8 Maintenance & 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 & 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 $A00.00 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 arranging 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. 4. A contact name and telephone and fax numbers. 5. Details of payment method for items not covered by warranty. 6. Full return address. 7. For situations when No Fault Found for repairs, a minimum charge of $A00.00 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 6 Hotham Parade ARTARMON N.S.W. 064 AUSTRALIA Phone: Fax: service@irtelectronics.com 007-dva.ib.doc Page 8 of 9 6/0/00

9 Drawing Index Note: Components 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 DVA-007 Circuit Schematic ZVA-006RL Bypass Relay Rear Assembly (optional). 007-dva.ib.doc Page 9 of 9 6/0/00

10 P SK9 L9R R9R SK8 L8R COPYRIGHT DVA-007 SDI/ASI Reclocking Distribution Amplifier Title SIZE A DO NOT COPY NOR DISCLOSE TO ANY THIRD PARTY WITHOUT WRITTEN CONSENT SCALE Sheet Drawing No N.T.S. of IRT Electronics Pty. Ltd. ARTARMON NSW AUSTRALIA 064 DRAWN K.N. CHECKED ENG. APP. Revision: Date: 6-Feb ECR ECR4 Input, Reclocking and Output Circuit Output 8 R8R GND Output 7 SK7 Output 6 L7R Monitor O/P Output 5 Output 4 Signal Detect Output R7R Output Input Output 80456s.sch Power Supply Circuit AC AC AC CT GND AC AC 4 SK s.sch L6R LK R6R 'DC' R40 680R LD HLMP-50 SK5 'grn' L5R n.c. R5R n.o. A B A B A B 4A 4B SK4 5A 5B 6A 6B 7A 7B 8A 8B 9A 9B 0A 0B A B A B A B 4A 4B 5A 5B 6A 6B 7A 7B 8A 8B 9A 9B 0A 0B A B A B A B 4A 4B 5A 5B 6A 6B 7A 7B 8A 8B 9A 9B 0A 0B A B A B L4R P J optional power in (used when fitted to FRU-00 frame) DIN64RA PCB R8 0K C6 00nF 'SIGNAL' MON. O/P SK 'grn' LD HLMP-50 R9 680R ALARM CIRCUIT CONTACT CLOSURE (OR BREAK) TO GROUND ON ALARM, AS SET BY LK Q BSS C7 4u7 RLB RLA 5 V06 0 D BAS6 C46 0nF LR-L9R = 5nH RR-R9R = 68R JP RXE00 POLYFUSE 8 C45 0nF J DIN64 A B A B A B 4A 4B 5A 5B 6A 6B 7A 7B 8A 8B 9A 9B 0A 0B A B A B A B 4A 4B 5A 5B 6A 6B 7A 7B 8A 8B 9A 9B 0A 0B A B A B A B 4A 4B 5A 5B 6A 6B 7A 7B 8A 8B 9A 9B 0A 0B A B A B R4R SK LR RR SK LR RR JP 0R0 P JP4 0R JP5 0R0 J JP6 0R0 LR SK INPUT RR SK ECR44

11 LR-L7R = 8nH SIZE Title A COPYRIGHT ZVA-006RL SDI/ASI D.A. Rear Panel SCALE Sheet Drawing No N.T.S. of IRT Electronics Pty. Ltd. ARTARMON NSW AUSTRALIA 064 DO NOT COPY NOR DISCLOSE TO ANY THIRD PARTY WITHOUT WRITTEN CONSENT ECR45 PCB J DIN64 A B A B A B 4A 4B 5A 5B 6A 6B 7A 7B 8A 8B 9A 9B 0A 0B A B A B A B 4A 4B 5A 5B 6A 6B 7A 7B 8A 8B 9A 9B 0A 0B A B A B A B 4A 4B 5A 5B 6A 6B 7A 7B 8A 8B 9A 9B 0A 0B A B A B L7R DRAWN K.N. CHECKED ENG. APP. Revision: Date: 4-Nov-00 R7R SK7 L6R R6R SK6 L5R R5R SK5 75R L4R R4R SK4 75R LR RR-R7R = 0R RR LR J optional power in (used when fitted to FRU-00 frame) LR 8nH SK INPUT SK RR JP 0R0 JP 0R0 JP4 0R0 JP5 0R0 SK0 J RLR G5Y-54P RR 56R SK P MTMM-0 R8R R9R P MTMM-05 DR BAS6

AMS x1 Video + Audio Passive Switcher. User Manual. I.R.T. Communications Pty Ltd Page 1 of 10 Revision 03

AMS x1 Video + Audio Passive Switcher. User Manual. I.R.T. Communications Pty Ltd Page 1 of 10 Revision 03 10x1 Video + Audio Passive Switcher User Manual Page 1 of 10 Revision 03 10x1 VIDEO + AUDIO PASSIVE SWITCHER Revision History: Revision Date By Change Description Applicable to: 00 17/09/2001 SH Original