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ARG 1834 User Manual
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1. FP H automatic 204 to 188 JP11 one re conversion P10 ARG 1735 RX LVDS ASI CONVERTOR BOARD LT SPI OUTPUT SPI OUTPUT or INPUT l A B AE 53 we Avie ASI Optical SPI Data Ports El OUTPUTS Reset Status Alarm Port Option TITLE DRAWN CHECKED APPROVED DATE ARG 1834 USER MANUAL CRW GF CRW 20 4 98 DRAWINGNO 1834 EQ001 PS25 ISSUE DESCRIPTION APPD DATE 3 ECN4156 MH 30 09 99 4 ECN4463 MH 10 01 01 5 ECN4479 ECN4514 SL 18 05 01 ARG ElectroDesign Ltd 1998 2 8 ARG1834 RX General Link Settings see also Section 2 7 Fit this link only if being driven by G 703 output from certain OEM equipment Otherwise leave vacant inverts bit order Alarm desensitising see Section 2 3 1 Eprom Size transport of non MPEG data in Rate Adapting mode cannot be used in Synchronous mode SE f Fitting this link will allow DE INTERLEAVING OFF ON LZ ee NER ARG1738 DE INTERLEAVING MODULE JP7 fitted as shown enables R S error correction
2. ARG 1834 User Manual ISSUE 5 ELECTRODESIGNH TITLE DRAWN CHECKED APPROVED DATE ARG 1834 USER MANUAL CRW GF CRW 20 4 98 DRAWINGNO 1834 EQ001 PS1 ISSUE DESCRIPTION APPD DATE 3 ECN4156 MH 30 09 99 4 ECN4463 MH 10 01 01 5 ECN4479 ECN4514 SL 18 05 01 ARG ElectroDesign Ltd 1998 Installation PLEASE READ THIS SECTION CAREFULLY Both the ARG1834 TX and RX units are intended to be installed in standard 19 Euroracks in an indoor environment To comply with IEC 950 safety requirements there should be adequate means nearby to isolate the units from the mains supply in an emergency As the units are Class 1 equipment a mains earth must be provided via the mains input socket An additional chassis bonding point is also provided on each unit The units are not intended to be operated with any part of the casing removed There are hazardous voltage accessible within the units For the 48 VDC powered version it is strongly recommended that the chassis bonding stud is wired to local bonding as the 48VDC supply input is isolated from the case Warranty These units are warranted against failure due to poor workmanship or defective materials for a period of 2 years from date of shipment There are no user serviceable parts inside any servicing or other operations requiring access to the internal parts must be referred to qualified personnel who must use full precautions to avoid the possi
3. mode in which a 34 368Mb s data stream may be transported across the Telecom Network synchronised at the Transmit end to a 4 296MHz byte rate clock derived from the Network clock TITLE DRAWN CHECKED APPROVED DATE ARG 1834 USER MANUAL CRW GF CRW 20 4 98 DRAWINGNO 1834 EQ001 PS 18 ISSUE DESCRIPTION APPD DATE 3 ECN4156 MH 30 09 99 4 ECN4463 MH 10 01 01 5 ECN4479 ECN4514 SL 18 05 01 ARG ElectroDesign Ltd 1998 Output Interfaces The ARG1834 RX unit provides dual DVB ASI and dual DVB SPI outputs to drive subse quent equipment and allow for redundancy switching Each output has its own drivers and each output transmits the same data conforming to EN 50083 9 and to DVB PI 232 i e 8 bit parallel data clock etc for the SPI outputs and serial 270Mb s data for the ASI outputs In normal use the outgoing data streams faithfully reproduce the original data stream so MPEG 2 data will be in one of three formats a packets of 188 data bytes b packets of 188 data bytes plus 16 padding bytes c packets of 188 data bytes plus 16 Reed Solomon check bytes Packet recognition and reconstruction is usually automatic but link options are also provided and are in fact recommended if using Synchronous mode see Section 2 7 i In it s default setting when shipped Embedded Auto Format the ARG1834 RX unit receives information in the data stream which instructs it to process the incoming
4. DATE 3 ECN4156 MH 30 09 99 4 ECN4463 MH 10 01 01 5 ECN4479 ECN4514 SL 18 05 01 ARG ElectroDesign Ltd 1998 1 8 ARG1834 TX Link Settings see also Section 1 9 TOP VIEW Front edge of main pcb DL Front Panel SMA Coaxial Connector io p Rear Panely i 7 7 Insert link here to connect G 703 D Cable shield to Ground units maybe ae i Insert link here to use SPI data port as an shipped with this link already fitted 7 output i e converted from an ASI input 4 7 Insert link here ONLY if transporting 204 padded packets from an ASI source Insert link here to convert 188 byte packets to 204 RS packets ASI input only Do not use f a ARG 1735 TX ASI LVDS CONVERTOR BOARD Issue 2 onwards E ASI Optical G 703 SPI Data Port Clock Output ASI Copper Input Output Input Reset Status Alarm Port TITLE DRAWN CHECKED APPROVED DATE ARG 1834 USER MANUAL CRW GF CRW 20 4 98 DRAWINGNO 1834 EQ001 PS15 ISSUE DESCRIPTION APPD DATE 3 ECN4156 MH 30 09 99 4 ECN4463 MH 10 01 01 5 ECN4479 ECN4514 SL 18 05 01 ARG ElectroDesign Ltd 1998 1 9 ARG1834 TX General Link Settings see also Section 1 8 Fit this link only if being driven by G 703 output from certain OEM equipment Otherwise leave vacant Inverts bit order These links must be f
5. in both SPI and ASI formats Assuming the received data is from a matching ARG1834 TX unit the ARG1834 RX automatically detects the original input byte rate packet type and ASI packet or byte space format if applicable and reconstructs this from the incoming G 703 line signal Transparent Network synchronised 34 368Mb s parallel data may also be transported To facilitate simple redundancy switching duplicate data outputs are provided with separate drivers etc Telecom Input Interface E3 Interface at 34 368Mb s using HDB 3 line coding compliant with ITU T Recommendation G 703 unframed Input Connector 75ohm BNC coaxial isolated from chassis earth link available Output Interfaces 2 off DVB ASI Copper interfaces as defined in EN 50083 9 and DVB PI 232 and 2 off DVB SPI LVDS interfaces as defined in EN 50083 9 and DVB PI 232 and 2 off DVB ASI Optical interfaces ditto Factory Option Output Connectors 2 off 25 way female D type connector with threaded locking posts SPI and 2 off 75 ohm BNC coaxial ASI Copper and 2 off SC type Multi mode Fibre connectors ASI Optical Factory Option Output signal levels LVDS Low Voltage Differential Signalling SPI 800mV p p 10 ASI Copper 14 to 20 dBm average ASI Optical Power Supply Single phase auto sensing mains input 100 240 Vrms a c 50 60 Hz or 48 VDC factory option 40 5 57VDC range Typical consumption 25V
6. provided at the Network byte rate see section 1 2 Clock Output Interface 1 1 2 The ASI serial inputs accept a serial data stream operating at 270Mb s gross bit rate Data rates in the range 8 32 2Mb s will be automatically rate adapted upwards for transmis sion over the E3 Network interface Data rates outside this range should not be used with the ASI inputs 1 1 3 The ARG 1834 TX unit will lock on to incoming transport streams from its inputs with the following priority lt 1 gt ASI Copper lt 2 gt ASI Optical lt 3 gt SPI LVDS However once locked switching to another input will not occur unless the existing input signal is lost loss of carrier or loss of MPEG frame lock LEDs on the front panel report the activity status of the inputs see Section 1 6 TITLE DRAWN CHECKED APPROVED DATE ARG 1834 USER MANUAL CRW GF CRW 20 4 98 DRAWINGNO 1834 EQ001 PS7 ISSUE DESCRIPTION APPD DATE 3 ECN4156 MH 30 09 99 4 ECN4463 MH 10 01 01 5 ECN4479 ECN4514 SL 18 05 01 ARG ElectroDesign Ltd 1998 1 1 4 The ARG 1834 TX unit automatically senses the incoming data rate and packet type and configures its operation accordingly The incoming data may be from an MPEG 2 source in which case the data is expected to be fully compliant with EN 50083 9 and DVB PI 232 and the ARG1834 TX unit will accept and automatically differentiate between the following a packets of 188 data bytes b packets
7. 4 USER MANUAL CRW GF CRW 20 4 98 DRAWINGNO 1834 EQ001 PS5 ISSUE DESCRIPTION APPD DATE 3 ECN4156 MH 30 09 99 4 ECN4463 MH 10 01 01 5 ECN4479 ECN4514 SL 18 05 01 ARG ElectroDesign Ltd 1998 1 0 ARG1834 TX SPECIFICATION The ARG1834 TX unit contains the necessary functionality to accept an MPEG 2 Transport Stream in either DVB ASI serial or DVB SPI parallel form or in fact any 8 bit parallel data clock perform parallel to serial conversion where necessary rate adaption Reed Solomon error correction checking and re encoding byte Interleaving if required monitor for fault or alarm conditions and transmit the serial data stream so produced over a digital Telecommunications Network conforming to ITU T Recommendation G 703 at a gross line rate of 34 368Mb s E3 Input Interfaces or Input Data Rate Input Connectors or or Input signal levels or or MPEG Framing structure Clock Output Clock Output Connector Clock o p signal levels Telecom Output Interface Frame Structure Output Level Output Connector G 703 Monitor Port Power Supply or Mains Input Fuse Rating 48 VDC Input Fuse Auxiliary Control Signals Synchronous parallel DVB SPI interface 8 bit parallel data clock Asychronous serial DVB ASI interface Copper standard fibre optic available as a factory option as defined in EN 50083 9 and DVB PI 232 previously DVB PI 154 In the range 8 32 2 Mb s or 34 368Mb s synchronou
8. A Mains Input Fuse 2AT 2 Amp Anti Surge as per IEC 127 and UL recognised 48 VDC Input Fuse 2A quickblow 2AF Auxiliary Control Signals Summary alarm fail indications via Form C relay contacts with reset input Auxiliary Connector 9 way D type female connector with threaded locking posts Operating Temperature OdegC to 40degC Storage Temperature 5degC to 70degC Safety EN 60950 73 23 EEC LVD Europe UL 1950 listed 3rd edition CSA 950 95 TITLE DRAWN CHECKED APPROVED DATE ARG 1834 USER MANUAL CRW GF CRW 20 4 98 DRAWINGNO 1834 EQ001 PS17 ISSUE DESCRIPTION APPD DATE 3 ECN4156 MH 30 09 99 4 ECN4463 MH 10 01 01 5 ECN4479 ECN4514 SL 18 05 01 ARG ElectroDesign Ltd 1998 EMC EN 55022 EN 50082 1 89 336 EEC Europe 47CFR CH 1 FCC Part 15 Subpart B Class A Link Options Refer to sections 2 7 and 2 8 for link locations FEC on off factory default on De Interleaving on off factory default on G 703 line equalisation Disable automatic 204RS to 188 byte conversion only converts if original input was 188 byte see section 2 2 see section 2 2 see section 2 1 see section 2 2 5 G 703 B E R alarm sensitivity see section 2 3 1 MPEG Packet auto configuration see section 2 2 Bit order inversion see section 2 1 for compatibility with certain OEM equipment Forcing of ASI space format byte or p
9. B 3 line coding is used and a 750hm BNC coaxial socket is provided on the rear panel The Network connection is transformer coupled 1 3 2 A G 703 monitor output is also provided on the rear panel via a BT type 43 coaxial connector the outer of which is connected to signal ground The output level into 75 ohms is nominally 6dB below the main G 703 output 1 3 3 The order of bits transmitted to line can be inverted for compatibility with certain OEM products see section 1 9 for location of link TITLE DRAWN CHECKED APPROVED DATE ARG 1834 USER MANUAL CRW GF CRW 20 4 98 DRAWINGNO 1834 EQ001 PS10 ISSUE DESCRIPTION APPD DATE 3 ECN4156 MH 30 09 99 4 ECN4463 MH 10 01 01 5 ECN4479 ECN4514 SL 18 05 01 ARG ElectroDesign Ltd 1998 1 4 Auxiliary Interface The ARG1834 Tx unit provides alarm fail reset functionality via a 9 way filtered D type female connector on the rear panel The ARG1834 TX unit may be reset by the application of a short circuit between pins 5 and 9 on the Auxiliary Connector While this condition is applied and held the ARG 1834 TX unit will be held in a reset state in which it will not respond to data in the MPEG 2 Transport Stream Both the Alarm and Fail relays will be de activated signalling an Alarm Fail condition to appropriately connected equipment Internally stored alarm fail states and any other internally stored status information will be erased Upon r
10. CRIPTION APPD DATE ECN4156 MH 30 09 99 ECN4463 MH 10 01 01 ECN4479 ECN4514 SL 18 05 01 A R G ElectroDesign Ltd 1998 2 2 1 The DVB SPI outputs are available in LVDS form and are accessed via 25 way female D type connectors on the rear panel as shown below Data changes on the falling edge of the clock on pin 1 Pin Signal Pin Signal 1 Clock A 14 Clock B 2 System Gnd 15 System Gnd 3 Data 7 A MSB 16 Data 7 B MSB 4 Data6A 17 Data 6B 5 Data 5 A 18 Data5B 6 Data4A 19 Data 4 B 7 Data 3 A 20 Data3B 8 Data2A 21 Data 2 B 9 7 Data 1 A 22 Data 1B 10 Data 0 A 23 Data 0 B 11 DValid A 24 DValid B 12 PSync A 25 PSync B 13 Cable Shield Note that there is a link option to use one LVDS port B as an INPUT see Section 2 7 2 2 2 The DVB ASI Copper outputs are accessed via 75 ohm BNC coaxial connectors on the rear panel see Section 2 6 2 2 3 The DVB ASI Optical outputs where fitted Factory option are accessed via SC style optical connectors on the rear panel see Section 2 6 2 2 4 By default the ASI outputs will have the same space format as the original Transport Stream input It is however possible to force the output to either byte or packet space by fitting a link and removing a jumper cable as shown in Section 2 7 If the original stream was in SPI format the ASI outputs will be packet spaced by default 2 2 5 It is also possible to automatically c
11. For LVDS interface links 1 through 50 must be fitted on both sets of headers JP3 amp JP4 TITLE DRAWN CHECKED APPROVED DATE ARG 1834 USER MANUAL CRW GF CRW 20 4 98 DRAWINGNO 1834 EQ001 PS26 ISSUE DESCRIPTION APPD DATE 3 ECN4156 MH 30 09 99 4 ECN4463 MH 10 01 01 5 ECN4479 ECN4514 SL 18 05 01 ARG ElectroDesign Ltd 1998
12. MONITORING AND ASI SPI CONVERSION FUNCTIONS ASI Cu G 703 G 703 Dual ASI Cu Output Input ASI Opt gt TX gt R ne Dual ASI Opt Sel Anput 7 Dual SPI Outputs G 703 Monitor Output ASI Cu gt G 703 Dual ASI Cu Output ER ASI Opt gt TX gt RX 7 Dual ASI Opt SPI output 1 G 703 OA Monitor lt SPI Input Output 6dBC SPI port can be used as a monitor output or purely for ASI to SPI conversion SPI port can be used as an input for SPI to ASI conversion Note Optical ASI ports are a factory fit option and are not fitted as standard OTHER OPTIONS TRANSMITTER RECEIVER Mains 48 VDC Power Supply Mains 48 VDC Power Supply e G 703 Cable shield earthing e G 703 Cable shield earthing usually earthed at TX end usually isolated at RX end Bit order inversion for compatibility Bit order inversion for compatibility with other OEM G 703 streams with other OEM G 703 streams Reed Solomon on off Reed Solomon on off interleaving on off De Interleaving on off Support for non MPEG SPI data Support for non MPEG SPI data 188 byte to 204 RS conversion e Alarm desensitisation noisy lines 204 PAD to 204 RS conversion e Forcing byte or packet space ASI 204 byte to 188 byte re conversion G 703 line equalisation setting TITLE DRAWN CHECKED APPROVED DATE ARG 183
13. N4156 MH 30 09 99 4 ECN4463 MH 10 01 01 5 ECN4479 ECN4514 SL 18 05 01 ARG ElectroDesign Ltd 1998 2 7 ARG 1834 RX Link Settings see also Section 2 8 Shown in Embedded Auto Format mode Set all three to 1 to select Local Auto Set any one to 1 to select a given mode Refer to section 2 2 As viewed from above Fit this link only if being driven by the G 703 signal from certain OEM equipment Otherwise leave vacant MPEG Data Format 0 4 Line Equalisation l See section 2 3 1 for function of this Alarm desensitising link 0 4 188 204P 204RS EQB1 EQBO I De Interleaving module r Fit this link to force packet space format and remove jumper cable from JP16L 7 Fit this link to force byte space format and remove jumper cable from JP16 Fit this link to unit Line Loss Approx Line Length 0 1 8 6 to 13 2 dB 145 230m 0 0 6 to 9 9 dB 100 170m 1 0 2 6 to 8 dB 44 135m 1 1 0 to 3 5 dB 0 60m S 2003 type cable 7 Insert link here to connect G 703 Cable shield to Ground SMA Coaxial Connector Front Panel use SPI port B as an INPUY then converts SPI to ASI Fit this link to DISABLE
14. NVERSION OPERATIONS 1800 SERIES TRANSMITTER 1800 SERIES RECEIVER AUTO SENSING INPUTS TRANSPORT STREAM PHYSICAL INTERFACE SIMULTANEOUS OUTPUTS NETWORK ASI Copper gt gt ASI Copper ASI Optical gt gt gt gt ASI Optical sel Syne f gt ome INPUT OUTPUTS SPI gt gt gt gt SPI eye ASI to i v SPI t rek J ie I ane ASI ae v A gt SPI ER gt gt SPI 204PAD mo A v z 204PAD ASI Add R S to ASI SPI Check ASI puns Bytes A SPI gt gt Mn KES gt SPI 204RS A i v 204RS ASI Soa Inter De Inter wey o gt ASI leaving leaving Notes 1 ASI outputs are byte spaced or packet spaced whichever was originally input by default 2 ASI output spacing can be forced to byte or packet not if also using 188 to 204 conversion 3 If the input is in SPI format the ASI outputs will be packet spaced by default 4 With the correct links 188 byte packets can be automatically reconstructed at the Rx unit TITLE DRAWN CHECKED APPROVED DATE ARG 1834 USER MANUAL CRW GF CRW 20 4 98 DRAWINGNO 1834 EQ001 PS4 ISSUE DESCRIPTION APPD DATE 3 ECN4156 MH 30 09 99 4 ECN4463 MH 10 01 01 5 ECN4479 ECN4514 SL 18 05 01 ARG ElectroDesign Ltd 1998 ARG1800 SERIES
15. Reed Solomon forward error correction 204 188 8 is incorporated to control the integrity of the transmission over the Telecom Network Convolutional interleaving depth 12 is set as default Please note that data transmission is SIMPLEX one way only and that both TX and RX units are required to enable Telecom Network connection A proprietary rate adaption algorithm has been adopted to minimise transmission overhead ARG 1834 TX RX BLOCK DIAGRAM denotes optional connections DVB ASI Copper Transport Stream gt Dual DVB ASI Copper input gt Transport Stream outputs DVB ASI Optical gt Dual DVB ASI Optical Transport Stream gt gt Transport Stream input ARG ARG outputs 1834 1834 LA DVB SPI TX Q RX Dual DVB SPI outputs LVDS Parallel fr gt LVDS varali S Telecom Network V parallel Transport Stream Data Clock G 703 34Mb s LAs Data Clock P DVali PSync DValid Ports Ug Trene DValig V Network Byte Clock for Synchronous G 703 Operation Monitor Port STATUS INDICATIONS UN A STATUS INDICATIONS ALARMS ALARMS RESET RESET TITLE DRAWN CHECKED APPROVED DATE ARG 1834 USER MANUAL CRW GF CRW 20 4 98 DRAWINGNO 1834 EQ001 PS3 ISSUE DESCRIPTION APPD DATE 3 ECN4156 MH 30 09 99 4 ECN4463 MH 10 01 01 5 ECN4479 ECN4514 SL 18 05 01 ARG ElectroDesign Ltd 1998 ARG1800 SERIES ALLOWED CO
16. TION APPD DATE 3 ECN4156 MH 30 09 99 4 ECN4463 MH 10 01 01 5 ECN4479 ECN4514 SL 18 05 01 ARG ElectroDesign Ltd 1998 1 7 Physical Construction The ARG 1834 TX unit is housed in a 19 Euro rack enclosure of 1U height and depth 390mm including connectors LED status indicators are provided on the front panel and connectors for the Telecom Network Interface and incoming data stream are located on the rear panel along with an auxiliary connector for Alarm signalling Use of the adjustable support kit supplied with the unit is recommended Each unit weighs approximately 5kg the support kit 2kg 8 5kg in its packing for shipment Rear Panel View ARG 1834 TX Mains powered version G 703 Monitor Port ASI Copper INPUT ASI Optical INPUT option RT HKAIHHO OS Jo CLOCK OUTPUT MAINS OUTPUT LVDS INPUT PARALLEL DATA RESET STATUS FUSE CHASSIS INPUT LVDS ALARM EARTH Notes a An internal link option is available to convert this port into an SPI LVDS output port when using an ASI Transport Stream input See Section 1 8 b For 48VDC powered versions a terminal strip replaces the mains connector Please observe the polarity as marked centre terminal is not connected Rear Panel View ARG 1834 TX 48VDC powered version TITLE DRAWN CHECKED APPROVED DATE ARG 1834 USER MANUAL CRW GF CRW 20 4 98 DRAWINGNO 1834 EQ001 PS 14 ISSUE DESCRIPTION APPD
17. acket see section 2 2 4 Use of SPI port as an input see section 2 2 1 for LVDS to ASI conversion Transmission of non MPEG SPI data see section 2 3 2 not in Synchronous mode Factory Options ASI Optical outputs 48VDC power input 2 1 Contact factory for T1 E1 E2 DS 3 E4 STM 1 variants Telecom Network Input Interface The ARG 1834 RX unit is designed to accept a standard unframed 34 368Mb s E3 HDB 3 encoded data stream as per ITU T Recommendation G 703 for Physical Electrical character istics of hierarchical digital interfaces Connection to the Telecom Network is transformer coupled through a 75 ohm BNC coaxial socket mounted on the rear panel Note There are 4 different link selectable options to set the most appropriate line equalisa tion characteristics These are set at manufacture to the most common settings but may be changed if unusual line conditions are encountered see Section 2 7 There is also a link setting which will enable the unit to correctly receive the G 703 signal generated by some other OEM equipment by reversing the bit order Synchronous mode only see Section 2 8 As the line data will in most cases have been generated by a matching ARG1834 TX unit the ARG1834 RX unit will be able to determine the original data byte rate and reconstruct the original byte rate and packet type from the incoming G 703 line signal Alternatively the units may also be used in transparent
18. bility of damage to the unit by static electricity or other means Any evidence of unauthorised access to the internal parts will be regarded as invalidating this warranty All external features and in particular the connectors should be kept free from damage or undue ingress of water dirt grease solvents or other contaminants at all times Claims against this warranty will be treated on an individual basis and will not be upheld if there are signs of accidental or intentional damage or mistreatment or if the unit has been stored or operated outside its recommended temperature range TITLE DRAWN CHECKED APPROVED DATE ARG 1834 USER MANUAL CRW GF CRW 20 4 98 DRAWINGNO 1834 EQ001 PS2 ISSUE DESCRIPTION APPD DATE 3 ECN4156 MH 30 09 99 4 ECN4463 MH 10 01 01 5 ECN4479 ECN4514 SL 18 05 01 ARG ElectroDesign Ltd 1998 ARG1834 TX RX USER MANUAL INTRODUCTION This document defines the features connections and fundamental operating principles of the ARG1834 TX and RX Telecom Network Adaptor Units the main function of which is to enable the transmission of MPEG 2 or other data streams over PDH or SDH telecoms networks using 34Mbs E3 ports The system design includes the capability of rate adaption so that data streams operating at less than 34Mb s can be modified transported and subsequently recovered also referred to as Fractional Bandwidth availability In addition DVB compliant
19. data into one of the above formats ii In Local Auto Format mode the unit checks for Reed Solomon functionality within the incoming data stream and also monitors the MPEG frame length and thereby determines the correct data structure to be reapplied iii In Local Manual mode links can be set to force the unit to format the data into one of the above three formats Once the incoming information has been converted into byte wise parallel data the Reed Solomon check bytes if present will be used to correct any corrupted data if possible If the errors are not recoverable the error flag in the packet header will be set to 1 and the data will be left unchanged The Reed Solomon check bytes will be recalculated to protect the new data The ARG1834 RX unit cannot reset the error flag if already set to 1 within the incoming data stream If there are no received errors or the received errors are recoverable the recalculated Reed Solomon check bytes are forwarded on to protect the integrity of the data over the next link in the transmission path There is a link option to disable Reed Solomon operation if desired see section 2 8 link JP7 DVB compliant De Interleaving depth 12 set as default may be used to recover data from_a suitably Interleaved source see section 2 8 TITLE DRAWN CHECKED APPROVED DATE ARG 1834 USER MANUAL CRW GF CRW 20 4 98 DRAWINGNO 1834 EQ001 PS 19 ISSUE DES
20. de In this mode the ARG 1834 TX unit feeds a synchronising byte rate clock back to the preceding equipment which the latter must then use to clock the data out to the ARG 1834 TX unit c The SPI LVDS data port can be configured as an output either for monitoring purposes or so the unit can act as an ASI to SPI convertor see Section 1 8 for links TITLE DRAWN CHECKED APPROVED DATE ARG 1834 USER MANUAL CRW GF CRW 20 4 98 DRAWINGNO 1834 EQ001 PS9 ISSUE DESCRIPTION APPD DATE 3 ECN4156 MH 30 09 99 4 ECN4463 MH 10 01 01 5 ECN4479 ECN4514 SL 18 05 01 ARG ElectroDesign Ltd 1998 1 2 Clock Output Interface Synchronous mode The ARG 1834 TX provides a clock output at the Telecom Network byte rate 4 296Mbytes sec for synchronising the preceding equipment to the line payload byte rate if required The clock signals are in LVDS Low Voltage Differential Signalling form and are available on the rear panel viaa separate 25 way female D type connector mounted on the rear panel as follows Pin Connections All other pins not connected LVDS Female D Type Pin Signal Pin 1 ClockA Pin 14 ClockB Pin 13 Ov Cable shield 1 3 Telecom Network Output Interface 1 3 1 The main Telecom Network output has been designed to comply with ITU T Recom mendation G 703 for Physical Electrical characteristics of hierarchical digital interfaces at a bit rate of 34 368Mb s HD
21. degC Safety EN 60950 73 23 EEC LVD Europe UL 1950 3rd edition CSA 950 95 EMC EN 55022 EN 50082 1 89 336 EEC Europe 47CFR CH 1 FCC Part 15 Subpart B Class A Link Options Refer to sections 1 8 and 1 9 for link locations FEC on off factory default on see section 1 1 4 Interleaving on off factory default on see section 1 1 5 Bit order inversion see section 1 3 3 for compatibility with certain OEM equipment 188 byte to 204RS MPEG packet conversion see section 1 1 4 i e addition of RS FEC 204PAD to 204RS MPEG packet conversion 2 links i e addtion of RS FEC see section 1 1 4 Enable transport of 204PAD from an ASI source see section 1 1 4 Use of SPI port as an output see section 1 1 6 for monitoring or for ASI to LVDS conversion Transmission of non MPEG SPI data see section 1 4 1 1 4 2 not in Synchronous mode Factory options ASI Optical input 48 VDC power i p Contact factory for T1 E1 E2 DS 3 E4 STM 1 variants 1 1 InputInterfaces 1 1 1 The LVDS parallel input accepts any suitable 8 bit parallel data with an accompanying byte clock If the data rate is in the range 8 32 2 Mb s it will automatically be rate adapted upwards for transmission over the E3 Telecom Network Alternatively the unit will also accept synchronous data at the Network net data rate of 34 368 Mb s See Section 1 1 6 for connector pin allocation details A synchronising clock for the preceding equipment is
22. ect 3 consecutive MPEG frames i e frames with more than 8 errored bytes In addition if a link is removed internally see section 2 7 on Link Settings the following will also signal an Alarm 2 3 1 2 Received line error rate gt 1 in 10 2 3 1 3 Failure to correct all incoming errors in a single frame more than 8 errored bytes per single MPEG frame TITLE DRAWN CHECKED APPROVED DATE ARG 1834 USER MANUAL CRW GF CRW 20 4 98 DRAWINGNO 1834 EQ001 PS21 ISSUE DESCRIPTION APPD DATE 3 ECN4156 MH 30 09 99 4 ECN4463 MH 10 01 01 5 ECN4479 ECN4514 SL 18 05 01 ARG ElectroDesign Ltd 1998 2 3 2 The following will be detected and signalled as a Fail condition 2 3 2 1 Loss of HDB 3 line signal 2 3 2 2 Loss of proprietary framing 2 3 2 3 Loss of MPEG framing 47H monitor 2 3 2 4 PSU failure or out of limits 2 3 2 5 Hardware firmware failure 2 3 2 6 Loss of payload Notes a All Alarm and Fail criteria are subject to a persistence check of 2 to 4 seconds b These functions may be disabled by internal strapping options for the transport of non MPEG data formats The ARG1834 RX unit may be reset by the application of a short circuit between pins 5 and 9 on the Auxiliary Connector While this condition is applied and held the ARG1834 RX unit will be held in a reset state in which it will not respond to the incoming G 703 E3 stream from the Telecoms Network Line System Bot
23. emoval of the short circuit the ARG1834 TX will go through a re start sequence in which major circuit functions will be re initialised There will be a finite delay before the unit will re commence data transmission over the Telecom Network Pin connections Pin Signal Pin 1 Protective ground Pin 2 Fail relay Common Pin3 Alarm relay Normally Open in Alarm condition Pin 4 Alarm relay Normally Closed in Alarm condition Pin5 Reset input 1 Pin 6 Fail relay Normally Open in Fail condition Pin 7 Fail relay Normally Closed In Fail condition Pin 8 Alarm relay Common Pin 9 Reset input 2 Relay type BT Type 53 Contact rating 1A switch 125V dc ac 30VA Note The relays are energised when the system is in a healthy state and will relax to their normally open condition if the mains power input is disconnected or the Reset condition is applied thereby automatically signalling a fault condition TITLE DRAWN CHECKED APPROVED DATE ARG 1834 USER MANUAL CRW GF CRW 20 4 98 DRAWINGNO 1834 EQ001 PS 11 ISSUE DESCRIPTION APPD DATE 3 ECN4156 MH 30 09 99 4 ECN4463 MH 10 01 01 5 ECN4479 ECN4514 SL 18 05 01 ARG ElectroDesign Ltd 1998 1 4 1 The following will be detected and signalled as an Alarm condition Failure to correct all incoming errors more than 8 errored bytes per MPEG frame 1 4 2 The following will be detected and signalled as a Fail conditio
24. h the Alarm and Fail relays will be de activated signalling an Alarm Fail condition to appropriately connected equipment Internally stored alarm fail states and any other internally stored status information will be erased Upon removal of the short circuit the ARG1834 RX unit will go through a re start sequence in which major circuit functions will be re initialised There will be a finite delay before the unit will re commence monitoring the incoming Telecom data stream and performing its synchronisation and data rate conversion tasks TITLE DRAWN CHECKED APPROVED DATE ARG 1834 USER MANUAL CRW GF CRW 20 4 98 DRAWINGNO 1834 EQ001 PS22 ISSUE DESCRIPTION APPD DATE 3 ECN4156 MH 30 09 99 4 ECN4463 MH 10 01 01 5 ECN4479 ECN4514 SL 18 05 01 ARG ElectroDesign Ltd 1998 2 4 2 5 Power Supply Input 2 4 1 Mains In its mains powered form the unit is Class 1 equipment and therefore requires an earth connection A single male filtered mains connector approved to IEC320 is provided on the rear panel along with a seperate 20mm mains protection fuse holder approved to IEC 257 A 20mm mains fuse of 2AT rating approved to IEC 127 and UL recognised must be used at all times The connector and fuse holder are located at the far right of the panel when viewed from the rear The integral mains power supply is autosensing autoranging for operation at the following supply ratings Single Pha
25. is wired to an appropriate earth point on the equip ment rack The recommended input voltage range is 40 5 57Volts DC Typical power consumption is 20VA The chassis bonding stud is available adjacent to the power connector and is internally connected to the chassis ground Ov TITLE DRAWN CHECKED APPROVED DATE ARG 1834 USER MANUAL CRW GF CRW 20 4 98 DRAWINGNO 1834 EQ001 PS12 ISSUE DESCRIPTION APPD DATE 3 ECN4156 MH 30 09 99 4 ECN4463 MH 10 01 01 5 ECN4479 ECN4514 SL 18 05 01 ARG ElectroDesign Ltd 1998 1 6 Front Panel Status Indications The ARG 1834 TX has two sets of LEDs on the front panel Their function is as follows 1 6 1 The left hand bank viewed from the front indicate the following Alarm Amber LED Fail RedLED See section 1 4 for definition of Alarm and Fail conditions Power active GreenLED 1 6 2 The right hand bank viewed from the front indicate the currently active input i e ASI Copper ASI Optical if fitted or SPI Parallel LVDS Input carrier present and selected one only Green LED i e this indicates the currently active input Input carrier present but not selected Amber LED another input must already be active See Section 1 1 3 for a description of the input priority system TITLE DRAWN CHECKED APPROVED DATE ARG 1834 USER MANUAL CRW GF CRW 20 4 98 DRAWINGNO 1834 EQ001 PS13 ISSUE DESCRIP
26. itted as shown MainPCB Eprom Size Fitting this link will allow transport of non MPEG SPI data in Rate Adapting mode INTERLEAVING OFF ON cannot be used in Synchronous mode Remove these links to disable 204PAD to 204RS conversion JP24 fitted as shown ARG1738 INTERLEAVING MODULE enables R S error correction For LVDS interface links 1 through 50 must be fitted on both sets of headers JP3 amp JP4 TITLE DRAWN CHECKED APPROVED DATE ARG 1834 USER MANUAL CRW GF CRW 20 4 98 DRAWINGNO 1834 EQ001 PS16 ISSUE DESCRIPTION APPD DATE 3 ECN4156 MH 30 09 99 4 ECN4463 MH 10 01 01 5 ECN4479 ECN4514 SL 18 05 01 ARG ElectroDesign Ltd 1998 2 0 ARG1834 RX SPECIFICATION The ARG1834 RX unit terminates a 34 368Mb s G 703 E3 Telecom Network or Line performs serial to parallel conversion rate adaption Reed Solomon error checking and correcting if required monitoring for fault or alarm conditions and reformats the data into DVB Compliant Transport streams
27. n Loss of incoming clock transitions Loss or corruption of PSYNC or DVALID or code 47H not coincident with PSYNC Input data rate too high Hardware firmware failure failure to configure PSU failure or out of limits These may be disabled by strapping options for the transport of non MPEG data formats Note All Alarm and Fail criteria are subject to a persistence check of 2 4 seconds 1 5 Power Supply Input 1 5 1 Mains In its mains powered form the unit is Class 1 equipment and therefore requires an earth connection A single male filtered mains connector approved to IEC 320 is provided on the rear panel along with a seperate 20mm mains protection fuse holder approved to IEC 257 A 20mm mains fuse of 2AT rating approved to IEC 127 and UL recognised must be used at all times The connector and fuse holder are located at the far right of the panel when viewed from the rear The integral mains power supply is autosensing autoranging for operation at the following supply ratings Single phase 50 60Hz 100 240V rms Typical power consumtion is 20VA 1 5 2 48VDC A 48 VDC power input option is also available in which connection is made via a terminal strip on the rear panel The unit is reverse polarity protected and the correct polarity is marked adjacent to the connector The fuse type is 2AF quickblow The supply inputs are floating so to guarantee ground continuity it is strongly recommended that the chassis bonding stud
28. of 188 data bytes plus 16 padding bytes link needed if ASI input see 1 8 c packets of 188 data bytes plus 16 Reed Solomon check bytes Link options are also available to allow the conversion of either 188 byte packets or 204 PAD packets into 204 RS packets thereby adding forward error correction to protect the integrity of data over the telecom link Interleaving is also available as a link option factory default on Padding bytes are otherwise transmitted transparently note that an internal link is needed to transport 204 padded streams from an ASI source see Section 1 8 whereas Reed Solomon check bytes are used to correct received errors if possible If the errors are not recoverable the error flag bit in the packet header will be set to 1 and the data will be left unchanged The Reed Solomon check bytes will be recalculated to protect the new data The ARG1834 TX unit cannot reset the error flag bit if already set to 1 within the incoming data stream If there are no errors detected or if the received errors are recoverable the recalculated Reed Solomon check bytes will be forwarded on to protect the integrity of the data over the Telecoms Network Note A link option is available to disable Reed Solomon operation if desired see section 1 9 link JP24 1 1 5 DVB compliant byte Interleaving depth 12 is set as default to further protect the integrity of data transmission see section 1 9 Please note that an appr
29. om Network input and data outputs are located on the rear panel along with an auxiliary connector for alarm signalling Use of the adjustable support kit supplied with the unit is recommended Each unit weighs approximately 5kg the support kit 2kg 8 5kg in its packing for shipment Rear Panel View ARG 1834 RX Mains powered ASI Copper OUTPUTS ASI Optical OUTPUTS option 2 o A B J O O So O cel G 703 MAINS INPUT INPUT PARALLEL DATA RESET STATUS FUSE CHASSIS OUTPUTS LVDS ALARM EARTH Notes a An internal link option is available to convert this port B into an SPI LVDS input port in which case the ARG 1834 RX unit can be used as an LVDS to ASI convertor See Section 2 7 b For the 48 VDC powered version the IEC mains connector is replaced with a simple barrier strip termination with the polarity clearly marked on the rear panel It is recommended that the chassis earth stud is connected to a suitable rack earth during installation as the 48VDC inputs are isolated from the chassis Note also that a 2A F quickblow fuse is recommended for the 48 VDC units Rear Panel View ARG1834RX 48VDC powered version O O CC Ha a JV 00 OO Q Jo o o O A B A B Z JO TITLE DRAWN CHECKED APPROVED DATE ARG 1834 USER MANUAL CRW GF CRW 20 4 98 DRAWINGNO 1834 EQ001 PS24 ISSUE DESCRIPTION APPD DATE 3 EC
30. onvert 204RS streams to 188 byte ASI streams only if original stream started off as 188 byte converted to 204RS format by an ARG1834TX A link normally disables this facility see section 2 7 TITLE DRAWN CHECKED APPROVED DATE ARG 1834 USER MANUAL CRW GF CRW 20 4 98 DRAWINGNO 1834 EQ001 PS20 ISSUE DESCRIPTION APPD DATE ECN4156 MH 30 09 99 ECN4463 MH 10 01 01 ECN4479 ECN4514 SL 18 05 01 A R G ElectroDesign Ltd 1998 2 3 Auxiliary Interface The ARG18140 RX unit provides the following alarm fail reset functionality via a 9 way filtered D type female connector mounted on the rear panel Pin connections Pin Pin 1 Pin 2 Pin3 Pin 4 Pin5 Pin 6 Pin7 Pin 8 Pin9 Relay type Signal Protective ground Fail relay Common Alarm relay Normally Open in Alarm condition Alarm relay Normally Closed in Alarm condition Reset input 1 Fail relay Normally Open in Fail condition Fail relay Normally Closed in Fail condition Alarm relay Common Reset input 2 BT Type 53 1A switch rating 125V dc ac 30VA Note The relays are energised while the system is in a healthy state and will relax to their normally open condition if the mains power input is disconnected or the Reset condition is applied thereby automatically signalling a fault condition 2 3 1 The following will be detected and signalled as an Alarm condition 2 3 1 1 Failure to corr
31. opriate De Interleaving operation will then be required at the receive end which is fitted on as default TITLE DRAWN CHECKED APPROVED DATE ARG 1834 USER MANUAL CRW GF CRW 20 4 98 DRAWINGNO 1834 EQ001 PS8 ISSUE DESCRIPTION APPD DATE 3 ECN4156 MH 30 09 99 4 ECN4463 MH 10 01 01 5 ECN4479 ECN4514 SL 18 05 01 ARG ElectroDesign Ltd 1998 1 1 6 Connection to an incoming DVB SPI parallel data stream is made via a 25 way D type female connector mounted on the rear panel as follows Pin Connections LVDS levels Pin Signal Pin Signal 1 ClockA input 14 ClockB input 2 System Gnd 15 System Gnd 3 Data 7 A MSB 16 Data 7 B MSB 4 Data6A 17 Data 6 B 5 Data5A 18 i Data 5 B 6 Data 4 A 19 Data 4B 7 Data3A 20 i Data 3 B 8 Data 2 A 21 Data 2 B 9 Data 1 A 22 Data 1B 10 Data 0 A 23 i Data 0 B 11 DValid A 24 DValid B 12 PSync A 25 PSync B 13 i Cable Shield Data should change on the falling edge of the clock on pin 1 Notes a The incoming data rate can be from 8 32 2 Mb s any input or 34 368Mb s DVB SPI parallel input only see note b If the incoming data rate is higher than that allowed an Alarm Fail condition will be signalled b Transparent byte wise 34 368Mb s input data can be transported if synchronised to the Telecom Network using the clock provided on the Clock Output Interface Connector as detailed in Section 1 2 Synchronous mo
32. s 25 way D type female with threaded locking posts SPI 75 ohm BNC coaxial ASI Copper SC type connector multi mode fibre ASI Optical LVDS Low Voltage Differential Signalling SPI 200 880mV into 75 ohms ASI Copper 26 to 14dBm average ASI Optical As defined in EN 50083 9 and DVB PI 232 where framing applicable CLOCKA CLOCKB 4 296MHz Used in Synchronous mode 25 way female D type with threaded locking posts LVDS Low Voltage Differential Signalling ITU T G 703 E3 interface at 34 368Mb s using HDB 3 line coding Proprietary Compliant with ITU T Recommendation G 703 750hm BNC coaxial BT type 43 connector level nominally 6dB below main output Single phase auto sensing mains input 100 240Vrms a c 50 60 Hz 48 VDC factory option 40 5 57VDC range Typical consumption 20VA 2AT 2 Amp Anti Surge T as per IEC 127 and UL recognised 2A quickblow Summary alarm fail indications via Form C relay contacts with reset input TITLE DRAWN CHECKED APPROVED DATE ARG 1834 USER MANUAL CRW GF CRW 20 4 98 DRAWINGNO 1834 EQ001 PS6 ISSUE DESCRIPTION APPD DATE 3 ECN4156 MH 30 09 99 4 ECN4463 MH 10 01 01 5 ECN4479 ECN4514 SL 18 05 01 ARG ElectroDesign Ltd 1998 Auxiliary Connector 9 way D type female with threaded locking posts Operating Temperature 0degC to 40degC Storage Temperature 5degCto 70
33. se 50 60Hz 100 240V rms Typical power consumption is 20VA 2 4 2 48VDC A 48 VDC power input option is also available in which connection is made via a terminal strip on the rear panel The unit is reverse polarity protected and the correct polarity is marked adjacent to the connector The fuse type is 2AF quickblow The supply inputs are floating so to guarantee ground continuity it is strongly recom mended that the chassis bonding stud is wired to an appropriate earth point on the equipment rack The recommended input voltage range is 40 5 57Volts DC Typical power consumption is 20VA The chassis bonding stud is available adjacent to the power connector and is internally connected to the chassis ground Ov Status Indication The ARG1834 RX unit has the following LED indicators on the front panel Fail RedLED Alarm Amber LED Power Active Green LED See Section 2 3 for definition of Alarm Fail conditions TITLE DRAWN CHECKED APPROVED ARG 1834 USER MANUAL CRW GF CRW DATE 20 4 98 DRAWINGNO 1834 EQ001 PS23 ISSUE DESCRIPTION APPD DATE ECN4156 MH 30 09 99 ECN4463 MH 10 01 01 ECN4479 ECN4514 SL 18 05 01 A R G ElectroDesign Ltd 1998 2 6 Physical Construction The ARG1834 RX unit is housed in a 19 Euro rack enclosure of 1U height and of depth 390mm including connectors LED status indicators are provided on the front panel and connectors for the Telec
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