AVA-MUX User manual
Contents
1. No Video signal Laser failure RS485 422 output RS485 422 output RS422 input RS422 input O0O JN O O A WM N Ground Rev C nevion com 19 AVA MUX 5 Operation AAV SD XMUX N ro Card status Input status Audio status 1 Audio status 2 O C ADC SDI A O Power PR Input 1 status O Input 2 status O SDI output Figure 7 AVA MUX LEDs Rev C Text not printed on the front panel Each module has 4 LED s The colors of each of the LED s have different meanings as shown in the tables below 5 1 ADC SDI LEDs Diode state Red LED Orange LED Green LED No light Power Major error n a Module power is Module has no Remove module OK power Input 1 status Video signal Signal detected No signal Channel inactive absent but not locked Input 2 status Video signal Signal detected No signal Channel inactive absent but not locked SDI output Errors detected n a No errors detected 5 2 AAV SD XMUX LEDs AES status LEDS show information decided by DIP switch 2 7 LED mode On corresponds to the audio input mode and is the preferred setting in the AVA MUX Off corresponds to the de embedder audio mode Diode state Red LED Orange LED Green LED No light Card status PTC fuse has Modu2. Group 1 embedded output is controlled by switches on SW1 positions 1 2 and 3 AES outputs are controlled by switches on SW3 positions 1 2 and 3 3 2 1 1 2 Sources There are eight possible permutations of the switches Seven of the permutations choose the input sources One of the settings off off off is used to disable the group embedding or set the AES outputs to silence Table 2 Source switch encoding Switch Output group1 group2 group3 group4 AES1 amp 2 Stereo disabled tone 1or2 on on on 2or5 on on on 3 or6 on on on on nevion com 12 AVA MUX Rev C 3 2 1 1 3 Examples LEDs insert O DMUX EDH i Cha ga No Fallback 24bit SD N w Lid T E MA nations Figure 3 Example 1 The module above Figure 3 is set to the following Group1 output is embedded with signals from the ADC inputs Group2 output is embedded with signals from AES1 amp 2 inputs Groups output is embedded with signals from de embedded group3 Group4 output is not embedded AES1 amp 2 outputs signals from de embedded group1 ON ON ON a ME a a Wy 3 w AY 5 6 J J c 4d og o LU o o mn m Y L L g gt no x Lid o a 6 Za S O pI T N L on LT oN n 00 0 mi pr y 5 o jr e a i Figure 4 Example 2 The module above Figure 4 is set to the following Group1 output is embedded with sig
3. 458us 8 32 8 96kHz samples 48 96000 458us Video Audio embedding Audio de embedding Embedding data GPI mode Embedding data UART mode De embedding data GPI mode De embedding UART mode 2 3 2 SD latencies ADC SDI Video 2 4 Inputs 2 4 1 Analog Video input Format Video frame rate Impedance Return loss Signal level Connectors Termination configuration 2 video lines PAL NTSC S Video 50 Hz or 60 Hz 75 ohms gt 40dB up to 5 75 MHz 1V BNC DIP switches on backplane nevion com 6 AVA MUX 2 4 2 Analog audio inputs Number of inputs Sampling frequency Differential input impedance Common mode input impedance Connector Maximum signal level 0 dBFS Level precision Common mode voltage tolerance Frequency response Pass band ripple Stop band attenuation Dynamic range THD N 1 dBFS Intermodulation distortion Crosstalk CMRR 20 Hz 15 kHz 2 4 3 Digital Audio Inputs Number of AES3 inputs Audio data rate Input impedance Connector C1 backplanes Embedded audio word length Embedded audio Channel Status Sample rate converter dynamic range 2 4 4 Data inputs RS422 Connector UART mode Baud rates Data length Parity Stop bits GPI mode Raw data sampling frequency 2 5 Outputs 2 5 1 SDI output Video Data rate Number of SDI outputs Connector Impedance Return loss Signal level Rise fall
4. 2 3 2 SD laiencieS ADG S Dl ia AAA A AA 6 PEAR 9 Co ee aeRO RE EE re gO Soran OP EE eS eT A Af Pee gg ar 6 241 Analog Video inpute eat ieee cate ta GPa da 6 2242 Analog audio INPUTS arre 7 2 4 3 Digital A dio INPUTS ota eea ead lence anne a a aE aE T ERAEN 7 24 4 Data INDUIS inne a a a R E OEE AE EEE E RE E 7 2 0 QUMPUTS ds di ia 7 2o SODroutput enn hela ok AG A O Nt A t 7 2 5 2 Optical OU ars 8 2 9 9 Digital Audio OPUS usara lada 8 254 Data OPUS reido A a ii ia 8 2 0 5 GPI OUTPUTS traca dt ii 8 26 Connector module ai da a dads A ad ds 9 2 LAMA id eee 9 2 6 2 Mounting the connector module second 9 A A Coa AOA ia ten AS in SE ta Sa ohn 1 tn aha 10 RAP e a telat tunteda ool latte id ss ham acta Cac e eee Ae ak ce 10 NA O 10 3 1 2 Monitoring and control of ADC SDI with Gyda cccconncoccccccnnnccccnnnnanancccnnncnnnnnananaccncnncnos 11 3 2 A di AAV SD XMUX bit odos 11 3 2 1 DIP switch Configuration de coi 12 32 2 OYDA Control ti aa tied sian O RRO Asmat A O RO E 15 3 2 3 Data transmission ai 16 4 COMMECTIONS ccccccccccccccececeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeess 18 4 1 Audio CONMECHONS D BAS coe cacenaue saunders Seadeine cetbesnicdetnanicosaeans 18 4 2 GPI Data connections 8P8C JaCk cccccccccncnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnss 19 5 OI NA A A A SUN cbr pean DA A AIDA 20 E taeda dtc tn on et enttatattedt ita tunica teenie a 20 5 2 ARAN SD MU
5. 2 AES3 digital audio and non audio signals Embed 2 AESS digital audio and non audio signals Embed 4 analog audio signals Apply sample rate converters when needed on the AES3 inputs Apply extra audio delay Swap stereo channels Make mono or sum from stereo signals Have optical laser output Transport asynchronous serial data Generate video and audio signals De glitch correctly synchronized switched video The card has a serial digital video input and a serial digital video output There is an optional optical output with a choice of lasers that may be applied in point to point and CWDM configurations 1 3 ADC SDI The ADC SDI is a high quality 10 bit composite to digital video converter The converter has two inputs which it can use as two CVBS or one S video inputs The input mode can either be locked or the card will scan the inputs and all formats until it finds a valid signal The ADC SDI can be configured with switches on the unit or via the GYDA control interface The ADC SDI can generate a white pulse to mark field one of an 8 field PAL 4 field NTSC signal An intelligent composite encoder digital to analog converter like the DAC SDI will encode to the correct field 8 field PAL 4 field NTSC This will reduce artifacts due to composite decoding and re encoding nevion com 4 AVA MUX Rev C 1 4 Signal flow Optical Output Figure 1 AVA MUX signal flow The analog
6. 4 Data outputs Number of RS485 outputs Connector 2 5 5 GPI outputs Signals Connector Signal type Maximum voltage Maximum current Rev C Single Mode 1310nm 40nm 7 5 dBm 0 dBm 1550nm 40nm 0 dBm 1270 1290 1310 1330 1350 1370 1390 1410 1470 1490 1510 1530 1550 1570 1590 1610nm 6nm as per ITU T G 694 2 0 dBm Max 0 135 UI Typ gt 40 dB 4 SC UPC 2 48 kHz 110 ohm transformer balanced DB 25F Female with UNC threads 1 8P8C Modular jack Power status good no video input lock laser failure 8P8C Modular jack Open drain transistor with free wheel diode 100 V 150 mA nevion com 8 AVA MUX Rev C 2 6 Connector module 2 6 1 AVA MUX C2 sO Ox SDI output ON Ov 20 ll Rei Termination 2o O Audio Inputs O O aiwork Made in Noruay Figure 2 AVA MUX C2 2 6 2 Mounting the connector module The details of how the connector modules are mounted can be found in the user manual for the sub rack frame FR 2RU 10 2 This manual is available from our web site http www nevion com nevion com 9 AVA MUX Rev C 3 Configuration 3 1 Video ADC SDI 3 1 1 DIP switches The configuration of the card can always be changed from the GYDA system controller but may also be configured with DIP
7. Input configuration Enable disable EDH Enable disable Field 1 marking Filter selection Card label 3 2 Audio AAV SD XMUX The XMUX embedding core can be considered as an 18x14 stereo audio router and a 5x4 group router The group router is used to transport or shuffle groups without introducing any additional delay The inputs or sources in the stereo router are from the de embedded audio groups the AES and analog audio inputs the delay line outputs and the two built in generators The stereo router outputs or destinations are the groups of embedded audio in the output video the AES outputs and the delay line inputs A normal de embedder configuration would route the de embedded audio to the AES outputs A normal embedder configuration would be to route the audio inputs to the appropriate embedder group outputs The AAV SD XMUX module can do both at the same time Many other configurations are possible and the module may be dynamically controlled as an 18x14 audio router via the system controller GYDA Full control of the module is performed with the GYDA system controller Controls only possible with GYDA are The data transmission parameters and channel selection The output processing of each stereo signal LR RL LL RR MS Sum OLR LOR The delay lines delays and routing Video and audio generator configuration nevion com 11 AVA MUX Rev C 3 2 1 DIP switch Config
8. switches Most users will set all switches OFF except switches 1 and 10 3 1 1 1 Manual mode DIP switch 1 should be in the ON position if the card is to be controlled with the other DIP switches If the switch is OFF then the card starts with the stored configuration and the other switches are ignored GYDA is always able to re configure the card but the new configuration will only be remembered if switch 1 is OFF 3 1 1 2 Video input mode DIP switches 2 and 3 configure the input channel selection modes as shown in the table Switch 2 Output Video Mode O Auto detect The first valid detected signal is used 1 CVBS on input 1 O CVBS on input 2 1 YC or S Video SVHS on inputs 1 and 2 3 1 1 3 EDH packet disable DIP switch 4 should be in the ON position if the SDI signal must not contain an EDH packet 3 1 1 4 Field 1 marking disable DIP switch 5 should be switched ON if the SDI signal must not have a field 1 marker on line 7 3 1 1 5 Decoder filter selection DIP switch 6 and 7 are used to select the decoder filter used as shown in the following table The ADC SDI has two adaptive filters a comb filter and a low pass notch filter set Switch 7 6 Decoder filter O O Default Adaptive 3 line comb filter selection NTSC adaptive comb with filter coefficients 4 2 1 4 PAL adaptive comb with filter coefficients 1 2 O 1 2 O 1 Adaptive 3 line comb filter selection with optional filter coefficien
9. video input signal type is identified The synchronization information in the analog signal is detected The analog signal is digitized to a 10 bit parallel signal An FPGA adds EDH information and Field 1 marking The signal is serialized and goes to the embedder card The video is de serialized and passed to the embedding processor which inserts the digital audio The video signal is then re serialized and sent to the electrical and optical outputs The audio embedder module has two main processing blocks One processes the video stream and the packet data the other processes the audio The packet processing core forms a group router which can route embedded audio between groups without any extra delay The AAV SD XMUX audio core is an AES3 stereo audio router The received embedded audio and the audio inputs are the sources in the router The embedded output groups and AES3 outputs are the destinations This feature may also be used to perform stereo channel swapping Four stereo delay lines are also available in the router with a total combined delay of 1 25s Audio processing is possible within each stereo output The channels may be changed allowing L R swapping mono assignment summing MS conversion and phase reversal of one of the signals There are two embedding modes Non SRC mode The AES3 input signals are embedded transparently Automatic mode The module will use sample rate converters when necessary Data signals s
10. A BEDS es ei eatery cece cast OM cae id 20 NA Sr A SA 21 6 Laser safety precautions 4 02 0 canada ii 22 General environmental requirements for Nevion equipment ccceeeeeeeeeeeeeeees 23 Produc WV alla Vase aaa tacna 24 Appendix A Materials declaration and recycling informati0N ooooccconnnncccn nnncccccnnnnns 25 A 1 Materials declaration ocococcccnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnenns 25 AZ Recycling IO NO AO Nina 25 nevion com 3 AVA MUX Rev C 1 Product overview The AVA MUX unit actually consists of three modules The AVA MUX C2 connector backplane The AAV SD XMUX T AES and Analog Audio Embedder with optical transmitter The ADC SDI composite decoder to SDI converter 1 1 AVA MUX C2 The AVA MUX backplane has all the necessary connections for the audio and video signals It also has all of the inter connections between the two processing cards There are passive loop through connectors for the analog video inputs Termination of the analog video inputs is also configurable on the back panel 1 2 AAV SD XMUX T The AAV SD XMUX is a highly integrated audio embedding module in the Flashlink range offering simultaneous embedding and de embedding of audio from an SD serial video signal In the AVA MUX application the AAV SD XMUX can De embed and embed all groups of audio Copy or move audio groups without additional delay De embed
11. GYDA if there is GYDA present The configuration will be stored when a GYDA configuration command is used Therefore if a GYDA is present the internal configuration will be overwritten by the GYDA controller The DIP switch settings control the routing and a couple of other important settings Other stored settings such as data embedding and generator settings will always be used 3 2 1 2 4 LED mode SW2 7 The switch controls how the two audio LEDs function If the switch is off the LEDs show the AES receiver status If the switch is on the LEDs show the presence of embedded groups 3 2 1 2 5 EDH insert SW2 8 SD video output from the module will only contain an EDH packet if SW2 8 is on 3 2 1 2 6 Fallback generator control SW3 7 This switch is used to control the outputs when the input signals are not present SW3 7 on The Video output will be disabled if the input signal is removed The AES outputs will be disabled if the source routed to that output is not present The input presence is embedded in the embedded audio data packet so that an AES input failure on a distant card will disable an AES output which uses audio embedded by that distant card SW3 7 off The internal video generator will be used as an input until a valid video signal is detected on one of the inputs The AES outputs without a source signal present will always be on but the signal will be silence 3 2 1 2 7 20 24 bit SD SW3 8 SD video will contain embed
12. The factory default is 115200 baud no parity one stop bit The data channel is encoded in the User bits in an embedded audio stereo signal assigned with GYDA The factory default is Audio channels 1 amp 2 in Group 1 The data is sampled asynchronously at a constant bit rate The range of baud rates that may be transmitted is from DC to 115 200 bps The data bytes are either encoded as packets in the transmitted data or transmitted as an asynchronous bit stream which may also be used to transmit a DC signal such as GPI nevion com 16 AVA MUX Rev C 3 2 3 3 De embedding The audio channel with the data signal to be de embedded must be configured by GYDA as there may be several data channels available The AAV SD XMUX will automatically detect the data channel format when present and output the data on the 8P8C Modular jack connector The output driver will only be active when data is output in UART mode The means that the output is always active when raw data is used 3 2 3 4 Limitations 1 There is one thing the user must do in order to receive embedded data The audio source where the data is embedded must be routed to a destination in the stereo router This is because the extraction of the data takes place on the output of the router Example Data is to be de embedded from embedded audio channels 1 amp 2 Route embedded audio channels 142 routed to output to Delay 4 2 The normal UART mode checks the data when receiving and onl
13. These are guidelines to limit hazards from laser exposure All the available EO and T units in the Flashlink range include a laser Therefore this note on laser safety should be read thoroughly The lasers emit light at wavelengths from 1270nm up to 1610nm This means that the human eye cannot see the beam and the blink reflex cannot protect the eye The human eye can see light between 400 nm to 700 nm A laser beam can be harmful to the human eye depending on laser power and exposure time Therefore Be careful when connecting disconnecting fiber pigtails ends Never look directly into the pigtail of the laser fiber Never use microscopes magnifying glasses or eye loupes to look into a fiber end Use laser safety goggles blocking light at 1310 nm and at 1550 nm Instruments exist to verify light output power Power meters IR cards etc Flashlink features All the laser module cards in the Flashlink product range are Class 1 laser products according to IEC 825 1 1993 and class according to 21 CFR 1040 10 when used in normal operation More details can be found in the user manual for the FR 2RU 10 2 frame Maximum output power 5 mW Operating wavelengths gt 1270 nm DANGER Y A INVISIBLE LASER RADIATION WHEN OPEN AVOID DIRECT EXPOSURE TO BEAM OUTPUT POWER lt 5mW WAVELENGTH gt 1270nm CLASS b LASER PRODUCT REF FDA CFR Ch 1 4 1 97 Ed 1040 10 3 Max power is for sa
14. ded audio with a word length of 24 bits if SW3 8 is on SD video will contain embedded audio with a word length of 20 bits if SW3 8 is off HD video will always contain embedded audio with a word length of 24 bits nevion com 14 AVA MUX Rev C 3 2 2 GYDA Control Full control of the stereo audio router is possible with the GYDA system controller Direct control with SNMP is available The module stores its routing configuration in non volatile memory when a GYDA command is given This allows complex configurations to be restored after a power loss The configuration is stored both in the card and in GYDA If the card must be replaced then GYDA will restore the configuration into the new card as long as SW1 8 is off If GYDA fails and there is a power glitch then the card will reboot with the stored settings If a GYDA system controller is present the last configuration of the module will be only be restored by GYDA if SW1 8 is off The intention is that SW1 8 is used to show that the card is manually configured when switched on 3 2 2 1 Audio delay lines The unit has four stereo audio delay lines connected to the audio router Audio to be delayed is routed to one of the delay inputs and the output of that delay is routed to the intended output The length of each delay line is set up on the configuration page of GYDA The maximum delay for each of the four delays is 16384 audio samples which is about 340ms The delay lines ma
15. ers Cr VI PBB PBDE ADC SDI O O O O O O AAV SD XMUX T O O O O O O O Indicates that this toxic or hazardous substance contained in all of the homogeneous materials for this part is below the limit requirement in SJ T11363 2006 X Indicates that this toxic or hazardous substance contained in at least one of the homogeneous materials used for this part is above the limit requirement in SJ T11363 2006 This is indicated by the product marking A 2 Recycling information Nevion provides assistance to customers and recyclers through our web site http www nevion com Please contact Nevion Customer Support for assistance with recycling if this site does not show the information you require Where it is not possible to return the product to Nevion or its agents for recycling the following general information may be of assistance Before attempting disassembly ensure the product is completely disconnected from power and signal connections All major parts are marked or labeled to show their material content Depending on the date of manufacture this product may contain lead in solder Some nevion com 25
16. fety analysis only and does not represent device performance nevion com 22 AVA MUX Rev C General environmental requirements for Nevion equipment 1 The equipment will meet the guaranteed performance specification under the following environmental conditions Operating room temperature range 0 C to 45 C Operating relative humidity range lt 90 non condensing 2 The equipment will operate without damage under the following environmental conditions Temperature range 10 C to 55 C Relative humidity range lt 95 non condensing nevion com 23 AVA MUX Rev C Product Warranty The warranty terms and conditions for the product s covered by this manual follow the General Sales Conditions by Nevion AS These conditions are available on the company web site of Nevion AS www nevion com nevion com 24 AVA MUX Rev C Appendix A Materials declaration and recycling information A 1 Materials declaration For product sold into China after 1st March 2007 we comply with the Administrative Measure on the Control of Pollution by Electronic Information Products In the first stage of this legislation content of six hazardous materials has to be declared The table below shows the required information Toxic or hazardous substances and elements Re Ej R ul AGE SRKE SRAM Part Name Lead Mercury Cadmium Hexavalent Polybrominated Polybrominated Pb Hg Cd Chromium biphenyls diphenyl eth
17. le has not Module is OK Module has no been triggered been power or FPGA programmed programming has failed or laser has failed SDI input Video signal Electrical video Optical video Module has not status absent signal present signal Present been programmed nevion com 20 AVA MUX Rev C Diode state Red LED Orange LED Green LED No light Audio status 1 n a n a Always on Module has not Switch 2 7 off A D converter is been always on programmed Audio status 2 Switch 2 7 off AES input 1 amp 2 not present Either AES input 1 or 2 present AES input 1 amp 2 both present Module has not been programmed Audio status 1 Switch 2 7 on Group 1 amp 2 not present Either group 1 or 2 present Group 1 8 2 both present Module has not been programmed Audio status 2 Switch 2 7 on Group 3 8 4 not present Either group 3 or 4 present Group 3 8 4 both present Module has not been programmed 5 3 GPI alarms Only three alarms are present on the 8P8C Modular jack connector as four of the pins are used for the RS422 data port The three alarms are Power present negative logic Video signal lost Laser failure An active alarm condition means that the transistor is conducting The power present alarm should always be active during normal operation nevion com 21 AVA MUX Rev C 6 Laser safety precautions
18. nals from de embedded group1 Group2 output is embedded with signals from the ADC inputs Group3 output is embedded with signals from AES1 amp 2 inputs nevion com 13 AVA MUX Rev C Group4 output is not embedded AES1 amp 2 outputs signals from de embedded group1 Users familiar with binary numbers may see that numbers 1 to 4 001 to 100 correspond to groups 1 to 4 3 2 1 2 Other DIP Switches 3 2 1 2 1 A D converter gain SW3 4 5 6 The A D input levels may be set to one of the eight preset levels The levels correspond to the maximum sine wave level otherwise known as 0 dBFS 12 13 5 15 16 7 18 20 21 or 24dBu All four input levels are set by the DIP switches in DIP configuration mode GYDA can set the levels for each stereo pair 3 2 1 2 2 Non SRC mode SW1 7 When SW1 7 and SW1 8 are on the sample rate converters will not be used The user must ensure that the AES input signals are locked to the video signal audio otherwise click noises will be produced in the embedded audio signals 3 2 1 2 3 DIP Configuration SW1 8 SW1 8 on forces the DIP switch configuration to be used If there is a GYDA present the switch configuration on the module will be used but the configuration will be monitored in the GYDA controller Control of the card parameters can not be changed with GYDA SW1 8 off will not use the DIP switches but will be configured from either the stored configuration in the module or from
19. nevien AVA MUX Analog Video and Audio Embedder to Fiber User manual Rev C Nevion nevion com AVA MUX Rev C Nevion Support Nevion Europe Nevion USA P O Box 1020 1600 Emerson Avenue 3204 Sandefjord Norway Oxnard CA 93033 USA Support phone 1 47 33 48 99 97 Toll free North America 866 515 0811 Support phone 2 47 90 60 99 99 Outside North America 1 805 247 8560 E mail supportOnevion com See http www nevion com support for service hours for customer support globally Revision history Current revision of this document is the uppermost in the table below Rev Repl Date Sign Change description C 2 2015 05 27 MB Template update DoC removed Total update following from replacing discontinued a 1 2009 03 20 NBS AAV MUX with new AAV SD XMUX 1 0 2007 10 15 AS New front page 0 2006 02 07 MDH First release of product nevion com 2 AVA MUX Rev C Contents T Produ OVEA pa A A A A di 4 Te AWA MU XE Ce a A A iia 4 12 AAV A cee re ae Rit ce ela ce a aes Bd ge eee 4 LS ADC SDI onc a ear del A nied Se RS ea ee aE 4 VA SIG Mel TOW eere e atk saeast ica a A REE academe E Ee Ae tact A EE ARAE ETE 5 2 Specifications rc ti rod oido ono ese 6 2 1 Measurement CONdItIONS ccccccccnncncnnnocononnnnnineninnnnnennnnnnnnnnnnnnnnnnnnnnnnnnnnn nr rr rr rn nr rrrrn 6 CAS IAN A AA IA ARA AS 6 E O 6 2 90 17 SD latencies AAV SD XAMU iii 6
20. nput The video standard of the generator may be set with GYDA but only if there is no video input present 3 2 3 Data transmission The module can de embed and embed asynchronous data An AES3 audio signal is used as a carrier Both embedded audio and normal AES3 signals may be used to carry the RS422 data The fiber connection usually only goes one direction so any desired return path must be created by the user with another circuit Return data may be sent over fiber via a link comprising of AV HD XMUX AAV HD XMUX AAV HD DMUX AES D422 or D422 MG modules The data input on the back panel works in one of two modes 1 UART Mode The data is checked for correct reception according to the configuration The data words are packaged and sent when present 2 Raw sampling mode The data input is sampled at 93 75 kHz and embedded as a data stream No checking is performed 3 2 3 1 Data latencies The data channel has a total latency of approximately 30us when using raw sampling Normal data rates of up to 9600 may be used with raw data sampling to have a low latency The latency is 500us when using the normal data encoding due to the block structure of the AES User bits The configuration of the data channel is always stored in the module and used regardless of the GYDA override switch 3 2 3 2 Embedding The AAV SD XMUX has a RS422 data input for the embedding of control data The baud rate and other parameters are configured with GYDA
21. p router is used to avoid this extra delay Groups that only pass through the group router are re embedded in the same video line This avoids any extra delay and means that incompatible audio formats asynchronous audio may still be transported The AAV SD XMUX automatically uses the group router whenever possible when controlled with the DIP switches nevion com 15 AVA MUX Rev C Shuffling of groups is when existing embedded audio groups are re assigned to different groups Copying of groups is also possible e Group 1 may be transported to Group 1 and duplicated to Group 2 This function also takes place in the group router which means that there is no extra delay 3 2 2 5 Audio generator The stereo audio generator is available in the audio router as a source lt is a high purity 1 kHz sine wave with a 250ms interruption on the left channel every 3 seconds The audio level may be set to one of two standards The two levels are 18 dBFS and 20 dBFS These two levels correspond to EBU R68 and SMPTE RP 155 3 2 2 6 Video generator The video generator has several different simple signals Color bar 100 white 75 colors no set up level Red Green Blue or Black full field The generator may be used as a backup video source if there is no video signal present at either of the video inputs The generator may also be switched on with GYDA This will override video input but the generator signal will be locked to the i
22. time 1 THD N of 60 dBFS 1 kHz signal 60 Rev C 4 48 kHz 24 kohm 50 kohm DB 25F Female with UNC threads 12 13 5 15 16 7 18 20 21 or 24dBu 0 1dB where Zsource lt 40 ohm 30V Maximum peak signal level 20 Hz 20 kHz 0 1 dB 0 005 dB 80 dB Min 103 dB A typical 107 dB A Max 90 dB typical 96 dB Max 90 dB typical 95 dB Max 90 dB typical 99 dB Max 70 dB 15 kHz typical 90 dB low frequencies 2 30 kHz to 200 kHz converted to 48 kHz if not 48 kHz and isochronous to the video input signal 110 ohms transformer balanced DB 25F Female with UNC threads 20 or 24 bits As received when isochronous otherwise fixed 139 dB A O 1kHz 1 8P8C Modular jack 9600 to 115200 7 or 8 bits None odd or even 1 1 5 or 2 bits 93750 Hz 270Mbps 1 BNC 75 ohms gt 15dB 270MHz nominal 800mV typically 650ps Signal at 12 dBFS SMPTE 4 1 60 Hz 7 kHz nevion com 7 AVA MUX 2 5 2 Optical output Transmission circuit fiber Optical wavelength ver 13T Optical power Optical power option Optical wavelength ver 15T Optical power Optical wavelength ver C1xxx Optical power Jitter Ul unit interval Return loss Maximum reflected power Connector 2 5 3 Digital Audio outputs Number of AES3 outputs Audio data rate Impedance C1 backplanes Connector C1 backplanes 2 5
23. ts NTSC adaptive comb with filter coefficients Ye O 1 2 PAL adaptive comb with filter coefficients 1 4 Ya 1 4 1 O Fixed 2 line comb filter 1 1 Luminance filtered with chroma trap notch Chroma low pass filtered OO 3 1 1 6 Restore factory settings DIP switch 8 should be used if the card is to be reset to the factory configuration This will also reset the delay parameters to zero The card is reset when the card is powered up with this switch set ON DIP switch 8 should be set back to the OFF position and the card should then be reset The reset button at the front of the card may be used instead of removing the card or switching the power supplies on and off nevion com 10 AVA MUX Rev C 3 1 1 7 Reserved switches DIP switch 9 is reserved for future use and should be in the OFF position DIP switch 10 chooses programming or run mode and should always be in the ON position 3 1 2 Monitoring and control of ADC SDI with Gyda The Gyda controller card receives information about the configuration and the operating status of the card The displayed information includes Slot label set on configuration page Firmware and FGPA versions Input video mode Input status EDH generation status Field 1 marking status Filter mode Alarms The configuration page allows control of the following configuration parameters
24. uch as Dolby E will always be embedded transparently without using the sample rate converters All embedding and de embedding is performed with synchronous 48 kHz audio nevion com 5 AVA MUX 2 Specifications 2 1 Measurement conditions Audio Sampling rate Ambient temperature Measurement bandwidth Detector Input overload level 0 dBFS 2 2 General Power AAV SD XMUX Power ADC SDI Control Monitoring EDH processing Embedding level Embedded audio word length Video processing word length Total Audio Delay Total Video Delay 2 3 Processing Rev C 48 kHz 25 C 20 Hz 20 kHz RMS 18 dBu 5V DC 0 7A 3 5W 15V DC 0 017A 0 5W 5V DC 0 44A 2 2W 15V DC 0 0464 0 7W DIP switches Gyda system controller Front panel LED s and GYDA system controller Full Received flags are updated new CRCs are calculated SMPTE S272M C Synchronous audio at 48 kHz and extended data packets 24 bit optional Configurable 20 or 24 bits 10 bits Video latency is variable due to the de glitcher but the values below apply when the video signal is first applied Other latency values are maximum values 2 3 1 SD latencies AAV SD XMUX des 4 350 256 2 ser video samples 45 3us AES 2 1 16 audio samples 20 48000 417us 4 16 1 audio samples 21 48000 438us 8 4 32 96kHz samples 44 96000 458us 32 128 17 16 96kHz samples 193 96000 2 01ms 8 32 8 96kHz samples 44 96000
25. uration ATTENTION The switch settings are only read when the module is powered up 3 2 1 1 Routing Full hardware control of all of the parameters in the module would require either a complicated menu type of control interface with a display and control buttons or an enormous number of switches In many cases most of the parameters will not be changed from the default settings It was decided to control only the most used parameters with switches This still requires the use of 24 switches The switches are only read if SW1 8 DIP configuration mode is in the on position There are not enough switches on the module to allow full stereo routing configurations Groups of four channels are routed together as units for example AES input channels 1 amp 2 embedded audio group 1 3 2 1 1 1 Destinations Table 1 Routing control switches swi SW2 SW3 Groupi Group2 Group3 Group4 AES1 amp 2 ADC Gain IA 2 3 4 5 6 7 83 MINS ES The switches control the routing of signals to the outputs or destinations There are four embedded audio groups and one pair of AES outputs The configuration assigns sources to output groups and the pair of AES outputs This allows the same input signals to be routed to several outputs There is a group of three switches for each of the outputs The combination of the three switches set the input source or disables the output e g
26. y be cascaded if longer delays are required 3 2 2 2 Stereo audio processing The output of each stereo signal may be manipulated LL RR LR RL OLR LOR L R 2 MS this is controlled with the GYDA controller The stereo signals may be output in one of the following ways LR Left Right No change RL Right Left Channels are swapped LL Left Left Left channel is copied into the right channel RR Right Right Right channel is copied into the left channel LR OLeft Right The left channel is phase inverted LOR Left ORight The right channel is phase inverted L R 2 Left Right The left and right channels are summed MS MS AB The left and right channels are converted from AB stereo to MS stereo The sum products L R 2 and MS are reduced in level by 6 dB to avoid any possibility of clipping 3 2 2 3 RS422 Data port configuration The RS422 data 8P8C Modular jack input must be configured with GYDA The baud rate data length parity and stop bits must be configured if UART mode is used The router destination where the data is to be embedded must be set up and the source channel containing the received data that will be output on the 8P8C Modular jack must be also be configured See further Chapter 3 2 3 3 2 2 4 Transport and shuffling of audio groups The AAV SD XMUX stereo audio router involves de embedding buffering and re embedding which introduces a small delay relative to the video signal The grou
27. y embeds valid bytes The data format must be correct This also means that a BREAK condition of many spaces will not be detected or transmitted Contact support if this is a requirement nevion com 17 AVA MUX 4 Connections Rev C A 25 pin d sub type connector is provided for the audio outputs The pin configuration used is the industry standard TASCAM DA 88 type so that commercially available snakes may be used 4 1 Audio connections DB25 nput A A nput 0D nv WA oO KF WN BF 3 U E D J ny O Q E D A nput JO 17 18 19 2 21 22 23 24 25 O 0 00 OJO O O 0 0 O 0 0 OO 4 5 6 27 8 39 10 11 12 5 16 OO O 3 14 1 O 00 1 2 1 1 1 En Ea Figure 5 D sub 25 audio connector wiring Pin Signal Pin Signal 1 2R 14 2R 2 2R GND 15 2L 3 2L 16 2L GND 4 1R 17 1R 5 1R GND 18 1L 6 1L 19 1L GND 7 AES 2 OUT 20 AES 2 OUT 8 AES 2 OUT GND 21 AES 1 OUT 9 AES 1 OUT 22 AES 1 OUT GND 10 AES 2 IN 23 AES 2 IN 11 AES 2 IN GND 24 AES 1 IN 12 AES 1 IN 25 AES 1 IN GND 13 GND nevion com 18 AVA MUX 4 2 GPI Data connections 8P8C Jack oooO N 0 QU BR Figure 6 Pin layout 8P8C Modular jack Pin number Description Power present
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