Analogue audio embedder

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1 Flashlink User Manual AAV-MUX Analogue audio embedder network-electronics.com Rev. 2

2 AAV-MUX Rev. 2 Network Electronics ASA Thorøya P.O. Box 1020 N-3204 Sandefjord, Norway Phone: Fax: support@network-electronics.com Support Phone: Revision history Current revision of this document is the uppermost in the table below. Rev. Repl. Date Sign Change description AS Added Materials Declaration and EFUP; updated EC Declaration of Conformity Updated CWDM laser options GPI spesifications, GPI pinning, layout. network-electronics.com 2

3 Index 1 INTRODUCTION SPECIFICATION Measurement conditions General Inputs Video Input: Audio Inputs: Outputs SDI Output Optical Output GPI DETAILED DESCRIPTION CONFIGURATION DIP switches Input gain Group selection / no EDH Monitoring the status with Gyda LIMITATIONS CONNECTOR MODULES AV-MUX-C GPI Control Connections MODULE STATUS LED Overview LASER SAFETY PRECAUTIONS DECLARATION OF CONFORMITY WITH CE ENVIRONMENTAL REQUIREMENTS FOR NETWORK FLASHLINK EQUIPMENT

4 1 Introduction The AAV-MUX card is a four audio channel, analogue audio embedder card for serial digital video. It is one of the Flashlink series of modules, providing a compact and cost effective solution for the transport of digital video and audio over single and multi mode optical fibre. 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. The CWDM and the 1550nm lasers and have output powers of 0 dbm while the 1310nm laser has an output power of -7.5dBm. This corresponds to the Flashlink range of SDI- EO, electrical to optical converter cards. Audio2R Audio2L Audio1R Laser Audio1L SDI EDH processor Embedder Serialiser SDI Figure 1 AAV-MUX Block diagram 4

5 2 Specification 2.1 Measurement conditions Sampling rate 48 khz Ambient temperature 25ºC Measurement bandwidth 20 Hz-20 khz Detector RMS Input overload level (0dBFS) +18 dbu 2.2 General Power: +5V DC 0.51A 2.6W, +15V DC 0.063A 0.95W Control: DIP switches, Gyda system controller. Monitoring: Front panel LEDs and Gyda system controller. EDH processing: Full. Received flags are updated, new CRCs are calculated. Embedding level SMPTE S272M C Synchronous audio at 48 khz and extended data packets (24 bit optional). Embedded audio word length: Configurable 20 or 24 bits. Audio delay 0.79 ms Video delay 2.3 µs 2.3 Inputs Video Input: Video Data rate: Video frame rate: Equalisation: Impedance: Return loss: Signal level: Connector: 270Mbps 50 Hz or 60 Hz. Automatic up to 35dB 75Ω nominal. 800mV BNC Audio Inputs: Number of analogue inputs: 4 Audio sampling frequency: 48 khz Differential Impedance: 25kΩ electronically balanced. 5

6 Connector: 25 pin D-sub. Maximum signal level: Configurable +12dBu to +24dBu (=0dBFS) Common mode voltage tolerance ±50 V Frequency response 20 Hz 20 khz 0.1 db Passband ripple ±0.035 db Stop band attenuation 95 db Dynamic range 1 Min. 101 db(a) (0 dbfs = +12 dbu) Typ. 107 db(a) -1 db FS Max. -85 db Typ. < -95 db Intermodulation distortion - 12 db FSMax. -90 db Crosstalk Typ. -95 db Max. -90 db CMRR (20 Hz 500 Hz) Typ.> 60 db (500 Hz 20 khz) Typ.> 80 db 2.4 Outputs SDI Output Number of SDI outputs: 1 Connector: BNC Impedance: 75 ohm Return loss: > Signal level: nominal. 800mV. Rise/fall time: typically 650ps Optical Output Transmission circuit fibre: Light source: Optical wavelength (13T): Optical power: Optical power (option): Optical wavelength (15T): Optical power: Single Mode F-P/DFB Laser 1310nm ±40nm -7.5 dbm 0 dbm 1550nm ±40nm 0 dbm 1 (THD+N of 60 db FS signal) SMPTE 4:1 60 Hz + 7 khz 6

7 Optical wavelength (C1nn0): 1270, 1290, 1310, 1330, 1350, 1370, 1390, 1410, 1470, 1490, 1510, 1530, 1550, 1570, 1590 or 1610nm ±6nm as per ITU-T G Optical power: 0 dbm Jitter (UI=unit interval): Max UI Return loss: Typ. > 40 db Maximum reflected power: 4% Connector: SC/UPC GPI GPI Output: GPI Connector: Signal type: Maximum voltage: Maximum current: Power good, SDI unlock, Embed error, Audio overload1, Audio overload2. RJ45 Open collector transistor. 50 V 400 ma if only one output driven, 100 ma all outputs driven. 3 Detailed Description The digital video passes through the receiver and the EDH information is processed in the de-serialiser. It then is passed to the embedding processor. The video signal is then re-serialised and sent to the electrical and optical outputs. The analogue audio inputs go to electronically balanced inputs which reduce the input level by 12dB. The next stages change the level according to the configured gain setting and send the resulting signals to the input of the A/D converters. 4 Configuration 270 Mbit digital video may have up to four audio groups which are numbered 1 to 4. Each audio group has four mono audio channels or two stereo audio signals. The AAV-MUX works with a single audio group. Digital VTRs usually embed audio in group 1. Embedding on audio group 1 with the AAV-MUX should be used if the original audio is absent, or is to be replaced. Use another group number if extra audio is to be embedded. NOTE! The AAV-MUX removes all existing audio when embedding on group 1. Embedding on other audio groups appends (adds) the new group to the existing embedded audio. 7

8 4.1 DIP switches The configuration of the card sets a number of parameters: - The input gain for the A/D converters. The audio group number to be embedded. Whether to embed the audio with 20 or 24 bits. Whether the output SDI should contain EDH information Input gain The A/D converter has a defined overload level which can be configured with the gain switches. The card has two eight-way miniature DIP switches located near the front of the card. Groups of 3 switches control the input gain of the analogue inputs. Switches marked 1L and 1R control the levels for converter 1 while switches marked 2L and 2R control the levels for converter 2. The settings for the level switches are presented in the following table. The table is also printed on the AAV-MUX card. 0 corresponds to off. 1 corresponds to on. The three numbers in the top row should be read as: S2,S1,S0. Switches dbfs 23,9 22,8 21, , Example: S1 off, S0 on and S2 on gives a maximum input level of +18 dbu Group selection This DIP switch may be used to assign the group number to the embedder processor. The group number is then set by the combination of the two group switches, as shown in the following table. The table is also printed on the AAV- MUX card Group Switch G1 Switch G /24 This switch is used to select the embedded audio word length. Embedded audio is encoded as 20 bits + 4 bits. This switch switches off the encoding of the last four bits. Some older video equipment cannot tolerate the extra 4 bits no EDH This switch controls whether the EDH packet is embedded or not. Some older video equipment cannot tolerate the presence of the EDH packet. The card will remove an existing EDH packet only if audio group 1 is selected, as the card completely erases all ancillary data before embedding in this mode. The card has no way to remove EDH packets if a group other than 1 is selected but it will not insert new packets if the switch is on. For example, if group 2 is selected, 'no EDH' switch is on and the incoming video contains an EDH packet, the 8

9 output video will contain a valid, updated EDH packet. If the input video does not contain an EDH packet then the output video will also not contain an EDH packet. Figure 2 Configured for +18 dbu overload level, embedding on group 1, 24 bit audio with EDH Monitoring the status with Gyda The Gyda controller card receives information about the configuration and the operating status of the card. The displayed information includes: - Slot label Power voltages Video signal margin Video format Audio group Audio 24 bit configuration Laser status (if applicable) EDH flags EDH processing status Alarm status Firmware version (on configuration page) Gyda can be also used to switch the laser on or off if the fibre requires attention. The control buttons only appear on the page when they are relevant. 5 Limitations If the AAV-MUX is used to embed in audio group 1, all existing packets will be 9

10 removed. The embedding processor does not read the any existing audio and begins to embed audio as soon as it finds any vacant space. It will embed an audio group 2 even if there is already one already present in the video. The result will be not be de-embedded correctly. Removed audio groups when de-embedding will leave 'holes' in the embedded audio and the AAV-MUX will start embedding as soon as any of these holes are encountered. This may result in the corruption of other audio groups which are still present after the 'holes'. This does not apply if Network embedding products were used to embed audio as they all use the same packet distribution. 6 Connector modules The AAV-MUX card may be used with both the AV-MUX-C1 and the AAV- DMUX-C1. The two backplanes have the same external connections so only the AV-MUX-C1 is described here. 6.1 AV-MUX-C1 Figure 3 AV-MUX-C1 Connector module. The AV-MUX-C1 connector card has a D-sub 25 pin connector with UNC threads for the audio signals. The pin configuration is similar to the TASCAM DA-88 connector. The configuration is shown in the figure below. The video 10

11 input and output connectors are BNCs. The RJ45 connector is used for alarms. 11

12 inputs 1L 1R 2L 2R gnd cold gnd hot cold gnd hot cold gnd hot cold gnd hot Figure 4 Audio connector configuration. 12

13 6.2 GPI Control Connections Pin Function 1 Card has correct power. 2 The card has not locked to any input SDI 3 An error has occurred in the de-embedding process 6 Audio 1L or 1R is overloading the A/D converter 7 Audio 2L or 2R is overloading the A/D converter 8 0 volt pin 7 Module Status The status of the module can be easily monitored visually by the LED s at the front of the module. The LED s are visible through the front panel as shown in the figure below. AAV-MUX Card status Video status Audio1 clip Audio2 clip Figure 5 LED overview of AAV-MUX (Text not printed on the front panel).the AAV-MUX has 4 LED s. The colours of each of the LED s have different meanings as shown in the table below. 7.1 LED Overview Diode \ state Red LED Orange LED Green LED No light Card status PTC fuse has been Module has not Module power ismodule has no triggered - remove the module. been programmed OK power Video status Video signal absent. n/a SDI input Present Audio1 clip Audio overload n/a No overload Audio2 clip Audio overload n/a No overload 13

8 Laser safety precautions Guidelines to limit hazards from laser exposure. The AV-MUX units in the flashlink range have a laser option. Therefore this note on laser safety should be read thoroughly.

(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:!

14 8 Laser safety precautions Guidelines to limit hazards from laser exposure. The AV-MUX units in the flashlink range have a laser option. Therefore this note on laser safety should be read thoroughly. The lasers emit light at wavelengths around 1310 nm or 1550 nm. This means that the human eye cannot see the beam, and the blink reflex can not 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 , and class I according to 21 CFR 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: > 1270 nm. * Max. power is for safety analysis only and does not represent device performance. 14

15 AAV-MUX Rev. 2 General environmental requirements for Network Electronics equipment 1. The equipment will meet the guaranteed performance specification under the following environmental conditions: - Operating room temperature range: 0 C to 50 C - Operating relative humidity range: <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: <95% (non-condensing) network-electronics.com 15

16 AAV-MUX Rev. 2 Product Warranty The warranty terms and conditions for the product(s) covered by this manual follow the General Sales Conditions by Network Electronics ASA. These conditions are available on the company web site of Network Electronics ASA: network-electronics.com 16

17 AAV-MUX Rev. 2 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 組成名稱 Part Name 鉛 Lead (Pb) 汞 Mercury (Hg) 镉 Cadmium (Cd) 六价铬 Hexavalent Chromium (Cr(VI)) 多溴联苯 Polybrominated biphenyls (PBB) 多溴二苯醚 Polybrominated diphenyl ethers (PBDE) AAV-MUX X 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/T 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/T A.2 Environmentally-friendly use period The manual must include a statement of the environmentally friendly use period. This is defined as the period of normal use before any hazardous material is released to the environment. The guidance on how the EFUP is to be calculated is not finalised at the time of writing. See for an unofficial translation of the draft guidance. For our own products, Network Electronics has chosen to use the 50 year figure recommended in this draft regulation. Network Electronics suggests the following statement on An Environmentally Friendly Use Period (EFUP) setting out normal use: EFUP is the time the product can be used in normal service life without leaking the hazardous materials. We expect the normal use environment to be in an equipment room at controlled temperature range (0ºC - 40ºC) with moderate humidity (< 90%, non-condensing) and clean air, not subject to vibration or shock. Further, a statement on any hazardous material content, for instance, for a product that uses some tin/lead solders: Where a product contains potentially hazardous materials, this is indicated on the product by the appropriate symbol containing the EFUP. The hazardous material content is limited to lead (Pb) in some solders. This is extremely stable in normal use and the EFUP is taken as 50 years, by comparison with the EFUP given for Digital Exchange/Switching Platform in equipment in Appendix A of General Rule of Environment-Friendly Use Period of Electronic Information Products. This is indicated by the product marking: 50 It is assumed that while the product is in normal use, any batteries associated with real-time clocks or battery-backed RAM will be replaced at the regular intervals. network-electronics.com 17

18 AAV-MUX Rev. 2 The EFUP relates only to the environmental impact of the product in normal use, it does not imply that the product will continue to be supported for 50 years. A.3 Recycling information Network Electronics provides assistance to customers and recyclers through our web site Please contact Network Electronics 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 Network Electronics 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 labelled to show their material content. Depending on the date of manufacture, this product may contain lead in solder. Some circuit boards may contain battery-backed memory devices. network-electronics.com 18

order to verify compliance with Directive(s) Network Electronics ASA P.B.

19 AAV-MUX Rev. 2 EC Declaration of Conformity MANUFACTURER AUTHORISED REPRESENTATIVE (Established within the EEA) MODEL NUMBER(S) DESCRIPTION DIRECTIVES this equipment complies with HARMONISED STANDARDS applied in order to verify compliance with Directive(s) Network Electronics ASA P.B. 1020, N-3204 SANDEFJORD, Norway Not applicable AAV-MUX Analogue audio de-embedder LVD 73/23/EEC EMC 89/336/EEC EN :1996 EN :1996 EN :2006 TEST REPORTS ISSUED BY Notified/Competent Body Report no: TECHNICAL CONSTRUCTION FILE NO YEAR WHICH THE CE-MARK WAS AFFIXED TEST AUTHORIZED SIGNATORY MANUFACTURER Nemko Not applicable 2006 AUTHORISED REPRESENTATIVE (Established within EEA) Not applicable Date of Issue Place of Issue Sandefjord, Norway Name Position Thomas Øhrbom Quality Manager (authorised signature)

Analogue audio de-embedder

Flashlink User Manual AAV-DMUX Analogue audio de-embedder network-electronics.com Rev.3 AAV-DMUX Rev. 3 Network Electronics ASA Thorøya P.O. Box 1020 N-3204 Sandefjord, Norway Phone: +47 33 48 99 99 Fax: