Analogue audio de-embedder

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1 Flashlink User Manual AAV-DMUX Analogue audio de-embedder network-electronics.com Rev.3

2 AAV-DMUX Rev. 3 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 Improved optical sensitivity specification, typos Style, gain switch examples and group switch names in table corrected GPI specifications, GPI pinning, layout. network-electronics.com 2

3 Index 1 REVISION HISTORY..2 2 INTRODUCTION..4 3 SPECIFICATION Measurement conditions General Inputs Video Input: Optical Input: Outputs SDI Output Audio Outputs: GPI..6 4 DETAILED DESCRIPTION..6 5 CONFIGURATION DIP switches Output gain No EDH insert Remove audio Group Selection Monitoring the status with GYDA LIMITATIONS..9 7 CONNECTOR MODULES GPI Control Connections MODULE STATUS LED Overview LASER SAFETY PRECAUTIONS DECLARATION OF CONFORMITY WITH CE ENVIRONMENTAL REQUIREMENTS FOR NETWORK FLASHLINK EQUIPMENT

4 2 Introduction The AAV-DMUX card is an analogue audio de-embedder card for serial digital video for four audio channels. 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 mode optical fibre. The card has a serial digital video input and a serial digital video output. There is an optional optical input which will be used automatically if an optical signal is present. When the optical option is present, the card switches automatically between the two inputs looking for a valid signal. The first valid signal found will be used until lock is lost, then the other input will be tried etc. This makes redundant fibre feeds easy to implement with just an extra SDI-OE card. The optical receiver is compatible with both single and multi-mode optical fibre and may be used as a receiver in point to point, CWDM and DWDM configurations. The analogue audio outputs can be configured for different output levels. The maximum level can be set to levels between +12 dbu and +24 dbu. All audio outputs have independent outputs which are electronically balanced. Audio2R Audio2L Optical input Audio1R Audio1L SDI Reclocker deserialiser Embedder Serialiser SDI Figure 1 AAV-DMUX Block diagram 3 Specification 3.1 Measurement conditions Sampling rate 48 khz Ambient temperature 25ºC Measurement bandwidth 20 Hz-20 khz Detector RMS Output overload level (0 dbfs) +18 dbu 4

5 3.2 General Power: Control: +5V 480mA 2.4W, +15V 100mA 1.5W, -15V 46mA 0.7W DIP switches, GYDA system controller. Monitoring: Front panel LED s and GYDA system controller. EDH processing: De-embedding level Audio Delay: Video Delay: 3.3 Inputs Full. Received flags are updated, new CRCs are calculated. SMPTE S272M C Synchronous audio at 48 khz and extended data packets 0.67 ms (12+20 audio samples) 2.1us 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 75 ohm nominally 800mV BNC Optical Input: Transmission circuit fibre: Optical wavelength: Maximum Optical power: Minimum Optical power: Return loss: Multi-mode 50/120 um nm ±40 nm 0 db Maximum reflected power: 4% Connector: 3.4 Outputs SDI Output Number of SDI outputs: 1 Connector: Impedance: Return loss: Signal level: better than -25 dbm, -28 dbm typ. better than 40 db typ. SC/UPC BNC 75 ohm > nominally 800mV. 5

6 Rise/fall time: typically 650ps Audio Outputs: Number of analogue outputs: Audio sampling frequency: Impedance: Connector: 4 electronically balanced. 48 khz 50 ohm differential, 5 kohm common mode 25 pin D-sub. De-embedded audio wordlength: Up to 24 bits. Frequency response: 1 Dynamic range: 2 0 dbfs: Intermodulation distortion: 3 Crosstalk: Noise: 20 Hz 20 khz > 106 db(a) better than 0.01%, -80 db better than 0.01%, -80 db < -90 db < -75 dbqp CCIR-468 weighted < -90 dbu A-weighted GPI GPI Output: GPI Connector: Signal type: Maximum voltage: Maximum current: outputs driven. Power good, SDI unlock, de-embed error, audio A invalid, audio B invalid. RJ45 Open collector transistor. 50 V 400 ma if only one output driven, 100 ma all 4 Detailed Description The digital video comes either through the receiver or the optical receiver. EDH information is processed in the de-serialiser and the signal passes to the to the deembedding processor. The video signal is then re-serialised and sent to the electrical output. Digital audio comes from the de-embedding processor and goes to the D/A converters. The gain is adjusted before the audio is fed to each of the outputs. 1±0.1 db relative to the level at 500 Hz dbfs A-weighted SMPTE IM, 60 Hz + 7 khz -12 dbfs (RMS) 6

7 5 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-DMUX works with a single audio group. Digital VTRs usually embed audio in group DIP switches The configuration of the card sets a number of parameters: - The output gain for the D/A converters. The audio group number to be de-embedded. Whether to remove the audio group from the SDI signal. Whether EDH information is inserted into the output SDI video Output gain The D/A converter has a defined maximum level which can be configured with the gain switches. The card has two eight-way miniature DIP switches on the card. Groups of 3 switches control the gains of each of the analogue outputs. 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-DMUX 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, ,4 20,1 19, Example: S0 and S2 off, S1 on gives a maximum input level of +18 dbu. (see figure on the next page) No EDH insert This switch is used to select whether the de-embedder processor inserts a new EDH packet into the output video if EDH was not present on the input. The card cannot remove an EDH packet if it is already present. Existing EDH packets are always updated. Some old video equipment cannot tolerate the presence of EDH. 7

8 Figure 2 Configured for +18 dbu overload level and embedding on group Remove audio This switch is used to select whether the de-embedder processor removes the embedded audio from the output video. Some old video equipment cannot tolerate the presence of embedded audio and will appear to lose vertical synchronisation Group Selection These two DIP switches may be used to assign the group number to the deembedder processor. The group number is set by the combination of the two group switches, as shown in the following table. The table is also printed on the AAV-DMUX card Group Switch G1 Switch G 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 Input switch status Optical signal level Video signal margin Video format Audio de-embedding status 24 bit audio status EDH flags Audio removal status Software version (configuration page) 8

9 6 Limitations Removing the audio group when de-embedding will only remove the audio group to which the card is configured to read. This may leave 'holes' in the embedded audio. Embedding audio into the video signal after removing the audio will start embedding as soon as any of these holes are encountered. This may result in the corruption of other audio groups which were 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. 7 Connector modules The audio connector on the backplane is a 25 pin female d-sub connector with UNC threads. The video input and output connectors are BNCs. The RJ45 connector is used for alarms. Figure 3 AAV-DMUX-C1 Connector module. The Alarm outputs are active low open collector outputs. The signal connections are shown in the figures on the next page. CAUTION:The AAV-DMUX card may not be used with an AV-MUX-C1 connector card. Though no damage will result and an audio signal will be de-embedded, the audio signals will be distorted or silent. 9

10 outputs 1L 1R 2L 2R gnd gnd cold hot gnd cold hot gnd cold hot gnd cold hot Figure 4 Audio connector configuration. 7.1 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 1 signal is invalid. 7 Audio 2 signal is invalid 8 0 volt pin Most of the alarms are active during an alarm condition, i.e. the transistor conducts. Pin 1 uses an inverse logic and the transistor conducts while the card has correct power. This allows the detection of a power failure. 10

11 8 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-DMUX Card status Video status AES1 status AES2 status Figure 5 LED overview (Text not printed on the front panel).the AAV-DMUX has 4 LED s. The colours of each of the LED s have different meanings as shown in the table below. 8.1 LED Overview Diode \ state Red LED Orange LED Green LED No light Card status PTC fuse has been triggered - remove the module. Module has not been programmed Module power is OK Module has no power Video status Video signal absent. SDI input in use* Optical input in use Audio 1 Audio invalid Audio is valid status Audio 2 status Audio invalid Audio is valid *Some modules show green when either SDI or optical input is in use. 11

12 9 Laser safety precautions These are guidelines to limit hazards from laser exposure. The AV-MUX and AAV-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 from 1200nm up to 1620nm. 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 fibre pigtails (ends). Never look directly into the pigtail of the laser/fibre. Never use microscopes, magnifying glasses or eye loupes to look into a fibre 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 1 : 5 mw Operating wavelengths: > 1270 nm 1 Max power is for safety analysis only and does not represent device performance. network-electronics.com 12

13 AAV-DMUX Rev. 3 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 13

14 AAV-DMUX Rev. 3 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 14

15 AAV-DMUX Rev. 3 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-DMUX 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 15

16 AAV-DMUX Rev. 3 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 16

17 AAV-DMUX Rev. 3 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-DMUX 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 embedder

Flashlink User Manual AAV-MUX Analogue audio embedder network-electronics.com Rev. 2 AAV-MUX Rev. 2 Network Electronics ASA Thorøya P.O. Box 1020 N-3204 Sandefjord, Norway Phone: +47 33 48 99 99 Fax: +47