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AV-3G-XMUX
User Manual
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Nevion AV-3G-XMUX User Manual

nevion.com
AV-3G-XMUX
User Manual
Revision: B
2015-04-07
Contents
1 Nevion Support 5
2 Revision History 6
3 Product Overview 7
3.1 Summary 7
4 Introduction 8
4.1 Extra 3G functions 8
4.2 Signal flow 9
4.3 Asynchronous data transport 9
4.4 Audio output muting 10
4.5 Top view 10
5 Specifications 11
5.1 SD HD and 3G SDI 11
5.2 AES3 audio 12
5.3 Asynchronous Data 13
5.4 GPI input/alarms 14
5.5 Latencies 14
6 Configuration 16
6.1 DIP switch routing 17
6.2 Other DIP Switches 20
6.3 DIP configuration examples 22
6.4 Multicon GYDA 24
6.4.8.1 Time code auto display 29
6.4.9.1 Data transmission 30
6.4.9.2 Data latencies 31
6.4.9.3 Embedding 31
6.4.9.4 De-embedding 32
6.4.9.5 Limitations 32
7 Connections 33
7.1 AV-3G-XMUX-C1 33
7.2 AV-3G-XMUX-C2 33
7.3 AV-3G-XMUX-C3 34
7.4 DB-25 34
7.5 Modular jack 8P8C 35
8 LEDs 36
8.1 Status LED 36
8.2 SDT Input LED 36
8.3 AES LEDs 36
9 GPI alarms 38
9.1 Laser kill GPI3 input 38
10 General environmental requirements 39
11 Product Warranty 40
A Materials declaration and recycling information 41
A.1 Materials declaration 41
A.2 Recycling information 41
Nevion Support 5
1 Nevion Support
Nevion Europe Nevion USA
Nevion Europe
P.O. Box 1020 3204
Sandefjord, Norway
Nevion USA
1600 Emerson Avenue Oxnard,
CA 93033, USA
Support phone 1:
+47 33 48 99 97
Support phone 2: +47 90 60 99 99
Outside North America: +1 (805) 247-8560
Toll free North
America: (866) 515-0811
E-mail: support@nevion.com See http://www.nevion.com/support/ for service hours for customer support globally.
AV-3G-XMUX User Manual Rev. B
Revision History 6
2 Revision History
Rev. Date Comments
B 2015-03-02 Removed mixer references. Added reference to the mono shuffler block. TMLed. Added
Multicon figures.
1 2011-10-20 Changed optical overload.
0 2011-08-25 First revision
AV-3G-XMUX User Manual Rev. B
Product Overview 7

3 Product Overview

3.1 Summary
• SD, HD and 3D digital uncompressed video.
• De-embed and embed all groups of audio.
• Copy or move audio groups without additional delay.
• De-embed 8 AES3 digital audio and non-audio signals.
• Embed 8 AES3 digital audio and non-audio signals.
• Applies sample rate converters on the AES inputs when needed.
• Mono shuffle four signals.
• Optical laser output options, including CWDM and DWDM.
• Optical input option.
• Transport of asynchronous serial data.
• Generates video and audio signals including on screen label generator.
• De-glitches correctly synchronized switched video.
AV-3G-XMUX User Manual Rev. B
Introduction 8

4 Introduction

The AV-3G-XMUX is a highly integrated audio embedding module in the Flashlink range, offering simultaneous embedding and de-embedding of eight AES3 stereo digital audio channels from a digital 3G, HD or SD serial video signal.
The 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 AV-3G-XMUX audio core is an AES3 audio router. The received embedded audio and the AES3 inputs are the sources in the router. The embedded output groups and AES3 outputs are the destinations. This feature may be used to perform stereo channel swapping.
A mono shuffler is integrated into the stereo router. The sources to the shuffler are the same sources as in the stereo router. The outputs from the shuffler provide four extra stereo sources in the audio router. Each shuffler output has a configurable delay up to 1.37s.
There are 8 AES ports and each may be used as either an input or an output. The sample rate converters may be inserted by the module when needed, or the user can disable them. Data signals such as Dolby E will always be embedded transparently without using the sample rate converters.
All embedding and de-embedding is with synchronous 48 kHz audio.
The unit may be ordered with optical transmitter and receiver options. The laser options range from the standard -7.5dBm 1310nm to the DWDM units. The receiver may be PIN.
The module has signal generators for audio and video for test and line-up applications. The in­ternal video generator may be used as a fall-back source that is used if the both the electrical and the optical input signals fail. This allows uninterrupted transmission of embedded audio.

4.1 Extra 3G functions

AV-3G-XMUX will process the extra 8 audio pairs in 3G SDI.
The module has two different user interfaces in the Gyda System Controller. The ’Large mode’ is used if the additional audio in the 3G video signals are to be used.
The ’small’ mode represents the module in a similar way to the other Nevion XMUX embedders and only shows the traditional audio groups 1 to 4. The other 3G audio groups are still transported through the module.
4.1.1 Large mode
This functionality should be enabled if the user needs access to the audio in groups 5 to 8 in layer A video OR audio in the second link of Layer B video.
In ’Large mode’ the module can still only embed 4 audio groups: Either the conventional 4 groups or the four additional groups in 3G video.
AV-3G-XMUX User Manual Rev. B
Introduction 9
All 8 audio groups are de-embedded from 3G video both in layer A and layer B. The audio signals are available in the audio matrix which is considerably expanded in this mode.
The four audio groups that are not embedded by the module will be transported without any delay. This means that the use of the module with different video formats will be predictable. If the module is to be used to embed the extra 3G audio signals then it will transport the normal 4 audio groups transparently. If SD or HD video is then fed to the same embedder, the embedders will be disabled. De-embedding from the normal groups will be performed as before.
4.2 Signal flow
Video may be presented on the optical or electrical inputs. The module will switch to the other input if the module can not lock to a signal. The video is re-clocked and transformed to paral­lel video. The parallel video goes into a line buffer which is used to de-glitch the video when switched on the correct line. No errors are flagged or produced when the video is switched on the appropriate switching line. All ancillary data, including embedded audio is extracted from the video signal. All the packed data is sent to the group router. The de-embedded audio is sent to the stereo audio cross-point router. The AES audio inputs are initially connected directly to the audio router. Sample rate converters are inserted if there are sample slips or the signal is not a data signal. The use of the sample rate converters may be disabled. See chapter 3. Four of the router sources are from the mono shuffler. Each input may be any of the de-embedded signals or the AES input signals. The audio signal is delayed by a few samples during de-embedding, re-packeting the audio and audio processing. Signals that pass through the stereo audio router will be delayed by a small number of samples. The group router outputs from the de-embedders do not introduce any additional delay as the audio does not require unpacking and re-packing. The embedder core embeds either re-packeted audio from the stereo router or the existing de-em­bedded audio as configured in the group router. The embedded audio packets are inserted into the video signal together with the control packets and any other packets that were present in the original video signal. The video is serialized and output through the cable and laser drivers. The AES audio output signals are taken from outputs of the audio router.

4.3 Asynchronous data transport

Data signals are transported using the user (U) bits in AES audio streams. The de-embedding and embedding is performed in the AES audio router core. Any input in the router core may be chosen for data de-embedding and any router output may be used to embed data. See section 3.5.
4.3.1 De-embedding
The module receives many AES signals and data may be present on any of them. The user must configure which AES signal the data is expected to be on. The status page in GYDA will show the presence and the type of data detected on the configured channel. De-embedded data is output on the RS485 backplane output.
AV-3G-XMUX User Manual Rev. B
Introduction 10

4.3.2 Embedding

Two things must be configured for embedding data.
1. The data format to be received on the backplane connector.
2. The audio signal(s) to embed data into. The channel status (C) bits of the channels are also overwritten.

4.4 Audio output muting

The AES ports used as outputs may be completely switched off when the upstream source is ab­sent. This may be used to trigger an alarm or changeover. The ’automute’ setting must be activated for this to work and the upstream embedder must be one of the Nevion XMUX embedders. The activity bits in the audio control packets are used to convey this information along with the video.
4.5 Top view
AV-3G-XMUX User Manual Rev. B
Specifications 11
5 Specifications

5.1 SD HD and 3G SDI

One electrical input and one electrical output. One optical input and one optical output available as options. Optical range depends on the output power of the transmitter and the sensitivity of the receiver of the next module.
Table 5.1 Video Standards
Video standards ITU-R BT.665 SMPTE S292 and S425 level A and B
Embedded audio SMPTE S272, S299(1+2:2010)
Standards not supported 1250 line SMPTE 295M

5.1.1 Error detection

• Input video lock (Active overrides all other error flags)
• Incorrect format framing (TRS)
• EDH according to SMPTE RP165
• Line CRC and TRS errors
• Ancillary packet checksum errors
• Number of audio samples per line and frame
All SDI parameters conform to the relevant standard, ITU-R BT.656, SMPTE S292, S425.
5.1.2 Optical input-PIN
Optical wavelength 1200-1620nm ±40 nm
Maximum Optical power SD/HD: -3 dBm, 3G: -5 dBm
Sensitivity SD/ HD /3G -25/ -20/ -17 dBm
Return loss Better than 27 dB.
Maximum reflected power 4%
Transmission circuit fiber Single mode
Connector SC/UPC
AV-3G-XMUX User Manual Rev. B
Specifications 12

5.1.3 Optical laser 13T

Transmission circuit fiber 9/125um Single Mode
Connector SC/UPC
Optical wavelength 1310nm ±40nm
Light source FP semiconductor laser
Optical power -5 dBm
Extinction ratio >5:1

5.1.4 Optical lasers 13T, 15T, CxxxxT

Transmission circuit fiber 9/125um Single Mode
Connector SC/UPC
Optical wavelengths 1270, 1290, 1310, 1330, 1350, 1370, 1390, 1410, 1470,
1490, 1510, 1530, 1550, 1570, 1590, 1610nm ±6nm
Light source DFB semiconductor laser
Optical power 0 dBm
Extinction ratio >8:1

5.1.5 Optical lasers Dxxxx

Transmission circuit fiber 9/125um Single Mode
Connector SC/UPC
Optical wavelengths ITU G694.1 100GHz raster
Light source DFB semiconductor laser
Optical power 0 or +3 dBm
Extinction ratio >10:1
5.2 AES3 audio
8 ports individually assignable as inputs or outputs. Number of ports and physical connections are dependant on the backplane option selected. Thestandard connector backplane is the AV-3G-XMUX-C1
AV-3G-XMUX User Manual Rev. B
Inputs and outputs according to AES3-2003
Minimum sampling frequency 30 kHz
Maximum sampling frequency 100 kHz
Embedded audio word length 24 bits
Embedded audio Channel status As received when isochronous, otherwise fixed
Sample rate converter dynamic range 139 dB(A) @ 1 kHz
Mono shuffler maximum delay 1.37 s

5.2.1 C1 backplane

Specifications 13
Impedance 110 ohm transformer balanced
Connector 25 pin D-sub
Number of ports 8

5.2.2 C2 and C3 backplanes

Impedance 75 ohm unbalanced
Connector BNC
Number of ports C2 8
Number of ports C3 4
5.2.3 AAV-3G-XMUX-C2 backplane (with one of the AES8 audio converters)
Impedance 110 ohm transformer balanced
Connector 15 pin D-sub
Number of ports 8
5.3 Asynchronous Data
Embedded into the User bits in one of the embedded audio channels.
AV-3G-XMUX User Manual Rev. B
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