Transcript
Lawo AG, Germany Phone: +49 7222 1002-0 Web: www.lawo.de
Data Sheet
Rev. 2006-02-07
DALLIS HD/SD SDI Audio Embedder/De-Embedder, SDI 1 input , 1 thru, 2 outputs, connector BNC 946/09
SD SDI (SMPTE 259M/272M)
946/13
HD/SD SDI (Multi-rate: SMPTE 292M/299M and SMPTE 259M/272M)
•
Audio de-embedder and embedder for up to 4 AES3 channels in / out (stereo)
•
Sample rate converters allow asynchronous Video / Audio operation
•
Real 24 bit performance, even with sample rate converters
•
Supports transmission of non-audio signals like Dolby E streams
•
4 stereo delays, up to 240ms each channel
•
Video test pattern generator
•
SDI split out allows signal distribution
Copyright/Disclaimer All rights reserved. Permission to reprint or electronically reproduce any document or graphic in whole or in part for any reason is expressly prohibited, unless prior written consent is obtained from the Lawo AG. All trademarks and registered trademarks belong to their respective owners. It cannot be guaranteed that all product names, products, trademarks, requisitions, regulations, guidelines, specifications and norms are free from trade mark rights of third parties. All entries in this document have been thoroughly checked, however no guarantee for correctness can be given. Lawo AG cannot be held responsible for any misleading or incorrect information provided throughout this manual. Lawo AG reserves the right to change specifications at any time without notice © Lawo AG, February 2006
DALLIS HD/SD SDI 946/09, 946/13 Related Products
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DALLIS HD/SD SDI 946/09, 946/13 Power Supply TA = 25°C. System sample frequency fs=48kHz or fs=96kHz unless otherwise noted. ! 1#? *!! 5 < @ 1# *!! 5 * @
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3/16
Rev. 2006-02-07
DALLIS HD/SD SDI 946/09, 946/13 Input Auxiliary Data TA = 25°C. Master cards 947/03, 947/05, 947/07. -" ##
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4/16
Rev. 2006-02-07
DALLIS HD/SD SDI 946/09, 946/13 Output Auxiliary Data TA = 25°C. Master cards 947/01, 947/03, 947/05, 947/07. -" ##
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Video Test Pattern Generator
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Rev. 2006-02-07
DALLIS HD/SD SDI 946/09, 946/13 Indicators -& 67
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Wordlength
Channel 5..8 Group
Reserved
Channel 1..4 Group
SRC Wordlength
DeEmbedder
ON
S1
OFF
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De-Embedder Group
24 Bit
Group 1
20 Bit
Group 2
16 Bit
Group 3
16 Bit
Group 4
Embedder Group
ON OFF
Group
Group
Group 2
PAL/NTSC
Embedder Channel Channel 1..4 5..8 on
Clean
Group 1
on
C.A7 2 A @& -
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Group 3
S2
Group 4
no Group
6/16
Rev. 2006-02-07
DALLIS HD/SD SDI 946/09, 946/13 Further particulars/explanatory notes SDI streams usually contain audio data. Audio will be partially replaced or remain unaltered setting the switch to ‘ON’.
Possible system sample rates Some text passages refer to sample rates as basic condition with respect to certain parameters. Please note that in this regard fs= 48kHz also comprises fs= 44.1kHz and fs= 96kHz also comprises fs= 88.2kHz.
If you wish to delete incoming audio completely, set the switch to ‘CLEAN’. In this case the embedder is forced to generate a new audio structure according your embedder settings. Note that already existing audio data will be lost.
The manufacturer's tests at fs= 48kHz or fs= 96kHz are designed to represent all sample rates.
If no embedding is necessary the switch can be set to ‘OFF’. In this case all audio in the SDI stream will remain unaltered and there is also no deembedder/embedder processing anymore. Thus corruption of the received audio is not possible (e.g. due to a faulty user routing operation).
Possible audio sample rates within the SDI signal In SD mode the audio within the SDI signal is synchronous to the video carrier. In HD mode this is the normal operation too. But in HD mode it is also possible to embed audio asynchronously to the video carrier. This card will handle sample rates from 32 kHz to 48 kHz in asynchronous operation.
In mode 8/0 where the embedder is not in use, only the ‘OFF’ position is possible.
The SDI module offers a 16 channel de-embedder and a 16 channel embedder. Both can be used simultaneously. Up to 8 channels of each can be routed to the DALLIS master card.
If no control system is used the ‘CLEAN’ mode is selectable by a DIP switch (‘ON’ position, refer to table above). In the ‘OFF’ position of this switch the embedder is in its normal operation. (It is not possible to disable the embedder by a DIP switch.) This setting is also used for start-up configuration until a control system is ready.
The video signals are always transmitted from the input to the output/thru without any change.
Group/Channel select
De-Embedder/Embedder
SDI streams can contain up to 16 audio channels (mono), subdivided into 4 groups of 4 channels each. This SDI module is able to select up to 4 channel-pairs (stereo) from the de-embedder and up to 4 channelpairs (stereo) to the embedder for further usage. Thereby the group and channel-pair position within the group is selectable for every DALLIS channel-pair. The not selected channels/groups of the embedder remain unaltered in content. A new audio structure is built for all SDI groups by the embedder even for the unaltered channels/groups except in mode 8/0 where the embedder is disabled and no new audio structure will be generated at the output.
Modes of operation The card can operate in 4 different modes. The modes can be configured in the AdminHD software, when used with a Nova73 matrix. Without configuration the card will default to 8/8 mode with the settings made by the DIP switches S1 and S2. Mode 8/8 (default): 8 channels of de-embedded audio into DALLIS and 8 channels of embedded audio from DALLIS. Settings of DIP S1 and S2 will be overwritten by the Nova73 control system. Mode 8/0: 8 channels of de-embedded audio into DALLIS.
If no control system is used it is possible to select the channels for the de-embedder and the embedder by some DIP switches (refer to table above). In this case the selection is reduced to whole groups instead of channel-pairs. This selection is also used for start-up configuration until a control system is ready.
Mode 0/8: 8 channels of embedded audio from DALLIS. Mode 4/4: 4 channels of de-embedded audio into DALLIS and 4 channels of embedded audio from DALLIS. For all modes refer to the figures below.
Sample rate converters The SDI module supports a sample rate of 48kHz in SD-Mode or 32..48kHz in HD mode (946/05 only) which is extracted from the SDI stream. It is recommended to use the sample rate converters of the plug-in card to
Embedder mode The embedder can be switched into three different modes: ‘ON’, ‘CLEAN’, ‘OFF’. 7/16
Rev. 2006-02-07
DALLIS HD/SD SDI 946/09, 946/13 Output word length
keep the DALLIS system independent from the SDI equipment. Therefore the SRC should be in the ‘ON’position whenever possible.
The SDI module supports audio word lengths of 24, 20 or 16 bit for all outputs. In the cases of 16 or 20 bit, signals are triangular dithered before they are embedded into the SDI stream. Thereby an additional delay will occur if the sample rate converters are not already in use. With active sample rate converters no additional delay is added. This is due to placement of the dithering device inside the sample rate converter (refer to figures below). Therefore if the word length is reduced the output sample rate converter will be enabled automatically. Beside the additional delay no further audio degeneration is taking place due to the very high quality of the sample rate converters.
In some cases it is required to bypass the SRCs, e.g. for reasons of transparent data transmission as well as for the least possible delay. Remember that in this case the DALLIS/Nova73 systems have to be synchronized to the audio within the SDI signal. (In SD/HD synchronous this would be the video carrier, in HD asynchronous this would be the sample rate used at the audio embedder.) To deactivate the SRCs they can be switched off (‘OFF’-Position). This mode will bypass the SRCs. If the system sample rate is asynchronous to the sample rate of the audio within the SDI signal audio errors will occur. Thus, this mode must not be used if it cannot be ensured that the audio within the SDI signal and the DALLIS are synchronous!
Without a control system the output word length is selectable by a set of DIP switches for all outputs in common (refer to table above). This setting is also used for start-up configuration until a control system is ready.
If no control system is used, this function is available by a DIP switch (refer to table above). This setting is also used for start-up configuration until a control system is ready.
Delay The device contains 4 stereo delays which can be used for either all input or all output channels. It is not possible to use some of them for the inputs and others for the outputs. The delays are configurable via a control system only. Without such a system the delays are not useable. (Refer to figures below.)
Output sample rate (embedder) The sample rate of the embedder (for all four groups) is taken from the de-embedder. In HD mode (946/05 only) the lowest group that contains audio is used. E.g. if the st 1 group contains audio this sample rate is used for all nd embedder groups. If only the 2 group contains audio, its sample rate is used for all embedder groups and so on. If no de-embedder group contains audio the video carrier is used to generate the sample rate of the embedder.
Video test pattern generator The SDI output is equipped with a video signal test pattern generator. So the device can act as master for the SDI signal and therefore no input video signal is necessary. The generator video display can be chosen between a black screen (default) and colour bars. Several video formats are available:
In SD mode the sample rate of the embedder is always derived from the video carrier. It is not possible to use incoming SDI signals containing audio with different sample rates! In such a case the lowest audio group found is used for the sample rate at the embedder (see above), higher groups with a different sample rate can not be processed correctly and audio errors will occur for these signals. This applies also to groups which are routed directly from the de-embedder to the embedder and not to the DALLIS master card.
Mode auto (default): If the input is locked to an incoming video signal the output will also transmit this format. After a failure of the input signal the video test pattern generator will track the last received format and continue the transmission. If no input signal is present after power up the generator will choose a default video format which can be configured by a remote control system (refer to the video generator chapter table). Without any configuration the format can be affected by the DIP switch 'PAL/NTSC'. The device 946/09 will choose SD 625 for PAL and SD 525 for NTSC. The device 946/13 will choose HD 1080i50 for PAL and HD 1080i59.94 for NTSC.
In all these cases the sample rate converters should be enabled as long as the embedded audio within the SDI signal is not synchronous to the DALLIS frame rate. If no video signal is present at the de-embedder the DALLIS frame sync is used for the embedder sample rate. In this case the sample rate converters are not necessary.
This mode is correct if the device is within a SDI chain. If the input signal fails the generator auto mode prevents the chain from a complete loss of function. In 8/16
Rev. 2006-02-07
DALLIS HD/SD SDI 946/09, 946/13 st
such a case the embedded signals are still working and also all following stages in the chain.
processed and the 1 8 channels will be routed through. With this method all audio channels of a SDI signal can be embedded/de-embedded.
Fixed modes: With a remote control system the generator can be switched to a fixed video format. For details refer to the video generator chapter table. This chosen format will always be transmitted at the outputs independent of the input signal!
Each de-embedder/embedder stage adds a little delay to the signal. If all 16 channels shall be de-embedded nd the 2 8 channels must pass through the deembedder/embedder of the device A. After that they will be de-embedded with device B. Therefore a little nd additional delay occurs for the 2 8 channels in the deembedder/embedder stage of device A. Similar to that, st if all 16 channels should be embedded the 1 8 channels will be embedded with device A and will pass the de-embedder/embedder stage of device B where nd the 2 8 channels will be embedded. Here a little st additional delay occurs for the 1 8 channels in the deembedder/embedder stage of device B.
This mode is correct if the device is at the beginning of a SDI chain and the SDI signal is used for audio only. Without a control system the video format can only be affected by the DIP switch 'PAL/NTSC' as it is described in the 'Mode auto' section. This setting is also used for start-up configuration until a control system is ready.
This additional delay is very short and all 16 channels will still be synchronous to video frames. It is not necessary to compensate these described delays!
Differences between output 1 & 2 The output 1 and 2 are in parallel while normal operation but electrically separated. Without power only the output 1 is connected to the input by a relay. In this case the output 2 is inoperable.
Type of coaxial cable
Therefore in a complex SDI chain the output 1 should be used. Output 2 is useful to split the SDI signal.
To meet the EMI/EMC-Specifications and input equalisation it is very important to use an adequate coax cable type.
Cascading two SDI devices
The connectors shall characteristics conforming connector and the coax impedance of 75. The coax frequency shielding.
Although the SDI module offers a 16 channel deembedder/embedder, only up to 8 channels can be routed to the DALLIS master card per device. The remaining 8 channels can be processed by the usage of a second SDI device in series to the first (refer to the diagram at the end of this document).
have the to the BNC shall provide shall provide a
mechanical type. The a resistive proper high
For SD-SDI we recommend a RG 59/U (Belden 8281), for HD-SDI a RG 6/U (Belden 1694A).
st
In such a configuration the 1 set of 8 channels will be nd processed by the device A, the 2 set of 8 channels will be routed through device A. Together with the new st nd embedded 1 8 channels the 2 8 channels will be nd transferred to device B. There the 2 8 channels will be
9/16
Rev. 2006-02-07
DALLIS HD/SD SDI 946/09, 946/13 Connectors / Indicators
OUT 2
OUT 2
OUT 1
OUT 1
946/09
946/13
10/16
Rev. 2006-02-07
DALLIS HD/SD SDI 946/09, 946/13 Block diagrams Mode 8/8 This diagram represents the mode 8/8 in its default state. In normal operation the relay is in the position shown. It will bridge the SDI signal if no power is available in the DALLIS system. Only the audio paths are shown! The ‘THRU/NEW’ switch positions depend on the ‘GROUP/CHANNEL select’ switches. If any ‘GROUP/CHANNEL select’ switch points to an embedder channel-pair the ‘THRU/NEW’ switch will flip to the right position. If an embedder channel-pair is not addressed by any ‘GROUP/CHANNEL select’ switch it will change to the left position automatically. THRU Relay
IN
OUT 1
Embedder OFF
OUT 2
Embedder ON / CLEAN
De-embedder Grp 1
Grp 2
Grp 3
Embedder Grp 4
Grp 1
1/2 3/4 1/2 3/4 1/2 3/4 1/2 3/4
Grp 2
Grp 3
Grp 4
1/2 3/4 1/2 3/4 1/2 3/4 1/2 3/4 THRU / NEW
Channel 1/2
depends on each other
Channel 1/2
GROUP/CHANNEL select
GROUP/CHANNEL select Channel 3/4
Channel 3/4
Channel 5/6
Channel 5/6
Channel 7/8
Channel 7/8
SRC
Dthr DLY Bypass
Bypass
DLY
Bypass DLY Bypass
Channel 1/2
SRC
Channel 3/4
SRC/DLY
Channel 5/6
SRC/DLY
Channel 7/8
SRC/DLY DELAY Direction
DALLIS Backplane
11/16
Rev. 2006-02-07
DALLIS HD/SD SDI 946/09, 946/13 Mode 4/4 This diagram represents the mode 4/4 in its default state. The gray switches cannot be changed in this mode. Only the audio paths are shown! THRU Relay
IN
OUT 1
Embedder OFF
OUT 2
Embedder ON / CLEAN
De-embedder Grp 1
Grp 2
Grp 3
Embedder Grp 4
Grp 1
1/2 3/4 1/2 3/4 1/2 3/4 1/2 3/4
Grp 2
Grp 3
Grp 4
1/2 3/4 1/2 3/4 1/2 3/4 1/2 3/4 THRU / NEW
Channel 1/2
depends on each other
Channel 1/2
GROUP/CHANNEL select
GROUP/CHANNEL select Channel 3/4
Channel 3/4
Channel 5/6
Channel 5/6
Channel 7/8
Channel 7/8
SRC
Dthr DLY Bypass
Bypass
DLY
Bypass DLY Bypass
Channel 1/2
SRC
Channel 3/4
SRC/DLY
Channel 5/6
SRC/DLY
Channel 7/8
SRC/DLY DELAY Direction
DALLIS Backplane
12/16
Rev. 2006-02-07
DALLIS HD/SD SDI 946/09, 946/13 Mode 8/0 This diagram represents the mode 8/0 in its default state. The gray switches cannot be changed in this mode. Only the audio paths are shown! THRU Relay
IN
OUT 1
Embedder OFF
OUT 2
Embedder ON / CLEAN
De-embedder Grp 1
Grp 2
Grp 3
Embedder Grp 4
Grp 1
1/2 3/4 1/2 3/4 1/2 3/4 1/2 3/4
Grp 2
Grp 3
Grp 4
1/2 3/4 1/2 3/4 1/2 3/4 1/2 3/4 THRU / NEW
Channel 1/2
depends on each other
Channel 1/2
GROUP/CHANNEL select
GROUP/CHANNEL select Channel 3/4
Channel 3/4
Channel 5/6
Channel 5/6
Channel 7/8
Channel 7/8
SRC
Dthr DLY Bypass
Bypass
DLY
Bypass DLY Bypass
Channel 1/2
SRC
Channel 3/4
SRC/DLY
Channel 5/6
SRC/DLY
Channel 7/8
SRC/DLY DELAY Direction
DALLIS Backplane
13/16
Rev. 2006-02-07
DALLIS HD/SD SDI 946/09, 946/13 Mode 0/8 This diagram represents the mode 0/8 in its default state. The gray switches cannot be changed in this mode. Only the audio paths are shown! THRU Relay
IN
OUT 1
Embedder OFF
OUT 2
Embedder ON / CLEAN
De-embedder Grp 1
Grp 2
Grp 3
Embedder Grp 4
Grp 1
1/2 3/4 1/2 3/4 1/2 3/4 1/2 3/4
Grp 2
Grp 3
Grp 4
1/2 3/4 1/2 3/4 1/2 3/4 1/2 3/4 THRU / NEW
Channel 1/2
depends on each other
Channel 1/2
GROUP/CHANNEL select
GROUP/CHANNEL select Channel 3/4
Channel 3/4
Channel 5/6
Channel 5/6
Channel 7/8
Channel 7/8
SRC
Dthr DLY Bypass
Bypass
DLY
Bypass DLY Bypass
Channel 1/2
SRC
Channel 3/4
SRC/DLY
Channel 5/6
SRC/DLY
Channel 7/8
SRC/DLY DELAY Direction
DALLIS Backplane
14/16
Rev. 2006-02-07
DALLIS HD/SD SDI 946/09, 946/13 Delay configuration All delays together can be configured to the inputs or to the outputs. ! from DALLIS-Slot
+ #
SRC
,
-
Dthr
to Embedder DLY Bypass
Bypass
DLY
Bypass DLY Bypass
SRC
from De-embedder
! from DALLIS-Slot
+
SRC
,
to DALLIS-Slot
-
Dthr
to Embedder DLY Bypass
Bypass
DLY
Bypass DLY Bypass
SRC
from De-embedder
15/16
to DALLIS-Slot
Rev. 2006-02-07
GROUP/CHANNEL select
Grp 2
Grp 3
Grp 4
DLY
Grp 4
DLY Bypass
Bypass
THRU / NEW
Channel 3/4
Channel 1/2
16/16 Channel 7/8
SRC/DLY
Channel 7/8
1st eight channels I/O
DALLIS Backplane
Channel 5/6
SRC/DLY
DELAY Direction
Bypass Channel 1/2
SRC
Channel 5/6
Channel 7/8
Channel 5/6
Channel 3/4
Channel 1/2
Grp 2
Grp 3
Grp 4
Dthr
DLY Bypass
DLY Bypass
DELAY Direction
Grp 3
SRC
Bypass
2nd eight channels I/O
DALLIS Backplane
SRC/DLY
SRC/DLY
SRC/DLY
DLY
Grp 2
Embedder Grp 4
THRU / NEW
Embedder ON / CLEAN
Embedder OFF
1/2 3/4 1/2 3/4 1/2 3/4 1/2 3/4
Grp 1
Device B
1/2 3/4 1/2 3/4 1/2 3/4 1/2 3/4
Grp 1
De-embedder
Channel 3/4
SRC
GROUP/CHANNEL select
IN
SRC/DLY
DLY Bypass
GROUP/CHANNEL select
depends on each other
OUT 2
OUT 1
THRU
SDI bridge from device A to device B
Channel 3/4
Channel 1/2
Channel 7/8
Dthr
Grp 3
Relay
Channel 7/8
Bypass
Grp 2
1/2 3/4 1/2 3/4 1/2 3/4 1/2 3/4
Grp 1
Embedder
Embedder ON / CLEAN
Embedder OFF
Channel 5/6
SRC
1/2 3/4 1/2 3/4 1/2 3/4 1/2 3/4
Grp 1
De-embedder
Device A
Channel 5/6
Channel 3/4
Channel 1/2
IN
from SDI source
Channel 7/8
Channel 5/6
Channel 3/4
Channel 1/2
Relay
GROUP/CHANNEL select
depends on each other
OUT 2
OUT 1
THRU
to SDI destination
DALLIS HD/SD SDI 946/09, 946/13
Cascading two SDI devices
Every SDI module offers a 16 channel de-embedder plus a 16 channel embedder. But only up to 8 channels of each can be routed to the DALLIS master card per device. The remaining 8 channels can be processed by the usage of a second SDI device in series to the first (see below). The figure illustrates the normal configuration of both devices.
Rev. 2006-02-07
