DAP Technology 1394, Operation Manual

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Audio Video / Control protocol (AV/C)
280 Copyright © DapTechnology B.V., 2005-2019 - All Rights Reserved., 5/20/2019
·
AV/C Tuner Subunit Model and Command Set version 2.0, including:
·
AV/C Tuner Broadcast System Specification - Analog Video - version 1.0
· AV/C Tuner Broadcast System Specification - Analog Audio version 1.1
·
AV/C Tuner Broadcast System Specification - Digital Video Broadcast (DVB) - version 1.0
· AV/C Tuner Broadcast System Specification - ATSC Digital Television System (DTV)
· AV/C Tuner Broadcast System Specification - Rec. ITU-R BO. 1294 System B
·
AV/C CA Subunit Specification - version 1.0
Optionally, a fourth part can be toggled on and off by clicking on the 'Toggle source-display on/off' button
in the toolbar (see below).
15.1.1. How to use it
To display the AV/C results, select the AV/C tab page in the Protocol View of the Recorder. The Protocol
View can be displayed by selecting it in the 'View' menu of the Recorder.
IMPORTANT:
You will need an AV/C-Protocol license key to be able to select this view. However, if you open a
Recorder file that was made with a Analyzer with a valid AV/C license key installed, the Protocol View can
be enabled, even if you do not have a valid AV/C license key yourself. For more information about license
keys,
click here .
The AV/C-protocol analyzer needs some information from the Configuration ROM of a AV/C device, to be
able to analyze the AV/C transactions and packets corresponding to this device. There are two ways the
analyzer can get this information: automatically or manually.
Automatically finding AV/C information
To make sure the AV/C analyzer finds the AV/C information automatically, you should make sure that the
reading of Configuration ROM for the node id of the unit is recorded. The Configuration-ROM information
is normally read after a bus reset. One way to do this is to (re)connect the AV/C device while the Recorder
is recording data. You should also take care that this recorded information is not removed from the
recorder buffer because of recorder buffer overflow (cyclic recorder buffer). One way to do this is to stop
the recorder before the cyclic buffer (the buffer part before the trigger position) fills completely, or by
generating a trigger before this part is filled completely (see the Recorder for more information).
Manually inputting AV/C information
If no Configuration-ROM reads are recorded, you will need to input this information manually. Also, if only
part of this information can be found automatically, you will need to add information manually. You can do
this in the 'Protocol Settings' dialog. It can be opened by clicking the 'Protocol Settings' button on the
toolbar (see below). This dialog shows information used by the all-protocol analyzers. It initially shows all
information that it found automatically and you can change or add information manually. See the
description of the 'AV/C-Protocol Settings' below for more information.
Selecting a transaction or selecting a stream packet, will display the details of the transaction or stream
packet in the details pane (the 'Transaction/Isochronous-packet data' pane). When selecting the 'Iso
stream xx start' or 'Iso stream xx stop' event in the 'relations' pane (left) the first, respectively last
isochronous packet of a continuous isochronous stream will be selected. The corresponding details of the
selected isochronous packet will be displayed in the 'Transaction/Isochronous-packet data' pane.
When an isochronous packet is selected, you will be able to see the corresponding source packet as
defined by IEC61883 in an optional 'Isochronous source packet' pane. This part can be toggled on and off
with a button in the toolbar (see below). When this part is switched on, it is displayed next to the tree
view.
In the example below this display is switched on: