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Dolby support on PHABRIX products

Order Code: Check availability on Sx and Rx ranges

Available: Now



Dolby Support within PHABRIX Products PHABRIX Sx hand held and Rx rack mount systems support the generation and analysis of Dolby E, Dolby Digital and Dolby Digital Plus audio formats transported as data bursts within the SMPTE 337M-2000 AES audio area of the SDI data stream as well as via discrete AES audio inputs and outputs.

These Dolby formats can support mono, stereo, 5.1 and 7.1 surround sound audio programmes in numerous combinations:Dolby® 5.1 uses five channels for normal-range speakers (20 Hz – 20,000 Hz) (right front, centre, left front, surround right and surround left) and one channel (20 Hz – 120 Hz allotted audio) for the subwoofer driven low-frequency effects.
Dolby® 7.1 (non broadcast) uses six channels in the primary program (Independent Substream) for a standard 5.1 surround sound mix and then the remaining 2 channels in an ancillary programme (Dependent Substream) to provide the additional down-mix version.
Dolby® E
Dolby® E is a video frame-based audio encoding and decoding technology developed by Dolby Laboratories that allows up to 8 channels of audio (mono, stereo, 5.1 or 7.1) for a primary programme (Programme 1) and optional ancillary programs. These 8 channels are compressed into a digital stream that can be transferred between compatible devices and stored on a standard stereo pair of audio tracks.
Dolby® E is primarily a production format that allows the relatively transparent movement of a finished Dolby Surround Sound audio programme, via SD-SDI, HD-SDI or 3G-SDI, through the production chain until it reaches the point of transmission where it is converted to Dolby® Digital or Dolby® Digital Plus. As Dolby® E is frame-based it allows simple editing such as cuts that do not affect the audio.
Dolby® Digital
Dolby® Digital (AC-3) is a ‘perceptual audio’ system for digital audio that allows the reduction of data needed to deliver high-quality sound. This system relies on the fact that the human ear will screen out certain levels of sound that are perceived to be noise. The removal of this noise reduces the amount of data needed to deliver the sound to the listener. This system was developed primarily for DTV, DVD and HDTV.
Dolby® Digital technology was developed by Dolby LaboratoriesTM to allow up to six channels of sound (mono, stereo or 5.1) in the form of a single ‘program’ that can be delivered at different bit rates. These 6 channels are compressed (lossy) into a digital stream that can be broadcast.
Dolby® Digital Plus
Dolby® Digital Plus (E-AC-3) is a more advanced version of Dolby® Digital that provides a more efficient encoding algorithm that provides enough bandwidth to support sophisticated multi-programme content combining mono, stereo, 5.1, 7.1 & 13.1 for a primary programme (Programme 1) and optional ancillary programs that can be delivered at much lower bit rates than Dolby® Digital. These programme channels are compressed (lossy) into multiple independent digital data stream plus up to 8 dependent sub stream that can be transferred between compatible devices and stored on a standard stereo pair of audio tracks.
Dolby® on PHABRIX products
The Dolby Generator and Dolby Analysis options available on the PHABRIX Sx and Rx range allow the closed loop testing of a wide range of parameters with the Dolby metadata data.
When moving SDI video containing Dolby® audio around a facility the highest risks of failure are likely to be the caused by timing issues that critically affect the detection of the Dolby® header as well as interruptions or corruptions of the data stream.
Dolby® E Framing Values
A Dolby® E encoded audio programme is a video frame-based system whose data occupies the area of ancillary data normally occupied by the AES/EBU PCM audio. Unlike PCM audio that can tolerate video switching anywhere within a large range of lines in the vertical interval, Dolby® E has a narrow guard band which contains no audio and in which video switching can take place without loss of critical Dolby® header information.
The Dolby® Reference Point (immediately following the Dolby® guard band) is where the encoded Dolby® E audio packet starts. This can be defined as specific video lines and timed approximately 700µs ±80µS from the SMPTE RP156 Reference Point.
It is important for the Dolby® E packet to be positioned well away from the video switching line so that Dolby® E packets are not corrupted by downstream switchers. Test equipment such as the Sx hand held range with Dolby® option can measure the timing of the Dolby® E packet relative to the SDI input or the External reference as shown in Figure 1.
Corruption of Dolby® Metadata
Equipment such as play-out servers, that store complete Dolby® Digital and Dolby® Digital Plus video/audio programs, must deliver the Dolby® data burst exactly as it was created otherwise it will not be decoded correctly at the receiver.
Equipment that decodes and re-encodes the video/audio data stream must re-assemble the data stream exactly to ensure that it can be decoded by the receiver as intended.
It can be difficult to inspect or interpret a Dolby® data stream as it is passes through a broadcast chain. It can be more useful to inject a known Dolby® program with known metadata values and then check at each stage in the broadcast chain that the injected program and metadata is the same.
Equipment such as the PHABRIX® Sx hand held and PHABRIX® Rx rack mount systems allow the generation of Dolby® E, Dolby® Digital and Dolby® Digital Plus metadata and test tones embedded within an SDI data stream so that closed loop testing of any equipment can be performed.
Dolby® CRC and SMPTE Pa/Pb Sync Word Spacing
There are a number of critical measurements that can be used to ensure that the Dolby® data burst is correct:
The Dolby® data burst provides a CRC word for each data burst. This allows the integrity of the Dolby® audio data to be checked by the receiving equipment.
With Dolby® Digital and Dolby® Digital Plus, the audio data burst is a constant length each frame and is bounded by the SMPTE 377M-2000 Pa and Pb sync words. If this spacing is incorrect, or changes during a programme, it can indicate that the data burst is not generated correctly or that it is corrupt.
It may not be possible to detect random Pa/Pb spacing changes or CRC errors during a program transmission so it is may be necessary to log these errors for later analysis.
Dolby® Programme Combinations
Dolby® programs can consist of mono channels, stereo pairs, 5.1 surround sound and 7.1 surround sound and even 13.1 surround sound as Main, Dependent or Independent programme streams. There are a large number of possible programme combinations that are permitted by Dolby® E, Dolby® Digital and Dolby® Digital Plus and therefore equipment manufacturers and installers need to test all of these combinations to ensure that they are compliant. Products such as the PHABRIX® Sx hand held and Rx rack mount equipment allow the automated testing of each of the possible combinations to ensure compliance.
Audio Buzz
When Dolby® encoded audio is not processed or decoded correctly it can produce a distinctive audio buzz. If the audio programme is interrupted the decoder may repeat the same audio segment repeatedly unit the programme is restored.
Audio Content Quality
In most cases it has to be assumed that the actual Dolby® Surround Sound programme data is correct as it is difficult to interpret without decoding it first to its base band channels. The Dolby Decode Module available for the PHABRIX Rx rack mount range allows the Dolby programme data itself to be decoded to base band audio channels for monitoring and analysis (for example audio level meters, audio phase meters, lissajous display, loudness monitoring / logging as well as being able to actually hear the audio itself).


Dolby support on PHABRIX products Specifications





For Product support please contact your distributor at the place of your purchase. Should the product be beyond their repair assistance the distributor will contact the PHABRIX Support Team on your behalf.

A summary of PHABRIX’s warranty is given below. The detail of PHABRIX’s warranty is included on the web-site under Terms and Conditions.

Please note that the battery, third-party SFP modules and SFP cages are not covered under warranty.

Summary of manufacturer’s warranty and warranty service
PHABRIX products will be supplied to the distributor with a manufacturer’s warranty in favour of the end-user of the product. Under the terms of PHABRIX’s warranty an end-user will be able to claim for any defect in material and workmanship for a period of 1 year from the date of new product shipment to the end-user. Under the terms of the warranty, PHABRIX will supply replacement parts for those which prove defective and warranty labour if the defective equipment is returned freight prepaid either to PHABRIX or to an approved factory service depot.
This warranty does not include responsibility for any transportation damage or handling damage or insurance costs.

Warranty service
1. Automatic product warranty will cover the first year from the date of invoice to the distributor’s end-user and end same date in the next calendar year.
2. Should the product develop a fault, the distributor will provide first line telephone support for the end-user to confirm the fault is technical and not operator error.
3. If the distributor considers the product to be faulty following their telephone support, the product must be returned to the distributor for visual examination to confirm the fault.
4. The distributor must then contact PHABRIX to discuss whether the product should be replaced from the distributor's stock or directly from PHABRIX.
5. If the product is faulty and cannot be repaired by the distributor, the distributor must obtain a Return Material Authorisation (RMA) number from PHABRIX before sending the faulty product to PHABRIX.

The warranty shall not apply if:
1. PHABRIX finds that the product or its component parts have been altered by unauthorised personnel;
2. the end-user installs, in the product, parts not made or supplied by PHABRIX, except such components specified by PHABRIX;
3. the product was used or installed in a manner other than in accordance with PHABRIX’s instructions;
4. the product is opened by the end-user.

Warranty Return Policy
If the product fails due to manufacturing defects, PHABRIX will either:
(a) repair the product; or
(b) replace the product.

Equipment Return Procedure
Before returning equipment to PHABRIX, the distributor or end-user must first obtain a RMA number from PHABRIX. All costs associated with shipping the product to PHABRIX shall be borne by the distributor or end-user, this includes freight, insurance as well as any and all brokerage fees and customs charges. The shipping costs associated with the return of the product to the distributor or end-user will be borne by PHABRIX.

Out of Warranty Repairs
PHABRIX will perform out of warranty repairs in accordance with its current service pricing schedule. All costs associated with shipping the product to PHABRIX shall be borne by the distributor or end-user, this includes freight, insurance as well as any and all brokerage fees and customs charges. The shipping costs associated with the return of the product to the distributor or end-user will be borne by PHABRIX.

Thank you very much for your recent purchase of PHABRIX Product, it is very much appreciated by everyone at PHABRIX.

Product Sheet


PHABRIX Rx simulation

The Rx simulator shows a simulation of the Rx2000 product. If you have a monitor of 1920 x 1080 resolution or greater, then you will be able to select the external LCD and arrange the window layout which would be visible on an external HDMI monitor on the Rx range.

Rx Simulator 09.04.14365 (18th January 2017): Please contact PHABRIX sales or your local sales partner if based outside of the UK for more information on the PHABRIX Rx range and to book a demonstration.



Rx Software & Manuals Releases

Please read carefully the PHABRIX Software End User Licence Agreement before downloading any software from this site.

Rx system software

To install this software on the Rx2000, Rx1000 or Rx500, download the zip file, extract the contents to the root directory of a USB pen drive then insert this into the front panel USB socket. See manual for further details on installing software.

Version Date Software Release notes Rx 500/1000 Manual Rx 2000 Manual
Current Version: Note that if your Rx system is running a version of software earlier than 9.01.12714 then new software will have to be installed manually to enable future automatic software updates.
09.05.14681 29/06/2017 Software Zip
Changes Rx1000 Manual Rx2000 Manual
Note that Version 9 software does NOT support Version 8 and earlier Eye Modules (please contact your dealer for a free hardware upgrade.) Note also that Version 8 systems will not automatically download Version 9 software. This will have to be done manually.
09.04.14365 05/09/2016 Software Zip
Changes Rx1000 Manual Rx2000 Manual
Previous Releases


Rx and Sx Remote control SDK Documentation and Utilities

A setup application is provided to install the tools and documentation into the correct places

Tools are installed under the Start Menu and documentation and code examples are installed in MyDocuments\Phabrix\RemoteApiSDK.

Version For Software Version Date Utilities and Source Documentation
2.3 0.08.xxxx -> Date Applications, Examples & Docs Installer
Previous Releases


Simple FTP Client for the Rx range

A setup application is provided to install the FTP Client.

This application simplifies downloading of the latest version for networks where a Proxy server is used and Rx units do not have direct access to the internet. It can also be used for simpler downloading of Screen dumps or Report files from an Rx.

FTP Client Version Release Date Software
Version NumberDate Installer