BLITS Menu
This menu page is used to define the parameters for the BLITS analyzer and the BLITS and Stereo Ident generator.
RTW created a special instrument to use the BLITS sequence for a user friendly and comprehensive analysis and display of level, channel allocation, phase, delay and polarity of incoming digital audio signals in 5.1 mode.
BLITS (Black & Lane's Ident Tones für Surround) is a tool to allow testing for channel allocation, level and phase of 5.1 surround signals. Developed by Martin Black and Keith Lane from Sky TV in London in 2004, this sequence is widely used in international broadcasting.
Please note:
The generated signals can be routed to the digital outputs. Please use the Output Routing option of the System - Audio menu to set the channel allocations.
This section is used to configure the BLITS analyzer. With the analyzer mode activated, the BLITS instrument on the screen shows an incoming BLITS signal by the use of green marks on the upper Analyzer line. When the signal has completely been received, the signal quality is displayed on status bars, being green coloured, if anything is alright, but red coloured, if there is any error. In the report below the bars, the different values for each channel are listed and can be analyzed.
• Mode
This key is used to turn the BLITS analyzer function on or off. With this mode activated, the screen displays a line with fields being highlighted green for each channel of the incoming signal.
Options:
|
|
on | off
|
Default value:
|
|
on
|
• Signal Quality
This key is used to turn the BLITS analyzer status display on or off. With this mode activated, the screen displays one main bar and four other bars representing the state of the whole signal resp. the state of the channel allocation, the level, phase and delay, and polarity parameters. If the parameters and the signal is good, the bars are displayed green-coloured. If one parameter is faulty, the corresponding bar and the main bar are highlighted in red.
Options:
|
|
on | off
|
Default value:
|
|
on
|
• Report
This key is used to turn the BLITS analyzer report function on or off. With this mode activated, the screen displays a table showing the analyzed values of the parameters for all channels. Faulty values are highlighted in red, all others displayed in green.
Options:
|
|
on | off
|
Default value:
|
|
on
|
• Level Limit
This key is used for the adjustment of the level threshold used as a limit for the BLITS analyzer level measurement.
Options:
|
|
±0 dB to ±2 dB in steps of ±0.1 dB
|
Default value:
|
|
±0.5 dB
|
• Delay Limit
This key is used for the adjustment of the delay threshold used as a limit for the BLITS analyzer phase/delay measurement. Reference for the delay is the first incoming channel.
Options:
|
|
0 ms to ±10 ms in steps of 0.001 ms (1 µs)
|
Default value:
|
|
0.00 ms
|
back to top
This section is used to configure the BLITS generator. With the generator mode activated, the BLITS instrument on the screen shows an outgoing BLITS signal by the use of green marks on the upper Generator line.
Please note:
The generated signals can be routed to the digital outputs. Please use the Output Routing option of the System - Audio menu to set the channel allocations.
• Mode
This key is used to turn the BLITS generator function on or off. With this mode activated, the screen displays a line with fields being highlighted green for each channel of the outgoing BLITS sequence.
Options:
|
|
on | off
|
Default value:
|
|
off
|
• Intro
This key is used to turn the leading intro wave file/station header on or off. This file has to be loaded into the TouchMonitor from a connected USB memory stick using the Load Intro key of the Control Bar. With the "Intro File" key (see next option), it will be allocated.
Options:
|
|
on | off
|
Default value:
|
|
off
|
Please note:
The leading intro should be prepared as an 8 bit wave file with 2 s max. length in your favored sample rate and stored to an USB memory stick.
• Intro File
This key is used to allocate a leading intro wave file/station header to the BLITS generator sequence. At first, this key is presented as a grey field. After loading one file from a connected USB memory stick using the Load Intro key of the Control Bar, its name appears in the field. With the "Intro" key (see previous option) set to "on", it is allocated. If two or more wave files are loaded into the TouchMonitor, the field changes to an active key and allows the selection of a file.
Please note:
The leading intro should be prepared as an 8 bit wave file with 2 s max. length in your favored sample rate and stored to an USB memory stick.
• Level Offset
This key is used for the adjustment of a level offset from the nominal BLITS generator level -18 dBFS.
Options:
|
|
-12 dB to +12 dB in steps of 1 dB
|
Default value:
|
|
0 dB
|
back to top
Stereo Ident Generator section
This section is used to configure the stereo ident generator. With the generator mode activated, the BLITS instrument on the screen shows an outgoing stereo ident signal by the use of green marks on the upper Generator line.
Please note:
The generated signals can be routed to the digital outputs. Please use the Output Routing option of the System - Audio menu to set the channel allocations.
• Mode
This key is used to turn the stereo ident generator function on or off. With this mode activated, the screen displays a line with fields being highlighted green for each channel of the outgoing Stereo Ident sequence.
Options:
|
|
GLITS | 3304 | off
|
Default value:
|
|
off
|
• Intro
This key is used to turn the leading intro wave file/station header on or off. This file has to be loaded into the TouchMonitor from a connected USB memory stick using the Load Intro key of the Control Bar. With the "Intro File" key (see next option), it will be allocated.
Options:
|
|
on | off
|
Default value:
|
|
off
|
Please note:
The leading intro should be prepared as an 8 bit wave file with 2 s max. length in your favored sample rate and stored to an USB memory stick.
• Intro File
This key is used to allocate a leading intro wave file/station header to the stereo ident generator sequence. At first, this key is presented as a grey field. After loading one file from a connected USB memory stick using the Load Intro key of the Control Bar, its name appears in the field. With the "Intro" key (see previous option) set to "on", it is allocated. If two or more wave files are loaded into the TouchMonitor, the field changes to an active key and allows the selection of a file.
Please note:
The leading intro should be prepared as an 8 bit wave file with 2 s max. length in your favored sample rate and stored to an USB memory stick.
• Level Offset
This key is used for the adjustment of a level offset from the nominal stereo ident generator level -18 dBFS.
Options:
|
|
-12 dB to +12 dB in steps of 1 dB
|
Default value:
|
|
0 dB
|
back to top
• Load Intro
This key is used to display the intro files according to the requirements and available on an USB memory stick. Touch the files to be loaded into the TouchMonitor. For allocation use the "Intro File" option, for activation the "Intro" option.
Please note:
Leading intro files should be prepared as an 8 bit wave file with 2 s max. length in your favored sample rate and stored to an USB memory stick.
• Delete Intro
This key is used to remove the wave files from the TouchMonitor. Touch the keys of the files you want to delete and confirm the security query with "Yes".
Please note:
After deleting an intro file, the following one in the order will be preset to "Intro File" key.
back to top
