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"Integer: y is integer value of the parameter
"Enum: y is the enum value index inside the enum
"String: y is in a 'zzzz' string format, where z is a character. Special character
used as wild card. AA* and AABB will be considered as equal
<assignment> ::= GPOx = y
Where x is in the range of [0, 7], y could be 0 or 1
<comparison op> ::= == | > | < | >= | <= | !=
<logic op> ::= && | ||
Comparisons can be ANDed together using &&, and then can be ORed together using ||.
The AND operation always has precedence over the OR operation when AND and OR both
exist in a condition.
Parameter Control Script
Example
Some broadcasters have compliance issues that need to be addressed by specialized signal
processing.
A common problem is the replacement of a mono audio channel dedicated to audio
content for the visually-impaired, if the channel is absent. Service for the visually-impaired is
required in Canada, and available soon in the United States and elsewhere. In Europe, this
service is known as the Audio Description. In North America, it is known as Descriptive
Video, DVS Descriptive Video Service, or Video Description.
When this mono audio channel is present at the input, the requirement is to pass it through
to the output and into the Secondary Audio Program (SAP) channel. However, if the signal
is absent, the X100 can detect the problem and perform one of the following through
scripts:
Sum and route the signal to the output channel feeding the SAP, if stereo audio is
present (one PCM)
Downmix to 2.0, then sum and route to the output channel feeding the SAP, if
surround sound is present (three PCMs)
Decode the audio, downmix to stereo, sum to mono, and then route to the output
channel that feeds the SAP, if Dolby Digital or Dolby E is present (one non-PCM)
Note:
In the above example, as audio channels change, the audio mutes or V-fades must
also change, to prevent clinks or pops from occurring downstream.
To enable a parameter control script, set the Activate Script parameter to Enable. Enter
your script into the Script (Part I) parameter (maximum 251 characters). If additional script
space is needed, use the Script (Part II to IV) parameters.
Selenio X100
Installation and Operation Manual
*
can be
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