Synchronization; Consumer Details - Studer OnAir 3000 Operating Instructions Manual

OnAir Digital Mixing Consoles
Pulse Function
RS Flip-Flop
6.5.29.3.2

Synchronization

6.5.29.3.3

Consumer Details

6-88 Configuration
The new pulse function allows generating a pulse of defined duration and
polarity that is triggered by a selectable GP input signal or custom logic cate
output. The pulse gate can be thought of as 'one shot' gate or monostable
multivibrator. It is not re-triggerable, that is, any triggering edge arriving
while the pulse is active does not have any influence on the pulse duration.
The pulse gate can have a label, an input source and an input replacement
value (i.e. the input status while the input source is undefined) assigned. The
polarity of the pulse can be set (positive/negative), as well as the pulse dura-
tion (from 40 to 1000 ms in steps of 20 ms). The triggering edge of the input
signal can be selected from rising, falling, or both.
Labels are initialized by the software as 'Pulse nnn' by default. The number
of available pulse gates is defined in the CustomLogics.xml file.
Please note that RS flip-flops are not available in Custom Logic. Please use
'User Functions' in order to store logic states. For a configuration example
please refer to chapter
In order to provide stable and significant output signals of any user-configured
circuit, all operations of the custom logic elements within a system are pro-
cessed synchronously. The logical operations are processed in three steps:
• Latching all input levels to the custom logic 'cloud'
• Processing all logic operations
• Latching the output levels to the custom logic 'cloud'.
This cycle takes 20 ms, resulting in a latency of max. 20 ms for any circuit
up to the permitted limit of ten cascaded logical operations.
The Custom Logic synchronization mechanism requires all consumers (GPIn-
put functions and GPOutputs).
OutputLevelReady
LevelProducer Consumer
LogicTarget
Replacement Value
HoldLevel
Level
The setting of switch 1 depends on the 'Level Producer' specified by the
corresponding Source of an Input.
Source
Local or Remote GPInput
Local or Remote GPOutput function
Local or Remote Custom Logic
For cases where the 'Level Producer' is a remote system that may not always
be available for any reason, a replacement value can be defined. This is done
individually for every input in the Configuration Tool.
SW V6.0
6.5.29.3.5, example 3.
False
Source
Switch 1 Switch 2
GPInput Function
GPOutput
SWITCH 1
Level
Level
Hold Level
Document generated: 10.10.14