8.Features
© 2023 China Daheng Group, Inc. Beijing Image Vision Technology Branch 68
one in the MultiSourceSelector, then make the MultiSourceEnable selection as True or False to decide
whether this trigger source is multi source or not.
For example, when your settings are as follows: MultiSourceSelector=Line0, MultiSourceEnable=True,
MultiSourceSelector=Line2,
MultiSourceEnable=True,
MultiSourceSelector=Software,
MultiSourceEnable=False. That means you’ve set both Line0 and Line2 as trigger source and the PC will process
these two signal simultaneously, which is different from the normal trigger mode that only one trigger source can
be processed.
MultiSource function can be use in normal way as well when users just set one trigger source’s
MultiSourceEnable as True. For example, when in MultiSource mode , set MultiSourceSelector=Line0,
MultiSourceEnable=True, other MultiSourceEnable as False, that equals to set Line0 as trigger source
directly.
Besides, when external trigger source is in need, users have to complete the physical connection of the
external trigger in IO according to the MultiSourceEnable settings.
MultiSource Features
MARS–GT features about dealing with the multi-source input signal:
1)
TriggerActivation, choose RisingEdge or FallingEdge manually.
2)
TriggerFilter, whether to filter the hardware trigger signal (Filter function is not available for software
trigger). MARS-GT camera support RisingEdge and FallingEdge two modes and the default
configuration is no TriggerFilter operation. TriggerFilter will cause trigger delay.
3)
TriggerDelay, whether to postpone the multi-source signals and generate images. The default
configuration is no TriggerDelay operation.
4)
Because of the exogenous bi-directional I/O Line2, when you reverse pins’ status as Output, then the
corresponding trigger source under MultiSource cannot be enabled.
5)
There is no limit for TriggerSelector, which is means that you can choose MultiSource selection both
in FrameStart and in FrameBurstStart. Different trigger configurations can be selected for
MultiSources of different types, including trigger mode, trigger source, etc.
6)
You can get frame information in MultiSource mode, the chunk id is 4 and the length is 4 byte. Trigger
source of the current transferring image is as follow:
0
1
2
3
Software trigger
Hardware trigger Line0 Hardware trigger Line2
Reserve
Table 8-1 Frame information status
8.2.9.
TriggerCache
Trigger cache usage configuration
MARS-GT camera support TriggerCache function, which can be set only in valid acquisition and hardware
trigger mode. All signal buffer will be cleared while in AcquisitionStop mode.
