10.5
Recorder and system trigger
The trigger modes and features described so far are channel
-
based. Each
analog channel within a GEN series system has a digital trigger detector. The
trigger signals of all channels of a single recorder are combined through a
logical OR to generate a combined trigger. This trigger can be combined with
an external trigger and qualifiers. The final result is a recorder trigger. The
triggers that are generated by individual recorders can be distributed to other
recorders and mainframes.
The following simplified diagram is from the Perception software and shows the
building blocks that make the complete recorder trigger logic. Please note that
not all features may be available depending on the exact hardware used.
Ext Trigger Out
Ext Trigger In
Channel 1
Calculated Ch 1
Calculated Ch "N"
System Trigger 1
System Trigger 2
System Trigger 3
Master/Slave
Channel "N"
Qualifier 1
Qualifier "N"
Figure 10.17:
Recorder trigger logic
The heart of the recorder trigger logic is the “Combine” block. All trigger sources
come together here. The trigger sources can generate a recorder trigger,
depending on their settings, However, this can be blocked by qualifiers. If one
of the qualifiers is not armed, no recorder trigger can be generated.
● Channel 1 through N:
These are the channel triggers as described above.
Please refer to chapter “Introduction of Digital Trigger Modes” on
page 143.
● External Trigger In:
This is an external trigger signal that is mainframe
-
related: The input connector is placed on the mainframe controller. Used
to select rising or falling edge, all input cards in the mainframe use the same
edge. Each input card can select to use the external trigger as a trigger
source.
● Qualifier 1 through N:
These are the qualifiers as described above:
Please refer to chapter "Trigger qualifier" on page 153.
GEN3i
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I3763-3.1 en HBM: public
