7 PICOSCALE CONTROL GUI
7.3 Advanced Trigger
Figure 7.7: Block Diagram of the
PICO
SCALE
Trigger System.
The
Advanced Trigger System
can be purchased as an additional feature for the
PICO
SCALE
system
which allows to synchronize internal and external processes. Figure 7.7 shows the block diagram
of the
Advanced Trigger System
. The system offers eight trigger sources (left side) which can be log-
ically combined to up to eight actual trigger output signals (right side). These signals may be used
by other internal sub systems or can be output by the GPIO interface to control and/or synchronize
external devices.
Each individual trigger source has an output
signal, which can be logically H
I
GH or LOW. All trigger
source signals are stored in a trigger source state register to which all eight triggers have access.
Each trigger can combine several trigger sources by logical operations (AND, OR, etc.) which allows
to de
fi
ne very complex trigger logics. Additionally, the trigger signal can be delayed or debounced
to produce stable and reliable output signals that can be logically H
I
GH or LOW. The following sub
systems can use trigger signals:
•
Stream Generator, see section 7.6
–
start / stop / pause the data stream
–
de
fi
ne the rate at which the data frames are generated
•
Digital IO Interface, see section 7.4.1
–
output trigger signals as TTL or CMOS signals
•
Clock Generators, see section 7.5.1
–
start / stop a clock generator
•
Counters, see section 7.5.4
–
start / stop / increment a counter
The advanced trigger system can be con
fi
gured in the
Advanced Trigger System
panel of the
PICO
-
SCALE
Control GU
I
.
55
PicoScale User Manual
