Contec AIO-121602LN-USB User Manual page 85

6. Function
Clock
The sampling clock controls the sampling frequency. You can select from among the internal sampling
clock, or the external sampling clock. The sampling clock is selected by means of software.
- Internal sampling clock
The clock signal from the on-product clock generator is used.
- External sampling clock
The edge of the digital signal input from an external device is used for the sampling clock.
Start Condition
The condition for controlling the stop of sampling can be selected from among the last sampling count,
an external trigger, software.
The product stops sampling whenever an error occurs irrespective of the stop condition setting.
- Software
The product starts sampling and storing input data to memory immediately after the operation start
command is issued.
- External trigger
The product starts waiting for an external control signal as soon as the operation start command is
output.
Sampling and data transfer from memory start when the specified edge (rising edge or falling edge)
is input from the external control signal.
Stop Condition
The condition for controlling the stop of sampling can be selected from among the last sampling count,
an external trigger, software.
The product stops sampling whenever an error occurs irrespective of the stop condition setting.
- Last sampling count
The product stops sampling after storing input data to memory for the specified number of times of
sampling.
- External trigger
The product starts waiting for an external control signal after the specified number of samples have
been performed.
Sampling stops when the specified edge (rising edge or falling edge) is input from the external
control signal.
- Software
Sampling continues indefinitely in this mode. Sampling only stops in response to a software
command or an error.
Event
"Event" works as a function for reporting the occurrence of a certain product state to the application.
The following events can be used in combination depending on the specifications and purpose of the
application.
- "DA conversion start condition satisfied" event
This event occurs when the DA conversion start condition is satisfied. The event is nullified when
the conversion start condition is "software".
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AIO-121602LN-USB, AIO-120802LN-USB