Page 9.2
9.2. Logic inputs
Inputs are according to the following circuit:
Non-connected inputs are 0V potential (level 0).
Number of logic channels: from 1 to 12.
TTL level: 3.3V (protected up to 24V)
To create a rising edge, you only have to place a connection between the power input and
output of the connector.
Similarly, to create a falling edge, you only have to remove this connection.
You can also use an output signal TTL 3.3V.
Plotting and display:
They are displayed at the top or the bottom of the screen according to the selected position.
They are numbered from the right to the left.
Each channel is plotted between two dotted lines that show their limits.
Triggers:
You can use the logic channels to trigger the plotting and the data acquisitions (start and
stop). (AND or OR mode)
See chapter «
Trigger
».
9.3. Alarm outputs
Available contacts and outputs on the rear connector A , B C and D.
All outputs are TTL 5V.
When the appliance is powered off, outputs have a 5kΩ impedance
Signal for internal events to the outside toward the recorder (triggers on logic or analogic
channels, status of the printing block…)
See chapter «
Use
».
Summary of Contents for DAS220
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