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dataTec GmbH ▪ Ferdinand-Lassalle-Str. 52 ▪ 72770 Reutlingen ▪ Tel. 07121 / 51 50 50 ▪ Fax 07121 / 51 50 10 ▪ info@datatec.de ▪ www.datatec-gruppe.de
USB DAQ, U2100A DIO
Quick comparison: Standalone digital input and output modules
U2121A DIO Module
U2122A digital input
module
U2123A digital output
module
Digital I/O
Number of lines 16 input, 16 output 32 input 32 output
Input characteristics
Input voltage 0 to 24 V 0 to 24 V n/a
Input logic voltage (low/high) < 1.3 V / > 3.5 V < 1.3 V / > 3.5 V n/a
Input propagation delay 100 μs (opto-isolator) 100 μs (opto-isolator) n/a
Output characteristics
Output load voltage
(maximum)
24 V n/a 24 V
Output low voltage 1.2 V n/a 1.2 V
Output propagation delay 100 μs (opto-isolator) n/a 100 μs (opto-isolator)
Other features
Device type Software timed Software timed Software timed
Operating capabilities • Programmable
power-up states
• Watchdog timer
• Edge detection
• Digital filter
• Edge detection
• Digital filter
• Programmable
power-up states
• Watchdog timer
Set digital inputs and observe the status of outputs easily.
Control up to five RF switches and configure the
watchdog timer, edge detection and digital filter
applications using the RF Switch Driver Application
software.
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