USB-230 Series

Summary

USB-230 Series devices provide improved cost/performance compared to our similarly priced 16-bit DAQ devices. The USB-231 and USB-234 both offer eight analog inputs, two analog outputs, eight DIO channels, and one counter input.

Analog Input
Both USB-230 Series devices provide four differential (DIFF)/eight 16-bit single-ended (SE) analog inputs with a fixed analog input range of ±10 V.

Sample Rate
The maximum continuous sample rate is an aggregate rate for USB-230 Series devices, up to 100 kS/s.

Analog Output
USB-230 Series devices provide two 16-bit analog outputs. One or both outputs can be updated at a rate up to 5 kS/s per channel. The output range is fixed at ±10 V.

Digital I/O
Eight TTL-level digital I/O lines are included with USB-230 Series devices. Each digital channel is software-selectable for input or output.

Digital input voltage ranges from 0 V to 5 V are permitted, with thresholds of 0.8 V (low) and 2.3 V (high).

When used in output mode, each digital channel allows for 3.3 V operation with a source/sink current limit of V4 mA.

All DIO lines are set to high-impedance inputs at system startup and reset. The device does not drive the signal high or low. Each line has a weak pull-down resistor connected to it.

All digital I/O updates and samples are software-paced.

Digital Trigger Input
USB-230 Series devices include an external digital trigger input that is software-selectable for rising edge or falling edge detection.

Counter Input
USB-230 Series devices support one 32-bit edge counter (rising) that accepts inputs up to 5 MHz.