Power-On States; Static Dio; Event Counter; Reference And Power Sources - National Instruments USB-6008 User Manual And Specifications

Power-On States

Static DIO

Event Counter

Reference and Power Sources

+2.5 External References

+5 V Power Source

Note While the device is in USB suspend, the output is disabled.
USB-6008/6009 User Guide and Specifications
National Instruments has several signal conditioning solutions for
digital applications requiring high current drive.
• If you configure a DIO line as an input, do not drive the line with
voltages outside of its normal operating range. The DIO lines have a
smaller operating range than the AI signals.
• Treat the DAQ device as you would treat any static sensitive device.
Always properly ground yourself and the equipment when handling
the DAQ device or connecting to it.
At system startup and reset, the hardware sets all DIO lines to
high-impedance inputs. The DAQ device does not drive the signal high or
low. Each line has a weak pull-up resistor connected to it.
Each of the USB-6008/6009 DIO lines can be used as a static DI or DO
line. You can use static DIO lines to monitor or control digital signals. All
samples of static DI lines and updates of DO lines are software-timed.
You can configure PFI 0 as a source for a gated invertor counter input edge
count task. In this mode, falling-edge events are counted using a 32-bit
counter. For more information about event timing requirements, refer to the
Specifications section.
The USB-6008/6009 creates an external reference and supplies a power
source.
The USB-6008/6009 creates a high-purity reference voltage supply for
the ADC using a multi-state regulator, amplifier, and filter circuit. The
resulting +2.5 V reference voltage can be used as a signal for self test.
The USB-6008/6009 supplies a 5 V, 200 mA output. This source can be
used to power external components.
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