Appendix B Common Questions
PCI/PXI-6703/6704 User Manual B-2 www.natinst.com
What is the best way to test my device without having to program it?
The Measurement and Automation Explorer has a Test panel with some
excellent tools for doing simple functional tests of the device, such as
testing the digital I/O lines. Also, the Test Configuration button will verify
that the logical address for the device is current.
Timing and Digital I/O
What are the power-on states of the DIO lines on the I/O connector?
At system power-on and reset, all lines are configured as inputs. Refer to
the Digital I/O Control section in Chapter 4, Hardware Overview, for more
information.
Analog Output
What are the power-on states of the voltage and current outputs?
At system power-on and reset, all analog outputs are at the values you last
saved.
How fast do the 6703 devices scan channels?
The 6703 devices have one 16-bit DAC that is time-division multiplexed to
create 16 voltage output and two calibration channels. The channels are
scanned at a rate of 50 µs per channel, thus a channel can change value a
maximum of 0.9 ms after it has been updated by software.
How fast do the 6704 devices scan channels?
The 6704 devices have one 16-bit DAC that is time-division multiplexed to
create 16 voltage output, 16 current output, and four calibration channels.
The channels are scanned at a rate of 50 µs per channel, thus a channel can
change value a maximum of 1.8 ms after it has been updated by software.
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