AppendixC CommonQuestions
6023E/6024E/6025EUser Manual C-2 ni.com
Installation and Configuration
Howdo I set the base address for my device?
The basea ddress of your deviceis assigned automati cally through the
PCI/PXI busprotoco l.T his assignment is completely transparent to you.
Whatjumpers should I beaware of when configuring my E Series
device?
The ESeries devices are jumperless and switchless.
Which National Instruments document should I read firstto get
startedu sing DAQsoftware?
YourNI-DAQ or application software release notesdocumentation is
alwaysthe best starting place.
Whatversion o f NI-DAQmust I have to use my 6023E/6024E/6025E?
You mus t ha v e NI-DAQ for PC Compatibles version 6.5 or higher to use a
PCIa PXI device. To use the DAQCard-6024Eyou must have NI-DAQ for
PC compatiblesversion 6.9 or higher.
Analog Input and Output
I’m using my devicein differential analog input mode and I have
connecteda differential input signal, but my readings are random and
driftrapidly. What’swrong?
Checkyour ground-reference connections. Yoursignal can be referenced to
al evelthat is considered floating with reference to the device ground
reference.Even if you are in differential mode, you must still reference the
signalto the same ground level as the board reference. There are various
methods of achievingthis whil em aintaining a high common-mode
rejection ratio (CMRR). These methods are outlined in Chapter 4, Signal
Connections.
I’m usingthe DACsto generate a waveform, but I discoveredwith a
digital oscilloscope that therea reglitches on the o utput signal. Is this
normal?
Whenit switches from on evoltage to another, any DAC produces glitches
due to released charges.The largest glitches occur when the most
significantbit (MSB) of the D/A code switches. You can build a lowpass