multifunction-rio-user-manual.pdf - 第62页
© National Instruments Corporation G-1 Mult ifunction Reconfigurable I/O User Manual Glossar y Symbol Pref ix V a lue pp i c o 1 0 –1 2 nn a n o 1 0 –9 µ micro 10 –6 m milli 10 –3 k kilo 10 3 Mm e g a 1 0 6 Gg i g a 1 0 …
Appendix C Technical Support and Professional Services
Multifunction Reconfigurable I/O User Manual C-2 ni.com
• Declaration of Conformity (DoC)—A DoC is our claim of
compliance with the Council of the European Communities using
the manufacturer’s declaration of conformity. This system affords
the user protection for electromagnetic compatibility (EMC) and
product safety. You can obtain the DoC for your product by visiting
ni.com/certification.
• Calibration Certificate—If your product supports calibration,
you can obtain the calibration certificate for your product at
ni.com/calibration.
If you searched
ni.com and could not find the answers you need, contact
your local office or NI corporate headquarters. Phone numbers for our
worldwide offices are listed at the front of this manual. You also can visit
the Worldwide Offices section of
ni.com/niglobal to access the branch
office Web sites, which provide up-to-date contact information, support
phone numbers, email addresses, and current events.
© National Instruments Corporation G-1 Multifunction Reconfigurable I/O User Manual
Glossary
Symbol Prefix Value
ppico10
–12
nnano10
–9
µ micro 10
–6
m milli 10
–3
k kilo 10
3
Mmega10
6
Ggiga10
9
Numbers/Symbols
° Degrees.
> Greater than.
≥ Greater than or equal to.
< Less than.
≤ Less than or equal to.
– Negative of, or minus.
Ω Ohms.
/Per.
% Percent.
± Plus or minus.
+ Positive of, or plus.
Square root of.
+5V +5 VDC source signal.
Glossary
Multifunction Reconfigurable I/O User Manual G-2 © National Instruments Corporation
A
A Amperes.
A/D Analog-to-digital.
AC Alternating current.
ADC Analog-to-digital converter—An electronic device, often an integrated
circuit, that converts an analog voltage to a digital number.
AI Analog input.
AI<i> Analog input channel signal.
AIGND Analog input ground signal.
AISENSE Analog input sense signal.
AO Analog output.
AO<i> Analog output channel signal.
AOGND Analog output ground signal.
B
bipolar A signal range that includes both positive and negative values (for example,
–5 to +5 V).
C
CCelsius.
CalDAC Calibration DAC.
CH Channel—Pin or wire lead to which you apply or from which you read the
analog or digital signal. Analog signals can be single-ended or differential.
For digital signals, you group channels to form ports. Ports usually consist
of either four or eight digital channels.
cm Centimeter.