©NationalInstruments Corporation 2-1 NIPXI-562x User Manual
2
Hardware Overview
This chapter provides an overview of the features and functionality of
the NI 562x.

How the NI 562xWorks

A signal follows this path through the NI 562xto the hostcomputer:
1. Thesignal enters the NI 562xthrough the analog front panel connector,
INPUT.Refer to the Connecting Signals section to find more about the
front panel.
2. The signal is filteredand condit ioned. Gain and dither are applied to
the signal. Refer to the Conditioning the Signal—Impedance, Dither,
Gain, and AC Coupling section for more information.
3. The ADC convertsthe signal from analog to digital. Refer to the
Digitizing the Signal—The ADC section for more information.
4. (Optional) The digital downconverter(DDC) digitally zooms in
on data. Refer to the Incorporating the DDC section.
5. The data iss entt o onboard memory (the buffer).Refer to the Storing
Data in Memory section for additional information.
6. The datais transferred to the host computer via the PXI backplane.
Figure2-1. BasicSignal Flow
DDC
(Optional)
Filtering/
Conditioning ADC
Analog
Input
Onboard
Memory
P
X
I
B
u
s