Chapter4 HardwareOverview
©NationalInstruments Corporation 4-5 NI5102 User Manual
Figure4-6. NI5102 (PXI) I/O Connectors
Signal Connections
You can useCH0 and C H1 to digitizedata aswell as to trigger an
acquisition. Use the TRIG channel for an external analog trigger only;
data on the TRIG channel cannot be digitized. PFI1 and PFI2 are digital
signals that you can use for timing-critical applications. When used as
inputs, PFI lines can trigger an acquisition and/or allow an external
scan clockconnection. When used as outputs, PFI lines can output Start
Trigger, Stop Trigger, Scan Clock, and End of Acquisition signals as well
asAnalog Trigger Circuit Output, frequency output, and TTL low and high
voltageinformation. Signal names and descriptio ns vary depending on the
acquisitionmode y ou are using. See the Acquisition Modes section later
in this chapter for more information on timing and triggering.
Table4-1. I/OConnector Signal Descriptions
Signal Description
CH0,CH1 Digitizes data and triggers acquisitions
TRIG Usedfor externalanalog triggering
PFI1,PFI2 Software-configurabledigital triggers,
externalscan clock, or digital output s
AUX for
NI5 102 (PXI) only
Serialcommunication orPFI2
(with optional cable)
T
R
I
G
C
H
1
C
H
0
AUX
PFI1
NI5102