Chapter 4 Hardware Overview
© National Instruments Corporation 4-5 NI 5102 User Manual
Figure 4-6.
NI 5102 (PXI) I/O Connectors
Signal Connections
You can use CH0 and CH1 to digitize data as well 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 clock connection. When used as outputs, PFI lines can output Start
Trigger, Stop Trigger, Scan Clock, and End of Acquisition signals as well
as Analog Trigger Circuit Output, frequency output, and TTL low and high
voltage information. Signal names and descriptions vary depending on the
acquisition mode you are using. See the Acquisition Modes section later
in this chapter for more information on timing and triggering.
Table 4-1. I/O Connector Signal Descriptions
Signal Description
CH0, CH1 Digitizes data and triggers acquisitions
TRIG Used for external analog triggering
PFI1, PFI2 Software-configurable digital triggers,
external scan clock, or digital outputs
AUX for
NI 5102 (PXI) only
Serial communication or PFI2
(with optional cable)
T
R
I
G
C
H
1
C
H
0
AUX
PFI1
NI 5102
