User manual

Chapter 4 Connecting Signals
NI 6034E/6035E/6036E User Manual 4-4 ni.com
PFI0/TRIG1 DGND Input
Output
PFI0/Trigger 1—As an input, this signal is one of the
Programmable Function Inputs (PFIs). PFI signals are
explained in the Connecting Timing Signals section later
in this chapter. As an output, this signal is the TRIG1 (AI
Start Trigger) signal. In posttrigger data acquisition
sequences, a low-to-high transition indicates the initiation
of the acquisition sequence. In pretrigger applications, a
low-to-high transition indicates the initiation of the
pretrigger conversions.
PFI1/TRIG2 DGND Input
Output
PFI1/Trigger 2—As an input, this signal is one of the PFIs.
As an output, this signal is the TRIG2 (AI Stop Trigger)
signal. In pretrigger applications, a low-to-high transition
indicates the initiation of the posttrigger conversions.
TRIG2 is not used in posttrigger applications.
PFI2/CONVERT* DGND Input
Output
PFI2/Convert—As an input, this signal is one of the PFIs.
As an output, this signal is the CONVERT* (AI Convert)
signal. A high-to-low edge on CONVERT* indicates that an
A/D conversion is occurring.
PFI3/GPCTR1_SOURCE DGND Input
Output
PFI3/Counter 1 Source—As an input, this signal is one of
the PFIs. As an output, this signal is the GPCTR1_SOURCE
signal. This signal reflects the actual source connected to the
general-purpose counter 1.
PFI4/GPCTR1_GATE DGND Input
Output
PFI4/Counter 1 Gate—As an input, this signal is one of
the PFIs. As an output, this signal is the GPCTR1_GATE
signal. This signal reflects the actual gate signal connected
to the general-purpose counter 1.
GPCTR1_OUT DGND Output Counter 1 Output—This output is from the general-purpose
counter 1 output.
PFI5/UPDATE* DGND Input
Output
PFI5/Update—As an input, this signal is one of the PFIs. As
an output, this signal is the UPDATE* (AO Update) signal.
A high-to-low edge on UPDATE* indicates that the analog
output primary group is being updated for the NI 6035E and
NI 6036E.
PFI6/WFTRIG DGND Input
Output
PFI6/Waveform Trigger—As an input, this signal is one
of the PFIs. As an output, this signal is the WFTRIG (AO
Start Trigger) signal. In timed analog output sequences,
a low-to-high transition indicates the initiation of the
waveform generation.
PFI7/STARTSCAN DGND Input
Output
PFI7/Start of Scan—As an input, this signal is one of the
PFIs. As an output, this signal is the STARTSCAN (AI Scan
Start) signal. This pin pulses once at the start of each analog
input scan in the interval scan. A low-to-high transition
indicates the start of the scan.
Table 4-1. Signal Descriptions for I/O Connector Pins (Continued)
Signal Name Reference Direction Description
UM.book Page 4 Monday, May 14, 2001 10:32 AM