Power Connections; Timing Connections - National Instruments PCI-6110E/6111E User Manual

Power Connections

Caution:
!

Timing Connections

Caution:
!
© National Instruments Corporation
Two pins on the I/O connector supply +5 V from the computer power
supply via a self-resetting fuse. The fuse will reset automatically within
a few seconds after the overcurrent condition is removed. These pins are
referenced to DGND and can be used to power external digital circuitry.
• Power rating
Under no circumstances should you connect these +5 V power pins directly
to analog or digital ground or to any other voltage source on the 611X E
board or any other device. Doing so can damage the 611X E board and the
computer. National Instruments is
such a connection.
Exceeding the maximum input voltage ratings, which are listed in
Table 4-2, can damage the 611X E board and the computer. National
Instruments is liable for any damages resulting from such signal
NOT
connections.
All external control over the timing of the 611X E board is routed
through the 10 programmable function inputs labeled PFI0 through
PFI9. These signals are explained in detail in the next section,
Programmable Function Input Connections.
bidirectional; as outputs they are not programmable and reflect the state
of many DAQ, waveform generation, and general-purpose timing
signals. There are five other dedicated outputs for the remainder of the
timing signals. As inputs, the PFI signals are programmable and can
control any DAQ, waveform generation, and general-purpose timing
signals.
The DAQ signals are explained in the
later in this chapter. The waveform generation signals are explained in
the Waveform Generation Timing Connections
chapter. The general-purpose timing signals are explained in the
General-Purpose Timing Signal Connections
chapter.
+4.65 to +5.25 VDC at 1 A
liable for damages resulting from
NOT
DAQ Timing Connections
4-15
Chapter 4 Signal Connections
These PFIs are
section
section later in this
section later in this
PCI-6110E/6111E User Manual