+5 V Power Source - National Instruments 6711 User Manual

Chapter 2 I/O Connector
Table 2-2. I/O Connector Signal Descriptions (Continued)
I/O Connector
Pin
PFI 9/CTR 0
GATE
CTR 0 OUT
CAL
FREQ OUT
Caution
signals on the AO Series device can damage the device and the computer. Refer to
the specifications document for your device for more information on maximum input
ratings for each signal. NI is not liable for any damage resulting from signal
connections that exceed the maximum ratings.

+5 V Power Source

The +5 V pins on the I/O connector supply +5 V power. You can use these pins, referenced to
D GND, to power external circuitry. A self-resetting fuse protects the supply from overcurrent
2-10 | ni.com
Reference Direction
D GND Input
Output
D GND Input
Output
D GND Input
D GND Output
Connections that exceed any of the maximum ratings of input or output
Signal Description
PFI 9—As an input, this pin is a
general-purpose input terminal and can
also be used to route signals directly to the
RTSI bus. This is the default input for the
Ctr0Gate signal.
Counter 0 Gate Signal—As an output,
this pin emits the Ctr0Gate signal. This
signal reflects the actual gate signal
connected to Counter 0. For more
information, refer to Chapter 5, Counters.
Counter 0 Output Signal—As an input,
this pin can be used to route signals
directly to the RTSI bus. For more
information, refer to Chapter 5, Counters.
As an output, this pin emits the
Ctr0InternalOutput signal.
Calibration—Voltage input for external
calibration. For more information on using
this signal, refer to the AO Waveform
Calibration Procedure for NI-DAQmx
document by selecting Manual
Calibration Procedures at
.
calibration
Frequency Output Signal—This output
is from the frequency generator. For more
information, refer to Chapter 5, Counters.
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