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National Instruments Corporation
7
BNC-2110 Installation Guide
Connecting Analog Outputs
The BNC-2110 has BNC connectors for up to eight analog output channels.
These connectors are labeled AO <0..7>. The number of AO connectors
you use depends on the DAQ device connected to the adapter and your
application. When using connectors AO <7..2>, make sure the switch is
in the FS position.
Connecting Digital/Timing I/O
Use both the Digital and Timing I/O spring terminals and the user-defined
BNC connectors to connect digital signals to your DAQ device. When
connecting signals to the spring terminals, you can use up to 24 AWG wire
with the insulation stripped to 0.28 in. Refer to Table 2 for a description of
the terminal block connectors.
The terminal blocks on the BNC-2110 are spring terminals for easy access.
You can change these blocks to screw terminals by installing the available
screw terminal kit.
Two user-defined BNC connectors, USER 1 and USER 2, are connected to
the terminal blocks on the BNC-2110 front panel. These terminals and their
associated BNC connectors give you the flexibility to choose up to two
additional digital/timing signals. For example, if an application requires
access to AI HOLD COMP and CTR 1 OUT signals, you can wire the
spring terminals labeled AI HOLD COMP and CTR 1 OUT to the spring
terminals labeled USER 1 and USER 2, respectively. This setup configures
BNC connector USER 1 as AI HOLD COMP and USER 2 as CTR 1 OUT.
All of the digital and timing signals from the E Series, S Series, and
waveform generation Multifunction DAQ devices are available on the front
panel of the BNC-2110. Refer to your DAQ device documentation for
information on using these signals.
Table 4 describes the digital terminals on the front panel of the BNC-2110.
Table 4.
BNC-2110 Digital Terminal Descriptions
Terminal
Description
PFI <1..9>
Programmable Function Input lines 1 through 9
D GND
Digital Ground—This pin supplies the reference for the
digital signals at the I/O connector as well as the +5 VDC
supply
USER 2
User-defined 2—Connected to USER 2 BNC, this terminal
provides a user-definable BNC terminal
F OUT
Frequency Output—Output from the frequency generator
