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BNC-2120 Installation Guide
To connect the BNC-2120 to your DAQ device, complete the following steps. Consult your
computer or PXI/PXI Express chassis user manual for specific instructions and warnings.
Note
If you have not already installed your DAQ device, refer to the
DAQ Getting
Started
guides for instructions.
Caution
Do
not
connect the BNC-2120 to any device other than National
Instruments E/M/S/X Series multifunction DAQ devices. Doing so can damage the
BNC-2120, the DAQ device, or the host computer. National Instruments is
not
liable
for damage resulting from these connections.
1.
Place the BNC-2120 near the host computer or PXI/PXI Express chassis or use the optional
DIN Rail Mounting kit for UMI-FLEX-6 and BNC boxes (Part Number 777972-01), which
you can order from National Instruments at
ni.com
.
Caution
Do
not
connect input voltages greater than 42.4 V
pk
/60 VDC to the
BNC-2120. The BNC-2120 is not designed for any input voltages greater than
42.4 V
pk
/60 VDC, even if a user-installed voltage divider reduces the voltage to within
the input range of the DAQ device. Input voltages greater than 42.4 V
pk
/60 VDC can
damage the BNC-2120, all devices connected to it, and the host computer. Overvoltage
can also cause an electric shock hazard for the operator. National Instruments is
not
liable for damage or injury resulting from such misuse.
2.
Connect the BNC-2120 to the DAQ device using the appropriate cable for your DAQ
device, as listed in Table 1.
Caution
To ensure the specified EMC performance, operate this product only with
shielded cables and accessories.
Table 1.
BNC-2120 Cabling Options
Number
of Pins
DAQ Device
Shielded
Recommended Cable
Unshielded
Cable
68-pin
DAQCard E Series,
NI PCI/PCIe/PXI/PXIe M Series
*
NI 6143 S Series,
PCIe/PXIe/USB X Series
SHC68-68-EPM
RC68-68
PCI/PXI E Series,
USB Mass Termination M Series
*
,
NI 611
x
/612
x
/613
x
S Series
†
SH68-68-EPM
R6868
†
100-pin
PCI/PXI E Series
SH1006868
—
Caution
: For compliance with Electromagnetic Compatibility (EMC) requirements, this product must
be operated with shielded cables and accessories. If unshielded cables or accessories are used, the EMC
specifications are no longer guaranteed unless all unshielded cables and/or accessories are installed in a
shielded enclosure with properly designed and shielded input/output ports.
*
You cannot connect the BNC-2120 to Connector 1 of NI 6225/6255 devices.
†
Do
not
use the R6868 cable with NI 6115/6120 S Series devices; use
only
the SH68-68-EPM cable.
