National Instruments PCI-6251 User Manual page 21

M Series User Manual
You can attach a wire to the ground lug screw of any USB-62xx device, as shown in Figure 1-3.
Figure 1-3. Grounding a USB-62 xx Device through the Ground Lug Screw
NATIONAL NI USB-62 xx
INSTRUMENTS
Multifunction I/O with
Correlated Digital I/O for USB
ACTIVE
READY
ON OFF
(USB-6225/625 /628 Screw Terminal Devices) You can attach and solder a wire to the
x x
chassis ground lug of certain USB-62xx Screw Terminal devices, as shown in Figure 1-4. The
wire should be as short as possible.
Figure 1-4. Grounding a USB-62 xx Screw Terminal Device through the Chassis Ground
Lug
(USB-62 BNC Devices) You can attach a wire to a CHS GND screw terminal of any
xx
USB-62xx BNC device, as shown in Figure 1-5. Use as short a wire as possible. In addition, the
wires in the shielded cable that extend beyond the shield should be as short as possible.
Figure 1-5. Grounding a USB-62 xx BNC Device through the CHS GND Screw Terminal
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