National Instruments usb device 625x 用户手册
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NI USB-622x/625x/628x OEM User Guide
Connecting the USB-622x/625x/628x OEM Device to
Your Chassis
Your Chassis
The USB-622x/625x/628x OEM device includes several plated mounting
holes that are designed for customer grounded connections, as shown in
Figure 12.
holes that are designed for customer grounded connections, as shown in
Figure 12.
Caution
Do not use the holes labeled A in Figure 12 as mounting holes.
Figure 12. Customer Mounting Holes
(USB-6225/6229/6255/6259/6289 OEM Shown)
Caution
(USB-628x Devices)
Exercise caution when placing USB-628x OEM devices inside
an enclosure. Auxiliary cooling may be necessary to keep the device under the maximum
ambient temperature rating of 45 °C, as specified in the NI 628x Specifications.
ambient temperature rating of 45 °C, as specified in the NI 628x Specifications.
Mounting Hole Connected
to Chassis Ground
to Chassis Ground
A
A
A
Do Not Use These
as Mounting Holes
as Mounting Holes
A