National Instruments NI PXIe-5644R, Руководство по началу работы

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14. Power on the chassis.
Direct Connections to the NI 5644R
The NI 5644R is a precision RF instrument that is sensitive to ESD and transients. Ensure you
take the following precautions when making direct connections to the NI 5644R to avoid
damaging the device.
Caution
Apply external signals only while the NI 5644R is powered on. Applying
external signals while the device is powered off may cause damage.
• Ensure you are properly grounded when manipulating cables or antennas connected to the
NI 5644R RF IN connector.
• If you are using nonisolated devices, such as a nonisolated RF antenna, ensure the
devices are maintained in a static-free environment.
• If you are using an active device, such as a preamplifier or switch routed to the NI 5644R
RF IN connector, ensure that the device cannot generate signal transients greater than the
RF and DC specifications of the NI 5644R RF IN connector.
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