National Instruments NI 4050 用户手册
© National Instruments Corporation
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NI 4050 Operation
This chapter contains safety instructions, measurement fundamentals and
concerns, and scanning information.
concerns, and scanning information.
Safety Instructions
Cautions
To avoid personal injury or damage to electronic equipment, observe the
following:
Do not operate this instrument in an explosive atmosphere or where there may be
flammable gases or fumes.
flammable gases or fumes.
Equipment described in this document must be used in an Installation Category II
environment per IEC 664. This category requires local level supply mains-connected
installation.
environment per IEC 664. This category requires local level supply mains-connected
installation.
The NI 4050 must be used in a UL-listed laptop or personal computer.
To prevent safety hazards, the maximum voltage between either of the inputs and the
ground of the computer should never exceed ±250 VDC or 250 V
ground of the computer should never exceed ±250 VDC or 250 V
rms
.
Do not operate damaged equipment. The safety protection features built into this
instrument can become impaired if the instrument becomes damaged in any way. If the
instrument is damaged, do not use it until service-trained personnel can check its safety.
If necessary, return the instrument to National Instruments for service and repair to ensure
that its safety is not compromised.
instrument can become impaired if the instrument becomes damaged in any way. If the
instrument is damaged, do not use it until service-trained personnel can check its safety.
If necessary, return the instrument to National Instruments for service and repair to ensure
that its safety is not compromised.
Do not operate this instrument in a manner that contradicts the information specified in this
document. Misuse of this instrument could result in a shock hazard.
document. Misuse of this instrument could result in a shock hazard.
Do not substitute parts or modify equipment. Because of the danger of introducing
additional hazards, do not install unauthorized parts or modify the instrument. Return the
instrument to National Instruments for service and repair to ensure that its safety is not
compromised.
additional hazards, do not install unauthorized parts or modify the instrument. Return the
instrument to National Instruments for service and repair to ensure that its safety is not
compromised.
Connections that exceed any of the maximum signal ratings on the NI 4050 can create a
shock or fire hazard or can damage any or all of the devices connected to the NI 4050.
National Instruments is not liable for any damages or injuries resulting from incorrect
signal connections.
shock or fire hazard or can damage any or all of the devices connected to the NI 4050.
National Instruments is not liable for any damages or injuries resulting from incorrect
signal connections.
Clean the instrument and accessories by brushing off light dust with a soft, nonmetallic
brush. Remove other contaminants with a stiff nonmetallic brush. The unit must be
completely dry and free from contaminants before returning to service.
brush. Remove other contaminants with a stiff nonmetallic brush. The unit must be
completely dry and free from contaminants before returning to service.