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Keysight E1458A 96-Channel Digital I/O Module Service Guide
General Information
Safety Considerations
Safety Considerations
This product is a Safety Class I instrument that is provided with a protective earth
terminal when installed in the mainframe. The instrument, mainframe, and all
related documentation should be reviewed for familiarization with safety
markings and instructions before operation or service.
Refer to the WARNINGS page in this manual for a summary of safety information.
Safety information for testing and service follows and is also found throughout
this manual.
Warnings and Cautions
This section contains WARNINGS which must be followed for your protection
and CAUTIONS which must be followed to avoid damage to the equipment when
performing instrument maintenance or repair.
SERVICE-TRAINED PERSONNEL ONLY. The information in
this manual is for service-trained personnel who are
familiar with electronic circuitry and are aware of the
hazards involved. To avoid personal injury or damage to
the instrument, do not perform procedures in this manual
or do any servicing unless you are qualified to do so.
CHECK MAINFRAME POWER SETTINGS. Before applying
power, verify that the mainframe setting matches the line
voltage and that the correct fuse is installed. An
uninterruptible safety earth ground must be provided from
the main power source to the supplied power cord set.
GROUNDING REQUIREMENTS. Interruption of the
protective (grounding) conductor (inside or outside the
mainframe) or disconnecting the protective earth terminal
will cause a potential shock hazard that could result in
personal injury. (Grounding one conductor of a
two-conductor outlet is not sufficient protection.)
IMPAIRED PROTECTION. Whenever it is likely that
instrument protection has been impaired, the mainframe
must be made inoperative and be secured against any
unintended operation.
REMOVE POWER IF POSSIBLE. Some procedures in this
manual may be performed with power supplied to the
mainframe while protective covers are removed. Energy
available at many points may, if contacted, result in
personal injury. (If maintenance can be performed without
power applied, the power should be removed.)
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