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Symbols Marked on Equipment
DANGER — High Voltage
Protective ground (earth) terminal
Attention — refer to the manual. This symbol indicates that information about
the usage of a feature is contained in the manua
l.
Power Source
The 5700A/5720A Series II is intended to operate from a power source that will not
apply more than 264V ac rms between the supply conductors or between either supply
conductor and ground. A protective ground connection by way of the grounding
conductor in the power cord is essential for safe operation.
Use the Proper Fuse
To avoid fire hazard, use only the fuse specified on the line voltage selection switch
label, and which is identical in type voltage rating, and current rating.
Grounding the 5700A/5720A Series II
The 5700A/5720A Series II is Safety Class I (grounded enclosure) instruments as
defined in IEC 348. The enclosure is grounded through the grounding conductor of the
power cord. To avoid electrical shock, plug the power cord into a properly wired earth
grounded receptacle before connecting anything to any of the 5700A/5720A Series II
terminals. A protective ground connection by way of the grounding conductor in the
power cord is essential for safe operation.
Use the Proper Power Cord
Use only the power cord and connector appropriate for proper operation of a
5700A/5720A Series II in your country.
Use only a power cord that is in good condition.
Refer cord and connector changes to qualified service personnel.
Do Not Operate in Explosive Atmospheres
To avoid explosion, do not operate the 5700A/5720A Series II in an atmosphere of
explosive gas.
Do Not Remove Cover
To avoid personal injury or death, do not remove the 5700A/5720A Series II cover. Do
not operate the 5700A/5720A Series II without the cover properly installed. There are no
user-serviceable parts inside the 5700A/5720A Series II, so there is no need for the
operator to ever remove the cover.
Do Not Attempt to Operate if Protection May be Impaired
If the 5700A/5720A Series II appears damaged or operates abnormally, protection may
be impaired. Do not attempt to operate it. When in doubt, have the instrument serviced.