Tektronix 7D20 Operator's Manual page 15

POWER SOURCE
GROUNDING THE PRODUCT
WARNINGS
DANGER ARISING FROM LOSS OF GROUND
7D20 Operators
This product is intended to operate in a mainframe connected to a power source
that will not apply more than 250 volts rms between the supply conductors or
between either supply conductor and ground . A protective ground connection by
way of the grounding conductor in the mainframe power cord is essential for safe
operation .
This product is grounded through the grounding conductor of the mainframe power
cord . To avoid electrical shock, plug the mainframe power cord into a properly wired
receptacle before connecting to the product input or output terminals . A protective
ground connection by way of the grounding conductor in the mainframe power cord
is essential for safe operation .
Upon loss of the protective-ground connection, all accessible conductive parts
(including knobs and controls that may appear to be insulating), can render an
electric shock .
DO NOT OPERATE IN EXPLOSIVE ATMOSPHERES
To avoid explosion, do not operate this product in an atmosphere of explosive gases .
DO NOT REMOVE COVERS OR PANELS
To avoid personal injury, do not remove the product covers or panels . Do not operate
the product without the covers and panels properly installed .
DO NOT OPERATE WITHOUT COVERS
To avoid personal injury, do not operate this product without covers or
panels
installed . Do not apply power to the plug-in unit via a plug-in extender .
REV SEP 1982
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