Model 77 Series IV
Users Manual
2
• Do not use a current measurement as an indication
that a circuit is safe to touch. A voltage measurement
is necessary to know if a circuit is hazardous.
• Do not use the Product if it is damaged.
• Disable the Product if it is damaged.
• Do not use the Product above its rated frequency.
• Do not use in CAT III or CAT IV environments without
the protective cap installed on test probe. The
protective cap decreases the exposed probe metal to
<4 mm. This decreases the possibility of arc flash
from short circuits.
• Replace a blown fuse with exact replacement only for
continued protection against arc flash.
• Do not use the HOLD function to measure unknown
potentials. When HOLD is turned on, the display
does not change when a different potential is
measured.
• Attempting to make a measurement with a test lead in
an incorrect terminal might blow a fuse, damage the
Meter, and cause serious personal injury.
Symbols
Symbol Description Symbol Description
AC (Alternating Current)
Fuse
DC (Direct Current)
P
Conforms to European Union directives
DC/AC
)
Certified by CSA Group to North American
safety standards.
Earth
T
Double insulated
W
WARNING. RISK OF DANGER.
X
WARNING. HAZARDOUS VOLTAGE. Risk of
electric shock.
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