Symbols And Terms; Safety And Electrical Symbols - Tektronix DMM4020 Technical Reference Manual

DMM4020
Technical Reference

Symbols and Terms

The following terms and safety and electrical symbols may appear in the manual or on
the product:
A  Warning statement identifies conditions or practices that could result in injury
or death.
A  Caution statement identifies conditions or practices that could result in damage to
the Meter or equipment to which it is connected.
To avoid electric shock, personal injury, or death, carefully read
the information under "General Safety Summary" before
attempting to install, use, or service the Meter.

Safety and Electrical Symbols

Symbol





or




CAT II
1-6
 Warning
Description
Risk of danger. Important
information. See manual.
Hazardous voltage. Voltage > 30 V
dc or ac peak might be present.
AC (Alternating Current)
DC (Direct Current)
AC or DC (Alternating or Direct
Current)
Continuity test or continuity beeper
tone
Potentially hazardous voltage
Double insulated
Measurement Category II is for
measurements performed on
circuits directly connected to the
low voltage installation.
Symbol Description

Display ON / OFF and Meter reset.

Earth ground

Capacitance

Diode

Fuse
Y
Digital signal

Maintenance or Service
Static awareness. Static discharge

can damage parts.
Measurement Category I is for
CAT I
measurements not directly
connected to mains.