CEM DT-338, User Manual

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1. Safety
1-1. International Safety Symbols
This symbol, adjacent to another symbol or terminal, indicates the user must
refer to the manual for further information.
This symbol, adjacent to a terminal, indicates that, under normal use,
hazardous voltages may be present
Double insulation
1-2. Safety Notes
• Do not exceed the maximum allowable input range of any function
• Do not apply voltage to meter when resistance function is selected.
• Set the function switch OFF when the meter is not in use.
1-3. Warnings
• Set function switch to the appropriate position before measuring.
• When measuring volts do not switch to current/resistance modes.
• When changing ranges using the selector switch always disconnect the test
leads from the circuit under test.
• Do not exceed the maximum rated input limits.
1-4. Cautions
Improper use of this meter can cause damage, shock, injury or death. Read
and understand this user manual before operating the meter. Always remove
the test leads before replacing the battery. Inspect the condition of the test leads
and the meter itself for any damage before operating the meter. Repair or replace
any damage before use.
Use great care when making measurements if the voltages are greater than
25VAC rms or 35VDC. These voltages are considered a shock hazard. Remove
the battery if the meter is to be stored for long periods.
Always discharge capacitors and remove power from the device under test
before performing Diode, Resistance or Continuity tests.
• Voltage checks on electrical outlets can be difficult and misleading because
of the uncertainty of connection to the recessed electrical contacts. Other
means should be used to ensure that the terminals are not "live".
• If the equipment is used in a manner not specified by the manufacturer, the
protection provided by the equipment may be impaired.
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True RMS Low Current Clamp Meter User Manual