Safety Instructions - Input Protection Limits - Extech Instruments GX900 User Manual

SAFETY INSTRUCTIONS – INPUT PROTECTION LIMITS
This meter has been designed for safe use, but must be operated with caution. The
rules listed in this safety section must be carefully followed for safe operation.
1. NEVER apply voltage or current to the meter that exceeds the specified maximum:
V DC or V AC
Frequency, Resistance,
Capacitance, Duty Cycle, Diode
Test, Continuity
Temperature
2. USE EXTREME CAUTION when working with high voltages.
3. DO NOT measure voltage if the voltage on the "COM" input jack exceeds 1000V
above earth ground.
4. NEVER connect the meter leads across a voltage source while the function switch is
in the current, resistance, or diode mode. Doing so can damage the meter.
5. ALWAYS discharge filter capacitors in power supplies and disconnect the power
when making resistance or diode tests.
6. ALWAYS turn off the power and disconnect the test leads before opening the covers
to replace the fuse or batteries.
7. NEVER operate the meter unless the back cover and the battery and fuse covers are
in place and fastened securely.
8. If the equipment is used in a manner not specified by the manufacturer, the
protection provided by the equipment may be impaired.
Input Protection Limits
Function
mA AC/DC
A AC/DC
Maximum Input
1000V DC/AC rms
800mA 1000V fast acting fuse
10A 1000V fast acting fuse
1000VDC/AC rms
1000VDC/AC rms
8
Extech Instruments
GX900-EU-EN V1.6 4/14