Keysight U1281A/U1282A Quick Start Guide 9
Keysight U1281A/U1282A Quick Start Guide 9
Safety Alerts and Warnings
Hazardous voltage indication
The multimeter will display the hazardous voltage
( ) symbol as an early precaution when the
measured voltage is:
This symbol will also be displayed when the input
signal exceeds the limitation of measuring circuit as
frequency dependence.
Hazardous current indication
The multimeter will display the hazardous current
( ) symbol as an early precaution when the
measured current has reached the maximum fuse
rating as follows:
Measurement DC AC
V (mV) ≥ +30 V or +OL ≤ –30 V or –OL ≥ 30 V or OL
Measurement DC AC
A ≥ +11 A or +OL ≤ –11 A or –OL ≥ 11 A or OL
μA/mA ≥ 440 mA or +OL ≤ –440 mA or –OL ≥ 440 mA or OL
If your measuring current is > 10 A ~ 19.999 A, you
will need to lower the current within a 30-second
time limitation to avoid blowing the multimeter’s
fuse.
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