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
μ
A/mA
≥
440 mA or +OL
≤
–440 mA or –OL
≥
440 mA or OL
CAUTION
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.