Keysight U1273A Manual De Instrucciones página 29

Input warning
To avoid circuit damage and possibly blowing the multimeter's current fuse,
CAUTION
do not place the probes across (in parallel with) a powered circuit when a
lead is plugged into a current terminal. This causes a short circuit because
the resistance through the multimeter's current terminals is very low.
The multimeter emits a continuous beep and displays Error ON A INPUT or Error
ON mA INPUT when the test lead is inserted into the µA mA or A input terminal
but the rotary switch is not set to the correct current position.
Figure 1-3
Figure 1-4
This warning is intended to stop you from attempting to measure voltage,
continuity, resistance, capacitance, diode, or temperature values when the leads
are plugged into a current terminal.
Keysight U1273A/U1273AX User's Guide
Input warning display (A INPUT)
Input warning display (mA INPUT)
Introduction 1
29