Keysight Technologies Digital multimeter, U1270-series, 30000 counts, CAT III 1000 V, CAT IV 600 V U1273A Manual Do Utilizador
Códigos do produto
U1273A
U1271A/U1272A Service Guide
V
WA R N I N G
• When measuring current, turn off the circuit power before
connecting the multimeter in the circuit. Remember to place the
multimeter in series with the circuit.
multimeter in series with the circuit.
• When servicing the multimeter, use only the specified
replacement parts.
• Use caution when working above 60 V DC, 30 V AC RMS, or 42.4 V
peak. Such voltages pose a shock hazard.
• Be aware of the presence of hazardous voltage before using the
Low Pass Filter (LPF) function for voltage measurement. Voltages
measured are usually greater than what indicated on the
multimeter as the voltages with higher frequencies have been
filtered through the LPF function.
measured are usually greater than what indicated on the
multimeter as the voltages with higher frequencies have been
filtered through the LPF function.
• Do not use the Z
LOW
(low input impedance) function (U1272A
only) to measure voltages in circuits that could be damaged by
this function’s low input impedance of 2 k
this function’s low input impedance of 2 k
Ω.
• When using the probes, keep your fingers behind the finger
guards on the probes.
• Connect the common test lead before you connect the live test
lead. When you disconnect the leads, disconnect the live test lead
first.
first.
• Remove the test leads from the multimeter before you open the
battery cover.
• Do not operate the multimeter with the battery cover or portions
of the cover removed or loosened.
• To avoid false readings, which may lead to possible electric shock
or personal injury, replace the battery as soon as the low battery
indicator appears and flashes.
indicator appears and flashes.