pico Technology PicoScope 4225A Guía De Seguridad página 54

Safety Guide
Current probes are marked with their maximum voltage rating, which applies when clamped over
an uninsulated conductor.
To prevent injury or death, do not use any current probe on an uninsulated conductor operating
outside the probe's marked voltage protection levels.
To prevent injury or death, do not fit a current probe over an energized, uninsulated hazardous live
conductor unless the probe is expressly marked as safe to do so by using the
de-energize uninsulated circuits before fitting probes marked with the
When measuring currents in uninsulated circuits connected directly to the mains supply, always
use probes with the appropriate CAT ratings.
To prevent injury or death, always follow the CAT rating of the probe and do not use a non CAT-
rated current probe to measure mains current.
Always use extreme caution when working around bare conductors or bus bars. Contact with
the conductor could result in electric shock. Always follow relevant industry-standard safety
procedures and use appropriate Personal Protective Equipment (PPE) where applicable. Safety
training is essential in these cases and should be separately gained.
All current probes have a maximum RMS current rating which may be derated depending on the
measurement frequency in accordance with the table below.
Probe maximum RMS current by frequency
Probe 400 Hz to
< 400 Hz
TA018 60 A
TA019 600 A
TA167 2000 A 200 A
TA189 30 A
TA234 30 A
TA388 2000 A 200 A
TA408 100 A 100 A
TA473 60 A
To avoid damage to the probe and inaccurate readings, do not use a current probe on a circuit
that exceeds the probe's maximum rated frequency or the maximum rated RMS current at the
measurement frequency
Failure to observe the above safety precautions may cause damage to the current probe leading to
an effective reduction in its safe voltage rating and CAT rating.
DO336-1
PicoScope 4225A and 4425A automotive oscilloscope and accessories
1 kHz to 10 kHz to
1 kHz 10 kHz 20 kHz
60 A 40 A –
– – –
40 A –
30 A 30 A 30 A
30 A 30 A 30 A
40 A –
100 A 100 A
60 A 60 A 60 A
WARNING
WARNING
WARNING
Auto
20 kHz to
power-off
60 kHz
– no
– no
– yes
30 A yes
– no
– N/A
– N/A
– N/A
CAUTION
WARNING
symbol. Always
symbol
Power supply/battery Connection
6LR61 / PP3
6LR61 / PP3
6LR61 / PP3
6LR61 / PP3
6LR61 / PP3
Oscilloscope
Oscilloscope
Oscilloscope
BNC
BNC
BNC
BNC
BNC
PicoBNC+
PicoBNC+
PicoBNC+
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