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Safety Guide
TA400 + TA411 AND TA499 PICO AUTOMOTIVE SCOPE PROBES
The frequency derating plot below indicates the full-scale measurement limit for this probe.
To avoid overloading the probe, note that its maximum input voltage rating decreases as the
frequency of the applied signal increases.
These probes do not carry a measurement category rating. To prevent electric shock, do not
connect to a utility power (line) voltage or a derived voltage that can carry the overvoltage
transients that may be present. Measurement categories for the automotive scope probe are
defined in IEC 61010-031 as follows:
No Measurement Category (not in CAT II, CAT III, or CAT IV)
Definition
For measurements performed on circuits not directly connected to a utility power
supply.
Do not use the TA411 probe tip adaptor or the TA499 PicoBNC+ automotive 10:1 scope probe for
connection to hazardous live voltages.
TA432 PICO RESISTANCE LEADS
Pico resistance measuring accessories having terminals marked with
disconnected circuits where no voltage is present.
Attempting to measure the resistance of a conductor where a voltage is present will give
inaccurate readings and may damage the resistance measurement accessory, the scope, and any
other accessories connected to your PC.
DO336-4
PicoScope 4225A and 4425A automotive oscilloscopes and accessories
WARNING
Frequency (Hz)
WARNING
CAUTION
Ω
are for use only on
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