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PicoScope 4225A and 4425A automotive oscilloscopes and accessories
TA466 TWO-POLE VOLTAGE TESTER
To prevent injury or death use the product only as instructed and use only accessories that have
been supplied or recommended. Protection provided by the product may be impaired if used in a
manner not specified by the manufacturer.
Please take into account the output impedance of the device under test (DUT) and determine if
the voltage detector is a suitable instrument. If the output impedance of the source circuit (on the
DUT) is high, the voltage detector could become a voltage divider and cause an incorrect reading.
When the voltage detector is in contact with the DUT, it can temporarily reduce the measured
voltage below the ELV level and allow it to return to the original value when the voltage detector is
removed. If the "voltage present" indicator does not come on, we strongly recommend you install
earthing equipment before starting work.
If the "voltage present" indicator comes on when you check a part that is meant to be
disconnected from the installation, we strongly recommend you use other methods (for example
a different type of voltage detector or a visual check of the electric circuit at the disconnection
point) to confirm that there is no operating voltage on the DUT and to check if the voltage
indicated by the voltage detector is intermittent.
To prevent electric shock, do not attempt to measure voltages outside of the specified full scale
measurement range or with an applied common-mode voltage that is outside specification and
do not attempt to connect voltages outside the overvoltage protection range.
Full-scale measurement range
690 V AC or 950 V DC
Exceeding the overvoltage protection range on any cable, connector, or accessory can cause
permanent damage to the probe and other connected equipment.
The probe does not have a protective safety ground.
To prevent electric shock, do not touch exposed connections and components when power is
present.
12
WARNING
WARNING
Overvoltage protection (DC + AC peak)
CAT IV 600 V, CAT III 1000 V relative to earth (ground)
CAUTION
WARNING
WARNING
Safety Guide
DO336-4
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