Hioki CHT3548, User Manual, Page: 33 / 81

Hope Electronics Technology Manual
Edition
V1.0 33
If an overvoltage is applied to a measurement terminal,
the function for protecting the internal circuitry is
activated in this instrument. If an overvoltage is
accidentally applied, remove the test leads from the
measurement target immediately. Measurement
cannot be performed while the protection function is
activated. In order to cancel the protection function,
contact test lead DRIVE+ to DRIVE- or turn the power
off and on.
Fuse blown out
Each SOURCE terminal of the instrument is equipped
with a fuse to protect against overvoltage input. If an
overvoltage is accidentally applied and a fuse is blown,
replace the fuse.
Temperature Sensor not connected
Temperature cannot be measured as the
Temperature Sensor is not connected. When TC or
ΔT is not used, it is not necessary to connect the
Temperature Sensor. If the temperature is not to be
displayed, switch the display by pressing the
[+]
(VIEW)
key.
Temperature calculation error
The Temperature Sensor is not connected even when
TC or ΔT is ON, or oF is displayed for the temperature.
Check the connection of the Temperature Sensor.
*1 Out-of-range detection function
Examples detected as out-of-range
IMPORTANT
If the measurement target is connected to the SOURCE terminal, but a SENSE
terminal has a bad contact, the displayed measured value may be unstable.