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Operating Precautions
Before making a connection to the USB connector
CAUTION
• To avoid equipment failure, do not disconnect the USB cable while communications
are in progress.
• Use a common ground for both the instrument and the computer. Use of different
ground circuits will result in a potential difference between the instrument's ground
and the computer's ground. If the USB cable is connected while such a potential
difference exists, it may result in equipment malfunction or failure.
Before connecting to the RS-232C or GP-IB connectors
CAUTION
• Use a common ground for the instrument, computer and programmable controller.
Use of different ground circuits will result in a potential difference between the
instrument's ground and grounds of the computer and programmable controller. If the
communications cable is connected while such a potential difference exists, it may
result in equipment malfunction or failure.
• After connecting the communications cable, tighten the screws on the connector
securely. Failure to secure the connector could result in equipment malfunction or
damage.
Before connecting a USB flash drive
CAUTION
• Inserting a USB flash drive upside down, backwards or in the wrong direction may
damage the USB flash drive or the instrument.
• Some USB flash drives are susceptible to static electricity. Exercise care when using
such products because static electricity could damage the USB flash drive or cause
malfunction of the instrument.
With some USB flash drives, the instrument may not start up if power is turned on while the USB
flash drive is inserted. In such a case, turn power on first, and then insert the USB flash drive.
It is recommended to try out operation with a USB flash drive before starting to use it for actual
measurements.
Before switching the current sink (NPN) / current source (PNP)
CAUTION
• Never switch between NPN and PNP while the instrument's power is on.
• Configure the NPN/PNP setting based on the externally connected device.
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