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3. Communicating with PC via USB
The USB cable can be connected/disconnected even if the power to the instrument is ON. However, in this manual,
the power must be turned OFF before connecting the USB cable.
Communicating with PC via USB is possible in CA-200 mode only.
[Connecting Method]
1. Set the POWER switch to OFF.
2. Connect the USB cable to the USB port on the in-
strument.
3. Check that the USB cable’s plug is fully inserted and
connected firmly.
● Use the USB cable of 2m or less.
● When disconnecting the USB cable, pull it by holding the plug. Never
pull the cable by its cord.
● Pay attention to the shape of the USB cable’s plug and make sure that
the correct USB plug is connected to the USB port on the instrument.
● If the computer has two or more USB ports, the USB cable can be
connected to any of them.
● When it uses at the same time with other machines, it doesn't sometimes work normally.
<Notes on Communication via USB>
● One computer cannot control more than two instruments (i.e. only one instrument can be controlled by one
computer).
● If you want to control more than two instruments from one computer, connect them via RS-232C. It is not
possible for one computer to control one instrument via USB and another instrument via RS-232C.
● With CA-100 compatible mode, it is not possible to use USB. To connect the PC to the instrument via USB,
make sure that CA-200 mode is used.
4. Remote Measurement
In remote measurement mode, the instrument is controlled from the computer.
[Operating Procedure]
1. Press the REMOTE key.
The REMOTE LED will light up, indicating the instrument is ready for remote measurement (i.e. ready for
communication via RS-232C or USB).
USB port
USB cable
RS-232C cable or USB cable
REMOTE LED