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USB (Virtual COM) Configuration
The USB will be recognized as a virtual COM on the PC, thus serial port settings must be
configured properly for remote communication to be successful. Find the settings used by the
880 meter below:
Baudrate: 9600
Data bits: 8
Parity: None
Stop bits: 1
Flow Control: None
USB Operation
There are two modes that describe the operation of the meter when it is setup for remote
communication. They are remote mode and auto fetching mode.
Remote Mode
Upon connecting to the instrument, sending any commands listed in the “Command Protocols”
section will automatically set the LCR meter into remote mode. In remote mode, the LCD
display will show the RMT indicator. When this is shown, all front panel buttons will be
disabled, except for the button.
To exit remote mode and go back to local mode, press the button once. The RMT
indicator will disappear on the LCD display. Pushing the same button once more will put the
meter into auto fetching mode, which is described in the next section.
Auto Fetching Mode
When connected to a PC, the meter can be configured to auto-fetching mode. This means, the
meter will continuously fetch data to the PC after every measurement cycle is completed. It
fetches data from measured readings of primary display and secondary display, as well as
tolerance compared results. This mode is useful when doing quick data logging using PC.
Enable/Disable Auto Fetching
To toggle between enabling and disabling auto fetching, press the . When enabled, data
will be fetched constantly after every measurement cycle is completed. When disabled, no
fetched data will be available.
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