Section 2. Connecting with the analyzer
3 Install the USB cable
The USBconnection is the simplest way to connect the analyzer with a computer. If
you want to use the RS-232 serial connection instead, connect the cable to the serial
port, and install a serial-to-USB adapter on the serial cable, if needed.
4 Power on the gas analyzer
The LI-830 and LI-850 will turn on when power is supplied, so plug in the power
cable to turn it on. If you use an alternative power supply, it must be able to source
a minimum of 1.2 A at 12 VDC while the instrument warms up. After the warmup,
the instrument will draw about 0.3 A at 12 VDC.
5 Connect with the gas analyzer
Start the software.
Click the Connection button in the upper right of the display. Select your instru-
ment from the list, set the data rate, then click Connect. Data will populate the win-
dow after connecting. You can enter the COM port manually by checking Manual
Port and setting the port number (COM#).
If you are using Windows
®
7 or 8, install the drivers before you connect, as
described in Installing device drivers on page2-5.
2-2 Using the LI-830 and LI-850 Gas Analyzers
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