Vaisala K-PATENTS PR-43, Руководство пользователя

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3.4.4 Testing Ethernet connection
When the refractometer is connected to a switch, the corresponding link light illuminates in
the switch.
Once the refractometer is powered up, it should be reachable from any correctly configured
computer. Typing the IP address of the refractometer to the address bar of a web browser
brings up the refractometer homepage, see Web interface (page 16) .
The factory-default IP address of the refractometer is 169.254.43.43. This address
always responds, see
IP settings for PR-43 (page 12) .
3.4.5 Troubleshooting connection
If the refractometer cannot be reached through the network, check the following:
1. The refractometer receives power; the Ethernet switch link light is lit.
2. The network settings of the computer are compatible with those of the refractometer, see
IP settings for stand-alone computer (page 12) .
3. If the refractometer should be at IP address 169.254.43.43, but cannot be reached, check
that there is only one refractometer in the same network, as otherwise there is an address
conflict.
4. Check that the software firewall of the computer does not block the connections.
A useful test to determine whether the problem is in network settings is to set up a small
network. Perform the following steps:
1. Set up a network of only one refractometer and one computer.
2. Check that the computer has suitable network settings and that its WLAN connection is
turned off, see IP settings for stand-alone computer (page 12) .
3. Use the ping utility of the computer to try and reach the refractometer.
The ping utility is available in Windows systems by using the Command Prompt (usually found
in the Accessories; or open Run, type
cmd
in the empty line and press ENTER to open
Command Prompt). Go to the command interface, type the name of the command and the IP
address you want to check and press ENTER . If the Ethernet connection is physically working
and the address given to ping is correct, the refractometer answers the ping and return any
data packets sent to it.
PR-43 Series User Guide M212455EN-B
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