K-Patents PR-33-AC User Manual

Page 11

2 Instrument connections

2.3.3 IP settings for a stand-alone computer

When a computer with automatical IP settings (DHCP enabled) is turned on in a network

with only the Sanitary OEM Refractometer, the computer should automatically obtain

an IP address 169.254.x.x. In this case the factory default address of the refractometer

can be used for connecting without any further changes in settings. If this does not

work, make sure that the WLAN (Wireless network connection) is not active on the

computer that is connected to the refractometer. If the WLAN is active, the computer’s

Ethernet connection may not function as expected. Also, obtaining the 169.254.x.x.

address may take up to a minute.

If the connection to the instrument still cannot be achieved, the computer’s IP ad-

dress can be checked by opening the command window (command prompt) and by

typing the command

ipconfig

at the command prompt (press Enter to give the com-

mand), see ﬁgure 2.5 (in Mac OS X and Linux the same command is called

ifconfig

The information given will include the computer’s IP address. If the address does not

start by 169.254, the IP address of the computer needs to be conﬁgured manually to

169.254.23.34, netmask 255.255.0.0.

For further troubleshooting, see section 2.3.6.

Figure 2.5

Typical IP conﬁguration for a stand-alone laptop when connected to a

Sanitary OEM Refractometer; laptop wireless (WLAN) is turned oﬀ