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4 cable connections, 5 troubleshooting, Cable connections – Metrohm Vision Manual User Manual

Page 92: Troubleshooting

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compatibility or the user can change the IP address in the computer.

If the instrument is not connected to a network, use a crossover cable to connect between the
computer and the instrument and the static IP address will be assigned. This will work most of the
time; however, a crossover cable is not the most reliable approach to communication.

A hub can be used safely for a direct connect. There are 2 types of hubs.

One hub design has no DHCP capabilities. This design is limited but is better than using a

crossover cable. Cost is about $20

The second design has DHCP capabilities and therefore works just like you were connected to

a DHCP Server and provides a dynamic IP address. Cost is about $50

3.16.4

Cable Connections

Network Connections – one standard Ethernet cable (blue) from the instrument to a network

connection, and one standard Ethernet cable (blue) from the computer to a network
connection.

Direct Connect or Crossover connection – one crossover cable (gray) from computer to

instrument.

Hub Connection – one standard Ethernet cable (blue) from the computer to the hub, and one

standard Ethernet cable (blue) from the hub to the instrument.

3.16.5

Troubleshooting

If Vision “doesn’t see instrument” it may be caused by incompatible IP Address and/or Subnet

Mask.

Change IP Address as explained later in this section

Change the Subnet Mask as explained later in this section. The Subnet Mask is listed in the

4th line of the Notepad entry (ex. Subnet=255.255.255.0)

If 2 network cards are used (not recommended mode of operation!), and Subnet masks and IP

addresses are compatible and you still can’t see the instrument, type in “XXX.XXX.XXX.XXX,
port=2083” in Configure/Input Menu, inside IP Address box in NIRSystems XDS-series
Instrument Configuration, and try to connect.