The following is an example of an invalid Class C addressing scheme:
Device
IP Address
QGE 100 viewing computer | 208.132.180.41 |
|
|
QGE 100 encoder 1 | 192.157.180.42 |
QGE 100 encoder 2 | 209.100.123.43 |
NOTE: The above addresses are invalid because the network identifier for each 
address is not the same even though each IP address is unique.
You can perform a test from your computer to check that a device at a particular address is responding correctly or to determine its address (see “Pinging for the IP Address”).
Subnet Mask
The subnet mask is another
It is important that you set the correct value for the subnet mask. The basic values depend on the class of IP address being used.
Class Name
Subnet Mask
Class A | 255.0.0.0 |
Class B | 255.255.0.0 |
|
|
Class C | 255.255.255.0 |
See “Subnetting, a Primer” on page 51 for more information.
Pinging for the IP Address
To access the QGE 100 via the Ethernet port, you need the encoder IP address. If the address has been changed to an address comprised of words and characters, the actual numeric IP address can be determined using the Ping utility. If the address has not been changed, the
Ping can also be used to test the Ethernet link to the QGE 100.
Ping to determine the Extron IP address
The Microsoft Ping utility is available at the command prompt. Ping tests the Ethernet interface between the computer and the encoder. It can also be used to determine the actual numeric IP address from an alias and to determine the web address.
Ping the QGE as follows:
1.From the Windows Start menu, select Run... . The Run window opens.
2.In the Open text field, enter command.
3.Click OK. A command window opens.
QGE 100 • Reference Information | 50 |
