Guralp Systems CMG-DCM User Manual

Page 14

CMG-DCM Data Communications Module

Allow a short time for the DCM to reconfigure the network.

3. On your computer, select Start Control Panel Network

→

Connections. Right-click on the interface connected to the DCM,
and select Properties.

4. Click on Internet Protocol (TCP/IP), then Properties.

5. Select

Use the following IP address, and fill in an address on the

same subnet as the DCM (

e.g. 192.168.0.49). Click OK, then

OK in the

Connection Properties window.

6. Check that you can connect to the DCM using its new IP address

by opening its Web site at

http://192.168.0.2/

Advanced usage: If you later want to connect your computer to a

local area network, you can make the DCM visible to that
network by setting up a network bridge.

Before doing this, you

must make sure that the IP addresses you have chosen for the
DCM and your computer are suitable for the local network you

want to connect it to.

To set up the bridge, open the

Network Connections window,

and select the connections corresponding to the DCM and your

network. Click Bridge connections, and follow the instructions
in the wizard.

If you are using Linux or another operating system, you should see its

own documentation for more details.

Using an internal modem

If you have ordered a DCM with an internal PCMCIA modem, it will

automatically listen for incoming PPP connections. This is most useful
if the DCM is integrated into a borehole instrument, which can then be

connected to a modem at a central data collection point. The modem
within the DCM appears on the Web configuration interface as a serial

port, allowing you to change the service it provides and the data
transfer settings it uses. For example, if you do not want the internal

modem to use PPP, you can configure it to use

mgetty instead and log

in directly.

Connecting over USB

If your DCM is equipped with the USB

client interface, you can

Issue F