Guralp Systems CD1.1 - Manual (Page 25)

Operator's Guide
5 Using the GDI to CD1.1 converter
This module is used to encode data from non-CD1.1 sources
into standards-compliant CD1.1 subframes. It should be used,
for example, when data from directly attached digitisers and
digital instruments is to be transmitted using CD1.1.
The converter maps incoming channel names to CD1.1 names,
which consist of three parts: station (5 characters), channel (3
characters) and location (2 characters), separated by periods.
A note in the CD1.1 standard states that the IMS receiving
software does not use the location field for anything.
5.1 Creating a new GDI to CD1.1 converter
instance
In the web interface, select “Configuration -> Services” from
the left-hand menu or from the command line, run
gconfig
and then select “System services”.
Now choose “gdi2cd11 -- CD1.1 converter/subframe generator”
to view a list of configured converter instances. You can
choose to either configure any existing instance (as described
in the following section) or select “Create new service
instance” to create a new one.
A form is displayed which allows you to set various parameters
for the instance. Each parameter is discussed in the following
section. After entering the desired configuration for the
instance, choose Submit.
This will create (if it is new) and configure the converter
instance. If it is not already running, you can start it by using
“Control -> Services” on the web menu or by running
/etc/init.local/gdi2cd11.0 start
from the command line.
The zero after the period in the command name determines
which converter instance is to be started, so the command to
start a second instance would be
June 2010 25