Guralp Systems CMG-3ESPCD User Manual
Page 40
CMG-3ESPCD Digital Broadband Seismometer
Using Scream!
Some of these options can also be altered in the Configuration set-up window.
For more information on the Control window, see section 5.2 on page 53.
If you need a more powerful interface to the digitiser, you can also issue
commands to it directly using Scream!'s terminal mode. A terminal window
is opened by right-clicking on the digitiser's entry in the list and selecting
Terminal.... The digitiser will stop collecting data while you have a terminal
window open. The remaining sections of this chapter describe in detail the
configuration options available for the digitiser. Many of these options will
also be available for other Güralp digitisers
5.1.1 System ID
The System ID pane gives information about the digitiser and its internal
software, and allows you to change GPS timing parameters.
•
System Identifier and Serial Number : The digitiser type is identified
by its system identifier and serial number. Every data and status block
generated by the digitiser includes these two fields at the beginning, so
that the block’s origin can be identified. On delivery from the factory,
the system identifier and the serial number are set to the GSL works
order number and the digitiser’s serial number, but any combination of
letters A-Z and numbers can be used, such as an abbreviation of your
institution’s name, etc. The system identifier can be up to 6 characters
long, whilst the serial number cannot be longer than 4.
•
Sensor Type : If the sensor attached to the digitiser is a Güralp velocity
sensor, useful seismometer functions (such as sensor locking, centring,
and calibration) may be controlled through the digitiser. The Sensor
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Issue B - November 2013