Guralp Systems Scream - Manual (Page 77)

User guide
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mass control functions.
Some of these options can also be altered in the Configuration set-up
window. For more information on the Control window, see Chapter 8
on page 89.
7.1 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 5 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
Type you set here determines which functions will be available
through the Scream! digitiser configuration set-up interface or through
interactive commands.
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