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Guralp Systems CMG-CD24 User Manual

Page 38

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CMG-CD24

When the Control window is first opened, it will be showing the
System pane.

Sensor Type : This option tells Scream! which control commands to

make available to the user.

If you change the Sensor Type, you may have to Apply the change,

close the Control window, and open a new one to access the Mass
Control
options.

Enable GPS power cycling : If you are using a GPS unit to receive time
signals, but do not experience significant drift in the system's clock

(for example, in a stable-temperature environment), you can save
power by selecting Enable GPS power cycling.

When this option is selected, the CD24 will only check the GPS time at
intervals of a specified number of hours.

3.2.2 Triggering

The Triggering pane is very similar to the corresponding pane of the
Configuration setup window, although not all options are available

since some require rebooting the digitiser. See section 3.1 on page 25
for more details.

3.2.3 Calibration

You can check that your instrument is correctly calibrated by injecting
known signals into the sensor's feedback loop. The Calibration pane

allows you to do this.

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