Guralp Systems CMG-RTM - Manual (Page 9)

Operator's Guide
The unit is now free-running under battery power and can be
transported to the deployment site, where the target digitiser should be
plugged into the right-hand connector, which will then provide power.
The CMG-RTM will provide accurate timing to the digitiser.
Note: The CMG-RTM will not provide positional
information to the digitiser. Only timing information is
generated.
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