Guralp Systems CMG-CD24 - Manual (Page 37)

Operator's Guide
Usually, the transmit and receive rates of the data port will be the
same. If not, you may select different data rates by removing the tick
in the check-box marked Identical TX/RX rates.
The Stop Bits option allows you to choose whether the serial link uses
1 or 2 stop bits. In most cases this can be left at 1, although 2 may be
required if you are sending data over ‘difficult’ transmission lines (for
example, some types of radio link). Using 2 stop bits will add a 10%
overhead to the data.
You will also need to set the data rate for Scream's local serial port, as
well as for the EAM or other communications device (if you are using
one). In Scream!, you can configure a serial port by right-clicking on
the serial port's icon (not that of the digitiser) and selecting
Configure... from the pop-up menu. For more details, consult the
online help or user guide for Scream!. If you are using an additional
communications device, you should consult its documentation to
learn how to set its baud rate.
3.2 The control dialogue
To control a digitiser while it is running, either right-click on the
digitiser's entry in the list to the left of Scream!'s main window (not the
Local or COMXX icons) and click Control..., or simply double-click the
entry. Scream! will then contact the digitiser and retrieve its current
status, a process which will take a few seconds, after which the
Control window will be displayed. Once you are happy with any
changes you have made in the Control window, click Apply to send
them to the digitiser, where they will take effect immediately.
3.2.1 System
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