Guralp Systems CMG-DM24 - Manual (Page 7)

Operator's guide
2.3 Connecting external hardware
On a stand-alone DM24, the digital ports are located on the opposite
side to the analogue ports:
The DM24 outputs data through its DATA OUT port. This is a
standard RS232 serial link, outputting data in GCF format according to
the particular configuration of the instrument. The DM24 has a default
baud rate of 38,400. You can change this later using the BAUD
command or from Güralp Systems' control, acquisition and monitoring
software package, Scream! (see chapter 4).
A GPS connector is also provided on the front panel for attaching to a
GPS receiver. GPS signals are sent to both digitizers simultaneously,
but only the one to which it is directly attached can control the GPS
system.
The DATA IN port can be used to access the digitizer's console over a
direct serial link, or for inputting additional data streams for
transmission in GCF format.
Finally, the DM24 can be supplied with an optional USB client
interface for connecting to a PC. When this is present, the USB port
acts as a direct replacement for the DATA OUT or console port, and
appears as an additional serial port to your computer. You can
configure which port is replaced from the digitizer console (see
chapter 5).
FireWire disks
The optional IEEE.1394 (“FireWire”) ports on the DM24 may be used
to download data onto a compatible hard disk. The unit can be
supplied either with standard FireWire connectors or with robust mil-
spec plugs (see Section 8.5, page 117, for pinout details).
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