Installing the DM24
3.3 Connecting external hardware
On a stand-alone DM24, the digital ports are located on the opposite side to the
analogue ports:
The DM24 transmits data through its DATA OUT port. This is an RS232-compatible
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
from the command line using the
BAUD
command or from Güralp Systems' control,
acquisition and monitoring software package, Scream! (see Chapter 5 on page 35).
A
GPS
connector is also provided on the front panel for attaching to a Güralp GPS
receiver.
The
DATA IN
port can be used to access the digitiser'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 digitiser console (see
Chapter 6 on page 41).
3.3.1 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 military-specification bayonet plugs (see Section 9.5 on
page 125 for pin-out details).
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Issue U - December, 2021
