Guralp Systems CMG-DCM build <10,000 - Manual (Page 258)

Acquisition Modules and Platinum Firmware Technical operation
Most installations of the DCM will not require any more complex setting up
than the Web configuration system can offer. However, in some cases you
may need to take advantage of the flexibility offered by the underlying Linux
operating system.
For more information on using and configuring the CMG-DCM see the manual
MAN-DCM-0001.
15.3 24 Channel DAS
The CMG-DM24S24EAM comprises an EAM, interface board and 4 DM24
digitisers.
Originally built to process geophone signals, the DAS uses a system of
breakout boxes to transmit the analogue signals to the module. The Pelicase
and breakout boxes are shown in the images below
Each of the four breakout boxes has terminal connectors for up to 6 channels
and connects to the DAS using 32 pin mil spec connectors.
Other ports on the DAS are: Data out, Ethernet, USB and GPS and triggering.
For more information on the ports see section 2.5 on page 14. The connector
pinouts are the same as those for the Cylindrical Digitiser and are are given in
16.5 on page 273 and listed in the table below:
Port Section
Sensor Section 16.5.14 on page 286
Data Section 16.5.2 on page 274
Ethernet Section 16.5.4 on page 276
USB Section 16.5.3 on page 275
GPS Section 16.5.7 on page 279
MAN-EAM-0003 258 Issue E - February 2014