Guralp Systems CMG-DCM build <10,000 - Manual (Page 190)

CMG-EAM (Platinum Firmware)
14.2 Authenticated Digitisers.
Güralp Systems Ltd's authenticated digitisers provide a CMG-DM24
and a CMG-EAM in a single package: a stainless steel or aluminium
cylinder with an optional carrying/mounting bracket. An internal
Spyrus PC card provides authentication and digital signing of CD1.1
frames and subframes.
The system is fitted with variable gain analogue inputs, tamper-
detection lines on all key connectors and an internal USB storage
device, which is available to external USB host devices such as laptop
computers.
The connectors are significantly different from other packages. The
analogue connectors are grouped at one end of the cylinder:
190 Issue C