Guralp Systems Limited
MAN-EAM-1100 - CD1.1 Tools for Platinum

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1. Preliminary Notes 2. Introduction 3. The CD1.1 modules 4. Typical configurations 5. Using the Multiplexor 6. Using the GDI to CD1.1 converter 7. Using the CD1.1 Receiver 8. Using the CD1.1 Sender 9. Frame database files 10. Logging and analysing 11. Authentication Management 12. Configuring DM24s and CD24s 13. Calibration Values 14. Optional flash memory 15. File reference 16. Revision history

Chapter 14. Optional flash memory

The EAM uses flash memory for its file system and the standard unit is fitted with 512 MiB. Of this, around 60 MiB is used for the system and, typically, an additional 64 MiB is used by GCF buffers. If MiniSEED is used, a further 64 MiB is required for buffering, leaving around 384 MiB available for the various CD1.1 databases.

This may be insufficient for a complex system or for one where it is desirable to retain significant frame history. For this reason, it is possible to order a EAM fitted with an additional flash memory module of arbitrary size (limited only by current industry standards).

The extra flash memory is mounted at /media/flash_module, so it is not automatically utilised by any Platinum software. To make use of the additional storage capacity, it is necessary to reconfigure one or more software modules. The CD1.1 modules that can be reconfigured in this way are given below:

Module: CD1.1 multiplexor (data-mux-cd11)
Parameter: Database directory
Usage: storage area for the frame database
(See Section 5.2.2)
Suggested location: /media/flash_module/data-mux-cd11.n
where n is the instance identifier.

Module: CD1.1 sender (data-out-cd11)
Parameter: Database directory
Usage: storage area for the transmission databases
(See Section
8.3.3 on page 40)
Suggested location: /media/flash_module/data-out-cd11.n
where n is the instance identifier.

PreviousNext

1. Preliminary Notes 2. Introduction 3. The CD1.1 modules 4. Typical configurations 5. Using the Multiplexor 6. Using the GDI to CD1.1 converter 7. Using the CD1.1 Receiver 8. Using the CD1.1 Sender 9. Frame database files 10. Logging and analysing 11. Authentication Management 12. Configuring DM24s and CD24s 13. Calibration Values 14. Optional flash memory 15. File reference 16. Revision history