Guralp Systems CMG-DM24 - Manual (Page 83)

Operator's guide
5.10 Downloading over the serial port
DOWNLOAD
Syntax: DOWNLOAD
Sets up a data transfer from the Flash memory over the serial
connection. Which data is downloaded depends on the current
read point, as well as various user-configurable parameters, which
allow you to select a particular stream, streams of a specified sample
rate or streams within a certain time window. You can set parameters
separately or string the definitions before the DOWNLOAD command.
For example,
ALL-FLASH STREAM HPA0N1 DOWNLOAD
2004 12 01 00 00 FROM-TIME ALL-DATA DOWNLOAD
100 S/S ALL-TIMES DOWNLOAD
See below for full details of the parameter-setting commands.
After each download completes, the read point is normally set to
indicate the start of the first unread block – i.e. where downloading
would normally resume. The exception is a download issued after an
ALL-DATA command, which does not affect the read point. The read
point can be reset with the ALL-FLASH command, described below.
The DOWNLOAD command, when invoked with no parameters, starts
another download with the same parameters as last time.
The DOWNLOAD command returns immediately, so that you can issue
more commands if required. To close the connection and begin
downloading, issue the GO command. You can pause the download by
entering terminal mode, and then either restart it (with another GO) or
abort it with the command END-DOWNLOAD.
ALL-FLASH
Syntax: ALL-FLASH
Sets the read point to the oldest data held by the DM24. This
command does not alter which streams are to be transmitted; you
should specify streams or use the ALL-DATA command in addition to
this one.
October 2009 83