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Guralp Systems CMG-DM24 User Manual

Page 65

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Operator's guide

output-spec is an integer below 32, whose bits tell the digitizer

which status lines to output.

Setting bit 0 (1) produces lines showing the current internal
clock offset, frequency error, and GPS fix type. For example:

2006 9 4 13:13:00 2 MicroSeconds Fast Freq error 0 e-9

Auto 3D [-4]

Setting bit 1 (2) produces lines showing the current GPS offset,

drift, PWM measure, and fix type. For example:

2006 9 4 13:13:00 o/s= 340 drift= 0 pwm= 8382 Fix= "3D"

Setting bit 2 (4) produces lines showing the GPS latitude and
longitude. For example:

2006 9 4 13:13:00 Lat= "51'21.6526N" Long="001'09.8148W"

Setting bit 3 (8) produces lines like

Boot Log : Power_cycles= 11 Watchdog_resets= 51

Last boot 2006 8 23 08:49:22 2006 8 23

08:50:40 Run 12Days 04:22:20

showing the number of times the digitizer has been reset, with

the time of the last reset and the current up-time.

Setting bit 4 (16) produces lines showing the current power
supply voltage and temperature. For example:

2006 9 4 13:13:00 External supply : 14.3V Temperature

29.75'C

The bits should be logically ORed (i.e. the decimal numbers added) to

produce multiple status lines. For example, the command

6 SETDSS (= 2 + 4)

will cause the digitizer to begin outputting status blocks containing
GPS timing and position information only:

2006 9 4 13:13:00 o/s= 340 drift= 0 pwm= 8382 Fix= "3D"

2006 9 4 13:13:00 Lat= "51'21.6526N" Long="001'09.8148W"

To use a DM24 with a DCM running a DSS server, you should issue

31 SETDSS

To return to normal operation, issue the command

October 2009

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