Minicom Advanced Systems CMG-DCM manual Cmg-Dcm

CMG-DCM

•a case-sensitive code for the sensor type (see Appendix B.2, “Digitizer type codes”);

•a case-sensitive code for the digitizer type (see Appendix B.2, “Digitizer type codes”);

•the sensitivity of the sensor, prefixed with a V for a sensitivity in V/m/s, or A for a sensitivity in V/m/s2 (in the example, around 1 V/m/s). Note that there is no colon between the sensitivity and its unit.

The sensitivity is given on the sensor's calibration sheet. The sensitivity of a sensor integrated with a digitizer is quoted as a single-endedsensitivity, whilst stand-alone digitizers are provided with their differential sensitivity. A differential sensitivity is quoted as, e.g. 2 × 3000 V/m/s. In this file, you should use the doubled value, i.e. 6000 V/m/s, for a stand-alone digitizer. For integrated digitizers, you should use the single-ended value quoted.

•the sensitivity of the digitizer, in volts per count (here 1.6 × 10-7V/count = 0.16 μV/count). This is given on the digitizer's calibration sheet.

•the decimation sequence code. This is an integer between 0 and 239 which describes the sequence of filters in use by the digitizer. If you have a recent digitizer (with firmware newer than version 0.91) this information is included in the incoming GCF streams, so you can leave this field blank. The codes corresponding to each possible decimation sequence are available from the support section of the Gü ralp Systems Web-site.

When you have finished editing the file, clicking Save changes will write the changes to disk. The changes will not take effect, however, until the SEED service is restarted. You can restart the SEED volume generator by clicking Restart SEED recorder.

64 Issue A