Guralp Systems Limited

Güralp Systems Limited

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Introduction Installing the CMG-DM24 Using the DM24 Using Scream! Command line interface Inside the DM24  Güralp Compressed Format Connector pinouts Digitizer specifications Revision history

Introduction

The Güralp CMG-DM24 multi-channel digitizer is a state-of-the-art digital module for seismic data. It can be supplied in several different formats:

A stand-alone DM24 (below) can be installed with existing or new analogue sensors. Conversely, a modular digitizer is fixed to, and becomes a physical part of, a Güralp seismometer. These can be supplied with new instruments, or retrofitted to CMG-1T, 3T, 3ESP or 40T seismometers at the factory. A modular digitizer benefits from the sensor's isolated, clean and stable environment and allows it to operate at optimum noise levels and precision

The DM24 can also be supplied in borehole sonde form, with optional strain relief accessories. All these units operate identically, although the connector for the borehole unit is necessarily more compact.

DCM-integrated

A DM24 is especially powerful when operated in conjunction with a Güralp data module such as the CMG-DCM or AM. All three types - sensor, digitizer, and data module - can be customized to meet your installation requirements.

Features

The DM24 can be connected to two Güralp analogue sensors, or up to six conventional single-axis seismometers, through its SENSOR A and SENSOR B connectors. (Single-sensor and integrated DM24 units have only SENSOR A connectors). Signals from these sensors are digitized to 32-bit precision, initially at 2000 Hz. Data is output through the DATA OUT serial port of the digitizer in the flexible GCF format, either to a PC or a Güralp data module. Timing signals are gathered from a GPS unit connected to the single GPS port.

Next

Introduction Installing the CMG-DM24 Using the DM24 Using Scream! Command line interface Inside the DM24  Güralp Compressed Format Connector pinouts Digitizer specifications Revision history