Guralp Systems Limited
MAN-050-0005 - CMG-5TD - Operator's Guide

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1. Preliminary Notes 2. Introduction 3. Quick start 4. Setting the gain 5. Operation 6. Calibration 7. Connector pin-outs 8. Specifications 9. Revision History

Chapter 2. Introduction

The CMG-5TD consists of a fully-integrated triaxial accelerometer (CMG-5T) and a matched 24-bit digitizer (DM-24) contained in a single, watertight package. It is compact, lightweight, and simple to deploy. It can resolve the full range of acceleration due to microearthquakes (0.1 uG resolution) up to strong local earthquakes (4 g resolution).

It is provided with a combination baseplate/mounting plate, which is separable and re-attachable, allowing for quick installation/removal and sensor site re-occupation if necessary. The DC offsets are available at the analogue output connector of the CMG-5TD and are user-accessible and adjustable via adjusting screws on the top cap of the instrument. A GPS receiver is used to provide accurate time-stamps for seismic data. The GPS receiver is attached to the CMG-5TD via a supplied 20 metre cable.

PreviousNext

1. Preliminary Notes 2. Introduction 3. Quick start 4. Setting the gain 5. Operation 6. Calibration 7. Connector pin-outs 8. Specifications 9. Revision History