Trillium Compact User Guide © 2015 Nanometrics Inc. All Rights Reserved. Trillium Compact Seismometer User Guide Applies to the following products: Product Name Model Number Part Number Trillium Compact, 120 second TC120-SV1 16838 Trillium Compact, 20 second TC20-SV1 16838-20 Trillium Compact Posthole, 120 second, 300 m TC120-PH2 17327 Trillium Compact Posthole, 20 second, 300 m TC20-PH2 17327-20 The information in this document has been carefully reviewed and is believed to be reliable. Nanometrics Inc. reserves the right to make changes at any time without notice to improve the reliability and function of the product. No part of this publication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of Nanometrics Inc. Nanometrics Inc. 250 Herzberg Road, Kanata, Ontario, Canada K2K 2A1 Tel +1 613-592-6776 Fax +1 613-592-5929 Email [email protected] www.nanometrics.ca Part number 16889R7 Release date 2015-11-02 About This Document Document Conventions Essential and Supplementary Information Explains a risk of irreversible damage to data, software, or equipment Warning and provides recommendations for preventive action. Explains a risk of damage to data, software, or equipment where Caution recovery is likely to be troublesome and provides recommendations for preventive action. Provides additional information related to the current text. Note Explains a best practice or provides helpful information related to the Tip current text. Provides an example related to the current text. Example Text Conventions bold text Identifies referenced elements in the graphical user interface (GUI) (for example, “click Cancel to discard the changes”). italic text Identifies variables such as parameter names and value placeholders (for example, “select Configuration > Sensor Name”). courier text Identifies commands that must be entered exactly as shown (for example, “type mkdir $APOLLO_LOCATION/config”). Changes Included in This Revision Revision number 16889R7 includes the following changes: Corrected errors around frequency response and calibration input sensitivity. See Chapter 9, “Transfer Function and Noise Floor”. Changed power consumption levels to approximately 180 mW for 120 s models and approximately 195 mW for 20 s models. (See Section 4.6 “Power Consumption” on page 28.) Updated cable part number 18005. (See Table 1-1 “List of cables and accessories” on page 4.) Removed information relating to obsolete models. Formatting and typographical changes. Trillium Compact User Guide iii 16889R7 2015-11-02 Contents About This Document . iii Document Conventions . iii Changes Included in This Revision . iii Part 1 Installation Chapter 1 Getting Started 1.1 About Trillium Compact Seismometers . 2 1.2 Unpacking and Handling a Trillium Compact . 3 1.3 Selecting a Site . 4 1.4 Cables and Accessories . 4 1.5 Technical Support and Maintenance. 6 1.5.1 Recording Your Serial Number and IP Address. 6 1.6 Site Record . 7 Chapter 2 Performing a Posthole Installation 2.1 Installing a Trillium Compact Posthole. 8 2.2 Aligning a Trillium Compact Posthole to North . 9 2.2.1 Using a Surface Line . 9 2.2.2 Using a Surface Seismometer . 10 2.3 Troubleshooting Your Installation . 11 Chapter 3 Performing a Surface Vault Installation 3.1 Planning Your Installation . 12 3.2 Recommendations for Pier Construction . 12 3.2.1 Choosing the Right Concrete . 13 3.2.2 Decoupling the Pier and Vault Walls . 13 3.3 Common Types of Installations . 13 3.3.1 Vault Installations . 13 3.3.2 Temporary Installations on Rock . 14 3.4 Alignment, Levelling, and Placement Features. 15 3.5 Best Practices for Alignment and Levelling . 17 3.6 Theory and Practice of Insulation . 18 3.7 Insulation Options . 20 3.7.1 Insulating with the Insulating Cover . 20 3.7.2 Insulating with a Rigid Foam Box . 21 Trillium Compact User Guide iv 16889R7 2015-11-02 Contents 3.8 Installing a Trillium Compact in the Insulating Cover. 21 3.9 Troubleshooting Your Installation . 24 Part 2 Operation Chapter 4 Input and Output Signals 4.1 UVW and XYZ Output Signals . 26 4.2 Serial RS-232 Communications. 27 4.3 Digital Control Input Signals . 27 4.4 Calibration Input Signal . 28 4.5 State-of-Health Output Signal . 28 4.6 Power Consumption . 28 Chapter 5 Configuring Your System 5.1 Selecting the Trillium Compact Configuration for a Nanometrics Instrument . 29 5.2 Using a Trident Digitizer with a Trillium Compact . 29 5.3 Increasing System Sensitivity. 31 Chapter 6 Configuring Serial Communications 6.1 About Serial Communications . 32 6.2 Connecting through a Nanometrics Digitizer . 32 6.3 Calculating the IP Address . 33 Chapter 7 Using the Web Interface 7.1 About the Web Interface . 34 7.2 State-of-Health. 35 7.3 Seismometer Control. 35 7.4 Control Lines. 36 7.5 Sensor Response . 36 7.6 Hardware Information. 36 7.7 Firmware . 36 Part 3 Reference Chapter 8 Specifications 8.1 Technology. 39 8.2 Performance . 39 8.3 Hardware Interface. 40 8.4 Digital Command and Control Interface. 40 8.5 Power . 41 8.6 Physical . 41 Trillium Compact User Guide v 16889R7 2015-11-02 Contents 8.7 Environmental . 42 Chapter 9 Transfer Function and Noise Floor 9.1 Frequency Response for 120 s and 20 s Models . 43 9.2 Self-Noise for 120 s Models . 46 9.3 Self-Noise for 20 s Models . 47 Chapter 10 Connector and Cables 10.1 Pinout for 14-Pin Trillium Compact Connector . 48 10.2 Pinout for 16-Pin Trillium Compact Connector . 49 10.3 Cable Design Guidelines . 50 Chapter 11 Physical Features and Dimensions 11.1 Top Views . 51 11.1.1 Top View of Models TC120-SV1 and TC20-SV1 . 51 11.1.2 Top View of Models TC120-PH2 and TC20-PH2 . ..