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Important Hardware/Software Notes for Researchers Using PASSCAL Equipment

This page includes important Hardware/Software Notes for Researchers Using PASSCAL Equipment. January 17, 2019: GPS Rollover

Late 2018 PASSCAL learned of a GPS week rollover event that can affect data logger performance and timing. PASSCAL has acquired a GNSS signal generator that can emulate GPS satellite signals. This satellite emulator allows us to test PASSCAL equipment that relies on GPS timing and to determine how equipment will handle the GPS rollover event. To date, we have determined that some models of GPS engines are affected by the rollover. How the rollover errors manifest is dependent on the data logger’s model and firmware version of the GPS engine.

PASSOFT Software Installation Updated

 New installation scripts for the PASSOFT software suite have been developed by the software group, and are now available for public download on this page. The PASSOFT suite includes open-source software for downloading seismic data from data recorders, for quality assessment, and for conversion to other data formats for analysis and archiving at the IRIS Data Management Center.

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PQL II - Program for Viewing Data

April 21, 2009

 

PQL II is a program for viewing time-series data in any of four formats: MSEED, SEGY,  SAC, or AH (though, to be honest, PASSCAL staff has not used the AH option). It is the second generation PQL, hence the name PQL II. Both generations of code were written by Richard Boaz and PASSCAL staff supports the code on MAC OS X, LINUX, and Solaris platforms.To install PQL II on your system, you need to go the PASSCAL download page, or directly to PQL II download on PASSCAL's FTP area.

The HELP menus for PQL II are actually helpful. Use them a lot till you get to know the program.

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Software Resources

PASSCAL PASSOFT Software

PASSCAL provides open-source software for downloading seismic data from data recorders, for quality assessment, and for conversion to other data formats for analysis and archiving at the IRIS Data Management Center.

The preferred method of bug reporting is to use the issue feature found at https://git.passcal.nmt.edu/passoft. Navigate to the project for the application you are having an issue with and use the issue link to report an issue. A template will be provided on the issue page.

Installation Instructions

The first step to getting PASSOFT installed on your system is to download the correct installer script for Mac OSX or Linux from the links below. 

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