Release Notes for DIG

DIG is Guralp Systems’ firmware for Minimus digitisers.

Finding the currently installed version

To determine the current firmware, run Güralp's free Discovery software and find the entry for your digitiser on the main page. The firmware version is displayed, as highlighted below:

Firmware version as shown on Discovery main screen

If the firmware version is not displayed, select "Firmware Ver" from the "Show" sub-menu of the "View" menu:

Enable firmware version display

Upgrade instructions

Instructions for upgrading Minimus digitisers can be found in Section 5.15 of the Minimus manual: MAN-MIN-0001.

Important notices

Limitations and known issues
of the SEEDlink server in dig v1.2
Backfill of a historical segment of samples is not supported - i.e. the SEEDLink server in dig v1.2 only supports live streaming of samples In addition to SEEDLink DATA commands, SEEDLink clients can ask for live streaming of samples using SEEDLink TIME commands with zero or one arguments.

However, because SEEDLink TIME commands with two arguments are used to ask for a historical segment of samples, the second argument of these SEEDLink TIME commands are always ignored by the SEEDLink server in dig v1.2. In other words, SEEDLink TIME commands with two arguments are always treated as if they were SEEDLink TIME commands with only one argument.
Dial-up mode is not supported. SeedLink FETCH commands are always rejected. The SeedLink server of dig v1.2 will only operate in “real-time” mode.
The ‘!’ negation character in stream selectors is not supported. Negative stream selectors are always rejected. The SEEDLink server in dig v1.2 only accepts positive stream selectors.
Leap seconds are not supported.
SeedLink handshaking in uni-station mode is not supported. IRIS states that “almost all connections are negotiated as multi-station, even if only a single station is requested; uni-station mode, for most publicly accessible servers is deprecated.” (Iris SeedLink Overview).
Latency problems. The seedlink_samples_streamer thread polls for new samples instead of being event-driven. This software pattern is subobtimal, especially with regards to latency, but it was much quicker to implement as an initial version.

Change log

2018-04-24 : release 1.2-8572
This version has two urgent bug-fixes:
  • A problem affecting calibration values for Radian instruments has been fixed. Installing this firmware is essential for the correct operation of the calibratiopn page editor in Discovery.
  • A problem causing incorrect notifications about station moves has been fixed.
2018-04-12 : release 1.2-8566
This version has two urgent bug-fixes:
  • A problem which resulted in no data for channel *Z0 has been fixed.
  • GDI streams now have correct channel units metadata.
2018-04-09 : release 1.2-8565
This version has ten notable changes:
  • Data Transforms have been introduced (including PGA/PGV/PGD calculation).
  • The LED behaviour has changed: Rapid white blink (bootloader stage) ⇒ Solid white (OS initialisation) ⇒ Status mode (operational).
  • Auxiliary files are now available on the "storage" webpage.
  • Errors in DatalessSEED and RESP files have been corrected.
  • SEED metadata is now generated only for seismic channels.
  • A progress bar has been added for the "full-format" function for SD cards.
  • A problem which caused corruption in SD files when multiple downloads were performed in the same time has been fixed.
  • Download speeds for SD card files have been enhanced.
  • HTTP ranges are now accepted for SD card files download.
  • The status log has been renamed from system.log to status.log
2017-10-26 : release 1.1-1022
This version has five notable changes:
  • PTP support added.
  • Time validation enhancements.
  • Seedlink backfill handling improved - including configurable backfill buffer size.
  • Internal data transfer procedure enhanced.
  • System performance and stability improvements.
2017-08-24 : release 1.0-1271
Five notable changes from dig v1.0-1263 to dig v1.0-1271:
  • Minimus crash during remote console operations fixed.
  • Several dataless SEED values corrected.
  • Responder protocol extended by additional system state of health information.
  • Manual relay control added to the "setup" webpage.
  • Extra power saving when Minimus operates in "power save" mode.
2017-08-07 : release 1.0-1263
Five notable changes from dig v1.0-1261 to dig v1.0-1263:
  • Fixed a bug where streams received in SCREAM! can get behind in (or ahead of) time by 80ms.
  • SeedLink backfill requests based on packet sequence number are no longer rejected. However, please refer to the list of known limitations under Important notices to see what happens when backfill is requested by packet sequence number.
  • SeedLink backfill time increased to cover 15 minutes.
  • Usable RAM size increased to 220MB for better system stability.
  • System image file pre-allocation added to prevent Minimus crashing during system update (after a long run).
2017-07-25 : release 1.0-1261
Seven notable changes from dig v0.80-22446 to dig v1.0-1261:
  • Bluetooth module application update (v0.1.0), and Bluetooth reliability improved.
  • SD card logging.
  • Triggering functionality extended.
  • Every Minimus can now control (via the RS-232 signals of its Analogue connector) up to five ASE-OBS-x043 power supply boards, or one 8-channel I/O expander module.
  • Many other improvements in system stability.
  • Users can now execute the FPGA firmware update process via the “Setup” web page.
  • Secondary Data Record taps are now available for a few decimation chains.
2017-05-02 : release 0.80-22446
One notable change from dig v0.80-22445 to dig v0.80-22446:
  • Normal response for Radian sensors defaulted to 80 seconds, and FPGA integrator rescaled.
2017-04-27 : release 0.80-22445
Five notable changes from dig v0.80-21461 to dig v0.80-22445:
  • MiniSEED files on microSD cards can now be downloaded from the new Storage web page.
  • The fourth analogue sensor input – the X channel – is now visible.
  • New feature – GDI auto-connections to remote hosts.
  • The new “fastspi” datalink protocol has been implemented and is enabled by default – FPGA firmware version 3.11 or newer must be used with this dig release.
  • The built-in copy of the FPGA firmware file has been upgraded to v3.11.
2017-03-17 : release 0.80-21461
Eight notable changes from dig v0.80-18652 to dig v0.80-21461:
  • More stable and robust Bluetooth connections – GüVü version 1.3 or older might fail to communicate with this dig release, because the Bluetooth protocol has changed.
  • Feature: “temperature training”.
  • Feature: “power save”.
  • The U-Boot bootloader associated with this dig release has been updated to v2017.03-1, to fix the intermittent Ethernet TX timeout failures.
  • More stable and robust GDI connections.
  • Stability and speed improvements to “System Update”.
  • Send and receive timeouts for sockets now work – lightweight IP in dig has been updated to v2.0.1.
  • Very many other bugs have been fixed.
2017-01-16 : release 0.80-18652
One notable change from dig v0.80-18650 to dig v0.80-18652:
  • The U-Boot bootloader associated with this dig release has been updated to v2017.01-1, to fix the intermittent initialization failures of external microSD cards.
2017-01-09 : release 0.80-18651
One notable change from dig v0.80-18650 to dig v0.80-18651:
  • A bug with calvals.txt link not working was fixed.
2016-12-09 : release 0.80-18650
Three notable changes from dig v0.80-18500 to dig v0.80-18650:
  • Low-latency filter coefficients improved.
  • A few typos, wording inconsistencies and formatting inconsistencies have been fixed in RESP files.
  • The network code in the dataless SEED file is no longer hardcoded to GU.
2016-11-28 : release 0.80-18500
One notable change from dig v0.80-18480 to dig v0.80-18500:
  • Prevent dig from crashing whenever users click on the Disable All Streams button in the Data Flow web page.
2016-11-25? : release 0.80-18480
One notable change from dig v0.80-18409 to dig v0.80-18480:
  • The built-in copy of the FPGA firmware file has been downgraded from v2.10 to v2.1, because FPGAs running firmware v2.10 do not lock/sync their main clock correctly.
2016-11-21 : release 0.80.18409
With dig v0.80-18409:
  • Minimuses should no longer encounter the “stuck at RomBOOT” issue.
  • The Minimus’ status.txt file is now sent to Seedlink clients every 5 minutes by default, via the new SeedLink SOH channel.
  • SEED locations are now configurable, as requested by OGS.
2016-07-22 : release 0.80-13366
First public release.

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