Release Notes for DIG

DIG is Guralp Systems’ firmware for Minimus digitisers.

Finding the currently installed version
Upgrade instructions
Important notices
Change log

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

Upgrade instructions

Instructions for upgrading Minimus digitisers can be found in Section 5.14 of the Minimus manual: MAN-MIN-0001.

Important notices

Limitations and known issues of SeedLink implementation in dig v1.0-1263	Details
Backfill of a historical segment of samples is not supported Related: Backfill should always be requested by begin time. If backfill is requested by packet sequence number, then dig v1.0-1263 will just assume that 12 minutes of backfill is requested.	Although the SeedLink server of dig v1.0-1263 only supports live streaming of samples, the first sample of every stream can come from (up to) 15 minutes ago. SeedLink clients can ask for live streaming of samples using SeedLink DATA commands with zero, one or two arguments. Backfill should always be requested by begin time. If backfill is requested by packet sequence number, then dig v1.0-1263 will just assume that 12 minutes of backfill is requested. SeedLink clients can also ask for live streaming of samples using SeedLink TIME commands with zero or one arguments. These SeedLink TIME commands are accepted. SeedLink clients can ask for a historical segment of samples using SeedLink TIME commands with two arguments. The second argument of these SeedLink TIME commands are ignored, so these SeedLink TIME commands are treated as if they were SeedLink TIME commands with only one argument.
Dial-up mode is not supported	SeedLink FETCH commands are rejected. The SeedLink server of dig v1.0-1263 will only operate in “real-time” mode.
The ‘!’ negation character in stream selectors is not supported	Negative stream selectors are rejected, i.e. only positive stream selectors are accepted.
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).
The seedlink_samples_streamer thread polls for new samples instead of being event-driven	This software pattern was fast to implement but subobtimal, especially with regards to latency.
A SeedLink client can be rejected if it performs the SeedLink handshake in a very unusual order and if the system has more than 60 streams	This issue does not affect SeisGram2K, which performs the SeedLink handshake in the normal order. Also, this issue does not affect a Minimus+Fortis+single-Radian system, because such a system has less than 60 streams.
[BUG] A buffer overflow can occur if the SeedLink client tries to select more than 559 streams	This can only happen when trying to fuzz test (or hack) the SeedLink server of dig v1.0-1263.

Change log

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.

date : 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.

date : 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.

date : 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.

date : 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.

date : 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 button in the Data Flow web page.

date : 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.

date : 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.

For more information, first contact your local distributor or email .