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Related Manuals for Güralp Minimus2
Summary of Contents for Güralp Minimus2
- Page 1 Minimus and Minimus Lite Güralp Minimus Minimus Lite Technical Manual Document Number: MAN-MIN-0002 Issue B 21/03/2025 11:22:29 Designed and manufactured by Güralp Systems Limited 3 Midas House, Calleva Park Aldermaston RG7 8EA England MAN-MIN-0002...
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Page 2: Table Of Contents
Manuals and Software .................... 6 Conventions ......................6 System Overview ....................7 Key features......................7 Typical applications ....................7 System description ..................... 8 Güralp Minimus2 digitiser ..................8 2.1.1 LED indicator ....................8 2.1.2 Bluetooth connectivity ..................8 2.1.3 Data storage ..................... 9 2.1.4... - Page 3 2.20.5 Seismic Event Table ..................51 2.21 Using a Registry ....................52 2.21.1 Configuring a Minimus2 for use with a registry ..........52 2.21.2 Configuring Discovery for use with a registry ..........53 2.21.3 Registry mode: using WAN or LAN addresses ..........54 2.22 Updating Minimus2 Firmware ................
- Page 4 Minimus and Minimus Lite 2.23 Import / Export an existing configuration ............... 56 2.24 Scripting ........................ 56 2.24.1 Enabling Scripting Capability ................56 2.24.2 Preparing the Script File ................. 57 2.24.3 Sending a Script File ..................60 2.24.4 Status of the Script Running Process ............. 61 2.25 GüVü...
- Page 5 Minimus and Minimus Lite Update ..............Error! Bookmark not defined. 10 Appendix 6 – IP address configuration on PC or Laptop ... Error! Bookmark not defined. 10.1 On Linux ..............Error! Bookmark not defined. 10.2 On Windows ............Error! Bookmark not defined. 10.3 EU Declaration of Conformity ................
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Page 6: Preliminary Notes
Minimus and Minimus Lite Preliminary Notes Proprietary Notice The information in this document is proprietary to Güralp Systems Limited and may be copied or distributed for educational and academic purposes but may not be used commercially without permission. Whilst every effort is made to ensure the accuracy, completeness and usefulness of the information in the document, neither Güralp Systems Limited nor any employee assumes responsibility or is liable for any incidental or consequential damages resulting from the use of this document. -
Page 7: System Overview
System Overview Thank-you for purchasing a Güralp Minimus or Minimus Lite digitiser. This section describes the key components of a Minimus system. The Minimus unit is the main, standard product in the system; other components and accessories are optional and can be purchased separately. Please check your order confirmation to see which components were purchased with your system. -
Page 8: System Description
System description Güralp Minimus digitiser The Güralp Minimus is a combined digitiser and advanced communications unit. The Minimus acquires data from – and allows direct control (where appropriate) of – e.g. connected analogue instruments ( Güralp Fortis, 3-series, 5-series, 40T and 6T e.g. -
Page 9: Data Storage
minimise the power requirement. The Bluetooth transmitter/receiver is in permanent standby mode and always ready to receive a connection from a phone or tablet. See Chapter 2.23.4 for further details on connecting to the Minimus and its attached sensors using a phone or tablet. 2.1.3 Data storage The Minimus uses microSD (non-volatile) memory technology to store seismic data... -
Page 10: Web Interface
Minimus2 has had its card-holder removed, do not leave it exposed to the elements. If a card-holder is to be transported when it is not installed in a Minimus2, enclose it in a protective bag or covering so that it cannot be scratched or contaminated. -
Page 11: Accessory Package
Local data-storage configuration • Accessory package 2.2.1 Ethernet cable The Ethernet connector allows use of 10BASE-T, 100BASE-T networks. The cable that connects to the Minimus has a metal cover which is IP68-rated and ensures consistent connections in harsh installation environments. At the other end of the blue Ethernet cable, there is a standard 8P8C modular jack (often incorrectly called an e.g. -
Page 12: Diagnostic Gnss To Serial Cable Adapter
2.2.4 Diagnostic GNSS to Serial cable adapter The Minimus comes with an adapter to connect the GNSS LEMO connector to a female nine-pin D-subminiature connector (DE9f), which can be used with a standard serial port to allow diagnosis and debugging of the using a serial terminal emulator (see section 3 ). -
Page 13: Güralp Discovery Software
State-of-Health (SoH), data streaming; GNSS location; response and calibration data. Discovery can download Minimus2 firmware from the Internet and remotely install it onto any connected digitisers. Running Discovery on a network connected PC will show any connected Güralp... -
Page 14: Güralp Güvü Android App
Güralp GüVü Android app For added confidence during deployments in the field, Güralp GüVü, a Bluetooth App, displays waveforms, orientation, temperature and humidity data for instant checking of installation integrity. Please refer to Chapter 2.23 for installation and usage instructions. Its available on PlayStore. -
Page 15: Getting Started
Getting started 2.5.1 System set-up Güralp highly recommends exploring and gaining familiarity with the inside your lab before installation in an outdoors environment. Power up the using a power supply with a DC output of between 10 and 36 Volts. We recommend fitting an in-line 3.5 A anti-surge fuse in the positive power lead to protect the external wiring of the installation. -
Page 16: Viewing Waveforms And System State-Of-Health
Any device on the same subnet will be displayed. The protocol uses a ‘broadcast’ UDP packet to request a response from connected systems. This will likely not penetrate routers, firewalls etc unless expressly permitted. However, any device on a local ethernet hub or switch should respond. This allows connection without using or typing specific IP addresses. - Page 17 GDI only • GCF only • The GCF option uses the Scream! Protocol to stream data in GCF packets of, typically, 250, 500 or 1,000 samples. The GDI protocol streams data sample-by-sample and also allows the sending of each instrument's calibration parameters so that data can be expressed in terms of physical units rather than digitiser counts.
- Page 18 analysis on the data, including plotting power spectral density graphs (PSDs), spectrograms and discrete Fourier transforms (DFTs), as shown below: You can change the display of the waveforms with based on a combination of keystrokes and mouse-wheel scrolling (or track- / touch-pad scrolling on a laptop). These commands are shown in the table below: Command Window control...
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Page 19: Using Scream
subscription list”. In subscription list mode, the channels in the list on the left-hand side are those to which Discovery subscribes. All available channels are listed on the right-hand side. i.e. Channels can be moved between lists – switched between being subscribed and being unsubscribed –... - Page 20 To configure the Minimus , double-click on its entry to open its web page. MAN-MIN-0002...
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Page 21: Web Page Login
System configuration System configuration, control and configuration tools are available by selecting an instrument in Discovery, right-clicking its entry and selecting “View Web Page”. Alternatively, the web interface can be viewed by navigating to the LAN or WAN address of the instrument from any common web browser. Some changes in config. -
Page 22: Data Streams
Host Label can be set in the Setup page. This is also visible on the Discovery front page. The map requires access to the internet to display correctly. The computer used to view the Minimus must therefore be internet connected. The MicroSD Used item acts as a verification that the system is truly recording data. -
Page 23: Station Meta-Data
calibration sampling rate is 4000 Hz, it would be recommended to reduce this in the case of a low bandwidth connection. This channel is not always enabled so if it doesn’t appear within the ‘Data Stream’ tab, select ‘All’ under ‘Display Streams’ and it will appear. -
Page 24: Ntp (Network Timing Protocol) Configuration
Network settings are also available in Discovery by right-clicking on the entry in Discovery's main window and selecting “Edit Network Address”. NTP (Network Timing Protocol) configuration 2.10.2 This gives the system time to within 1 second. It is not generally recommended that this is used as the main time source for deployments. -
Page 25: Data Storage
When auto-connection from a Minimus to a host is configured, the Minimus will attempt to open a connection to the host. If it fails, it will re-try every 60 seconds. A suitably configured host will accept the connection and the Minimus will then negotiate a link and start streaming data. -
Page 26: Storage
button. The same configuration can be applied to real-time transmission channels by clicking the button. The default channel configuration can be applied by clicking the button. In third column from left, Location and Channel SEED codes can be • configured. Cells are greyed out by default (default values applied) and they can be edited by clicking on the check-box;... -
Page 27: Quick Format
Whether a card is inserted; • i.e. Whether an inserted card is usable ( correctly formatted); and • Whether the card is recording data. • Note: If the recording status of the cards is marked NOT RECORDING, clicking on the Quick Format button may solve the issue. Note that the quick format simply moves the write-pointer to the beginning of the recording space, hence overwriting any existing data. -
Page 28: Downloading Recorded Data
Downloading recorded data 2.13.3 The “Storage” tab of the web browser interface displays the miniSEED files stored on the microSD card: Clicking on the file from the list automatically starts a download using your browser's standard mechanism: Multiple files can be downloaded simultaneously by ticking the boxes on the left of each link and clicking on button. -
Page 29: Bulk Data Extraction
… then select the start and end dates and times using the pop-up calendars: Lastly, click the download button to initiate a file transfer using your browser's standard mechanism. Bulk data extraction 2.13.5 To view files saved on the external microSD card, remove the card, as described in Section 2.1.3.1. - Page 30 The root directory of the disk contains seven items: a file named init.log. This “write-once” file contains the first 32 MiB of • system log information since the card was last formatted. a file named system.log. This “re-use” file contains the last 64 MiB of the •...
- Page 31 The typical contents of the all_miniSEED_files_are_in_here directory looks like this: The file-name consists of four components: The stream name, truncated to 16 characters - see Section 4 for a full list of • these; The sample rate (in samples per second) as a ten-digit decimal number, left- •...
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Page 32: Time Based Download Via Network
Time based download via Network 2.13.7 The example Python script below will extract seismic data from the SD card based on a specified time interval. This is similar to the FDSN (International Federation of Digital Seismograph Networks) data archive retrieval service: https://www.fdsn.org/webservices/fdsnws-dataselect-1.1.pdf. -
Page 33: Request Data From Microsd Card Via Network
#! /bin/bash # Invoke with one argument: the IP address. For example ./script_name 192.168.254.101 set -x # enter your network details net_code=DG station_code=04D67 location_code=0L #enter the sensor codes for the location targeted, found on the Data Stream tab of discovery, the last 3 characters/values of the SEED name (HNZ) sensor_code1=HNZ sensor_code2=HNN... -
Page 34: Data Transmission
extracts all files from the SD Card into a directory named after the date and the network address of the Minimus #!/bin/bash # Invoke with one argument: the network # address of the Minimus set -x if [ "$#" -ne 1 ] ; then echo "Usage: $(basename $0) network_address" exit 1 fi NET_ADDRESS=$1 DATE=$(date --iso-8601) SAVEDIR = ${DATE}_${NET_ADDRESS} echo Saving to $SAVEDIR mkdir $SAVEDIR cd $SAVEDIR wget -rnp http://$NET_ADDRESS/tab9.html... -
Page 35: Scream! (Gcf Format + Scream Protocol)
channels by clicking the button. Default channel configuration can be applied by clicking the button. In third column from left, Location and Channel SEED codes can be • configured. Cells are greyed out by default (default values applied) and they can be edited by clicking on the check-box;... -
Page 36: Seedlink Protocol
Güralp NAM (Network Acquisition Module) • Earthworm software (www.isti.com/products/earthworm/) • GDI-link supports both data push and pull from/to the Minimus . See Section 2.11 to e.g. configure data push to one or more remote clients, NAM. GDI-link provides a highly efficient, low latency method of exchanging data via TCP between seismic stations and data centres. - Page 37 In the “Network” tab of the web page, select the interval in deciseconds (1 decisecond = 100 ms or 0.1 seconds) between miniSEED packets (“Send SeedLink EEW Packets Every”). The modified SeedLink protocol also allows the use of 256-byte records as an alternative to the standard 512-byte format.
- Page 38 To print miniSEED data records of a single channel, you will need the following command: slinktool -p -S DG_TEST:00HNZ.D IP-Address Which produces the following output: DG_TEST_00_HNZ, 412 samples, 100 Hz, 2016,257,10:43:42.000000 (latency ~2.9 sec) DG_TEST_00_HNZ, 415 samples, 100 Hz, 2016,257,10:43:46.120000 (latency ~2.6 sec) DG_TEST_00_HNZ, 416 samples, 100 Hz, 2016,257,10:43:50.270000 (latency ~3.0 sec)
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Page 39: Synchronisation Of The Sample-Clock
To use the tool, select "miniSEED Extractor" from the Edit menu. Click the first button to select which files you wish to process and then the second button to select the folder into which you wish the output files to be written. Finally, click the button to extract the valid data from the selected files into new files in the selected destination folder. -
Page 40: Ptp (Precision Time Protocol)
0% = no receiver connected; ◦ 1% = receiver connected, but waking up (this can occur if the GNSS receiver ◦ has been moved a long distance since last power-up). 2-99% = view of sky obstructed. ◦ 100% = normal operation with clear view of sky ◦... -
Page 41: Setting Digitiser Gain
Setting digitiser gain 2.16.3 The input gain can be controlled from the "Setup" tab of the web page using the “Input Gain” drop-down box. Digitiser gain options available are: Unity, ×2, ×4, ×8 and ×12. The input range and resolution change automatically when the gain is selected and the gain in the RESP files and Dataless SEED is updated automatically. -
Page 42: Instrument Response Parameters
Mass locking 2.16.4.2 Some seismometers require their masses to be locked for transportation. Mass locking can be controlled from the "Setup" tab of the web page using the buttons. Change the polarity of the control signals using the drop- down menu, if necessary. Note: The mass lock control buttons are not displayed unless the selected sensor type has a mass-locking mechanism. - Page 43 This form has one tab for each seismic component, for the mass positions and calibration channel. The instrument's response values should be entered in the here. These are: The Digitiser Volts per Count (VPC) – the ratio between the input voltage and •...
- Page 44 with the instrument. In the calibration document, this parameter is often referred to as “Velocity Output V/m/s” or “Acceleration Response V/m/s ” depending on the analogue instrument. This value can vary slightly across the three components. The ADC offset is the quiescent output seen when digitiser input is zero. This •...
- Page 45 The overall system calibration parameters can be exported and saved in a file for future use by clicking on the button under “System calibration values”. The resulting file-name will have the extension.conf. Values from an existing calibration file can be imported using the button.
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Page 46: Configuration And Control Of Connected Digital Instruments
To save a RESP file, right click on it in the main list and select "Save Link": Configuration and control of connected digital 2.17 instruments Minimus supports the Güralp Certis instrument. This can be connected either as a Digital instrument or a traditional Analogue device. The same cable is used in either case. -
Page 47: Earthquake Early Warning
nVELC0 nACCC0 Note: The calibration channel, named ), produces an output if and only if the calibration is in progress. While the calibration is in progress, the webpage shows the warning message and Discovery flags the status icon in yellow. Earthquake Early Warning 2.18 The “Trigger”... -
Page 48: Eew Configuration
The STA/LTA algorithm continuously calculates the average values of the absolute amplitude of a seismic signal in two simultaneous moving-time windows. The short- time-average (STA) is sensitive to seismic events while the long-time-average (LTA) provides information about the current amplitude of seismic background noise at the site. - Page 49 The CAP receiver window allows specification of the listening port. Each digitiser from which messages should be received must have this value specified as the “CAP Port” in its triggering settings. The value should be between 1025 and 65535. You should avoid numbers in the list at https://en.wikipedia.org/wiki/List_of_TCP_and_UDP_port_numbers.
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Page 50: Sta/Lta Streams
location, along with the time, the recipients and the threshold value which was exceeded. If the EEW parameters are enabled in a particular source, after the first CAP message containing the event information, three other messages with the PGA/PGV/PGD details are sent, one for each component. Click on the button to clear markers from the map and descriptions from the right-hand-side list. -
Page 51: Seismic Event Table
Seismic Event Table 2.18.5 The Minimus can generate a “Seismic Event Table”. This is list of events detected by the STA/LTA or threshold trigger enabled on taps. It contains information about the time when the event occurred, its duration, the channel that generated the trigger and the peak magnitude of the event. -
Page 52: Using A Registry
3. Set the Registry server address and Group ID in each Minimus 4. Set the Registry server address and Group ID in each instance of Discovery. Configuring a Minimus2 for use with a registry 2.19.1 The address of the registry server and the chosen Group ID must be set individually for each participating digitiser. -
Page 53: Configuring Discovery For Use With A Registry
In the resulting web page, select the “Network” tab. The Registry parameters can be found near the bottom of the resulting screen: These are: Registry Update: the frequency at which the registry is updated with details of • this digitiser can be specified here, using the drop-down menu; Group ID: the chosen Group Identifier should be entered here;... -
Page 54: Registry Mode: Using Wan Or Lan Addresses
2. Type the chosen Group ID in the “Cloud registry group identifier” field and click Return to the main windows and test the configuration by clicking the button. All digitisers using the same Registry server and Group ID should appear in the main list. Registry mode: using WAN or LAN addresses 2.19.3 When Discovery displays a list of devices found from a local scan, all access to those... -
Page 55: Updating Minimus2 Firmware
Updating Minimus2 Firmware 2.20 The firmware of the Minimus is upgradeable. New releases appear regularly – mostly to add new features but, occasionally, to fix problems. Güralp recommends that the Minimus is regularly checked for availability of firmware updates and, when convenient, these updates should be installed. -
Page 56: Import / Export An Existing Configuration
Import / Export an existing configuration 2.21 Updating the firmware can, occasionally, cause loss of configuration. We recommend that you export and save the current configuration before proceeding with an upgrade. This operation can be done through Discovery by right-clicking on the digitiser in the list and selecting “System Configuration”... -
Page 57: Preparing The Script File
Preparing the Script File 2.22.2 Typing “help” in the console shows all the possible commands along with a brief explanation. Any commands available on the digitiser console can be used. The list of commands to be executed on specific dates and time has to be written to a text file with the following format: 2024-06-17T18:30:33Z example command 1... - Page 58 For Minimus+, where more than one sensors are available, specify on which sensor the “n:” command has to be executed by adding in front of the variable to change. For example, to enable white noise calibration signal generator on Sensor0 the command would be: var set “0:Calibration”...
- Page 59 2023-04-17T03:28:00Z var set "0:Calibration" 4 2023-04-17T03:28:20Z var set "0:Lookup generator gain" 0 2023-04-17T03:28:40Z var set "0:Channel" 5 2023-04-17T03:30:00Z var set "0:Lookup generator gain" 1106247680 2023-04-17T03:41:00Z var set "0:Lookup generator gain" 0 2023-04-17T03:47:00Z var set "0:Channel" 0 2023-04-17T03:47:20Z var set "0:Calibration" 0 Explanation: “0:Calibration"...
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Page 60: Sending A Script File
Sending a Script File 2.22.3 Once the text file with the list of commands is ready, it has to be uploaded in Discovery as a file transfer. To do this, right-click on the Minimus entry and select “File Exchange”. From the “File Upload” box, browse for the text file previously prepared and in the field “Upload as”... -
Page 61: Status Of The Script Running Process
Status of the Script Running Process 2.22.4 To see the status of the process, type in the console: futrcmds show Keeping in mind that the date and time refer to the system time. To visualise the system time, type in the console: system time To remove the script and cancel queued up commands, type in the console:... -
Page 62: Güvü App
GüVü app 2.23 The GüVü app provides monitoring and control of near-by digitisers using the Bluetooth protocol. It is available for Android devices. GüVü can be downloaded from the Google Play store at: https://play.google.com/store/apps/details?id=com.guralp.whisper Getting started 2.23.1 Steps for launching the GüVü App: Launch by clicking on the GüVü... -
Page 63: View Settings
The data source selection screen shows a list of connected instruments. Select an instrument name: this is now the instrument that will be displayed on the main instrument status window. View settings 2.23.3 The user can customise the view of the main instrument status window. Four different view options can be cycled through by tapping the menu icon ( ) on the main instrument status window:... -
Page 64: Setting The Pin Code
Setting the PIN code 2.23.4.1 The PIN code for accessing the instrument control menu of GüVü can be changed from the "Setup" tab of the web page. The new four-digit PIN code should be entered into the "Bluetooth PIN" field. The new value is applied by keying ;... -
Page 65: Using Guralp's Power Pack Module
Using Güralp’s Power Pack Module 2.24 The PPM offers a battery charge controller that communicated with the digitiser via a serial port. This allows the digitiser to record battery capacity, voltage, current, temperature etc. This information can be viewed as a data stream much like a seismic channel. -
Page 66: Advanced Troubleshooting
Advanced troubleshooting In the unlikely event of the user experiencing problems with the operation of the Minimus , a diagnostics tool is available via the GNSS connector. This connector provides a serial console which can be accessed using a terminal emulator. The user should first plug in the serial adapter to the GNSS connector, which is then attached to a 9-pin COM port on your PC/laptop (if a 9-pin COM port is not available, a serial-to-USB converter should be used instead and connected to an available USB... -
Page 67: Reset All Settings During Boot Phase
Finally click the button and a terminal window will open, connected to the console of the Minimus In the event of any operational issues, the Güralp Support Team may request you to interact with the console in order to diagnose and fix problems. Reset all settings during boot phase The Minimus can be reset to its factory settings during its boot-up stage. -
Page 68: Appendix 1 - Instrument/Channel Names
Appendix 1 – Instrument/channel names The tables in this section show the names and codes of the streamed channels along with the record names and channel codes for recorded data. The first character “x” in miniSEED channel code represents the sample rate. The possible values are shown in the table below: ≥... -
Page 69: Appendix 2 - Digital Interconnectivity And Devices
Appendix 2 - Digital interconnectivity and devices The Minimus has a serial port on the Analogue connector. This can be used for several different protocols depending on what instrument is in use. The protocols can be selected permanently by added a resource variable to the system. -
Page 70: Appendix 3 - Network Ports
Appendix 3 – Network Ports The following network ports are used by the Minimus Port Layer 4 Protocol Description HTTP server 1565 GDI transmission protocol 1567 TCP/UDP GCF transmission protocol 4242 File exchange protocol 4244 Remote console 11788 Remote procedure calls 18000 SEEDlink transmission protocol MAN-MIN-0002... -
Page 71: Appendix 4 - Connector Pin-Outs
Appendix 4 – Connector pin-outs Ethernet The Ethernet connector allows the use of 10BASE-T, 100BASE-T or 1000BASE-T transmission over networks. The metal gland shell-type connector that connects to the device is IP68-rated and ensures consistent connection in harsh installation environments. At the other end of the Ethernet cable, there is a standard 8P8C modular jack (often called an RJ45) for attachment to all common networking devices (including: PC, laptop, router, switch, and modem). -
Page 72: Power
When used in hostile environments, a standard Ethernet cable can have a mating environmental shield (Amphenol part number RJF6MN) fitted. Power Every device comes with a dedicated power cable with a standard military-specification bayonet connector on one end and bare ends at the other. 7.2.1 Pin-Outs This is a standard 4-pin military-specification bayonet plug, conforming to MIL-DTL-26482... -
Page 73: Gnss/Serial
GNSS/serial This is a 14-pin LEMO EEG.1K socket. Suitable mating connectors can be found in the LEMO FGG.1K.314 range. To engage the mating connector, line up the • red marks and push firmly until you hear a click. To disengage, hold the mating connector by •... -
Page 74: Digital
Digital Port This is a standard 10-pin military-specification bayonet sockets, conforming to MIL-DTL-26482 (formerly MIL-C-26482). Function Ground Power RS422 serial transmit – positive RS422 serial transmit – negative RS422 serial receive – negative not connected not connected not connected not connected RS422 serial receive –... - Page 75 Vertical Acceleration/Velocity – Calibration signal (all channels) differential non-inverting input Vertical Acceleration/Velocity – Calibration enable – vertical differential inverting input channel N/S Acceleration/Velocity – Calibration enable – N/S channel differential non-inverting input N/S Acceleration/Velocity – Calibration enable – E/W channel differential inverting input E/W Acceleration/Velocity –...
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Page 76: Eu Declaration Of Conformity
EU Declaration of Conformity Guralp Systems Ltd Midas House, Calleva Park, Aldermaston READING, RG7 8EA. Tel: +44 118 981 9056 E-mail: technical@guralp.com Declare under our sole responsibility that the following product Equipment name: Minimus with GPS Model Number: MIN2-0001 and appropriate variants Is in conformity with the Radio Equipment Directive 2014/53/EU Electromagnetic Compatibility Directive 2014/30/EU... - Page 77 <#> Revision History MAN-MIN-0002...
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