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| # | Post Title | Result Info | Date | User | Forum |
| What geophones should I use in a refraction survey? | 6 Relevance | 2 years ago | Gretchen Schmauder | Application | |
| 10-14 Hz are the most common and the least expensive. Much more than 20-30 Hz and you start Cutting into your signal. Less than 10 Hz and the phones become a somewhat fragile and less field-robust. | |||||
| Internal QA/QC Performance Testing for the Geode Seismograph | 5 Relevance | 2 years ago | Gretchen Schmauder | Hardware | |
| Geodes do have an option to have a factory installed oscillator board at extra cost that is used to test the electronics in the Geode. These are not normally installed for most of our users. Users do have the option to run geophone tests using the standard equipped Geode Seismograph that can run line continuity and geophone tests. This can be accessed from the system->tests->Run Geophone/Line tests. Oscillator boards are typically installed during purchase. Fewer than 5% of the customers purchase that option, that level of QC is typically not necessary. For more information please read the test box Manual. We no longer supply the Test Box to external customers. A description of how to run the tests if you use the test box or if you use the internal oscillators is described in Section 2.11.3.1 RUN INSTRUMENT TESTS (OPTIONAL ADD-ON FEATURE) of the Manual. The latest standard Geode Operations Manual has more information. You can run the tests outlined in the Geode Operations Manual to detect the bad geophones and spread cables. If you require a calibration certificate for your Geode please consult our Support Note. All Geophysical surveys require interpretation given limited understanding of the site, data from equipment, and ground truthing. Any interpretation provided is the best that can be provided according to the geophysical expertise and experience of the geophysicist. | |||||
| Channel remapping in SGOS | 4 Relevance | 2 years ago | Gretchen Schmauder | Software | |
| Channel Remapping Channel remapping allows you to change: the order of channels on each analog spread cable that connects to the Geode reorder the Geode boxes. You would use this option if your cables were wired opposite to the default order normally used in Geometrics wiring, if you wished to turn your line around to have the low channels at the opposite end, or if your cables had a wiring error. Channel remapping is also often necessary when using more that a single network cable. Default cable wiring of Geometrics seismographs Default order is defined as the natural electrical order in which channels are oriented when the system first powers up before remapping. Refer to Section 3 under Connector Wiring that discusses standard wiring configurations. You may have requested a custom wiring configuration from Geometrics. If you are confused about your wiring, contact the factory and refer to the serial number and job number. Geode cables are typically wired in a ‘high-side configuration’, meaning that the Geode connects closest to the highest numbered channel on the analog cable. The 149 figure above shows this configuration for a single box system, with 24 channels. Multiple Geodes The following diagram shows a default single digital line (one network card) system with 3 Geodes. Note that Geode one is always closest to the controller in a default configuration. Multiple Network Lines The next diagram below shows a default configuration with two digital lines (two network cards) with the controller positioned in the middle. Line 1 is on the left and line 2 is on the right. One might use two lines to increase data throughput to reduce time between shots. Like the configuration above, the Geodes are numbered starting closest to the controller. The seismic controller software labels all of the channels contiguously even though they are on two separate digital lines. However, if the lines are collinear, the first line will have the channels ordered backwards. This can be easily rectified with the remapping feature. There are two ways of remapping channels: automatic mode and Manual mode. Automatic mode settings are listed on the top of the remapping dialog box, and Manual mode on the bottom. Automatic Channel Remapping Automatic channel remapping allows you to reverse either the order of the Geodes on the line, or reverse the order of the channels on the spread cable. The above diagram shows the result after both channels and Geodes have been reversed, renumbering the line so that low channels start on the left hand side and increase towards the right. In the dialog box, the automatic remapping boxes referencing line 2 remain unchecked, since the default orientation on line two was correct. Manual Channel Remapping Channels can be remapped on an individual basis using the Manual Map Mode. Select the appropriate check box, and enter the order in which you would like the channels that differs from the default order. You can specify individual channels separated by a comma (1, 3, 4, 6 etc) or a range of channels (1-13, 24-14 etc). For example, if you wanted the channels ordered backwards on a 24-channel system, you would enter 24-1. If you wished to reverse the order of channels 1- 12 in a 24 channel system, you would type 12-1, 13-24. Other examples are shown opposite, and are available by pressing the See Examples button on the remapping menu. | |||||
| RE: Geometrics preliminary MagArrow and MagEx data processing program download | 2 Relevance | 1 year ago | Ahmed Ramadan | Software | |
| Hello Dear Rui, I have questions regarding MagArrow Magnetic data compensation, if you can answer please, 1- Does the heading error compensation that applied by surveying data processing program remove the heading effect due to direction only or calibrates the maneuver effect due to the swinging of the sensor as well? 2- Regarding the heading compensation flight, I am confused about the best way to do this. In the Manual, it is mentioned that we can apply a cloverleaf pattern (this is usually used in airborne survey) or a survey pattern or we can do a 360 degree turn at a certain point. However, it is written that we can use the calibration data measured in the turn, can I use the data from the turn to apply the heading error correction separately for each flight instead of doing a heading flight. Regarding the cloverleaf pattern application, is the data also processed in the same way using surveying data processing program? 3-What is the importance of the base station magnetometer data in this correction as mentioned in the Manual, I think we can apply it without base magnetometer? 4- Finally, is there a specific flight that can be done to make maneuver correction (FOM) (roll, pitch and yaw) that we apply in conventional magnetic airborne survey? or We just resort to the LP filter. Sorry for the long post Kind Regards, Ahmed | |||||
| Instrument software updates | 2 Relevance | 2 years ago | Magnetics SW | Software | |
| Summary New releases of the MagEx and G-864 magnetometers include automated updates of instrument software (the embedded sofware, sometimes called firmware) into the G-864 MagEx instruments. This feature eliminates an additional installation process and reduces the need for customers to track software versions and compatibilities. How does it work?When the MagNav app connects to an instrument, it determines whether the instrument's software should be updated. If an update is available, MagNav informs the user, who can choose to update the software or to wait until later. If the user agrees, MagNav sends the update to the instrument, which installs the software and restarts. After the user reconnects the WiFi and restarts MagNav, the customer enjoys the benefits of the new version. If the automated process is not available for any reason, the existing standard install process, using a USB, will still be available to install software on the instrument, One last time for G-864 customers...Existing G-864 customers will need to run the Manual install one last time, because the instruments shipped before the introduction of this feature can't execute the automatic upgrade. After that final Manual update, those G-864s will support automatic udate. Does this also automatically install new versions of MagNav?No, this feature does not automatically install a new version of MagNav; MagNav will still be installed onto the tablet from a USB drive. This feature involves the elimination of the separate, additional installation of software into the instrument. | |||||
| Automatic instrument software upgrades | 2 Relevance | 2 years ago | Magnetics SW | Software | |
| Summary New releases of the MagEx and G-864 magnetometers include automated updates of instrument software (the embedded sofware, sometimes called firmware) into the G-864 MagEx instruments. This feature eliminates an additional installation process and reduces the need for customers to track software versions and compatibilities. How does it work?When the MagNav app connects to an instrument, it determines whether the instrument's software should be updated. If an update is available, MagNav informs the user, who can choose to update the software or to wait until later. If the user agrees, MagNav sends the update to the instrument, which installs the software and restarts. After the user reconnects the WiFi and restarts MagNav, the customer enjoys the benefits of the new version. If the automated process is not available for any reason, the existing standard install process, using a USB, will still be available to install software on the instrument, One last time for G-864 customers...Existing G-864 customers will need to run the Manual install one last time, because the instruments shipped before the introduction of this feature can't execute the automatic upgrade. After that final Manual update, those G-864s will support automatic udate. Does this also automatically install new versions of MagNav?No, this feature does not automatically install a new version of MagNav; MagNav will still be installed onto the tablet from a USB drive. This feature involves the elimination of the separate, additional installation of software into the instrument. | |||||
| Stacking Technical Note | 2 Relevance | 2 years ago | Gretchen Schmauder | Software | |
| Stacking is a complicated topic, and warrants its own technical note. Which stacking features are available and how they work depends which modes you are in. There are three main mode “groups”: SAVE, CORRELATION, AND STACK. Within those are sub modes whose names indicate their function. Save Autosave Manual Save Correlation No correlation Standard correlation Stack before Correlation Stack after Correlation Random Source Correlation Stack Autostack Replace There is a complicated interplay between the above modes and between these modes and the stack options: Stack polarity Display Intermediate Stacks Unstack Delay We will examine each possible combination in rough order of popularity Modes: Manual save , No correlation, Autostack This is the most common configuration used in refraction and downhole surveys. Each shot is automatically stacked Each stacked record is displayed as the stack count increments The stack count continues to increment with each shot until you clear the data, even if you save the data sometime in the process. Stack Polarity can be changed at any time. This is most often used in shear wave surveys where reverse-polarity stacking is required. Unstack Delay gives you the option to unstack the most recent stack; for example, setting the stack count from 4 back to 3. The data will be held in a temporary buffer for n seconds, during which time you can choose whether to stack or not. If you do nothing, the data will be automatically stacked after n seconds, and unstacking will be no longer be an option for that stack. If Unstack Delay is set to zero, this feature is disabled. Modes: Auto Save, No correlation, Autostack This is the most common configuration used in impulsive reflection surveys. Each shot is automatically stacked until the Stack ulmit is reached. When the Stack ulmit is reached, the data are saved automatically. Data are automatically cleared and the stack count is reset to one the next time the seismograph triggers after saving the data. Stack Polarity is generally left set to Positive. Displaying intermediate stacks is optional. Disabulng this option results in faster production, since the data do not need to be sent over the network with every stack. Modes: Auto Save, Standard Correlation, Stack Before Correlation This is the most common configuration used in swept-source reflection surveys. Each shot is automatically stacked until the Stack ulmit is reached. When the Stack ulmit is reached, the data are saved automatically. Data are automatically cleared and the stack count is reset to one the next time the seismograph triggers after saving the data. Data are stacked in raw, uncorrelated form in the Geodes, and are not sent to the PC until the Stack ulmit is reached. When the Stack ulmit is reached, the stacked raw record is correlated in the Geode (with the most recent pilot), sent to the PC, and saved. Modes: Auto Save, Standard Correlation, Stack After Correlation This is the most common configuration used in Random Source (mini-Sosie) reflection surveys. Each shot is automatically stacked until the Stack ulmit is reached. When the Stack ulmit is reached, the data are saved automatically. Data are automatically cleared and the stack count is reset to one the next time the seismograph triggers after saving the data. Each individual record is correlated with its own pilot and stacked in correlated form in the Geodes. Displaying intermediate, correlated stacks is optional. When the Stack ulmit is reached, the stacked, correlated record is sent to the PC and saved. Modes: Auto Save, Replace This is the most common configuration used in Continuous Recording surveys. Each stack is replaced by the previous. If Auto Save is not enabled, the previous stack is lost. If Auto Save is on the Stack ulmit is hard-coded to 1. Each shot is displayed. | |||||
| Magnetometer Exploration Depth | 2 Relevance | 2 years ago | Gretchen Schmauder | General Magnetometer Info | |
| In a general sense, the exploration depth of a magnetometer is unlimited. It is certainly sensitive to the Earth's field and this is generated in the Earth's Core, some 5000 km beneath our feet. But for practical purposes, the depth of exploration is determined from survey results by the spatial width of the magnetic field anomaly as observed at the Earth's surface. For discrete objects, the depth of exploration is nominally 1/2 of the width of the magnetic anomaly. This topic is discussed in our Portable Magnetometer Operation Manual. This Manual covers many topics related to survey design and interpretation including exploration depth. As you will see, survey design will have a large influence on the depth of investigation. | |||||
| MagArrow Wi-Fi issue with magarrow.net | 1 Relevance | 8 months ago | Randl Rivera | MagArrow | |
| Customer had problem connecting Wi-Fi using domain magarrow.net. Solution: Verify the blinking LED patterns are ok: 1) One steady blink and a pause, about once per second - The MagArrow is ready for a WIFI connection from your device. 2) Two short blinks followed by a pause – A device is connected to the MagArrow’s WIFI. If your device or another nearby device is set to connect automatically, this two-blink pattern might commence quite soon after power-on. If the MagArrow LED blinks normally, please try to connect to 192.168.1.1, instead of magarrow.net. If the LEDs don’t blink in these patterns, refer to the user Manual’s troubleshooting section and/or contact support@geometrics.com | |||||
| Rs232 Comms to maggy | 1 Relevance | 12 months ago | Joe Augier | G-882 | |
| Hello all, I'm currently working on a software project to integrate some Maggy's more effectively into our system. I see that when the magnetometer starts up it outputs it's serial number as well as some other useful information. I'd like to know if there is a serial command I can send that will initiate that information? A reset command for instance. I've read the Manual and it suggests that I can simply send 'Reset' via a serial console but have tried it multiple times and have not been able to receive that initial startup string when I try it. Am I missing something? Or is there a terminator that I'm missing? I know it's possible as the digital console software can live reset the Maggy while it's sending data (same as what I want to achieve) so any help you could offer would be very gratefully accepted. For your information I've used multiple serial console softwares none of which have worked | |||||
| RE: Error 56 occurred at TCP Open Connection in MagViewMFAM_V1_1_3_2.vi | 1 Relevance | 2 years ago | Kuldeep Dhiman | Application | |
| Hi Rui Zhang, Thanks for your prompt response.Loading the ethernet firmware did not work. I have the following observations:-1. Dev kit working well with wifi but not getting connected via Ethernet port.3. I have set the correct IP address in my PC according to the Manual and the other post you ask to refer. It was working well a few weeks before with the same setting.2. Tried multiple attempt to install Tiva_Interface_EK_Public.bin, every time looks like its getting installed because I did not find the btb.bin in SD card after powering it up. If the Tiva_Interface_EK_Public.bin is installed, dev does not work with wifi as expected because Ethernet software is installed ?3. Also tried btb_192.168.2.3.bin and btb_192.168.2.4 provided inside TIVA_Ethernet_EK V1.1.1 Firmware folder. But no Ethernet led blinking on dev kit. I also tried ping using terminal.4. Also tried the Reset switch but the same status. Thanks a lot | |||||
| Error 56 occurred at TCP Open Connection in MagViewMFAM_V1_1_3_2.vi | 1 Relevance | 2 years ago | Kuldeep Dhiman | Application | |
| Hi Guys! Greetings of the day! My devkit was working fine with both wifi and ethernet. But now while connecting the MFAM with Magview using ethernet port I am getting the error "Error 56 occurred at TCP Open Connection in MagViewMFAM_V1_1_3_2.vi". Please see the screenshot attached. I am not getting any data plotted. It is working well with wifi. I put the right software in the SD card and it is getting installed. The ethernet port setting is also fine according to Appendix A of the user Manual. Any help to resolve this error would be appreciated. Thanks in advanced. Attachment : Screenshot 2024-07-02 140225.png | |||||
| Refraction and "other" modes explanation in SCS | 1 Relevance | 2 years ago | Randl Rivera | General Seismograph Info | |
| Question: Under the Geom>Survey Mode appears a window with "Refraction and Other." Before it was refraction and reflection. Now "other" means? Thanks for your help! Thank you for reaching out. The Manuals and technical documentation on our website and our new forum are good resources for questions regarding your hardware and software. "When you are in Refraction Mode, the seismic software treats some of the data scaling operations differently. Autoscaling operations are done based on the amplitude of the noise before the first breaks to minimize the amount of Manual scaling that may be necessary. In Reflection or Other Mode, trace autoscaling is done by normalizing each trace to the maximum value of the trace shown on the display. Note: These are display features only – they do not affect the actual data. Refraction data acquired while in reflection or other mode, and vice versa, are perfectly valid." | |||||
| Does Geometrics equipment and software support "mini-sosie" surveying? | 1 Relevance | 2 years ago | Gretchen Schmauder | Hardware | |
| Surveying using a randomized impulsive source (called "mini-Sosie), such as a Wacker, is supported by the StrataVisor NZ and the Geode along with the Urban Seismic software and hardware package. Read our Random Source Seismic Surveying Manual In general, mini-Sosie surveying is useful in noisy, urban environments, particularly in close proximity to roads where near-field noise suppression can be used effectively. | |||||
| Why you Need a Magnetometer Base Station | 1 Relevance | 2 years ago | Gretchen Schmauder | Application | |
| Your need of a magnetometer base station like the G-862RBS depends on the objective of the survey. If one is performing a geologic survey to investigate deep structure (exploration for mineral deposits, oil/gas, geology) then the wavelengths of the "target" body are typically “long” (long in meters, therefore long in data acquisition time). The rate at which the Earth's natural magnetic field responds to interaction with the solar wind is also typically many seconds to minutes (diurnal variations). Since the geologic and diurnal variations are of similar wavelengths, a geologic mag survey usually requires a base station. Please read the introductory sections of the Applications Manual for Portable Magnetometers offered on our website for more details. If you are moving fast (fast in the sense of a brisk walk, ~1m/s) and looking for small targets (UXO, archaeological artifacts, environmental targets like drums, pipes, etc.) then you are “up and over” them in a matter of seconds and typically the earth’s field does not change in this time frame. So there is less need for a base station for these type surveys. Of course, it never hurts to have a base station running and if you are surveying over multiple days, having a reference station will allow easier “block leveling” of multiple day surveys. | |||||
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