ABEM i5 40m TX Loops With 3x3m RX Coil Instructions

Table of Contents

ABEM-i5 40m-TX-Loops-With-3x3m-RX-Coil

Prepare the batteries

Charge batteries using the supplied GroundTEM battery charger;
Guidance notes in the lid provide information on checking battery status;
No external adapter is required for the battery charger, just a standard “clover leaf” power lead;
When charged, install the batteries into the GroundTEM unit;
No external batteries are required with the GroundTEM system.

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Lay out the transmitter loop

The loop has a lead-in/lead-out added to each end, so start at the instrument and pull wire off the reel until the first double-marker is found: this will be the bottom-left corner of the loop;
The TX loop can be laid out in a clockwise or anti-clockwise direction, so walk in a straight line until the first single marker is found: this is the next corner of the loop;
Now turn 90 degrees and walk again, to lay down the next side of the square a compass, optical square or tapes can be used to help make the loop square – it does not need to be a perfect square to still perform acceptably;
Use the other black markers on the loop as a guide for the remaining corner positions;
Another double marker should coincide with returning to the bottom-left corner of the transmitter loop;
The remaining wire on the drum is the lead-out back to the instrument.

Lay out the receiver coil

The receiver coil is relatively simple to locate cent rally;
On the lead-in cable, the first double marker should be held at the bottom-left corner of the TX loop;
Now walk towards the top-right corner of the TX loop and the end of the lead-in cable will coincide with the bottom left corner of the receiver coil;
Use the yellow markers on the receiver coil cable as guides for the corners and layout in a square roughly parallel with the TX loop;
Before making any connections, ensure connectors are clean and dry;
Plug the two ends of the RX coil cable into the two connectors on the drum (lead-in for use on 40x40m TX loops)/ pre-amp box (20x20m TX).

Connect the TX loop & RX coil to the GroundTEM

Power-up the instrument

Press the silver power button on the instrument;
The three green lights will indicate that batteries are functioning, and a GPS signal is being received (flashing light).

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A. Connect to the GroundTEM instrument

On your chosen device, look for the GroundTEM Wi-Fi network and connect;
The SSID for the Wi-Fi network is GroundTEM#### where the digits are taken from the serial number;
The Wi-Fi password is GroundTEM (case sensitive);
Start the GroundTEM App (Android compatible, available from the Guideline Geo website);
Follow on-screen prompts if the device and instrument fail to connect.

B. Check configuration

The settings page also allows the choice of “list” or tab view in the data collection screens;
“List” has all views and functions on a single scrollable screen – if this is disabled, the app will display across three tabs as shown in right-most screenshots, above.

C. Choose a suitable measurement script
Scripts are named according to transmitter loop size – select the correct one for the current layout.

D. Enter a project name, line/station numbers, and select the measurement duration

The top box on the main data collection screen allows for data file management it is possible to survey individual stations, along survey lines, within projects;
The measurement duration should be selected: 5 or 10 minutes are normally sufficient but if data are coming in cleanly and consistently, it is possible to stop the measurement early without losing data.

E. Monitor the live results

It is possible to check that the instrument temperature and output current on both the high and low moment cycles is correct, using the monitoring bars;
Decay curves should also be inspected, to ensure that they are smooth and stable between repetitions.

Install ABEM GroundTEM Connect

Download the GroundTEM Connect software from the Guideline Geo webpages (use QR code on first page};
After installing, right click on the GroundTEM Connect icon and tick Run as Administrator.

Downloading data

Connect the PC to the GroundTEM Wi-Fi network (ID: GroundTEM#### Password: GroundTEM);
Click on Connect to Instrument (if it fails, firstly check the Wi-Fi connection, then make sure that the GroundTEM
Connect settings are correct( ), try the Default settings button, if necessary);
The left panel shows projects on the instrument, whilst the right panel shows the default download location;
If the right panel is blank, refresh the view ( );
Select the required proJects in the left window and click on the Copy button, between the two windows;
To change the download location, either add a new directory ( ) or work up through existing directories (.Jback );
If the USF file (an industry standard format, compatible with all 1D inversion software) is corrupt or missing, use the STB -> USF button to generate a new one from the selected project folder.