Manual mode— Total-field/Gradiometer (Semi-automatic)
ENVI-MAG Manual A5-9
Operation
Press the “ON” and “SETUP” keys simultaneously to get the configuration menu.
Select configuration
6-Mineral Exploration. This is described
fully in “Configuration menu” on page A4-3.
Check your setup
1. Set up Line and Station Number and Separations as shown in the sample
setup on page A4-7.
2. Do the setup as shown under “Instrument setup” on page A4-12, except set
the:
▲ CYCLE REPEAT: as no
▲ CYCLE DELAY: as 0
3. Do the setup as shown under “Sample stop-and-go gradiometer setup” on
page A4-17.
4. Enter a Note as shown under “Note entry” on page A4-25.
Start survey
5. Proceed to your first location.
6. Hold the sensor steady and Press the “START” key to take a reading.
7. Inspect the data.
8. Re-adjust the TUNE FIELD in the mag setup if necessary to the
current total-field value. Re-check the tuning periodically in case that the
ambient field is changing considerably during the survey day.
9. Press the “RECORD” key to save the data.
10. Press “ESCAPE”, optionally followed by “OFF”.
11. Proceed to the next station to the West.
12. Move the cursor to ST:
13. Press the “+” key. Verify that the Station has decremented to 40 W.
14. Take a reading and record the data.
15. Continue along the line and take a reading at each station.
16. At 10 W, before you press the “START” key, Press the “NOTE” key and then
the “1” key to enter the note “fence 1”. You may also enter your Macro or
any unique note after the measurement, but before you Press the
“RECORD” key.
17. After completing 50 W, proceed to 50 W on Line 18 N.
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