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Quick Start Guide – Overshot Mode & OSA Assembly
Step 1 – Arming Probe
Power up probe by rolling OSA 360 degrees in a horizontal position; wait for
connection indicator dot to turn solid blue indicating wireless connection;
From main menu select <Arm Probe>;
Select <Overshot Mode> from “Survey Type” drop down menu;
Tick “High Accuracy”;
Set “Hold O” time so that probe wakes up well before you need to take first survey;
Select <OK>. Probe will now power up and can be moved during countdown.
Step 2 – Taking Surveys
Attach OSA to overshot & lower down hole at less than 150m per minute;
When approaching back end, slow down wireline speed to approximately 20 meters
a minute;
When OSA is landed on innertube pause for 15 seconds for probe to settle;
Select <Press when at Bottom of hole>;
Input Depth & then select <OK>;
When “Survey Complete” is displayed press <OK> and proceed to winch OSA &
innertube to surface at normal speed;
When OSA is at surface, suspend innertube using skillet and detach OSA from inner
tube and run out.
Step 3 – Downloading Survey
Power up probe by rolling OSA 360 degrees in a horizontal position; wait for
connection indicator dot to turn solid blue indicating wireless connection;
From main menu select <Read Probe>;
Select Drill Hole Name;
If the hole name already exists select it to append the results to it and press <Enter>;
If the survey is the first survey of a new hole you will have to type in the hole name
then press <Enter>;
Check Latitude is correct (latitude will be stored until changed), select <OK>;
Survey is now complete and down loaded.
To Export Survey file, insert USB stick then select: Main Menu > View Survey > Export
> Basic > OK > Select Hole number > OK > USB stick > OK.
