Unihedron SQM-LU-DL-V, Operator'S Manual

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1 Introduction
2. Go outside to the desired location and connect the battery to the meter as shown in Figure 1.1. The LED will come
on for 3 seconds initially then come one once per second recording every one second as long as the meter is not
moved around too much.
Figure 1.1: Handheld battery pack
3. Point the meter at the starting location in your survey and hold it still while waiting at least one second. The LED
will flash for each reading taken.
4. Point the meter at the next location and wait at least one second for a reading to be gathered (LED will flash).
5. Repeat the above step until the entire sky is covered (about 20 degree steps apart should suffice).
6. Disconnect the battery and connect the meter to the PC. The meter will still be recording every one second.
7. Use UDM to turn off datalogging, select trigger = Off.
8. Use UDM to retrieve all the records.
9. Note: Moving the meter around slightly while connected to the computer will prevent readings from being taken.
Use this technique if you do not want to edit out those useless readings from the log file later.
10. To generate an all-sky map, follow the instructions in 7.10.2 Contour plot.
Live Altitude/Azimuth view
You can test the magnetic effect on the meter by watching the live view of azimuth (as seen in Figure 1.2) with UDM as
follows:
1. Go to the “Vector” tab.
2. Press the “Calibrate-vector button” to reveal a new window.
3. Select the “Overview” tab.
4. Press the “Monitor” toggle button ON.
5. Move the meter about to see both Altitude and Azimuth change.
6. Move magnetic parts near the meter to see the effect on Azimuth. See Figure 1.3 for the location of the Altitude/Az-
imuth co-processor.
7. The Zenith level display shows a “bubble” style level gauge that is centered when the meter is point at the Zenith.
8. Press the “Monitor” toggle button OFF.
9. You can close the calibrate dialog to go back to normal UDM operation.
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Unihedron SQM-LU-DL-V Operator’s Manual -
20211013