SAM-III Construction Manual
See last page for document and copyright information, File: SAM-III Magnetometer Construction.doc, Page 31
Use the F2 or F3 function keys to scroll the hour field. Set the hour to UTC so that your magnetograms
use the same time scale as other geomagnetometers. When set to the correct hour, press F1.
The screen to set the minute appears
25.07.09 00:31:21
Set time: minute
F1=OK
F2=+ F3=-
Use the F2 or F3 function keys to scroll the minute field. When set to the correct minute, press F1. Note
that the seconds cannot be set, but the seconds are reset to zero each time you scroll the minute field.
With a little practice, you can set the minutes and seconds exactly to correspond to your watch or PC
clock. The clock is now adjusted. It will keep time with power removed from the SAM-III controller PCB
(the real time clock IC is battery powered by G1). However, if you ever remove the JP2 header shorting
block with no power on the SAM-III, the clock will have to be reset. This can be done when the SAM is in
operation as described in the Software Setup Guide.
Go to the next test.
Test Inputs and Outputs
The SAM-III input and outputs appear on the 8-position pluggable terminal block X1. The wiring of the
terminal block is shown below.
Test the Alarm Relay
After the clock has been adjusted, the following text should show on the LCD:
Alarm switch:
Relay switches in
1s-interval. Press
F1 to confirm.
Note: Early versions have a spelling error on the display (Relais switches in). The relay switches every
few seconds. You may be able to hear the clicking if you put your ear near the board. If you do not hear
anything, set a digital multimeter to measure resistance and connect one lead to position 3 of X1 and
the other to position 4.
