85 GSM19 Series Magnetometers - Version 7
GEM Systems, Inc. Advanced Magnetometers
For more technical information, visit www.gemsys.ca
9. TESTING YOUR SYSTEM
The test function checks various parameters. Definitions and actions are as follows:
• A-memory is a test of the RAM. Afterward, press F to return to the test menu.
• B-keys lets you test each key on the keyboard. Afterward, press 1C to return to main menu.
• C-display tests all dots on the LCD by drawing different patterns. Press F to advance and
inspect the drawing to detect LCD problems. Afterward, the unit returns to the test menu.
• D-rom is a test of the ROM (i.e. where the firmware resides). During this test the checksum of
the existing data in the ROM is compared to the checksum stored in EPROM.
• F-buzzer sounds the internal buzzer intermittently provided it is enabled. Press F to return to
test menu.
9.1 STARTING THE TESTING PROCESS (ROM EXAMPLE)
From the Main Menu, press D – test. The system displays the following screen:
SCREEN 88
A - memory B - keys
C - display D - rom
E-ext-trigger F-buzzer
v7.0 9 IV 2002
Press D – rom. The system performs the test and displays a screen similar to the following:
SCREEN 89
00B8C6E1 = 00B8C6E1
F
The numbers on both sides of the equal sign should be the same. The number on the left side is the
checksum stored in the EPROM, and the number on the right side is the calculated checksum. The
checksum shown here is just an example. Each unit has its own checksum number.
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