WilliamsRDM, Inc.
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Solar Tester
The Solar Tester is shown in Figure 2. The tester has three buttons for the user interface and a backlit LCD for
easy readability in all lighting conditions. The device has two connectors for testing various solar products, the
“TEST” port and the “AUX” port. The “TEST” port is used to test WilliamsRDM Smart solar devices while the
“AUX” port is used to test WilliamsRDM and equivalent standard solar devices and solar panels. The unit is
powered on by pressing the “SELECT” button and powered off by pressing and holding the “SELECT” button for
about 2 seconds. The Up/Down arrows are used to navigate the menu system and the “SELECT” button is used
to select a test as well as to exit from a test back to the main menu.
Figure 2: Solar Tester
Once powered on the version screen is displayed for several seconds then the tester displays the menu system
as show in Figure 3. The up and down arrows control the cursor and are used to select the desired test. The scroll
indicator tells the user that there are additional tests above or below the displayed menu items. The display will
scroll up or down as needed to allow the user to reach the desired test. Once the cursor is pointing to the desired
test the “SELECT” button is used to start the test. The test port indicator identifies which port the test will be
performed on. The [T] indicates the TEST port will be used while the [A] indicates that the AUX port will be used.
The user will select the test with the connector that mates with the solar product they are trying to test. Once
the test is complete the “SELECT” button is then used to exit from the test back to the main menu to select a
different test.