American Dynamics AD1981 Especificaciones descargar pdf (Pagina 18)

Connection and Setup of the AD2079 2-9

ROM Checksum Test

In this test a software checksum of the ROM contents is calculated for comparison with a known

checksum value. The known value is printed on a label on the AD2079 microprocessor. The label

is visible on the bottom of the unit, adjacent to the test switch button.

When the test is run, the CAMERA display shows the checksum message CS =, and the ENTER

display shows the four digit computed value of the checksum. Verify that the displayed checksum

value matches the checksum printed on the label.

When the ROM checksum test is completed, the built-in test sequence will return to the speaker

test when the test switch button is pressed.

To exit the built-in test mode, unplug the wall transformer, remove the test jumper from the dual

terminal block, return the jumpers to their original positions, re-connect to the system, and then re-

plug the transformer.

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American Dynamics AD1981 Especificaciones Pagina 18