ALO

The Automatic Low Order mode is used when circuit strings are tested, and a low order test scan is performed. If the test programmer is using the “F” test at the beginning of the circuit without enabling ALO, it is necessary to begin the test with the lowest address in the circuit. If ALO is enabled, then the circuit string can be entered in any address order, and NETS automatically detects the lowest address in the string from which to perform the low order bulk test.

Source: NETS User Manual, Revision D, document 132-06035-0006, section 4.3.2.1.