ADJUSTMENTS

MODEL8559A

ADJUSTMENTS

5-25. FIRST CONVERTER ADJUSTMENTS(Cont'd)

Set FREQ SPAN/DIV to 1 MHz. Note position of comb tooth.

Adjust A7R81 (MO) to place comb tooth midway between position noted in step 38 and center graticule line.

Set FREQ SPAN/DIV to 2 MHz.

Adjust TUNING to place comb tooth in center graticule line.

Set FREQ SPAN/DIV to 1 MHz. Note displacement of comb tooth from center graticule line.

Repeat steps 36 through 42 until displacement of comb tooth is less than 0.2 major division when FREQ SPAN/DIV is switched from 2 MHz to 1 MHz.