HP 8560E Service Manual page 130

7. Disconnect W22 (10 MHz frequency counter) from A2J8. The display
will probably appear distorted and error messages may appear.
Ignore the error messages.
8. Adjust A2R152 (16 MHz PLL ADJ) until the microwave frequency
counter reads 14.4 MHz ± 200 kHz.
9. Reconnect W22 to A2J8. The microwave frequency counter should
read 16 MHz. If the counter reads 16 MHz and the display is still
distorted, perform the display adjustments in "Display Adjustment,"
in this chapter.
10.On the spectrum analyzer, press
to clear any error messages.
IF
Chapter 2
Adjustment Procedures
19. 16 MHz PLL Adjustment
and
CAL REALIGN LO and
129