82 Chapter2
Making Adjustments
12. Second Converter
8. With nothing connected to the analyzer INPUT 50 Ω (Option 001:
INPUT 75 Ω), press the following keys.
PRESET
PEAK SEARCH
MKR FCTN, MK TRACK ON OFF (ON)
SPAN, 10, MHz
Wait for AUTO ZOOM message to disappear.
9. Set the analyzer as follows:
MKR FCTN, MK TRACK ON OFF (OFF)
SPAN, 0, Hz
10.Loosen the lock nut on A5C1, A5C2, and A5C3. Carefully turn
tuning screws clockwise until they reach the bottom of the cavity. Do
not force the tuning screws down.
11.Turn A5C1 counterclockwise for a peaked signal on the 8566A/B.
Lightly tighten the lock nut.
12.Turn A5C2 counterclockwise for a minimum signal on the analyzer.
Lightly tighten the lock nut.
13.Turn A5C3 counterclockwise for peak signal on the analyzer. Lightly
tighten the lock nut.
14.Repeat step 11 to step 13 until no further improvement is noticeable.
Tighten the lock nuts without changing the amplitude on the
display.
Second Mixer Match
15.After removing W10, connect the microwave spectrum analyzer to
the 2ND CONV OUT port (see Figure 2-18) using the test cable. See
Figure 2-20.
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