Agilent Technologies 8590 Series Service Manual page 150

Making Adjustments
24. Tracking Oscillator for Option 010
23.Set SRC TRACK ADJ to 350. This sets the tracking oscillator near the
24.Record the value of SRC TRACK ADJ in
A3A15C3 (TRK OSC CTR) is rated for a maximum of 10 adjustment
CAUTION
cycles. Due to this limitation, adjust TRK OSC CTR only when
absolutely necessary.
25.Adjust A3A15C3 (TRK OSC CTR) until the microwave frequency
26.Repeat
27.Set the analyzer
28.Reinstall the A3 RF Section assembly into the analyzer.
29.Replace the rear-panel jumper between the 10 MHz REF OUTPUT
Table 2-9 Tracking Oscillator Range Centering
N
(MHz)
1 ___________
2 ___________
3 ___________
4 ___________
5 ___________
6 ___________
150
center of its frequency range. (The relationship between the SRC
TRACK ADJ DAC number and the output frequency is nonlinear.)
Adjust SRC TRACK ADJ until the microwave frequency counter reads
Fcenter ±100 Hz.
counter reads 300 MHz ±500 Hz.
step 17 to step 24
adjustment of A3A15C3 is necessary.
LINE
in step 17.
and EXT REF IN connectors.
F1 F2
(MHz)
___________
___________
___________
___________
___________
___________
Table
at least once more until no further
switch to off, then replace the screw removed
Fcenter
(MHz)
_______________ ___________________________
_______________ ___________________________
_______________ ___________________________
_______________ ___________________________
_______________ ___________________________
_______________ ___________________________
2-9.
SRC TRACK ADJ
Setting
Chapter 2