HP 8566B Adjustment Manual page 343

177. If the Preselector DAC value difference recorded in step 176
is greater than f0.5, remove the A6A12 YTX Driver Assembly
from the RF Section and determine the current values of
factory-select components A6A12C1, A6A12C2, A6A12Cl1, and
capacitor values to install for A6A12C1, A6A12C2, A6A12Cl1,
and A6A12C23. Find the line in
to the current values of the four factory-select capacitors
176 to the line number corresponding to the current values to
determine the line number of the final capacitor values to install
for A6A12C1, A6A12C2, A6A12Cl1, and A6A12C23. See 'Ihble
3-4 for HP part numbers. See Figure 3-90 for the locations of
For example, if the average Preselector DAC value for [AUTO)
SWEEP TIME is 35.4 and the average value for
that the currently installed value of A6A12Cl is 0.33 pF, the
value of A6A12Cll is 0.22 PF, and that A6A12C2, A6A12C3,
and A6A12C23 are
line 0 of 'lkble 3-16. The final capacitor values are listed in line
3, determined by adding the difference of +3.4 to line number
0. The value of A6A12Cl is correct already, and A6A12Cll is
changed to a 0.1 ,QF capacitor.
Line
0.33
- 8
- 7 0.33
- 6 0.33
- 5 0.33
- 4 0.33
- 3 0.33
- 2 0.33
- 1 0.33
0.33
0
0.33
0.33
0.33
0.15
0.33
open
open
open
2 1. Frequency Response Adjustments
the table that corresponds
not installed. These values correspond to
Capacitor Values
Capacitor Value
0.33
0.22 0.22
0.22 0.22 0.22
0.22 0.22
0.22
0.22 0.33
open
open 0.22 0.33
0.22 0.22
open
0.15
open 0.22
0.22 0.10
open
open 0.22 open
open 0.22 open
open 0.15 open
open
open 0.10
open 0.22 open
open
open open
0.22 open
open
0.22 open
open
open 0.15 open
[ )
SWEEP TIME
open
open
open
open
open
open
open
open
open
open
open
open
open
open
open
open
open
Adjustments 3-203