HP 8566B Adjustment Manual page 264

13. Sweep, DAC, and Main Coil Driver Adjustments
3-124 Adjustments
[
59. Alternately press
for marker frequency of 4.000 GHz as indicated by display
annotation.
Key in
6 0 .
61. Adjust A19R43 25 GHz SPAN and A19R32 2.5 GHz SPAN fully
counterclockwise.
62. For HP 8566A, set synthesized sweeper for output of 5.820 GHz
at 0 dBm. For HP 8566B, set synthesized sweeper for output of
5.805 GHz at 0 dBm.
63. Two separate signal peaks should be visible on display. Readjust
from each other.
64. Use synthesized sweeper TUNING control to vary synthesized
sweeper output frequency f50 MHz from frequency in step 62,
pressing
PEAK
of band overlap point.
Use synthesized sweeper TUNING control to vary synthesized
65.
sweeper output frequency f50 MHz (from frequency in step
62) in 1 MHz steps. Readjust A19R43 25 GHz SPAN slightly as
necessary so that amplitude of displayed signal peak varies less
than 3 dB over entire f50 MHz range bracketing band overlap
point.
For HP 8566A, set synthesized sweeper for output of 5.800 GHz
66.
at 0 dBm. For HP 8566B, set synthesized sweeper for output of
5.800 GHz at 0 dBm.
[ )
67. Key in
START FREQ
68. Two separate signal peaks should be visible on display. Readjust
from each other.
69. Use synthesized sweeper TUNING control to vary synthesized
sweeper output frequency -5 MHz (from frequency in step 66)
in 100 kHz steps. Readjust A19R32 2.5 GHz SPAN slightly as
necessary so that amplitude of displayed signal peak varies less
than 3 dB over entire f5 MHz range bracketing band overlap
point.
For HP 8566A, set synthesized sweeper for output of 12.520 GHz
70.
at 0 dBm. For HP 8566B, set synthesized sweeper for output of
12.510 GHz at 0 dBm.
Key in
71.
13.8 GHz, RES BW (AUTO.
72. Use synthesized sweeper TUNING control to vary synthesized
sweeper output frequency flO0 MHz from frequency in step 70,
pressing
PEAK
of band overlap point.
)
and adjust A16R71 GAIN 2
PEAK SEARCH
)=, (
PRESEL PEAK START
) both times to peak preselector on each side
5.55 GHz, CsTopj 6.05 GHz, [REsBW_) 300
)=, (START FREQ) 11.2 GHz, Cm)
PEAK
)
both times to peak preselector on each side
4.5 GHz,