Agilent Technologies HP 8566B Spécifications Page 328

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2 1. Frequency Response Adjustments
73. On the spectrum analyzer, key in
[SWEEP
TIME)
5s,
LOG SCALE
[ENTER
dB/Divj
1
dB,
TRACE B
IVIEW),
m
4,
C-1
2s,
TRACE B
[j],
IHOLD).
74. Readjust 17-turn (YTX Diode Bias) potentiometer
A6AlOR18
VB
to maximize the overall level of the displayed signal responses
from 2.0
GHz
to 5.8
GHz
on the spectrum analyzer display.
75. Readjust 25-turn (YTX Drive) potentiometers
A6A12R63
5.8
GHz
and
A6A12R66
2
GHz
to maximize the overall level of
the displayed signal responses from 2.0
GHz
to 5.8
GHz
on the
spectrum analyzer display.
76. Gradually readjust (Band B Lower Segment)
A6AllR51
Bl
and (Band B Upper Segment) A6AllR69 B2 as necessary for
maximum flatness of the displayed signal responses.
77. On the spectrum analyzer, key in SWEEP
@FEE],
&WEEP TIME)
15Os,
TRACE A @KKQ, TRACE B
(jj),
(SAVEI)
6, TRACE B
(CLEAR-WRITE],
m
5,
(jT5E).
78. Press SWEEP
[SINGLE]
on the spectrum analyzer and wait for the
sweep to complete (150 seconds) and the SWEEP LED to turn
off. As the spectrum analyzer tunes from 2.0
GHz
to 5.8
GHz,
the spectrum analyzer frequency response should be displayed as
TRACE B, as shown in Figure 3-96.
ST
ART
SW
s-
P
Figure 3-96.
Typical Frequency Response (2.0
GHz
-
5.8
GHz)
79. On the spectrum analyzer, key in (RECALL) 4, (HOLD) and repeat
steps 74 through 76 as necessary.
80. On the spectrum analyzer, key in [RECALL) 5 and wait for the
sweep to complete (150 seconds) and the SWEEP LED to turn
Off.
3-188 Adjustments
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