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CNV LOSS VS FREQ
Table 3-3. Flatness Points and Conversion Losses for Frequencies above 18 GHz
Frequency
Frequency Range (GHz)
Band
K
18.0 to 26.5
A
26.5 to 40.0
Q
33.0 to 50.0
U
40.0 to 60.0
V
50.0 to 75.0
E
60.0 to 90.0
W
75.0 to 110.0
F
90.0 to 140.0
D
110.0 to 170.0
G
140.0 to 220.0
Y
170.0 to 260.0
J
220.0 to 325.0
PRESEL PEAK
NOTE
The
PRESEL PEAK
preselected external mixers. The preselected configuration must initially be
set up using the
Chapter 3
Using 8563A, 8561B, 8560A, or 8560 E/EC-Series Spectrum Analyzers
displays the stored conversion loss for a specific frequency in the
current band. This allows amplitude correction to be entered to
compensate for changes in conversion loss with frequency. To enter a
new value, use the data keys. To change the displayed frequency, use
the step keys. Any changes to the data also affect the mean
conversion loss stored under
page 77 shows the number of flatness points for each band and the
default flatness values. To view the correction, connect a 310.7 MHz
signal of a known amplitude (approximately − 30 dBm) to the IF
input and set the analyzer to sweep the associated band.
Number of
Flatness Points
6
8
7
6
6
7
8
6
7
9
7
8
(available only with preselected external mixing) displays the
preselected external mixer softkey menu, which is described below.
This softkey menu is only available when the
softkey under
is set to "preselected" mode.
CONFIG
softkey and its lower-level softkeys are only for use with
EXT MXR PRE UNPR
.
AVERAGE CNV LOSS
Point
Default
Spacing
Conversion Loss
2 GHz
30 dB
2 GHz
30 dB
3 GHz
30 dB
4 GHz
30 dB
5 GHz
30 dB
5 GHz
30 dB
5 GHz
30 dB
10 GHz
30 dB
10 GHz
30 dB
10 GHz
30 dB
15 GHz
30 dB
15 GHz
30 dB
EXT MXR PRE UNPR
softkey under
CONFIG
Operation
Table 3-3.
on
.
77
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