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KPA Ku-Band Indoor Solid-State Power Amplifier
Revision 1
Appendix B
MN/KPA.IOM
B–9
B.4.1
Case Examples
Case 1. Backup
Å
Online unit(s)
1.
Ensure the Online Unit attenuation is set to a value in dB greater than or equal (
≥
) to the
difference in levels measured above.
2. With the Backup Unit forced to be the
active
unit, adjust the OFFSET value in the
CONFIG: Redundancy
Æ
SSPA#1
menu to approximately the difference measured
previously. This will be a negative (-) number.
3. Toggle between the Online and Backup units as being the active path by forcing and un-
forcing a backup through the Backup Unit’s
CONFIG: Redundancy
Æ
SSPA#1
menu.
Ensure the output levels measured are equal. If necessary, re-adjust the Offset Value until
equal levels are measured. (Note that the Backup Unit’s total attenuation level as now
indicated in the
CONFIG: Amp
Æ
Attenuation
menu will be equal to the setting of the
Online Unit less the OFFSET value.)
For Example:
Online Unit Output Level
47.00 dBm
Backup Unit Output Level
45.25 dBm
Backup Unit Offset Value
0.00 dBm
Online Attenuation Setting
3.00 dB (must be >1.75 dB)
AFTER TOGGLING AND ADJUSTING:
Backup Offset Value
-1.75 dB
New Equalized Output Level
47.0 dBm
Backup Attenuation Setting
1.25 dB (3+(-1.75) = 1.25)
Section Notes:
Содержание KPA series
Страница 20: ...Ku Band Solid State Power Amplifier Revision 1 Introduction MN KPA IOM 1 4 Figure 1 3 KPA 080 100 Block Diagram...
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