Product specifications

KPA Ku-Band Indoor Solid-State Power Amplifier Revision 1

Appendix B MN/KPA.IOM

B–10

Case 2. Backup

Online unit(s)

1. With the Backup Unit forced to be the active unit, adjust the Offset Value in the

CONFIG: Redundancy menu to roughly the difference measured previously. This will

be a positive

(+) number.

2. 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.

Make sure the output levels measured are equal. If necessary, re-adjust the Offset Value

until equal levels are measured. (Note that the Backup Unit total attenuation level as now

indicated in the CONFIG: Amp Æ Attenuation menu will be equal to the setting of the

Online Unit plus

the Offset Value.)

For Example: Online Unit Output Level 47.00 dBm

Backup Unit Output Level 48.75 dBm

Backup Unit Offset Value 0.00 dBm

Online Attenuation Setting 3.00 dB

AFTER TOGGLING AND ADJUSTING:

Backup Offset Value +1.75 dB

New Equalized Output Level 47.00 dBm

Backup Attenuation Setting 4.75 dB (3+(+1.75) = 4.75)

Section Notes: