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MPA Hub Mount I&O Manual
G.3.2.2 Hybrid Combiner Monitor
The combiner state is displayed on the cable interface module by
illuminating the following LED indicators.
•
•
•
•
Through the serial interface J1, the position of the waveguide
switches is displayed in response to the Secondary Status query.
The four combiner states are decoded by the Station M&C.
Table G-4 Four Combiner States
State
G3.3
CIF Commands
The protocol structure of serial commands is described in protocol
specification 01031233 (refer to the "Drawings" section in this
manual for this document). The table lists the serial commands
and arguments, with conditions of amplifier and hybrid combiner
state, as indicated in Figures G-4 and G-5.
Appendix G-12
COMBINED TO ANTENNA: LED (PA1 COMBINED) AND
LED (PA2 COMBINED) are illuminated.
SINGLE PA1 ONLINE: LED (PA1 BYPASS) is illuminated.
SINGLE PA2 ONLINE: LED (PA2 BYPASS) is illuminated.
COMBINED TO RF LOAD: All four LED's are off and may
indicate any undefined state.
PA Outputs
0
Combined to
Antenna
1
Single PA1
Online
2
Single PA2
Online
3
Combined to
RF Load
S1
S2
Position 1
Position 2
Position 1
Position 1
Position 2
Position 2
Position 1
Position 2
S3
Position 2
Position 1
Position 1
Position 1
Doc. 01031254 Rev. 1
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