C.7.3 old operating mode commands – Comtech EF Data KPA User Manual
Page 117
KPA Ku-Band Indoor Solid-State Power Amplifier
Revision 1
Appendix C
MN/KPA.IOM
C–21
C.7.3 Old Operating Mode Commands
Note: There are two modes of operation that may intersect – Redundancy Mode and Automatic Mode.
Redundancy Mode
Comtech EF Data’s KPA family of KPAs is designed to automatically sense and configure into redundancy mode when the redundant loop cable is
connected. Polling on the dedicated redundancy bus will not begin until the redundancy loop cable is connected. Each KPA’s designation in a redundant
subsystem is determined automatically via the redundancy interface cable connected between the two (1:1 subsystem) or three (1:2 subsystem) KPAs in
the redundant subsystem.
Automatic/Manual
Mode
Select Automatic Mode:
Confirmation:
Automatic Status:
Confirmation:
Where: y = A for Auto
M for Manual
The default is Off.
This command provides for automatic switching by the backup KPA
if both units are in the Redundancy Mode. This command is only
accepted by the backup KPA. If a primary KPA is set in Manual
Mode and a fault occurs, the backup KPA will log the occurrence
and not act upon further information from the KPA until put into
Automatic Mode.
Backup Mode
Initiate a Backup:
Confirmation:
Retrieve Backup Status:
Confirmation:
Where: x = 1 or 2 KPA number.
Y = F to force a backup
N = to remove a backup
zzzzz = NONE, if no backup active.
ACTIVE, if an automatic backup has occurred.
FORCED, if a forced backup is active.
This command allows the user to force a backup condition for
maintenance and test purposes. This command must be sent to the
KPA designated as the backup KPA to configure the Waveguide
switch to a position such that the backup KPA is Online and the
primary KPA is Offline.
Priority Select
Set Priority:
Confirmation:
Retrieve Priority Status:
Confirmation:
Where x = 1 or 2
This command allows the user to assign priority when operating in
a 1:2 redundant subsystem. This command provides arbitration in
the event that both primary KPAs are faulted simultaneously.