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MPA Hub Mount I&O Manual
Appendix F
Optional Internal 1:1 Switch Controller
The optional Internal switch controller allows users to operate two MPA Hub
Mount amplifiers in a 1:1 redundant system. The internal controller also has
the output to drive the switch directly. The user only needs to connect a
harness between the two amplifiers and a wave-guide switch. This harness
and the necessary wave-guide between the switch and the two amplifiers can
be custom designed by CPI as part of a redundant 1:1 system or designed by
the user into their own custom configuration. Connection details are shown
in Figure F-1.
This option is installed in both amplifiers. Each amplifier can receive and
send status to the other amplifier.
When PA-1 and PA-2 are configured for this option, they can also report
switch position back to the user through the CIF (computer interface) and are
reported on either the CPI remote control panel or the supplied setup &
remote control software (Note: See Appendix B for info on remote software).
Additionally, the user can change modes or remotely toggle the wave-guide
position through the remote or computer CIF control.
The internal controller receives external relay status signals from the other
amplifier. These relays can be configured for multiple types of 1:1 switch
systems. The relays are normally configured to switch the wave-guide when a
"Low RF Alarm" occurs. The "Low RF Alarm" can be in "Rigid" or "Flexible"
mode. See chapter 4.3 in this manual for more information on the relay
configuration modes.
The switch controller can be set to be in either auto or manual mode. If in
auto mode, and a relay fault occurs the contacts open and the switch
controller will toggle the wave-guide switch to the other amplifier. In order
for the switch controller to respond to toggle commands, its mode must first
be changed from auto to manual.
Optional Internal switch controller F-1
Doc. 01031254 Rev. 1
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