Teledyne 6 RU Chassis, Руководство по эксплуатации

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6 RU SSPA Chassis Operations Manual 202058 REV AA 95
6.7.2 Setting SSPA’s Polarization Priority
Polarization priority selection becomes critical in the case when two out of the three
SSPAs have developed summary faults. In this occasion, the remaining online SSPA
may redirect its output to support either polarization. This setting applies only to HPA1
and HPA2 units. HPA3 has no physical ability to redirect its output to polarization 1
output due to obvious topological factors in the system. The setting for HPA1 doesn’t
have to match that of HPA2 and may be selected to suit the particular system needs.
To set SSPA polarization on any SSPA, follow steps below:
1. From front panel of SSPA, press the
Main Menu
key;
2. Select
6.Redund
and press the
Enter
key;
3. Select
5.Priority
and press the
Enter
key;
4. Select the desired polarization:
1.Pol1
or
2.Pol2
and press the
Enter
key
6.8 Online/Standby Amplifier Selection
To instantly determine the online state of a particular SSPA, the
Unit 1
button on the
front panel keypad (see
Figure 6-5
) should be illuminated. To put an SSPA in standby
mode, press the
Unit 1
key and the light should go off. If the system is in “Auto” mode,
the standby SSPA should accept the online state if cleared from a summary fault. The
Unit 1
LED on the standby SSPA will illuminate, indicating it is online and the wave-
guide switch(es) will rotate to the correct position to redirect its output power to the
selected polarity. If the standby SSPA doesn’t accept the online state, the first SSPA
will revert to the online state after one second.
Current SSPAs polarity output selection can be monitored from informative layer of the
front panel display or through remote control protocol. The standby SSPA will indicate
“None” as its priority selection. The on-line SSPA will indicate either “Pol1” or “Pol2”,
depending on the current system state.
In Manual mode, the standby SSPA will always accept the online state regardless of its
own fault status.
The operator can verify the state of the system waveguide switches by browsing the
informative screen [3] on the front panel display. Items RFSW1 and RFSW2 will indi-
cate the state of the waveguide switches, as detected by the SSPA circuitry. If either
switch position can’t be detected: “Fault” will be displayed.
Figure 6-5: “Unit 1” Indicator from Front Panel