Paradise Datacom 4 RU Chassis, Руководство по эксплуатации

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62 201627 REV X 4 RU SSPA Chassis Operations Manual
4.2.1.3 Setting SSPA1 unit status.
1. From SSPA front panel press the “Main Menu” key;
2. Select item “6.Redund.” and press “Enter” key;
3. Select item “4.Status” and press “Enter” key;
4. Select item “1.HPA” and press “Enter” key.
Note: SSPA2 unit status must be set to HPA2.
Repeat steps 4.2.1.1 through 4.2.1.3 for SSPA2.
4.2.2 Online / Standby Amplifier Selection
To determine the on-line state of a particular SSPA, check that the “Unit 1” button on
the front panel keypad (See
Figure 4-6
) is illuminated. To put the SSPA in standby
mode, press the “Unit 1” key and the light should go off. If the system is in “Auto”
mode, the second SSPA will accept the on-line state only if there is no summary alarm.
The “Unit1” LED on the second SSPA will illuminate, indicting it is on-line and will
rotate the waveguide switch to the correct position. If the second SSPA does not
accept the on-line state, the first SSPA will revert to the on-line state after 1 second.
Note: Only the on-line SSPA can be switched to standby. The reverse
process, switching the standby SSPA to the on-line state, will not work.
In manual mode, the standby SSPA will always accept the on-line state regardless of
its own fault status. The user can verify the state of the waveguide switch by browsing
to informative screen [3] on the front panel display. Item RFSW1 will indicate the state
of the waveguide switch, as detected by the SSPA. If the switch position can not be
detected; “Fault” will be displayed.
4.2.3 Auto versus Manual switching mode
Normal operation mode for a RM SSPA in 1:1 redundant configuration is “Auto”. This
mode provides automatic detection of a SSPA fault and switchover to the operational
SSPA. The system is also protected from operator errors; selecting a faulted SSPA is
not allowed. In situations when system maintenance must be performed, “Manual”
mode should be used. In “Manual” mode, the operator can select the on-line and
standby SSPA by pressing the “Unit1” key. The system will not provide automatic
Figure 4-6: “Unit 1” Indicator from Front Panel