Teledyne 6 RU Chassis, Руководство по эксплуатации

Страница: 90 / 172

90 202058 REV AA 6 RU SSPA Chassis Operations Manual
The system current state is determined by the position of the two waveguide switches.
Each HPA constantly monitors the state and assumes an online or standby state from
the switch position. All three HPAs need to be configured to “HPA1”, “HPA2” and
“HPA3” status according to their relative position to the waveguide switches. These
settings need to be provided to each HPA by the operator through the HPA front panel
menus or through a remote control interface.
The system is capable of operating in two modes: “Auto” and “Manual”.
Normally, the system needs to be configured in “Auto” mode. In this mode, when an
HPA develops a summary alarm, the system will automatically switch to the backup
HPA. “Manual” mode should be used only for maintenance purposes. In “Manual”
mode, automatic switchover will be performed if a malfunctioned HPA’s controller card
is completely dead. If an HPA has a summary fault, but the controller card is still alive
then HPA will remain in online state.
Both modes allow the operator to switch HPAs from online to standby state by pressing
the “Unit1” button on the front panel or through command on remote interface. Typical
switchover time is 200ms. Switchover also can be performed by physical rotation of
one or both waveguide switches. Unlike internal 1:1 redundancy mode, the HPA will
not prevent the operator from turning the switch.
6.1 Required hardware
•
Three Teledyne Paradise Datacom RM SSPAs with controller card firm-
ware revision better than 2.50 and I/O card version better than 1. Internal
1:2 redundancy mode for earlier hardware/firmware revisions is not avail-
able. If you purchased your SSPA as a standalone unit or as part of a 1:1
system, consult with Teledyne Paradise Datacom to determine if the revi-
sion of digital controller is 1:2 enabled. 1:2 redundancy Mode, unit HPA
status and polarization priority need to be selected on all connected
HPAs.
•
1:2 link cable. The link cable allows redundancy state information to pass
between the HPAs and should be connected to the HPA’s Link Port J8.
Important! Cable ends are not symmetrical! When connecting HPAs
with the link cable make sure that connected units HPA status
(HPA1, HPA2 or HPA3) match the labels on the link cable ends!
•
1:2 switch cable. This cable provides an electrical connection between
the HPAs and waveguide switches. The cable allows any connected HPA
to control both waveguide switches.
Important! Cable ends are not symmetrical! When connecting, ob-
serve the labels!