Paradise Datacom 4 RU Chassis, Operation Manual

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40 201627 REV X 4 RU SSPA Chassis Operations Manual
2.2.6.4 Unit Status
Allows user to select between HPA1, HPA2 and HPA3.
2.2.6.5 Priority Select
For use in 1:2 redundant systems. Allows the user to select Polarity 1 or Polarity 2.
2.2.6.6 N+1 system operation parameters
Under this set of menus, the user may select or adjust important N+1 options.
2.2.6.6.1 N+1 Array size
This menu sets the type of N+1 system or disables N+1 operation for this unit. Choices
include the following: Disable N+1; System of 4 units; System of 8 units; or System of
16 units. A single 4RU chassis in N+1 operation utilizes a system of 4 units.
Units connected to a N+1 system must have an identical N+1 array selection or have
N+1 operation disabled. A unit connected to a N+1 link cable with the N+1 option
disabled will not be controlled by a N+1 Master. To the Master unit, it will appear as a
faulted chassis.
2.2.6.6.2 N+1 Address
This option allows the selection of the unit’s N+1 priority address. All units in a N+1
array must be unique and with a contiguous N+1 address. Due to the architecture of
the 4RU chassis, a single chassis utilizes one or two addressing units (depending on
the number of SSPA modules present; typically addresses 1 and 2). For a system
made up of two 4RU chassis, the second chassis utilizes addresses 3 and 4.
The unit with the lowest N+1 address has the highest priority when the system selects
a new Master unit in the event of the failure of the assigned Master unit. A unit with
Address 1 will be the default Master unit. If Unit 1 fails, Unit 2 will take its place as the
Master unit.
2.2.6.6.3 Auto Gain control
This option allows the user to enable or disable the N+1 Automatic Gain option. When
disabled, the system can be adjusted as if it was a single SSPA unit, attenuating
system gain between 0 and 20 dBm. System gain will not apply automatic gain
compensation if any of the units in the N+1 redundancy array fails. When this option is
disabled, the Master Unit default System Information page will display:
SSPAGain(dB):XX.X.