4 RU SSPA Chassis Operations Manual
201627 REV X
21
The alarm connection from each power supply chassis is parallel connected by
supplied cable L206406-1. This cable also contains a current sharing line between the
two power supply chassis.
The power supply alarms may be monitored via the SSPA Chassis front panel menu.
See
Section 2.1.1.2
. In the event that one or more power supply modules enter a fault
condition, the SSPA Chassis will report a major (Summary) fault and will mute until the
fault conditions are cleared.
2.1.2.4 RF Input Port (J1)
The type N female connector on the right side of the rear panel is used as the RF
input.
2.1.2.5 RF Output Port (J2)
The waveguide connector in the middle of the rear panel is used as the RF output.
Note: Do not operate the amplifier without having a termination or
mating connection on the RF Output Port. RF Hazard warnings
apply.
C-Band units utilize a WR137 rigid waveguide with a CPRG137 grooved flange with
through holes; X-Band units employ a WR112 rigid waveguide with a CPRG112
grooved flange with through holes; Ku-Band units use a WR75 waveguide with a
grooved flange with through holes; and S-Band units have a type N female connector.
2.1.2.6 Switch Port (J3)
A 6 pin Molex connector header with blind insertion system guides (mates with Molex
P/N 39-01-2060) is used in a 1:1 Redundancy System to provide switching for the
waveguide transfer switch (RF Switch).
Table 2-1
shows the pin outs for the Switch Port (J3).
Table 2-1: Switch Port (J3) pin outs
Pin #
Function / Description
1
+28V Switch Drive Output. 3 Amp over current protection.
2
Switch 1 Position 2 drive
3
Switch 1 Position 1 drive
4
+28V Switch Drive Output. 3 Amp over current protection.
5
Switch 2 Position 2 drive
6
Switch 2 Position 1 drive
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