Comtech EF Data KST-2000A/B - Manual (Page 64)

Ku-Band Satellite Transceiver Revision 9
Operation MN/KST2000AB.IOM
3–16
3.6 1:1 Redundant KST-2000A/B System Operation
This section details the 1:1 redundant KST-2000A/B system operation. Error! Refer-
ence source not found. shows a typical 1:1 system block diagram, comprising:
• Two KST-2000A/B transceiver systems
• One RJU-2000 redundancy junction unit
• Associated cables and hardware
The 1:1 redundant system is a highly flexible signal protection system with three
user-selectable modes of operation.
The key components that make up the redundancy system are the:
• RJU-2000
• 1:1 interconnect cable
• TX and RX waveguide switches
The RJU-2000 provides TX and RX IF signal routing functions, and command and status
signal routing throughout the system.
The 1:1 interconnect cable routes status and control signals between the KST-2000A/Bs
and the TX/RX switches through the RJU-2000.
IMPORTANT
This cable also designates the A Unit and B Unit KST-2000A/B, so
strict attention must be paid to how this is connected into the system.
The A Unit connector of this cable (P1) must be connected to the A
Unit KST-2000A/B, otherwise the system will not operate properly.
Figure 3-9 shows a redundant KST-2000A/B, and the location of the A Unit. The same is
true for the interconnecting cables between the redundant HPA assembly and redundant
LNA/B assembly.