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HPOD C-, X-, Ku-Band High-Power Outdoor Amplifier
Appendix B
B.4
HPOD Series 1:1 Redundancy Test
B.4.1 Connection
Step
Task
1
Connect HPOD redundancy loop connectors together using a CA/WR12190-1 redundancy loop
cable.
2
Connect a 28V waveguide switch to the switch connector on the redundancy loop cable.
3
Since both units will be connected to a single EIA-485 bus, they will need independent serial
COMM addresses.
To simplify the setup:
a.
b. Disconnect SSPA 2 from the EIA-485 cable. Connect the EIA-485 cable to and power up
c. When complete, the SSPA connected to the "SSPA 1" end of the redundancy interlink
Connect both units to the EIA-485 COMM cable and power both units on. Confirm correct serial
4
comms by sending them both an RET? query and noting the response.
The units auto detect the presence of the redundancy loop cable. Send an RED? query to both
5
units. Both should report RED=1, indicating proper detection of the redundancy loop cable.
Power up the unit connected to the "SSPA 2" end of the CA/WR11124-1 cable. Using a
EIA-485 connection and a terminal program, set the serial COMM address to "2"
(SPA=0002).
the unit connected to the "SSPA 1" end of the redundancy loop cable. Confirm this unit's
serial COMM address is "1". If required set it to "1" (SPA=0001).
cable should have EIA-485 COMM address 1 and SSPA 2 will be COMM address 2.
B–10
Revision 6
MN/HPOD.IOM
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