Comtech EF Data HPOD - Manual (Page 140)

HPOD C-, X-, Ku-Band High-Power Outdoor Amplifier MN/HPOD.IOM
Appendix B Revision 8
B–10
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. 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).
b. Disconnect SSPA 2 from the EIA-485 cable. Connect the EIA-485 cable to and power up 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).
c. When complete, the SSPA connected to the “SSPA 1” end of the redundancy interlink cable
should have EIA-485 COMM address 1 and SSPA 2 will be COMM address 2.
4
Connect both units to the EIA-485 COMM cable and power both units on. Confirm correct serial comms
by sending them both an RET? query and noting the response.
5
The units auto detect the presence of the redundancy loop cable. Send an RED? query to both units.
Both should report RED=1, indicating proper detection of the redundancy loop cable.