Comtech EF Data RC-1160 - Manual (Page 34)

Operation Revision 1
RC-1160 RC-1260 Redundancy Switch Controllers MN-RC1160RC1260
3–4
3.2 Modes of Operation
3.2.1 RC-1160
The RC-1160 can operate in three different modes:
• Single LNA/LNB
• Dual singles
• 1:1 Redundancy
3.2.2 RC-1260
The RC-1260 can operate as a single, dual single, triple single, 1:1, or 1:2 switch controller. The single and dual
modes are covered in Section 3.2.2.1.
3.2.2.1 Single and Dual Mode
The unit remains in the Manual mode at all times for the single or dual modes.
If there is a failure of an LNA/LNB, the respective fault light will illuminate, but no switch over will occur. The
RC-1260 performs equally in this mode.
Because there are no indicator contacts from the waveguide switch, the online indicators will not illuminate. For
appearance purposes only, the indicator connections could be made in the J1 mating connector to simulate the
waveguide switch. Refer to Chapter 1 for more information.
3.2.2.2 1:1 Configuration Mode
In this mode, two LNAs are connected to the same antenna feed through a waveguide switch. Only one of the
two LNAs can be connected online. The other LNA/LNB remains on stand-by, although powered at all times.
Either LNA/LNB can be online when the unit is switched from manual to auto mode.
In case of failure of the online LNA/LNB, the switch controller will change the waveguide switch to the
opposite position. The controller will then go to manual mode to prevent any future switch backs to the failed
unit.
If the stand-by LNA/LNB fails, the switch controller will switch from auto to manual mode.
3.2.2.3 Triple Single Mode
In the triple single mode, the auto/manual switch stays in manual position at all times. This allows the unit to
power three independent LNAs.
The redundancy feature of two separate AC power sources combined with two internal power supplies is also an
option in this mode.