Specifications

42 209351 REV B Operations Manual, Redundant System Controllers
4.1.1 LNA / LNB 1:1 Redundant System Operation
This section covers the operation of the RCP2-1100 controller with a Teledyne Para-
dise Datacom LNA or LNB Redundant System. A typical LNA / LNB redundant system
consists of an outdoor plate assembly, the RCP2-1100 indoor controller, and an inter-
connecting control cable. Figure 4-2 shows the major components of a typical 1:1 LNA
system.
The LNAs or LNBs are powered by the RCP2-1100 Controller via the control cable.
Two power supplies are included in the controller for total system redundancy. The
power supplies are diode connected so that only one supply can operate the system.
The RCP2-1100 supplies +15 VDC to power the LNA / LNB and +26 VDC to operate
the transfer switch. A failure in an LNA or LNB is typically noted by a change in the DC
bias current. The RCP2-1100 has current window comparators that monitor the current
drawn by each unit and will report a fault if the current falls outside of the preset cur-
rent window. The nominal current and window width setting are factory preset to the
particular LNA / LNB system, however both are easily adjustable via the front panel
control. A typical 1:1 Redundant LNA system is shown in Figure 4-3.
LNA 1
LNA 2
SW 1
LNA Plate Assembly
Control Cable, L201061
RCP2-1100
PARADISE
DATACOM
RCP2-1100
1:1 REDUNDANT
SYSTEM CONTROLLER
Figure 4-2: Indoor/Outdoor Components, 1:1 Redundant System