Specifications

Operations Manual, Redundant System Controllers 209351 REV B 43
4.1.1.1 LNA/LNB Fault Tracking
To set up the RCP2-1100 for LNA/LNB fault tracking perform the following menu
selections. Press the Main Menu key; select 4.Flt. Setup and press the Enter key;
select 1.Mjr. Faults and press the Enter key; select 1.LNA/LNB and press the Enter
key. This puts the RCP2-1100 in LNA/LNB current monitor mode.
4.1.1.2 LNA / LNB Current Calibration
After the RCP2-1100 has been put in the LNA/LNB fault tracking mode, the LNA or
LNB nominal current should be calibrated by the controller. To perform the current
calibration, press the Main Menu key; select 6.Calibr and press the Enter key; select
3.Calibrate and press the Enter key. This calibrates the normal current consumption
of the LNA/LNBs.
To select the sensitivity of the alarm detection, select 1.Flt.Window and press the
Enter key. Select from four window settings which represent a percentage of the total
current being consumed by the LNA/LNB. The 8% setting is the most sensitive and
20% is the least sensitive. The factory default setting is 8%.
Note: Caution should be used when changing Fault Window settings from the factory
preset. Current variations will occur in equipment naturally as a result of changes in
operating temperature. Consideration should be given to environmental conditions
and, in particular, to operating temperature extremes.
Figure 4-3: Typical Schematic, 1:1 Redundant LNA System