5
power is shut off using the PWR button and the DC supply is then disconnected and re-
connected, the PA will likewise remain in the OFF state.
If PIN E on the DC input power connector is tied to GROUND (auto start configuration) and the
DC power is disconnected and re-connected, the amplifier will automatically power ON into the
last operational mode. This feature is useful in installations where the front panel is not
accessible and DC power is controlled remotely.
1.3.4 MODE OF OPERATION INDICATORS.
There are ten front panel LED's used to indicate the different modes of operation and power
amplifier operational status. Table 2-1 describes the LED indicators for the different modes of
operation and Table 2-2 describes the different power levels that are available for each mode of
operation.
1.3.4.1 SATCOM MODE INDICATOR (SAT).
The SAT LED will illuminate whenever one of two SATCOM modes is selected (SAT LNA
ON, SAT LNA OFF).
1.3.4.2 LOW NOISE AMPLIFIER MODE INDICATOR (LNA).
The LNA LED will illuminate whenever the SATCOM/LNA ON mode is selected (SAT LNA
ON). When in SAT mode, pressing the SAT button will toggle the LNA on and off.
1.3.4.3 WIDEBAND MODE INDICATOR (WB).
The WB LED will illuminate whenever one of two WB modes is selected (WB Single Frequency
and WB Frequency Hopping). Scrolling through the LOS menu (pressing the LOS button) will
cycle the user to the WB modes.
These modes are only available on the TCR-MBA-50 WB.
1.3.4.4 LINE OF SIGHT MODE INDICATOR (LOS).
The LOS LED will illuminate whenever one of four LOS modes is selected (LOS FM, LOS FM
Frequency Hopping, LOS AM, LOS AM Frequency Hopping).