User Manual Part 2

Theory of Operation 8-3MTX5000 User and Technical Manual
Control of the local/remote mode of operation can only be
controlled from the IDU. You cannot change the local/remote
operating mode from the remote location.
For more information on remote operation, see “Using the
MTX5000 in Remote Mode” on page 3-60.
8.2.6 ODU RF Output
The MTX5000 communicates with the ODU to set operating
frequencies and power levels. A 70 MHz IF signal is up-
converted to the RF band of operation. Before up conversion, a
digital attenuator adjusts the signal output power based on
calibration data and user input.
8.2.7 MTX5000 Internal Software
The MTX5000 internal software package consists of an
embedded controller software package.
For additional information on user interface through use of the
front panel color LCD display screen with touch screen and
function keys, see the “Routine Operation” Chapter on page 3-1.