LDG AT-200PC - Operation; Auto and Semi-Auto Modes; Memory Tuning

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Operation
All tuner functions are controlled through the PC interface. The details of the interface vary
among software products; see your software's documentation for details. Details of the simple
LDG-provided software are below.
Auto and Semi-Auto Modes
In Auto mode the tuner will begin a tuning cycle whenever the SWR exceeds the value you set
(see section on setting autotune threshold in the PC interface). In Semi mode a tuning cycle
begins only when you start one by pressing the Tune button on the PC interface, regardless of
SWR. You can also start a Semi tuning cycle while the tuner is in Auto mode. Your personal
operating practices will determine which mode is best for you.
Auto mode tuning works well while you are transmitting in SSB, AM, CW or any digital mode.
Recent advances in LDG's tuning algorithms allow your AT-200PC to tune effectively even with
a varying RF signal. This means that as you change frequencies, antennas or bands, you don't
have to make a separate tuning transmission; just start talking and your AT-200PC will match up
in as little as 0.2 seconds.
Memory Tuning
Your AT-200PC has frequency memories for four antennas on each antenna port. They store the
tuning parameters for each frequency as you tune. You can use a wide variety of antennas,
connecting them to the two antenna ports as needed. Think of it; you could be using a Yagi,
Quad, Loop or Vee on the Ant A port, and a Dipole, Vertical, Longwire or J-Pole on the Ant B
port, connecting them as needed (or switching them through an external coax switch), and each of
them will have dedicated memories. When you transmit on or near a memorized frequency again,
the tuner finds the best match for that port and antenna and sets those parameters in a fraction of a
second, much faster than a full tuning cycle. This will work best if you always use a particular
antenna on the same antenna port each time.
When you tune, you can select between a Memory tune and a Full tune. If you select Memory
tune and there is no appropriate memory data, the tuner will automatically begin a full tuning
cycle. Tuning parameters are stored in EEPROM memory, and are retained indefinitely, even if
power is removed.