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Operating Instructions
Getting to know your AT-1000Pro
Your AT-1000Pro is a quality, precision instrument that will give you many years of outstanding
service; take a few minutes to get to know it. On the front panel, there are eight pushbutton
switches:
•
Power: turns your AT-1000Pro on and off
•
Auto: toggles tuner between Auto and Semi-Auto tuning modes
•
Tune: begins a tuning cycle, places the tuner in bypass mode
•
Ant1: Toggles between the two antenna ports
•
Manual capacity and inductance adjustments (rarely needed)
•
Ind Up: adds inductance
•
Ind Dn: subtracts inductance
•
Cap Up: adds capacitance
•
Cap Dn: subtracts capacitance
The Power switch does not turn the tuner completely off. It places it in a low-current "sleep"
mode. In the Off mode (Power LED is off), the tuner is in bypass, routing RF directly from your
amplifier to the antenna with no matching. On power-up, the tuner automatically restores the last
tuned setting.
Each pushbutton has a dedicated LED that indicates that function's status. These LEDs are also
used to indicate other tuner conditions; see section on Button Functions and LED Indications.
In addition to the pushbuttons, there is a lighted cross-needle meter. This meter indicates forward
power up to 1,000 watts, reflected power up to 200 watts and SWR (see Theory of Operation,
below). Power readings are accurate to +/- 10% of full scale across the entire range.
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