LDG AT-100Pro, Operation Manual

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PAGE 11
To toggle between power display modes, press Func -> C Up (Peak) (Press and release Func , then
press and release C Up (Peak) ). Peak mode is indicated by a falling meter display, with the highest power
shown as a steady LED while the remaining LEDs fall back to zero. Average mode shows the same
display, but without the steady LED showing. Press
Func -> C Up (Peak) repeatedly to toggle between
Peak and Average modes.
Wattmeter Scale: The Power LED bargraph displays either 0 to 12.5 watts or 0 to 125 watts full
scale. To toggle between these two scales, press Func -> L Up (Scale) . The LED marked “10” or “100”
will light momentarily to indicate the newly selected scale. The factory default is 125 watt full scale.
Automatic Tuning Mode: The AT-100Pro may be set for either semi-automatic tuning or fully
automatic tuning. In semi-automatic tuning mode, a tuning cycle will not begin unless specifically
requested by pressing the
Tune button. In fully automatic tuning mode, a tuning cycle will begin any time
there is RF present and the SWR exceeds a pre-set level. The default setting is fully automatic tuning
mode.
To toggle between semi- and fully automatic modes, press Func -> C Dn (Auto) . The LED display
will show one of the two patterns to indicate which mode has been selected:
Automatic Tune SWR Threshold: When the AT-100Pro is in fully automatic tuning mode, an
automatic tuning cycle will begin any time RF is present and the SWR has exceeded a set threshold. This
threshold is user-programmable to any value between 1.1:1 and 3.5:1. To set the automatic tune SWR
threshold, press
Func -> L Dn (Thresh) repeatedly (press Func, then L Dn (Thresh); Func, then L Dn
(Thresh), and so on...) to cycle through all the options. The SWR threshold will be displayed on the SWR
scale momentarily.