Bird Brain 4391A Benutzerhandbuch

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with the nominal power range of the elements. For example, 

if the forward element is a 5 watt element, the switches are 

set at 5 and x1. For a 250 watt element they are set at 2.5 

and x100. Sometimes it is necessary to use milliwatts or 

kilowatts as the unit of measure. In other words, 1 watt 

becomes 10 x 100 milliwatts and 2500 watts becomes 2.5 x 1 

kilowatts.