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The "A-B" mode is particularly useful for displaying the current in a sense resistor, | The "A-B" mode is particularly useful for displaying the current in a sense resistor, | ||
while the other modes provide "slideback" measurements of small variations superimposed on a large constant. | while the other modes provide "slideback" measurements of small variations superimposed on a large constant. | ||
An output of Vc is provided on the front panel of the Type W. Unlike the | An output of Vc is provided on the front panel of the Type W. Unlike the [[Z|Type Z]], | ||
Type W has two gain axes, a decade attenuator and a 1-2-5-10-20-50 selector, | Type W has two gain axes, a decade attenuator and a 1-2-5-10-20-50 selector, | ||
reminiscent of | reminiscent of [[D|Type D]] from ten years before. | ||
Type W is the only letter-series plug-in with an "infinite resistance" input mode selectable at the front panel. | Type W is the only letter-series plug-in with an "infinite resistance" input mode selectable at the front panel. | ||
(Type [[1A5]] has an internal jumper that can be cut.) | (Type [[1A5]] has an internal jumper that can be cut.) | ||
In the letter-series timeline of differential amps, the Type W, [[introduced in 1965]], | In the letter-series timeline of differential amps, the Type W, [[introduced in 1965]], | ||
follows the Type [[Z]] and precedes | follows the Type [[Z]] and precedes [[1A5|Type 1A5]]. | ||
Types W and [[O]] were "in at the finish", available right up to the discontinuance of the entire classic plug-in scope line in 1974. | Types W and [[O]] were "in at the finish", available right up to the discontinuance of the entire classic plug-in scope line in 1974. | ||