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The Type W is a plug-in amplifier for [[500-series scopes]].  Has a built in precision variable voltage supply, "Vc".   
The Type W is a plug-in amplifier for [[500-series scopes]].  Its bandwidth varies from 23MHz to 8MHz
depending on gain.  It achieves 20,000 to 1 common-mode rejection at DC and low frequencies.
It has a built in precision variable voltage supply, "Vc".   
The Type W has two signal inputs, "A" and "B".  A mode switch selects between displaying A-Vc, A-B, or Vc-B.   
The Type W has two signal inputs, "A" and "B".  A mode switch selects between displaying A-Vc, A-B, or Vc-B.   
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,  

Revision as of 19:10, 17 September 2010

The Type W is a plug-in amplifier for 500-series scopes. Its bandwidth varies from 23MHz to 8MHz depending on gain. It achieves 20,000 to 1 common-mode rejection at DC and low frequencies. It has a built in precision variable voltage supply, "Vc". The Type W has two signal inputs, "A" and "B". A mode switch selects between displaying A-Vc, A-B, or Vc-B. 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. An output of Vc is provided on the front panel of the Type W.

In the letter-series timeline of differential amps, the W, introduced in 1965, follows the Z and precedes the 1A5.