Difference between revisions of "Z"

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(specs and history)
(ten-turn pot, disconnect buttons)
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rejection at DC and low frequencies.  Its risetime as a general-purpose
 
rejection at DC and low frequencies.  Its risetime as a general-purpose
 
amplifier is 27ns (13MHz bandwidth), but it can track a common-mode risetime of 7ns.
 
amplifier is 27ns (13MHz bandwidth), but it can track a common-mode risetime of 7ns.
 +
 +
Type Z has two inputs, A and B, plus a precision comparison voltage, Vc, that is
 +
adjustable from 0 to +/-1V, 10V, or 100V via a ten-turn pot.  It's possible to
 +
view A, -B, A-B, A-Vc, or Vc-B.
  
 
Unlike later comparators, it has a separate step attenuator for each input,
 
Unlike later comparators, it has a separate step attenuator for each input,
 
permitting you to view the difference between signals of widely differing amplitudes.
 
permitting you to view the difference between signals of widely differing amplitudes.
 
It is also the only comparator that can handle +/- 100V common mode at full sensitivity.
 
It is also the only comparator that can handle +/- 100V common mode at full sensitivity.
 +
 +
With a pair of "Disconnect Signal" buttons, Type Z was the first movement toward a "Gnd"
 +
position on the input switches.
  
 
The Type [[P6023]] probe, with R and C compensation, was specifically designed for Type Z.
 
The Type [[P6023]] probe, with R and C compensation, was specifically designed for Type Z.

Revision as of 12:15, 21 September 2010

The Tektronix Type Z is a comparator plug-in for 500-series scopes. Its maximum sensitivity is 50mV/div, and it achieves 40,000 to 1 common-mode rejection at DC and low frequencies. Its risetime as a general-purpose amplifier is 27ns (13MHz bandwidth), but it can track a common-mode risetime of 7ns.

Type Z has two inputs, A and B, plus a precision comparison voltage, Vc, that is adjustable from 0 to +/-1V, 10V, or 100V via a ten-turn pot. It's possible to view A, -B, A-B, A-Vc, or Vc-B.

Unlike later comparators, it has a separate step attenuator for each input, permitting you to view the difference between signals of widely differing amplitudes. It is also the only comparator that can handle +/- 100V common mode at full sensitivity.

With a pair of "Disconnect Signal" buttons, Type Z was the first movement toward a "Gnd" position on the input switches.

The Type P6023 probe, with R and C compensation, was specifically designed for Type Z.

Type Z was introduced between 1960 and 1962 and uses both tubes and transistors, capitalizing on each's strengths.