Z: Difference between revisions
Vintage dave (talk | contribs) (specs and history) |
Vintage dave (talk | contribs) (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.