Z: Difference between revisions
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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. | ||
The Type Z uses [[turret attenuators]]. | |||
With a pair of "Disconnect Signal" buttons, the Type Z was the first of the movement toward a "Gnd" | With a pair of "Disconnect Signal" buttons, the Type Z was the first of the movement toward a "Gnd" | ||
Revision as of 15:41, 1 January 2012
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.
The 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. The Type Z uses turret attenuators.
With a pair of "Disconnect Signal" buttons, the Type Z was the first of the movement toward a "Gnd" position on the input switches.
The Type Z was introduced in 1960 and uses both tubes and transistors, capitalizing on the strengths of each. It was dropped after 1968.
The Type P6023 probe, introduced in 1962 with R and C compensation, was specifically designed for the Type Z but also marketed for the Type G.