Z: Difference between revisions

Revision as of 03:16, 2 January 2021

Template:Plugin Sidebar 2 The Tektronix Type Z is a comparator plug-in for 500-series scopes. Its two main subsystems are a differential amplifier and a precision variable DC voltage source, which can be used as one of the amplifier inputs. This allows DC-coupled measurements of small signals with large DC offsets. Its maximum sensitivity is 50 mV/div, and it achieves 40,000 to 1 common-mode rejection at DC and low frequencies. Its risetime as a general-purpose amplifier is 27 ns (13 MHz bandwidth), but it can track a common-mode risetime of 7 ns.

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

Unlike later comparators, it has a separate step attenuator for each input, permitting the user to view the difference between signals of widely differing amplitudes. It is also the only comparator that can handle ±100 V common mode at full sensitivity. The Type Z uses two 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 with R and C compensation, introduced in 1962, was specifically designed for the Type Z but also marketed for the Type G.

Specifications

please add

Links

Type Z @ amplifier.cd

Pictures

Front View
Front View
Front View
Pre-production Type Z with different knob color
Left Side
Left Side
Right Side
Right Side
Right Side
Right Side Tubes
Top
Rear

Schematic

Attenuators
Main Amplifier

@@ Line 24: / Line 24: @@
 The Type Z has two inputs, A and B, plus a precision comparison voltage, V<sub>C</sub>, that is
-adjustable from 0 to +/-1 V, 10 V, or 100 V via a ten-turn pot.  It's possible to
+adjustable from 0 to ±1 V, 10 V, or 100 V via a ten-turn pot.  It's possible to
-view V<sub>A</sub>, -V<sub>B</sub>, V<sub>A</sub>-V<sub>B</sub>,
+view V<sub>A</sub>, −V<sub>B</sub>, V<sub>A</sub>−V<sub>B</sub>,
-V<sub>A</sub>-V<sub>C</sub>, or V<sub>C</sub>-V<sub>B</sub>.
+V<sub>A</sub>−V<sub>C</sub>, or V<sub>C</sub>−V<sub>B</sub>.
 Unlike later comparators, it has a separate step attenuator for each input,
 permitting the user to view the difference between signals of widely differing amplitudes.
-It is also the only comparator that can handle +/- 100 V common mode at full sensitivity.
+It is also the only comparator that can handle ±100 V common mode at full sensitivity.
 The Type Z uses two [[turret attenuators]].
@@ Line 39: / Line 39: @@
 capitalizing on the strengths of each.  It was dropped after 1968.
-The Type [[P6023]] probe, [[introduced in 1962]] with R and C compensation,
+The Type [[P6023]] probe with R and C compensation, [[introduced in 1962]],
 was specifically designed for the Type Z but also marketed for the Type [[G]].