W: Difference between revisions
No edit summary |
mNo edit summary |
||
| Line 18: | Line 18: | ||
Its bandwidth varies from 23 MHz to 8 MHz depending on gain. Only modestly | Its bandwidth varies from 23 MHz to 8 MHz depending on gain. Only modestly | ||
faster than its [[Z|Type Z]] predecessor, Type W extends performance in | faster than its [[Z|Type Z]] predecessor, Type W extends performance in | ||
terms of sensitivity, reaching 1 mV/div. | terms of sensitivity, reaching 1 mV/div, and achieves 20,000 to 1 common-mode | ||
rejection at DC and low frequencies. | |||
Type W has two signal inputs, "A" and "B", and a built in precision variable voltage supply, "V<sub>C</sub>", | |||
which is controlled by a ten-turn pot and can vary from either −1.1 V to +1.1 V or −11 V to +11 V. | |||
which is controlled by a ten-turn pot and can vary from either | A mode switch selects between displaying A−V<sub>C</sub>, A−B, or V<sub>C</sub>−B. | ||
The "A−B" mode is particularly useful for displaying the current in a sense resistor, | |||
A mode switch selects between displaying | |||
The " | |||
while the other modes provide "slideback" measurements of small variations superimposed on a large constant. | while the other modes provide "slideback" measurements of small variations superimposed on a large constant. | ||
An output of V<sub>C</sub> is provided on the front panel for precision measurements. | |||
Unlike the Type Z, Type W has two gain axes, a decade attenuator and a 1−2−5−10−20−50 selector, | |||
Type W has two gain axes, a decade attenuator and a | |||
reminiscent of [[D|Type D]] from ten years before. | reminiscent of [[D|Type D]] from ten years before. | ||
Revision as of 03:11, 2 January 2021
Template:Plugin Sidebar 2 The Tektronix Type W is a differential comparator plug-in amplifier for 500-series scopes. Its bandwidth varies from 23 MHz to 8 MHz depending on gain. Only modestly faster than its Type Z predecessor, Type W extends performance in terms of sensitivity, reaching 1 mV/div, and achieves 20,000 to 1 common-mode rejection at DC and low frequencies.
Type W has two signal inputs, "A" and "B", and a built in precision variable voltage supply, "VC", which is controlled by a ten-turn pot and can vary from either −1.1 V to +1.1 V or −11 V to +11 V. 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 for precision measurements.
Unlike the Type Z, Type W has two gain axes, a decade attenuator and a 1−2−5−10−20−50 selector, reminiscent of Type D from ten years before.
Type W is the only letter-series plug-in with an "infinite resistance" input mode selectable at the front panel. (Type 1A5 has an internal jumper that can be cut.)
In the letter-series timeline of differential comparators, Type W, introduced in 1965, follows Type Z and precedes Type 1A5.
Specifications
please add
Pictures
-
Front view.
-
Top-left view.
-
Bottom view.
-
Block Diagram
-
Differential Comparator
-
Input Attenuators
-
Switching Diagram
-
A-phase (prototype) Type W
-
A-phase (prototype) Type W
-
A-phase (prototype) Type W
-
A-phase (prototype) Type W
-
A-phase (prototype) Type W
