067-0508-00: Difference between revisions
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==Manuals== | ==Manuals== | ||
* [http://w140.com/tek_067_0508_00.pdf Tektronix 067-0508-00 Manual (PDF)] | * [http://w140.com/tek_067_0508_00.pdf Tektronix 067-0508-00 Manual (PDF)] | ||
* [[Media:Tek 067-0508-00 schematics.pdf|Tektronix 067-0508 Schematics (PDF)]] | |||
==Pictures== | ==Pictures== | ||
Revision as of 12:13, 22 July 2018
The Tektronix 067-0508-00 Amplitude Calibrator generates a square-wave with two precisely controlled voltages and 50 Ω impedance at both voltages.
This could be achieved by a 50 Ω resistor in series with the output of an amplifier with 0 Ω output resistance (e.g., an opamp with plenty of negative feedback). But that is not how Tektronix did it. They used a 50 Ω shunt resistance at the output, and a precision DC current source that can be steered toward the output or toward a dummy current sink transistor. The built-in multivibrator controls the steering of the current.
The output is through a GR-874 connector. The 067-0515-00 precision 50 Ω terminator is intended to be used with the 067-0508-00.
