067-0508-00: Difference between revisions
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|class=Signal generator | |class=Signal generator | ||
|series= | |series= | ||
|summary=Amplitude | |summary=Amplitude Calibrator | ||
|image=Tek 067-0508-00 3.jpg | |image=Tek 067-0508-00 3.jpg | ||
|caption=Tektronix 067-0508-00 | |caption=Tektronix 067-0508-00 | ||
Revision as of 19:48, 15 November 2023
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.
Pictures
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067-0508-00 with 284 pulse generator
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