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067-0587-02: Difference between revisions
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The '''Tektronix 067-0587-02''' is a signal standardizer (calibration) plug-in for [[7000-series scopes]]. | The '''Tektronix 067-0587-02''' is a signal standardizer (calibration) plug-in for [[7000-series scopes]]. | ||
It is a complete redesign of the [[067-0587-01]] standardizer. It provides a calibrated staircase at 1 line/Div in Gain mode, a fast-rising pulse in Step Resp mode, an input for a CW signal to test bandwidth, and an input for a common mode test signal. | It is a complete redesign of the [[067-0587-01]] standardizer. It provides a calibrated staircase at 1 line/Div in Gain mode, a fast-rising pulse in Step Resp mode, an input for a CW signal to test bandwidth, and an input for a common mode test signal. The 067-0587-02 was designed by [[Art Metz]]. | ||
{{BeginSpecs}} | {{BeginSpecs}} | ||
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==Internals== | ==Internals== | ||
Internal signals are derived from a 1 MHz oscillator with selectable decade divisions down to 10 Hz repetition. | |||
The clock is delayed, amplified and limited, then fed to a Schittky-diode based pulse shaper with L-C compensating networks. The output pulse has a rise time of max. 150 picoseconds with less than 2% aberrations. | |||
The staircase generator for Gain mode is implemented using a 4 bit count and multiplexer. The 0-volt step (No. 6) is held for five counts, producing a brighter trace to allow easy alignment wit the center of the screen. | |||
For bandwidth measurements, there is a leveler circuit with a differential diode detector controlling an amplifier's gain in an AGC loop. | |||
The 067-0587-02 is based on a number of Tektronix custom ICs from the 1 GHz [[7104]] scope generation, such as the [[155-0160-00|155-0160-00 trigger amplifier + source select chip]] and the [[155-0175-00|155-0175-00 trigger amplifier chip]]. | The 067-0587-02 is based on a number of Tektronix custom ICs from the 1 GHz [[7104]] scope generation, such as the [[155-0160-00|155-0160-00 trigger amplifier + source select chip]] and the [[155-0175-00|155-0175-00 trigger amplifier chip]]. | ||
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==Links== | ==Links== | ||
* [http://amplifier.cd/Test_Equipment/Tektronix/Tektronix_7000_series_special/calibration-fixture.htm 067-0587-02 | * [http://amplifier.cd/Test_Equipment/Tektronix/Tektronix_7000_series_special/calibration-fixture.htm 067-0587-02 @ amplifier.cd] (comparing -01 and -02, lots of pictures, text in German) | ||
* TekScope Vol 11 No. 1, 1979, p.14. | |||
==Pictures== | ==Pictures== | ||