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7000 series readout system/Repairs: Difference between revisions
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:'''Source:''' [https://www.amplifier.cd/Test_Equipment/Tektronix/Tektronix_7000_series_mainframe/rep-und-kal-7603/Reparaturbericht%20TEKTRONIX%207603.htm www.amplifier.cd repair report] (in German) | :'''Source:''' [https://www.amplifier.cd/Test_Equipment/Tektronix/Tektronix_7000_series_mainframe/rep-und-kal-7603/Reparaturbericht%20TEKTRONIX%207603.htm www.amplifier.cd repair report] (in German) | ||
==Display jitter== | |||
Vertical jitter of the readout characters is typically caused by under- or overshoot in the step response of the vertical amplifier. | |||
When the vertical amplifier is being overdriven (signals outside the graticule area), the effect is strongest, and largely unavoidable. | |||
It may be possible to reduce jitter under non-overdrive conditions by adjusting the vertical amplifier high-frequency compensation, see e.g. Table 4-3 in the [[Media:070-1260-00.pdf|7704A]] manual, page 4-11. | |||
For horizontal jitter, look for a horizontal amplifier thermal balance calibration step. | |||
[[Category:Instrument repair reports]] | [[Category:Instrument repair reports]] | ||