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549: Difference between revisions
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The Tektronix 549 is the only storage scope that takes a letter-series or 1-series vertical plug-in. | The Tektronix 549 is the only storage scope that takes a [[Letter-series_and_1-series_plug-ins|letter-series or 1-series vertical plug-in]]. | ||
It was [[introduced in 1966]] and discontinued in 1972. The vertical -3dB bandwidth is 30MHz. | It was [[introduced in 1966]] and discontinued in 1972. The vertical -3dB bandwidth is 30MHz. | ||
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the differential signal in the delay line rides on 167 volts of DC. | the differential signal in the delay line rides on 167 volts of DC. | ||
After the delay line, the signal enters another cascoded differential amplifier with | After the delay line, the signal enters another cascoded differential amplifier with | ||
NPN BJTs on the bottom and [[8608]] tubes on the top. The vertical deflection plates of the CRT are driven by the plates of a 8608 10-watt power pentode, through inductive matching/peaking networks. The 549 is unusual among 54x-series scopes in that it does not use a distributed vertical amplifier. | NPN BJTs on the bottom and [[8608]] tubes on the top. The vertical deflection plates of the CRT are driven by the plates of a 8608 10-watt power pentode, through inductive matching/peaking networks. The 549 is unusual among 54x-series scopes in that it does not use a [[distributed amplifier|distributed vertical amplifier]]. | ||
Triggering is done using an NPN BJT Schmitt trigger. | Triggering is done using an NPN BJT Schmitt trigger. | ||