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560 | The 560 series scopes which were introduced with the [[560]] and [[561]] in 1961 were tube scopes that began to introduce some solid state circuitry. | ||
They use [[2-series or 3-series vertical plug-ins]] and [[2-series or 3-series horizontal plug-ins]] (exception: [[560]] only takes 2-series because of weak power supply). | |||
560-series mainframes contain no amplifier stages, requiring the plug-ins to drive | |||
the CRT deflection plates directly. While promoted by Tek as having the advantage of | |||
“not limited by additional circuitry between the plug-in and the deflection plates”, | |||
this configuration has a significant disadvantage in that when swapping plug-ins, | |||
gain or sweep have to be calibrated. | |||
In scopes with amplifiers in the mainframe, touching up the gain or sweep cal when | |||
swapping plug-ins can be skipped, as doing so only tunes the accuracy to a small | |||
amount of additional precision. In the 560 series however, this step is required | |||
to even get crude accuracy, as the raw deflection factor of the CRT has a relatively | |||
large range, and the mainframe has no circuitry to normalize it. | |||
as doing so only tunes the accuracy to a small amount of additional precision. | |||
as the raw deflection factor of the CRT has a relatively large range, | |||
and the mainframe has no circuitry to normalize it. | |||
To maintain good phase match over a wide range of frequency, | To maintain good phase match over a wide range of frequency, | ||
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The faster vertical plug-ins contain the delay line, | The faster vertical plug-ins contain the delay line, | ||
which limits the available volume for amplifier circuitry. | which limits the available volume for amplifier circuitry. | ||
==560 series scopes== | |||
<gallery> | |||
Image:Tek 560 1.jpeg | [[560]] | |||
Image:Tek 561s.jpg | [[561]] | |||
Image:Tek 564b 1.JPG | [[564]] | |||
Image:Image needed.jpg | [[565]] | |||
Image:567 front.jpg | [[567]] - Sampling scope with digital readout | |||
Image:568 708p front.jpg | [[568]] | |||
</gallery> | |||
==560 series plugins== | |||
<gallery> | |||
Image:Tek 3a1s.jpg | [[3A1S]] - 25 MHz vertical amplifier | |||
Image:Tek 3a7 1.JPG | [[3A7]] - differential amplifier | |||
Image:Tek-3a74-front.jpg | [[3A74]] - four-channel vertical plug-in | |||
Image:3a9 front.jpg | [[3A9]] - 1 MHz differential amplifier | |||
Image:Tek 3b1s.jpg | [[3B1S]] - timebase plug-in | |||
Image:Tek 3l5 front.jpg | [[3L5]] - 1 MHz spectrum analyzer | |||
Image:3s1 front.jpg | [[3S1]] - dual-trace sampling plug-in | |||
Image:3s3 front.jpg | [[3S3]] - sampling plug-in | |||
Image:3s7 front.JPG | [[3S7]] - sampling plug-in | |||
Image:Tek 3s76 front.jpg | [[3S76]] - dual-trace sampling plug-in | |||
Image:3t7 front.JPG | [[3T7]] - sapmpling timebase and pulser | |||
</gallery> | |||
[[Category:560 series scopes]] |