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560-series scopes: Difference between revisions
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The 560 series | The 560 series of mainframes includes the [[560]], [[506]], [[561]], [[564]], [[565]], [[567]], and [[568]]. | ||
They were introduced with the [[560]] and [[561]] in 1961. | |||
These seven oscilloscope mainframes have the following in common: | These seven oscilloscope mainframes have the following in common: | ||
* They accept [[560-series plug-ins]] (the 567 additionally accepts the [[6R1]] or [[6R1A]] plug-ins) | * They accept [[560-series plug-ins]] (the 567 additionally accepts the [[6R1]] or [[6R1A]] plug-ins) | ||
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* They don't use post-deflection acceleration of the CRT beam | * They don't use post-deflection acceleration of the CRT beam | ||
* They were introduced between 1961 and 1967 | * They were introduced between 1961 and 1967 | ||
* They don't contain a vertical [[delay line]] (some plug-ins, e.g., the [[3A6]] have built-in delay lines) | * They don't contain a vertical [[delay line]] (some plug-ins, e.g., the [[3A6]] have built-in delay lines so the rising edge of fast pulses with low repetition rate can be seen) | ||
[[560-series plug-ins]] includes the 2-series models (e.g., the [[2A60]] and [[2B67]]) | |||
and the 3-series models (e.g., the [[3A1]] and [[3B3]]) | and the later, more power-hungry 3-series models (e.g., the [[3A1]] and [[3B3]]). | ||
The 3-series plug-ins consume more power than the power supply in the 560 and 561 can deliver, | |||
The 3-series plug-ins consume more power than the power supply in the 560 and 561 can deliver | The [[560]] and [[561]] are only for use with 2-series plug-ins; | ||
The [[560]] and [[561]] are only for use with 2-series plug-ins. | 3-series plug-ins consume more power than the 560 and 561 can supply. | ||
When the 561A replaced the original 561, one of the benefits it brought was a power supply capable of meeting the current demands | When the 561A replaced the original 561, one of the benefits it brought was | ||
of 3-series plug-ins. | a power supply capable of meeting the current demands of 3-series plug-ins. | ||
Having the vertical and horizontal deflection amplifiers in the plug-ins rather than in the mainframe has pros and cons. | Having the vertical and horizontal deflection amplifiers in the plug-ins rather than in the mainframe has pros and cons. | ||
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Pro: | Pro: | ||
* Lower cost for an entry-level configuration. No need for expensive high-speed amplifiers anywhere in the system. | * Lower cost for an entry-level configuration. No need for expensive high-speed amplifiers anywhere in the system. | ||
* Bandwidth can be upgraded later by adding faster plug-ins. | * Bandwidth can be upgraded later by adding faster plug-ins. | ||
* Replacing plug-ins has a high likelihood of fixing problems, unless there is a problem in the power supply or CRT. | * Replacing plug-ins has a high likelihood of fixing problems, unless there is a problem in the power supply or CRT. | ||
* A small number of mainframe models can support a wide range of applications. | |||
Con: | Con: | ||
* The signal path of the plug-in to mainframe interface is not as well standardized as it is on [[500-series scopes]] or [[7000-series scopes]]. This is primarily due to variability in deflection sensitivity of CRTs | * Checking calibration after changing plug-ins is recommended. The signal path of the plug-in to mainframe interface is not as well standardized as it is on [[500-series scopes]] or [[7000-series scopes]]. This is primarily due to variability in deflection sensitivity of CRTs. | ||
* Since each plug-in contains deflection amplifiers, | * Since each plug-in contains deflection amplifiers, 560-series plug-ins cost more than a plug-in with equivalent functionality for a mainframe that has built-in deflection amplifiers. The cost of the deflection amplifiers adds up if the customer wants several different plug-ins at the high-speed end of the 560-series range. | ||
Early 560-series mainframes (e.g., the [[561]]) had tubes in the low voltage power supply and in the high voltage power supply. | |||
Later scopes in the series (e.g., the [[561|561B]] and [[568]]) were all solid state except for the CRT. | |||
<gallery widths="150" heights="180"> | <gallery widths="150" heights="180"> | ||