647A: Difference between revisions

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The [[11B2A]] is similar to the [[11B2]] dual time base, but triggers up to 100 MHz.   
The [[11B2A]] is similar to the [[11B2]] dual time base, but triggers up to 100 MHz.   
In addition, Tek introduced the [[10A1]] differential amplifier.   
In addition, Tek introduced the [[10A1]] differential amplifier.   
It operates down to 1 mV/div sensitivity, and includes a comparison voltage mode with a calibrated DC offset  
It operates down to 1 mV/div sensitivity, and includes a comparison voltage mode with a calibrated DC offset similar to that first offered in the [[W|type W]] plug-in.   
similar to that first offered in the [[W|type W]] plug-in.   
The maximum bandwidth of the 10A1 is 55 MHz for sensitivities of 5 mV/div and higher.
The maximum bandwidth of the 10A1 is 55 MHz for sensitivities of 5 mV/div and higher.


In total, only 4 plug-ins were developed for the 647 series – the generic dual trace vertical,  
In total, only 4 plug-ins were developed for the 647 series – the generic dual trace vertical,  
a differential vertical, and a single and a dual time base.   
a differential vertical, and a single and a dual time base.   
Although it combined high performance with rugged reliability and compactness,  
Although it combined high performance with rugged reliability and compactness, the 647 series was one of Tek’s “orphan” scope series, a result of when it was introduced.   
the 647 series was one of Tek’s “orphan” scope series, a result of when it was introduced.   
By the time the 100 MHz 647A was announced, the majority of the R&D effort at Tek was devoted to the [[7000-series scopes|7000 series]], which introduced just two years later, in 1969.   
By the time the 100 MHz 647A was announced,  
the majority of the R&D effort at Tek was devoted to the [[7000-series scopes|7000 series]],  
which introduced just two years later, in 1969.   
The entry level 7000 series mainframe started with performance nearly the same as the top of the line 647A.   
The entry level 7000 series mainframe started with performance nearly the same as the top of the line 647A.   
With on-screen scale factor read-out, and even more compact form factor,  
With on-screen scale factor read-out, and even more compact form factor, 7000 would offer many advantages over any of Tek’s existing lines of scopes.   
7000 would offer many advantages over any of Tek’s existing lines of scopes.   
When the work on developing plug-ins for 7000 series was ramping up, no additional plug-ins for any of the “legacy” plug-in scopes would be developed.   
When the work on developing plug-ins for 7000 series was ramping up,  
no additional plug-ins for any of the “legacy” plug-in scopes would be developed.   
For the 530/540/550 series which started over 20 years earlier, a large family of plug-ins were available.   
For the 530/540/550 series which started over 20 years earlier, a large family of plug-ins were available.   
But for the orphan scopes which were introduced in the mid 1960s, the variety of plug-ins was very limited.
But for the orphan scopes which were introduced in the mid 1960s, the variety of plug-ins was very limited.


The [[067-0544-00]] is a calibration plug-in for the 647A.
The [[067-0544-00]] is a calibration plug-in for the 647A.


{{BeginSpecs}}
{{BeginSpecs}}

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