647A: Difference between revisions

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647A (view source)

Revision as of 04:23, 1 November 2023

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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.   
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.   


In total, only 6 plug-ins were developed for the 647 series – the generic dual trace vertical [[10A2]] and [[10A2A]] amplifiers,  
In total, only six plug-ins were developed for the 647 series – the generic dual trace vertical [[10A2]] and [[10A2A]] amplifiers,  
a differential comparator vertical [[10A1]] amplifier, and a single [[11B1]] and dual [[11B2]] and [[11B2A]] time bases.   
a differential comparator vertical [[10A1]] amplifier, and a single [[11B1]] and dual [[11B2]] and [[11B2A]] time bases.   
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.   
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.   
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, 7000 would offer many advantages over any of Tek’s existing lines of scopes.   
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.   
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 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}}
{{Spec | Bandwidth | DC to 100 MHz (≤ 3 dB) with [[10A2A|Type 10A2A plug-in]]  }}
{{Spec | Bandwidth             | DC to 100 MHz (≤ 3 dB) with [[10A2A|10A2A plug-in]]  }}
{{Spec | Rise time | 3.5 ns }}
{{Spec | Rise time             | 3.5 ns }}
{{Spec | Acceleration voltage | 14 kV}}
{{Spec | CRT                  | 6 cm × 10 cm, 14 kV acceleration }}
{{Spec | Screen Area | 6 cm × 10 cm}}
{{Spec | Power                 | 108/115/122/216/235/244 V<sub>AC</sub> ±10%,selected via primary voltage selector and voltage range selector switches, 50 Hz to 60 Hz; 185W with [[10A2]] & [[11B2]]  plug-in }}
{{Spec | Power | 108/115/122/216/235/244 V<sub>AC</sub> ±10%,selected via primary voltage selector and voltage range selector switches, 50 Hz to 60 Hz; 185W with [[10A2]] & [[11B2]]  plug-in }}
{{Spec | Operating Temperature | –30 C° to +65 C°}}
{{Spec | Operating Temperature | –30 C° to +65 C°}}
{{Spec | Cooling               | AC Fan (only in rack variant) }}
{{Spec | Cooling | AC Fan (only in rack variant) }}
{{Spec | Thermal Protection   | Automatic resetting thermal cutout, in case internal temperature exceeds safe operating level }}
{{Spec | Thermal Protection | Automatic resetting thermal cutout, in case internal temperature exceeds safe operating level }}
{{Spec | Weight                | 18.4 kg (40.5 lbs) }}
{{Spec | Construction  | Aluminum alloy chassis. Anodized front panel}}
{{Spec | Weight| 40.5 lbs / 18.4 kg }}
 
{{EndSpecs}}
{{EndSpecs}}


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