7250: Difference between revisions
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{{Oscilloscope Sidebar| | {{Oscilloscope Sidebar | ||
|manufacturer=Tektronix | |||
image=7250_front.jpg | | |series= | ||
caption=Tektronix 7250 aka Intertechnique IN7000 | | |model=7250 | ||
introduced= | |summary=6 GHz Transient Digitizer | ||
discontinued=1992(?) | | |image=7250_front.jpg | ||
|caption=Tektronix 7250 aka Intertechnique IN7000 | |||
manuals= | |introduced=1986 | ||
* [ | |discontinued=1992(?) | ||
* [ | |designers= | ||
* [ | |manuals= | ||
* [ | * [[Media:070-6401-01.pdf|Tektronix 7250 Operators Manual]] | ||
* [[Media:070-7133-00.pdf|Tektronix 7250 Service Manual]] | |||
* [[Media:Tek 7250 schem no ocr.pdf|Tektronix 7250 Schematics]] | |||
* [https://w140.com/tektronix_7250.pdf Tektronix 7250 Catalog Entry] | |||
* [[Patent US 4147988A|US Patent 4,147,988 Describing the Technology Used in the 7250]] | |||
* [https://w140.com/7250_2008.06.09.10.37.12_5125_EN.zip Basic Code for GPIB Access to 7250] | |||
}} | }} | ||
The '''Tektronix 7250''' is a digitizing oscilloscope with 6 GHz bandwidth, optimized for digitizing single-shot events. | The '''Tektronix 7250''' is a digitizing oscilloscope with 6 GHz bandwidth, optimized for digitizing single-shot events. | ||
It uses a [[scan converter]] CRT for digitizing. From the scan converter, | It uses a [[scan converter]] CRT for digitizing. From the scan converter, the trace is transferred to memory boards containing conventional RAM. | ||
the trace is transferred to memory boards conventional RAM. | |||
The input is through a 50 Ω [[N connector]] on the rear panel, which loops through, | The input is through a 50 Ω [[N connector]] on the rear panel, which loops through, | ||
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<gallery> | <gallery> | ||
Tek 7250 trace.jpg | Trace | |||
Tek 7250 menu.jpg | Menu | |||
7250_front.jpg | Front | 7250_front.jpg | Front | ||
7250_front_inside.jpg | Front inside | 7250_front_inside.jpg | Front inside | ||
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</gallery> | </gallery> | ||
==Components== | |||
{{Parts|7250}} | |||
[[Category:Digital storage scopes]] | [[Category:Digital storage scopes]] | ||
[[Category:Scan converter based instruments]] | |||
[[Category:Micro-channel plate CRTs]] | |||
[[Category:GPIB interface]] | [[Category:GPIB interface]] | ||
Latest revision as of 05:12, 15 July 2024
The Tektronix 7250 is a digitizing oscilloscope with 6 GHz bandwidth, optimized for digitizing single-shot events. It uses a scan converter CRT for digitizing. From the scan converter, the trace is transferred to memory boards containing conventional RAM.
The input is through a 50 Ω N connector on the rear panel, which loops through, rather than being terminated internally. Like in the 519, there is no vertical amplifier.
The captured waveform can be transferred to a computer via a GPIB interface or can be viewed on the built-in monitor, which is a conventional computer-style CRT display and has menus.
At 60 kg (132 pounds), it is the heaviest one-piece oscilloscope ever sold by Tektronix. It was made by Intertechnique in France where it was sold as the IN7000, and rebranded by Tektronix for sale in the United States.
Key Specifications
| — 7250 mainframe — | |
| Bandwidth | 6 GHz (measured as -3 dB @ 7 GHz, -6 dB @ 9.6 GHz, and -8.5 dB @ 14 GHz in Haas, Warman, van Ewijk, Rev. Sci. Instrum. 60 (3), March 1989) |
| Rise time | 50 ps |
| Resolution | Vertical, 11 bits. The digitizer captures 512 samples in one shot. |
| Sweep | 1 μs/Div to 50 ps/Div (1-2-5), equivalent to max. ~1 terasample per second |
| Sensitivity | fixed 500 mV/Div (no vertical amplifiers in the signal path) |
| Max. input | 2 kV spikes < 1 μs |
| Triggering | External only, requires 50 ns pretrigger signal |
| — 7250 Opt. 01 External Delay Line — | |
| Bandwidth | 4.5 GHz |
| Rise time | ≤75 ps |
| Delay | 55 ns |
| Attenuation | 4.5 dB |
| Input / output | 50 Ω N connectors |
| Trigger pickoff | 20 dB attenuation, 300 ps rise time, BNC connector |
Links
- Tektronix 7250 advertising video, 1987 (VintageTEK Museum @ YouTube)
Prices
| Year | 1988 | 1990 | |
|---|---|---|---|
| 7250 | Catalog price | $99,995 | $104,000 |
| 2016 value | $204,000 | $192,000 | |
| Opt. 01 Ext. Delay Line | Catalog price | $12,500 | $12,500 |
| 2016 value | $25,500 | $23,000 |
Issues
The 7250 has two 3.6 V ½AA lithium batteries on each memory board. With time, these batteries die, which will cause the 7250 to fail its power-on self test. New replacements are still (2011) widely available.
Pictures
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Trace
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Menu
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Front
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Front inside
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Rear
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Rear inside
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Memory board
