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The Tektronix 7250 is an digitizing oscilloscope with a 6GHz bandwidth.   
{{Oscilloscope Sidebar
It uses a scan converter CRT for digitizing.  From the scan converter,
|manufacturer=Tektronix
the trace is transferred to memory boards conventional RAM.
|series=
The vertical resolution is 11 bits.
|model=7250
The digitizer captures 512 samples in one shot.
|summary=6 GHz Transient Digitizer
The fastest sweep is 50ps/division, approximately 1 terasample per second.
|image=7250_front.jpg 
The sensitivity is 500mV/division.
|caption=Tektronix 7250 aka Intertechnique IN7000
Due to the absence of vertical amplifiers in the signal path, the 7250 can handle
|introduced=1986     
2kV spikes without damage. 
|discontinued=1992(?) 
The input is through a 50-ohm N connector on the rear panel, which loops through,
|designers=
rather than being terminated internally. 
|manuals=
At 132 pounds, it is the heaviest one-piece oscilloscope ever sold by Tektronix.
* [[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.   
It uses a [[scan converter]] CRT for digitizing.  From the scan converter, the trace is transferred to memory boards containing conventional RAM.


Frequency response of a 7250 has been measured as -3db@7GHz, -6dB@9.6GHz, and -8.5dB@14GHz.
The input is through a 50 Ω [[N connector]] on the rear panel, which loops through,
(Haas, Warman, van Ewijk, Rev. Sci. Instrum. 60 (3), March 1989)
rather than being terminated internally. Like in the [[519]], there is no vertical amplifier.


http://w140.com/tektronix_7250.pdf
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.
 
{{BeginSpecs}}
{{SpecGroup | 7250 mainframe }}
{{Spec | 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) }}
{{Spec | Rise time | 50 ps }}
{{Spec | Resolution | Vertical, 11 bits. The digitizer captures 512 samples in one shot. }}
{{Spec | Sweep | 1 μs/Div to 50 ps/Div (1-2-5), equivalent to max. ~1 terasample per second }}
{{Spec | Sensitivity | fixed 500 mV/Div (no vertical amplifiers in the signal path) }}
{{Spec | Max. input | 2 kV spikes < 1 μs }}
{{Spec | Triggering | External only, requires 50 ns pretrigger signal }}
 
{{SpecGroup | 7250 Opt. 01 External Delay Line }}
{{Spec | Bandwidth  | 4.5 GHz  }}
{{Spec | Rise time  | ≤75 ps }}
{{Spec | Delay      | 55 ns }}
{{Spec | Attenuation | 4.5 dB }}
{{Spec | Input / output | 50 Ω N connectors }}
{{Spec | Trigger pickoff | 20 dB attenuation, 300 ps rise time, [[BNC connector]] }}
{{EndSpecs}}
 
==Links==
* [https://www.youtube.com/watch?v=fS6WOx5X8zM Tektronix 7250 advertising video, 1987] (VintageTEK Museum @ YouTube)
 
==Prices==
{| class="wikitable"
|-
! &nbsp;
! Year
! 1988
! 1990
|-
!rowspan=2| 7250
! Catalog price
|align=right| $99,995
|align=right| $104,000
|-
! 2016 value
|align=right| $204,000
|align=right| $192,000
|-
!rowspan=2| Opt. 01 Ext. Delay Line
! Catalog price
|align=right| $12,500
|align=right| $12,500
|-
! 2016 value
|align=right| $25,500
|align=right| $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==


<gallery>
<gallery>
Image:7250_front.jpg|Front.
7250_front.jpg       | Front
Image:7250_front_inside.jpg|Front inside.
7250_front_inside.jpg | Front inside
Image:7250_rear_panel.jpg|Rear.
7250_rear_panel.jpg   | Rear
Image:7250_rear_inside.jpg|Rear inside.
7250_rear_inside.jpg | Rear inside
Image:7250 memory.JPG|Memory board.
7250 memory.JPG       | Memory board
</gallery>
</gallery>
[[Category:Digital storage scopes]]
[[Category:Scan converter based instruments]]
[[Category:Micro-channel plate CRTs]]
[[Category:GPIB interface]]
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