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.
|— 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 —|
|Rise time||≤75 ps|
|Input / output||50 Ω N connectors|
|Trigger pickoff||20 dB attenuation, 300 ps rise time, BNC connector|
- Tektronix 7250 advertising video, 1987 (VintageTEK Museum @ YouTube)
|Opt. 01 Ext. Delay Line||Catalog price||$12,500||$12,500|
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.