40,406
edits
7250: Difference between revisions
Jump to navigation
Jump to search
+cat GPIB
No edit summary |
(+cat GPIB) |
||
| Line 1: | Line 1: | ||
The Tektronix 7250 is an digitizing oscilloscope with | The Tektronix 7250 is an digitizing oscilloscope with 6 GHz bandwidth. | ||
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 conventional RAM. | the trace is transferred to memory boards conventional RAM. | ||
The input is through a 50 Ω [[Connectors#N|N connector]] on the rear panel, which loops through, | |||
The input is through a | |||
rather than being terminated internally. The captured waveform can be transferred | rather than being terminated internally. The captured waveform can be transferred | ||
to a computer via | 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. | conventional computer-style CRT display and has menus. | ||
At 132 pounds, it is the heaviest one-piece oscilloscope ever sold by Tektronix. | At 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 | It was made by Intertechnique in France where it was sold as the IN7000, and | ||
rebranded by Tektronix for sale in the United States. | rebranded by Tektronix for sale in the United States. | ||
Frequency response of a 7250 has been measured as - | ==Specifications== | ||
[[Category:Specifications needed]] | |||
Frequency response of a 7250 has been measured as -3 dB @ 7 GHz, -6 dB @ 9.6 GHz, and -8.5 dB @ 14 GHz. | |||
(Haas, Warman, van Ewijk, Rev. Sci. Instrum. 60 (3), March 1989) | (Haas, Warman, van Ewijk, Rev. Sci. Instrum. 60 (3), March 1989) | ||
The 7250 has two 3. | Vertical resolution is 11 bits. The digitizer captures 512 samples in one shot. | ||
The fastest sweep is 50 ps/Div, approximately 1 terasample per second. Sensitivity is 500 mV/Div. | |||
Due to the absence of vertical amplifiers in the signal path, the 7250 can handle | |||
2 kV spikes without damage. | |||
==Issues== | |||
The 7250 has two 3.6 V 1/2AA 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 | batteries die, which will cause the 7250 to fail its power-on self test. New replacements | ||
are still (2011) widely available. | are still (2011) widely available. | ||
==Manuals== | |||
* [http://w140.com/tek_7250.pdf Tektronix 7250 Manual (PDF)] | * [http://w140.com/tek_7250.pdf Tektronix 7250 Manual (PDF)] | ||
* [http://w140.com/tektronix_7250.pdf Tektronix 7250 Catalog Entry (PDF)] | * [http://w140.com/tektronix_7250.pdf Tektronix 7250 Catalog Entry (PDF)] | ||
* [http://w140.com/US4147988.pdf US Patent 4147988 Describing the Technology Used in the 7250 (PDF)] | * [http://w140.com/US4147988.pdf US Patent 4147988 Describing the Technology Used in the 7250 (PDF)] | ||
* [http://w140.com/7250_2008.06.09.10.37.12_5125_EN.zip Basic Code for GPIB Access to 7250] | * [http://w140.com/7250_2008.06.09.10.37.12_5125_EN.zip Basic Code for GPIB Access to 7250] | ||
==Pictures== | |||
<gallery> | <gallery> | ||
| Line 35: | Line 44: | ||
Image:7250 memory.JPG|Memory board. | Image:7250 memory.JPG|Memory board. | ||
</gallery> | </gallery> | ||
[[Category:GPIB interface]] | |||