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7T11: Difference between revisions
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title=Tektronix 7T11| | title=Tektronix 7T11| | ||
summary=Sampling Sweep Unit| | summary=Sampling Sweep Unit| | ||
image= | image=7t11-crop.jpg | | ||
caption=Tektronix 7T11 sampling sweep unit | | caption=Tektronix 7T11 sampling sweep unit | | ||
years=?| | years=?| | ||
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It was specially designed to build a [[sampling oscilloscope]] configuration together with the [[7S11]] including one of the sampling heads. The fastest sweep is 10ps/div and lowest jitter is 10ps, depending on actual settings. | It was specially designed to build a [[sampling oscilloscope]] configuration together with the [[7S11]] including one of the sampling heads. The fastest sweep is 10ps/div and lowest jitter is 10ps, depending on actual settings. | ||
Trigger bandwidth is | Trigger bandwidth is 500 MHz from internal and 1 GHz from external trigger sources. | ||
Additionally there is an internal | Additionally, there is an internal 200 MHz oscillator with analog trigger count down, | ||
which can be synchronized from external signals up to | which can be synchronized from external signals up to 14 GHz. | ||
Due its sampling principle (so called undersampling) | Due its sampling principle (so called undersampling), the 7T11 can only be used on | ||
repetitive signals and samples are always taken from signal portions delayed | repetitive signals and samples are always taken from signal portions delayed | ||
from the trigger event. This delay is adjustable on the front panel to select | from the trigger event. This delay is adjustable on the front panel to select | ||
the portion of interest. At the three lowest sweep ranges the 7T11 changes | the portion of interest. At the three lowest sweep ranges, the 7T11 changes | ||
from | from undersampling to real-time sampling. | ||
Due the high bandwidth of the sampling heads, there is no Y-delay-line in the heads, | Due the high bandwidth of the sampling heads, there is no Y-delay-line in the heads, | ||
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a periodic signal with low jitter, a [[random sampling]] mode can be used so that the signal triggered on can be observed. In this case, an internal PLL locks to the signal and generates an internal pre-trigger. | a periodic signal with low jitter, a [[random sampling]] mode can be used so that the signal triggered on can be observed. In this case, an internal PLL locks to the signal and generates an internal pre-trigger. | ||
If only bandwidths of up to | If only bandwidths of up to 3 GHz are needed, single events can be observed directly be using the [[7M11]] analog delay line plug-in. ''(This statement should be clarified. It seems to imply that a single event can be plotted using a 7T11.)'' | ||
7T11.'' | |||
Manual or external sweep is possible to connect a slow pen plotter. | Manual or external sweep is possible to connect a slow pen plotter. | ||
Because the 7T11 and 7S11 have direct interconnections side by side, they work also in slow mainframes. The 7T11 supports up to two 7S11 and allows also | Because the 7T11 and 7S11 have direct interconnections side by side, they work also in slow mainframes. The 7T11 supports up to two 7S11 and allows also X–Y operation up to 14 GHz if one 7S11 resides in the A-horizontal slot. | ||
The 7T11 uses a [[BSM connector]] for pulse output on the front panel. | The 7T11 uses a [[BSM connector]] for pulse output on the front panel. | ||
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<gallery> | <gallery> | ||
Image:Tek 7t11.jpg | |||
Image:7T11.jpg | Image:7T11.jpg | ||
Image:7T11_right.jpg|Right view | Image:7T11_right.jpg|Right view | ||