36,756
edits
11A71: Difference between revisions
no edit summary
No edit summary |
No edit summary |
||
| Line 1: | Line 1: | ||
{{Plugin Sidebar | {{Plugin Sidebar | ||
|manufacturer=Tektronix | |||
summary=Single channel 1 GHz amplifier | | |series=11000-series scopes | ||
image=11a71-ext.jpg | | |type=11A71 | ||
caption=Tek 11A71 | |summary=Single channel 1 GHz amplifier | ||
|image=11a71-ext.jpg | |||
introduced=1987 | | |caption=Tek 11A71 | ||
discontinued=(?) | | |introduced=1987 | ||
manuals= | |discontinued=(?) | ||
|designers= | |||
|manuals= | |||
* [http://w140.com/tek_11a71_service.pdf Tektronix 11A71 Service Manual (PDF)] | * [http://w140.com/tek_11a71_service.pdf Tektronix 11A71 Service Manual (PDF)] | ||
* [[Media:Tek 11A71 schematics.pdf|Tektronix 11A71 Schematics]] | * [[Media:Tek 11A71 schematics.pdf|Tektronix 11A71 Schematics]] | ||
| Line 14: | Line 16: | ||
The '''Tektronix 11A71''' a single-channel 1 GHz amplifier for 11000-series scopes. | The '''Tektronix 11A71''' a single-channel 1 GHz amplifier for 11000-series scopes. | ||
The 11A71 is derived from the [[7A29]]. | The 11A71 is derived from the [[7A29]]. However, the 7A29 has a VARIABLE gain control while the 11A71 does not, it has only the 1-2-5 gain sequence. | ||
However, the 7A29 has a VARIABLE gain control while the 11A71 does not, it has only the 1-2-5 gain sequence. | |||
The 7A29 and 11A71 have virtually the same analog circuitry including a Gilbert multiplier at the front end, | The 7A29 and 11A71 have virtually the same analog circuitry including a Gilbert multiplier at the front end, but in the 11A71 it is only used for automatic calibration, not for fine gain control. | ||
but in the 11A71 it is only used for automatic calibration, not for fine gain control. | |||
This is feature regression, but it avoids an issue that the 7A29 has, namely that its bandwidth changes substantially with the setting of the front panel VARIABLE VOLTS/DIV control. | This is feature regression, but it avoids an issue that the 7A29 has, namely that its bandwidth changes substantially with the setting of the front panel VARIABLE VOLTS/DIV control. | ||
After calibration, there is a small imbalance in the 10 mV/div setting, about 0.05 div. | After calibration, there is a small imbalance in the 10 mV/div setting, about 0.05 div. This is a design flaw. | ||
This is a design flaw. | |||
{{BeginSpecs}} | {{BeginSpecs}} | ||
| Line 31: | Line 30: | ||
{{Spec | Input impedance | 50 Ω via a [[Tekprobe BNC connector]] on the front on the plug-in}} | {{Spec | Input impedance | 50 Ω via a [[Tekprobe BNC connector]] on the front on the plug-in}} | ||
{{Spec | Features | | {{Spec | Features | | ||
*Input 5 V<sub>RMS</sub> overload protected with manual reset | * Input 5 V<sub>RMS</sub> overload protected with manual reset | ||
}} | }} | ||
{{EndSpecs}} | {{EndSpecs}} | ||