ACVS: Difference between revisions

323 bytes added ,  26 April 2018
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Tektronix 11000-series plug-ins contain a subsystem called the Analog Control Voltage System (ACVS).
Tektronix 11000-series plug-ins and mainframes contain a subsystem called the Analog Control Voltage System (ACVS).
The ACVS produces several independently controllable DC voltages.
The ACVS produces several independently controllable DC voltages.
The voltages are fed to the analog signal path circuitry (e.g., the OFFSET input of the [[M377]],
The voltages are fed to the analog signal path circuitry (e.g., the OFFSET input of the [[M377]],
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For example, the [[11A34]], which has four channels, has an ACVS that produces sixteen control voltages.
For example, the [[11A34]], which has four channels, has an ACVS that produces sixteen control voltages.


== AVCS in 11000-Series Plug-ins ==
The ACVS comprises three parts:
The ACVS comprises three parts:
* [[Media:AD667.pdf|AD667]] 12-bit DAC (single output)
* [[Media:AD667.pdf|AD667]] 12-bit DAC (single output)
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Tektronix 11A52 main amp & control schematic.JPG|ACVS sample and hold schematic in the [[11A52]]
Tektronix 11A52 main amp & control schematic.JPG|ACVS sample and hold schematic in the [[11A52]]
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== ACVS in 11000-Series Mainframes ==
In the 11300 mainframes, the ACVS is controlled by an 8051-family microcontroller.
It employs a [[Media:DAC312.pdf|DAC312]] 12-bit DAC, whose output is fed to an array of sample-and-hold circuits similar to the ones in the plug-ins.