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== ACVS in 11000-Series Mainframes == | == ACVS in 11000-Series Mainframes == | ||
In the 11300 mainframes, the ACVS is controlled by an 8051-family microcontroller. | 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. | It employs a [[Media:DAC312.pdf|DAC312]] 12-bit DAC, | ||
whose output is fed to an array of 28 sample-and-hold circuits similar to the ones in the plug-ins. | |||
A refresh cycle sequentially refreshes the voltage on each of the sample-and-hold capacitors. | |||
The time to complete the entire refresh cycle is 900 μs. | |||