This is how I would assess probabilities as well. I am trying to keep an open mind, and look at the evidence. Yes, the schematic for EA seems to match EA if you ignore the second channel and mismatch of the numbering of designators. There is a DAC and 4-way multiplexer with precision caps for sample-and-hold and TL buffers: voltage ref, current limit ref, overvoltage protection ref and one more ref, which is used as some sort of an adjustable base line for the other three.
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All models deliver clean power, dependable regulation, fast transient response and built-in GPIB and RS interfaces. Steady Output With 0. Low normal mode noise assures clean power for precision circuitry applications, and the low common mode current provides isolation from power line current injection. The user manual provides information for beginning programmers, yet includes enough detail to help veteran programmers as well. Front Panel Operation An easy-to-use rotary knob and self-guiding keypads allow you to quickly and easily set output at the resolution you need.
Up to five complete power supply setups can be stored and recalled from the internal non-volatile memory. Dual output models allow two voltages or currents to be displayed simultaneously.
Versatile Power Keysight ExA power supplies give you the flexibility to select from dual output ranges. Output load is protected against overvoltage, which is easily monitored and adjusted from the front panel and remote interface. Remote sensing is available in the rear terminal to eliminate errors due to voltage drops on the load leads. These power supplies offer new versatile binding posts on the front panel and screw-type terminals on the rear panel.
New front panel binding posts allow you to use safety test leads as well as conventional banana clips and stripped wires. An optional rackmount kit is available. The Keysight ExA series employs a cooling fan with automatic speed control for reduced acoustic noise. Includes users guide, quick reference guide and AC power cord. Three year warranty.
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Keysight E3640A Power-Supply 30 W