Products > Test Equipment
E36300 Series Programmable DC Power Supplies (E36311A, E36312A, E36313A)
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apblog:
I have one that was sent back and repaired by the dealer shortly before I bought it.  It's fine.

If you hook up a scope and power it on, you might a small/short transient, but we're talking about nanoseconds and a volt or two.  Some people here figured out that it the post-fix transient we were seeing was being conducted through the AC and (at least mostly) wasn't real.  I buy that explanation.

I am very comfortable leaving my expensive prototypes hooked up to this supply.   

It does draw current when turned off though.  I keep mine on a power strip.
rsjsouza:

--- Quote from: apblog on May 12, 2019, 12:50:20 am ---It does draw current when turned off though.  I keep mine on a power strip.

--- End quote ---
Yes, one of the remaining biggest annoyances to me is the backlight that never seems to be turned off (something also confirmed by another user early on this thread as well).

I initially thought that was the illumination of the standby LED, but the light is too uniform and different in color.
bitseeker:
Who designs these things? >:D
apblog:

--- Quote from: bitseeker on May 13, 2019, 12:18:48 am ---Who designs these things? >:D

--- End quote ---

I have wondered if the embedded portions of this supply were designed by inexperienced engineers.

The fact that you can't press two channel buttons at once, to simultaneously turn on or off multiple channels, is somewhat annoying. 

And when you press two buttons at once, the unit still beeps.

Clearly the beeper is tied to the physical button press and is not an actual acknowledgement of something happening, as it should be.

The multi-press thing is either poor programming or the front panel keyboard is just a resistor for each button, all being sensed by the same a/d line.

And the initial, now fixed, problems with encoder data entry were really beneath a company like Keysight.

On the whole though, I am very happy with this supply.
apblog:
But while I'm complaining, let's not forget about the logging features.

The logging stops when you fill up the small memory buffer; you can't just stream your log to a file on the USB stick.

And it would be immensely useful to show the chart of voltage/current data at all times, so you can just glance at it while testing your firmware or when there has been some kind of failure.  But the chart stops when the log stops.

What would really great is if it logged to a circular buffer, and you could press a button that would dump the last X seconds to an incrementally numbered file on a usb stick.

The above  features are just firmware changes.  And they would add a ton of value to the unit.
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