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New entry-level R&S NGE100 Power Supply Series

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Rich@RohdeScopesUSA:
Hi Folks - just a quick update to this:

We're making a couple changes to the NGE's firmware based on Gearbuilder's feedback (should be released before September):

1.  The team had erred on the conservative side for the DIO pins and how they were enabled after recalling settings.  They were thinking of applications when a customer may not always check DIO or the channels' wiring when they play with the trigger settings or recalling totally different DIO settings from memory.  With that said, we've decided to implement a solution where the NGE will store the settings as they used to, but we're adding a button to activate all four Digital I/Os to make that simpler/faster.  I think Gearbuilder will have a beta soon for that.

2.  With respect to the current on the IO lines, there currently is a small amount of current flowing even if the port is not used. While this theoretically shouldn't be an issue, we understand the concern, so we're going to modify the firmware to eliminate this.  This will also be in the updated firmware currently expected before September.

-Rich


thanasisk:
Hi,

Have the problems in the current limiting and overshooting and not working digital IO been resolved in the new NGE103B (presently bundled as NGE-COM3a)?




Rich@RohdeScopesUSA:

--- Quote from: thanasisk on March 10, 2020, 10:10:21 am ---Hi,

Have the problems in the current limiting and overshooting and not working digital IO been resolved in the new NGE103B (presently bundled as NGE-COM3a)?

--- End quote ---
Yes, those are fixed.  There is also a new firmware coming out soon (1.54) with additional updates/fixes.  As soon as I have those I'll update here as well.

-Rich

goaty:
Just got the NGE103 running, nice compact unit, seems to work.

Besides the price, there are two design choices I really don´t understand:

- Why does the three channel model not also display the statistics like the two channel model ?
I do not need it, but seems to me like a really strange decision

- The tracking function is really a joke. I thought it links channels together 'permanently', but all it does
is let you modify the voltage and current momentarily. As you leave the setting and enter it again,
the tracking is not selected anymore.
I really wish R&S would improve that and let you link 2 or 3 channels permanently, and then whenever you change
voltage, both setpoints change. (Also in live mode, you need to remember you want channels to be tracked, if not, you just modify the first that comes up )

Also, the response of the unit to serial connected channels does not seem to work in all cases.
When limiting current to 100mA, and going into overcurrent condition by a certain load,
suddenly one channel displayed and drove 3A. [IMG_0713]
(Edit: This seems to happen only if one does not follow the recommendation in manual to set all currents to same value)
Seems there is at least one more bug. (Got 1.54 here)

And another bug when pressing Track as can be seen in image:
The knob modifies current, but the button "Voltage" is illuminated. (IMG_0711)

Please R&S: If you really must produce such low-quality software, at least give us the complete sourcecode so we can improve.

Edit: There´s more that drives you crazy: You cannot enable Fuse on an currently disabled channel if the output is already switched on with one other channel enabled.
First disable output, then select fuse on the new channel, then enable output. But I want the output to stay on. Damn.

Oh, and it doesn´t remember the last set voltages as well. It always resets to one of the memory settings. Who has thought that out ? Almost killed my circuit with that "feature"

Greetings from Munich/Germany
Thomas


goaty:
Update: I swapped the NGE103 for a HMC8043 after not being too happy with the user interface of the NGE.
The HMC is more expensive, but the features and usability are much better. The options for interfaces and sensing all included, also same
features like fuse.
Only thing I wasn´t aware of is the reverse polarity protection, which is basically a diode across the terminals. Wasn´t aware of that. Be careful when connecting a battery for example, to connect it the right way around.

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