Agilent E3631A DC power supply Measurement problem

[Makoto]

The E3631 operation manual says:

>>

It is very important that you send the SYSTem:REMote command to
place the power supply in the remote mode. Sending or receiving data
over the RS-232 interface when not configured for remote operation can
cause unpredictable results.

<<

[olkhov]

>>It is very important that you send the SYSTem:REMote command to

I also noticed that Rmt indication did not show up when the instrument is initialized,

so I added syst:rem to the init procedure. I do see Rmy indication on the instrument's display.

Now I am wondering how setting VoltageLevel works without syst:rmt? It does work - I see it.

But back to Measure()  - now instead of "not allowed in local mode" I am getting these errors:

Error 511: RS-232 framing error

Error -410: Query interrupted

from the instrument, and this from VISA:

IO timeout error: VISA error = Timeout expired before operation completed

The code is attachement. Starting form line 156 there are a few lines (in the if (true) clause)

to work around the problem, but I really would like to do it 'normal' way - by calling Measure()

[olkhov]

I have just tried Agilent's driver i.s.o. generic Ivi.DCPwr driver - the errors are a bit different:

Error -222: data out of range

Error 511: RS-232 framing error

Error -410: Query interrupted

from the instrument, and the same from VISA:

IO timeout error: VISA error = Timeout expired before operation completed

A bit improved code is attachement.