*IDN? works in VISA test panel but VI does not

[RTSLVU]

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@ben64 wrote:

Have you tried using VISA Open before the VISA Write?

Ben64

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Yes and it returns the same error on the VISA Write.

But the VISA Open does not return an error.

[ben64]

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I can see a couple differences, the main one being the VISA test panel DOES NOT USE VISA?

1-viWrite and 2-viRead are the VISA test panel, 4-VISA Write my VI and that is where the error occurs. 

viWrite and viWrite are the C syntax call of VISA Write and VISA Read

There is a couple subtle differences 

1.  viWrite (TCPIP0::LCRY0614N49625::... (0x028B4920), "*IDN?.", 6, 6)
3. viParseRsrc (0x12B19590, "TCPIP0::LCRY061...5::inst0::INSTR", 6, 0)

4. VISA Write ("TCPIP0::LCRY061...5::inst0::INSTR", "*IDN?.")

I still don't know what to make of this.

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1. viWrite, the first 6 is the number of bytes to be written, the second 6 is the number of bytes transferred

3. The first 6 is the interface type (6: TCPIP) and the 0 is the id of the instrument connected to the interface: inst0

Now, I can't see why you are getting the error. I don't think it is necessary to concatenate \n after *IDN? but it should'nt cause any error adding it.

Ben64

[RTSLVU]

I can get it to work if I install LeCroy's "VICP Passort" and place the scope remote control in VICP mode instead of LXI.

I am guessing this instrument was never really LXI compatible.

This becomes a real P.I.T.A. for me now because it meant I have to install VICP on all the various target machines. And I have to train people on how to set it up and use it because using VICP the scope does not not show up in NI-MAX like it did in LXI mode.