ilrd timeout error

[MathewM]

JDSU is similar to JGR instruments all the commands of JGR are except the call "A05E" specific for selecting relative reference etc.. which is not affecting our ilrd call , also "?" part  it will also show same result  when i read the "valuestr" it shows P0.0 db 1335 1 ||||||||||||||||||||||

any way afteer reading its shows timeout error

[Dennis_Knutson]

JDSU is the name of the manufacturer (http://www.jdsu.com/index.html) correct? They make a lot of instruments. What is the particular model number?

Nor can you randomly place a '?' where ever you want.

[MathewM]

Hi Dennis

                Please checkthis link,this guy also have the same problem

http://forums.ni.com/ni/board/message?board.id=140&thread.id=578

regards

mathewm

[MathewM]

HI dennis

                    Machine name:JDS Uniphase  RX3 MULTI CHANNEL BACK REFLECTION METER

                   ModelNumber : RX 3070 -2I

Hopethis will help u

regards

mathew m

[Dennis_Knutson]

What I was hoping was that JDSU had improved their web site since the last time I used one of their instruments. I couldn't find an on-line manual before and I still can't. I wanted to look at the commands you are sending to see whether they actually returned something to the GPIB read buffer of the instrument. If you are able to sometimes read, then that indicates to me that there is nothing wrong with the basic communication. It' just that you are trying to do a read when the instrument has not been commanded to return anything.

If you have access to an electronic copy of the manual or can provide a link, I'll be happy to look at it.

[MathewM]

Dear Dennis

                          A  "BREAKTHROUGH"  had happened when we connect the machine with Com port communication , ie with out GPIB interface and it was fast and succesfull.So naturally we decided start with RS232 communcation now and i am thinking whether the DLL was the real cause

thanks and regards for your efforts

mathew m