Would some kind soul post a sample EZGPIB program

[rob.manderson]

that logs multiple readings from an HP 3456?  Just logging to the console window will be fine.

The further I get into my GPIB code the more confusing it gets.  I can see the individual bytes go by on the GPIB Analyser and sometimes they appear on the USB data stream.  So it's obviously something in my code but since I'm never quite sure exactly what EZGPIB is doing it makes sense to me to ask for a sample that someone else knows works correctly within that environment.

How embarassing!    I do .NET code for a living!

[guido]

Hi,

I am using this with a Prologix USB adapter:

Code: [Select]

Program HP3456A;
   
Const Device  = 6;                                                              // GPIB address
         Timeout = 5;                                                             // timeout
         
Var   Answer:string;                                                           
             
begin;                                                                                // main   
  EZGPIB_BusEnableEoi;                                                     // enable EOI
  EZGPIB_BusSetEos(0);                                                     // Append CR+LF to instrument commands; MODE 4
  EZGPIB_ScreenClear;

  repeat
    EZGPIB_BusWaitForData(Device,Answer,Timeout);          // Wait for data
    EZGPIB_ScreenWriteLn(Answer);                                   // Write data to screen
  until ezgpib_kbdKeyPressed;
 
  EZGPIB_ScreenWriteLn('End');       
end.

Warning, i do not write code for a living 

[rob.manderson]

Thanks.  Now I'll have something that lets me blame my own code! 

[edpalmer42]

Were the HP3457 example files no help?

Ed

[rob.manderson]

I gave them a try but the command language to the meter itself is quite different so it was difficult to figure out what was being sent to trigger a reply.  Though now you say it I wonder I didn't think to download a manual and actually (gasp) read it to see what means what to the 3457.

[z01z]

What GPIB adapter do you have?

[rob.manderson]

Home developed - based on Emanuelle Girlando's code but with extensions (control of buffer chips etc).  Hence the confusion.  Is the problem in my extensions, or in the base code, or something else.  The plan, once it's working as a basic controller, is to add spoll functionality etc.