Cant use GPIB communicate with UF190 prober

[fexphen]

Hello

I try to send some GPIB commands according to the reference: UF200 GPIB MANUAL.

such as "J" command:

It needs the carriage return and line feed followed, so I send the command as "J\r\n".

The result is the prober wont take that command. (Its GPIB history log recorded there is a command recieved but cant tell what the command is.)

Also,I tried to read the status bytes from prober, sending with "*STB?" command.

Looks like the prober didn't support this command, because I try to read back the status bytes and it timed out.

I attached the manual file here, is my command format wrong?

[Dennis_Knutson]

Are you positive you are actually sending the control codes and not the characters '\' and 'r'? Your string control/constant has to be set for '\' Code Display.

[fexphen]

Yes, I am pretty sure that the \n & \r are commands, not strings.

The command I use is :

sprintf(ts,"J\r\n");

ibwrt(machine_name, ts, strlen(ts));

While I use printf check the ts, its output is only "J" not "J\r\n"

[jerryhuprober]

Hi , i also have a question : when i use GPIB to connect with my UF200 PROBE , My NI MAX can not find sucessful about my UF 200 PROBE , 

Could you share with me how do you sucessed to connect your UF190 PROBE WITH GPIB ?

Thanks