Trigger VI for the Ágilent 34972A Instrumnet

[harjeemann]

Greetings Reader,

         I am making my application with agilent 34972A Daa acquisition unit and found that Trigger VI is not working while i configure trigger to the external and have joined my RS 232 port to the external trigger. do some one have idea how to use external trigger for scan in this instrument. I have also changed an example given by NI, can any one confirm is there some thing i am doing wrong here. I am also attaching the Changed VI

[Dennis_Knutson]

Don't understand at all your comment about 'joined my RS-232 port to the external trigger'. You've connected one of the lines of an unused serial port to the trigger input? Which line and how are you controlling it?

[harjeemann]

The agilent module is programable over USB and the RS232 plug is used to give external sinals and to read the alarms given by the device.

[Dennis_Knutson]

Well, I know that there is a DB9 connector on the back and one of the pins is the external trigger but that has nothing to do with RS-232 and the serial port on your pc. You have it connected to DSR which is not a ttl signal.

[harjeemann · Accepted solution]

GOT THE SOLUTION, I have not to use wait for trigger VI instead I am now read data in while loop, because when trig is get it reads and the string is not empty