timeout for visa read

[adeline]

hello,
i am doing a voltage increment using labview and PS325 device, from 200V and 10V increment. Everything works fine at first from 200V to 500V. However, there is always a timeout at VISA read, as soon as the voltage reaches 560V. Why is it so? How can i resolve this? Are there any errors that i missed out?
Thanks for your kind help.

[alipio]

Hi Adeline

It sounds like there is a mechanical change at that voltage, so answer is delayed. Try to increase the Visa timeout value to allow more time to read back data.

Hope it helps
Alipio

[adeline]

Hi Alipio,
i couldn't find the place to alter VISA timeout value. Do you mean the Wait for RQS.vi, which is placed between VISA write and VISA read? However, Wait for RQS also does not seem quite right,as i am not trying to ask for service request events.
Puzzled,
student

[alipio]

Hi Adeline
To change visa timeout ( and other properties) do as follows:
1. In your diagram, go to functios palette/application contol and put a property node after open visa session.
2.- wire visa reference to this property node
3.- right click on it and search for timeout
4.- richt click on timeout an select write
5.- wire a value (in mS) to it until you do not get timeout error.
Browse throug visa properties. You will find some very interesting

Cheers
Alipio