BK9121 Driver Timeout read error

Question

Hi, I downloaded and installed the BK9121 driver from NI but when I tried to use the example code I get error -1073807339 occured at VISA Read in BK9121A.lvlib:Initialize.vi->BK9121A Output DC Volts.vi (HEX 0xBFFF0015, timeout expired before operation completed).
It seems to be related to wait for DSR which simply times out, *IDN? also times out. I did test the instrument with direct VISA (intitialize, write, read) and MAX Soft panel and they work but the driver from NI does not....what to do?

Answer 1

Are you SURE you actually sent a carriage return character on you VISA write?  We can't tell from your screenshot because if the Write string is in Normal display, you won't see the carriage return.  If it is in \code display like SMercurio said, it would show up as D\r.
In NI spy it would show up as 17.
VISA Write ("COM1", "D." ) Process ID : 0x00000144        Thread ID: 0x00000664 Start Time: 15:50:29.610      Call Duration 00:00:00.015    Status: 0 (VI_SUCCESS)
Notice D.  where the period represents an unprintable character.  If \r doesn't work, try \n
Message Edited by Ravens Fan on 10-28-2008 03:54 PM