Watlow F4 GPIB USB HS communication problem

Hello,

I am trying to communicate with the Watlow F4 controller on a Tenney Enviornmental Chamber. The only port available is a GPIB port. I successfully installed the GPIB-USB-HS cable and I can see that device under MAX devices and interfaces. However, no instrument is found when scanning for instruments at defaults GPIB interface settings. I have also downloaded the Watlow F4 VI drivers and try to run from there. I got an Error-1073807346 occurred at VISA open in Watlow F4.lvlib:Initialize.vi-> Watlow F4 System set up.vi

I am using Labview 8.5.1 with 488.2, VISA, DAQmx installed.

Please see attached pictures for details. Any suggestions would be greatly appreciated.

Regards

Fliu