[TenTec] OMNI VI&PC control problem

["Sergei Kulyov"]

Dear OMNI VI users:

need your advise on following. I've got the OMNI VI radio (563 model) with option 3 installed. The logic EPROM label says: Model 564, 98369
Version 1.02-150 (Logic). The problem is  - I can not communicate via the interface DB25 port. Was trying couple programs: DX4WIN and TRX manager. No luck. 

Is there any tips which can be usefull to solve the problem?

Thanks in advance

73, Sergei UA3AP

Moscow