[Dx4win] Help on PSK31

[G0ORH@aol.com]

I'm having trouble getting my rig to TX. I have a FT1000MP, I  have G3LIV, 
ISOTERM-RL  interface made for the MP as it needs a DIL relay for TX. 
There a 4 leads attached, 1 lead to LINE IN, 1 lead to LINE OUT on the sound 
board, the other end has a 5 pin connector which I connected to the packet 
socket on the rear of the MP. The other connector is a com port connector. 
Dx4win is run through com 1, I have connected the ISOTERM RL interface unit 
to com 2.
QUESTION, Have I to assign com 2, or is it detected by dx4win software!!!

I have adjusted the rx slider's for copy on rx. RX copy is good.
When I try to TX, (front panel PKT  selected)  dx4win 6.02 hangs and I get a 
message 
saying  'an exception occurred" Invalid floating point operation. What does 
this mean!!!

Any help would be great.

Ken...G0ORH


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