The Hydrograph IDA4 + copyrighted software is available from your Fluke Biomedical service agent, it is not freeware, or freely available in the public domain.
The IDA4 + works fine without Hydrograph, I would dispute your assertion that "with out the software the efficacy of the unit is rather low"
Some things are free, and some things you have to pay for, (that's just the way it is).
