TandemGeek

This is a link to something I posted in response to a similar question:
http://www.bikeforums.net/showpost.p...40&postcount=4

In short, you can do as much or as little with the data as you like or have the patience for.

Me, I use the Hactronic S/W to "suck" the data out of the watch and save it to a working file on my hard drive. Double-clicking on any of the "records" that appear in the first data table that comes up once the HAC4 completes downloading will open the record and provide you with several different tabs that reflect different views of the data: Graphic is a histrogram that plots anywhere from one to all of the data in the record; you toggle the individual features on and off with the software. Analysis is a series of tables that reflect the maximum values and averages. There are some others but I don't recall them off hand (doing this from memory). Anyway, from the expanded view you can save the record as a .tur file for call up later if you like. Bear in mind, the HAC4 will continue to build up records that remain stored in the watch until ~64 hours worth of data are collected, after which the oldest records will begin to drop off. Therefore, if you do an annual event that you would like to recall in the future, you would be wise to safe that record as a .tur file. It's also worthwhile to note that you can go into the datafile view and clear-out any data points from your ride where you took breaks, etc... so as not to have that factored into some of the calculations that you intend to store in your working file or use in the other programs. Note: you will find that each program and the watch don't always agree on the data since each program uses different logic and/or processes the data differently. Again, I haven't take too much time to over analyze the data since it's meeting my basic needs, e.g., measuring performance improvements against a known baseline for HRM, ave speeds, etc. Virtual power; never use it.

OK, next comes the Ciclotrainer S/W. This is basically a training diary. You can also suck the data off the HAC4 with this program or you can import the data from a saved copy of the downloaded data, i.e., my so-called "working file". Each time you select the "Import Data" from a source file or the computer every record will show up in a pop-up menu with a check box next to it. You merely go to the end of the list and select the files that aren't already stored in your Ciclotrainer data file. You can create annotations for each of the diary entries during this process, e.g., was it ridden on a Road Bike, Off-Road, your Tandem, was it a running event, etc... You can also plug in your weight, resting heart rate, and other information that you want to keep track of in your training diary that could relate to your recorded performance. As with the Hactronic S/W, there are a variety of ways that you can look at each file; single day's effort, specific or *** metrics by week, month, or annual, etc... It keeps a running tally of your mileage, vertical gain, average HR in zone, weight, etc... at the bottom of the diary.

Finally, there is the CicloTour which provides you with even more functionality. I've played with this but haven't truly mastered how it works as I basically get what I need from the quick look at the Hactronic data and the diary.

In practice, I only download the HAC4 about once a week unless I'm interested in checking out my performance on a epic ride of some sort (not too many of those these days). It's a quick dump to the Hactronic S/W where I save my working file and then into the Ciclotrainer S/W to import the new data that keeps my training log up to date. I don't bother to add much data to the training log except to identify which type of bike/ride the data was recorded on, e.g., single road, tandem road, fixed-gear road, single off-road, or tandem off-road. For off-road, while I initially would move over the speed sensor and change the wheel size setting, I've since decided it's just easier to use a separate SigmaSports computer to collect the mileage data and then input those numbers along with ave. speed, and time into the Ciclotrainer diary with the HRM and other data that comes off the HAC4 worn as a wristwatch. You can also just create manual diary entries for rides where you leave the HAC4 at home if you want to be really anal about logging your mileage.

Anyway, just one users view. I'm really happy with the CicloSport products and my HAC4. My wife has a Polar S720i which is also a good product with a steep learning curve.