Sigma 1200 Manual
Sigma 1200 Plus Wireless Computer Instructions Sigma 1200 Plus Bike Computer Manual Integrating Bluetooth with a Amateur Radio.
Instructions were not very clear, but I found an excellent video on YouTube that made installation easy. Another video showed step-by-step instructions for the computer to set the clock, wheel size, language, etc. Took the bike out and the computer never registered that the bike was moving. Trip distance remained at 00.00. I brought the bike in to Dick's to see if they could troubleshoot the problem.
Sigma 1200 Instructions Manual
The only guy in the bike department knew very little about wireless computers and couldn't help. My last hope was that the battery in the transmitter was dead. Took it to a battery shop which showed it was fine.
Was totally fed up and returned it to Dick's. Instructions were not very clear, but I found an excellent video on YouTube that made installation easy. Another video showed step-by-step instructions for the computer to set the clock, wheel size, language, etc. Took the bike out and the computer never registered that the bike was moving. Trip distance remained at 00.00. I brought the bike in to Dick's to see if they could troubleshoot the problem.
The only guy in the bike department knew very little about wireless computers and couldn't help. My last hope was that the battery in the transmitter was dead. Took it to a battery shop which showed it was fine.
Was totally fed up and returned it to Dick's. Purchased this unit to keep track of my rides, and was shocked after the first night when it said I had gone much further and faster than I had calculated with GPS during the day. The chart for my tire size says to plug in the value of 2070 for my wheel size, which is the correct number ( 26' X 25.4 X 3.14 = 2073mm ). So, I'm getting a reading that is higher by a factor of 1.67. In other words, if I'm going 10mph, the unit shows me going 16.7mph. If I ride for 1 mile it shows I rode for 1.67 miles.
I ended up mapping out the route I took on GPS again, calculated the correct distance, and reverse engineered the correct wheel size value. And it came to 1239. When I put this number into the computer, it came out measuring my speed and distance correctly, within.1% of my GPS value. At first I was thinking I had it in km.hour mode but it's showing output in mph, not km/hr. I find this very odd, since there are 1.6 kilometers in a mile, so the numbers are very close if it was in the wrong mode.
The output when I set the mode is at 'M'. Purchased this unit to keep track of my rides, and was shocked after the first night when it said I had gone much further and faster than I had calculated with GPS during the day.
The chart for my tire size says to plug in the value of 2070 for my wheel size, which is the correct number ( 26' X 25.4 X 3.14 = 2073mm ). So, I'm getting a reading that is higher by a factor of 1.67. In other words, if I'm going 10mph, the unit shows me going 16.7mph. If I ride for 1 mile it shows I rode for 1.67 miles. I ended up mapping out the route I took on GPS again, calculated the correct distance, and reverse engineered the correct wheel size value. And it came to 1239. When I put this number into the computer, it came out measuring my speed and distance correctly, within.1% of my GPS value.
At first I was thinking I had it in km.hour mode but it's showing output in mph, not km/hr. I find this very odd, since there are 1.6 kilometers in a mile, so the numbers are very close if it was in the wrong mode. The output when I set the mode is at 'M'.