The PM4 was designed to communicate directly with other PM4's so that up to 8 participants can race each other without using a PC. Once configured, you can use any one of the PM4's to set up a race, have others join, and race.
- Maximum of 8 participants
- No team racing, only time or distance races
- No display for the 'Audience' like with Venue racing software on the PC.
The PM4 supports two modes of racing - wired (cables required) and wireless.
For wired, PC-Less racing, you need to obtain 14-15 foot (3m) 'Network' or 'Ethernet' cables with RJ45 plugs on the end. These cables are readily available from your local computer or office supply store. Do NOT get 'Crossover' cables, they will not work (crossover cables are used for direct computer to computer connections without a hub/switch in between and are usually specially marked). Indoor Sport Services recommends Shielded Cables, however unshielded cables will work just as well for most applications.
The ANT chip that is in the PM4 allows you to race without the wires under certain circumstances. The performance of the wireless racing can vary depending on the environment, distance between machines, and other factors. If you can use cables, by all means use the cables since they offer a more reliable connection. But for an impromptu race between a few rowers, the wireless capability is very convenient and easy to use.
- Wireless race does not have infinite range: Testing is still taking place, but Indoor Sport Services recommends wireless racing between a few rowers in close proximity (less than 10 feet maximum spread. If you try more and it doesn't work, use cables!
- Wireless racing does not support ANT heart rate concurrently with your race. If you need to monitor heart rate, use the wires for PC-less race.
- You can only have one wireless race in the same room or general area (probably 30-100 feet/10-30 metres). You can have many 'wired' races in the same room.