Originally Posted by
njkayaker
>> scott967: But I guess it is also possible to simply have the slave (head unit) search without following the pairing bit. That way the master doesn't need to do anything.
The head unit having a "pairing mode" is a requirement. The sensor having such a mode is not a requirement (whether or not there's a benefit).
The 'pairing bit' is not a requirement of pairing a device. scott967 has it right. On a head unit you only search for new devices when in the searching screen, and will usually pair with whatever sensor is found (no need to use pairing bit) as the sensor is happy for anyone to receive its data. Some head units however, restrict you to only finding sensors that you have said are trying to pair (which makes it much easier to deal with having other people with sensors around while trying to pair a new head unit/sensor combo), and so add the filter for the pairing bit being set.
Originally Posted by
njkayaker
The reset button on the Garmin GSC-10 appears only to be used when setting up the sensor with the magnets (it isn't used when pairing).
If I remember correctly, the reset button is a way to test the sensor magnets are detected. After you press it the LED flashes when a magnet pass is detected.
Plus, it also sets the pairing bit, so head units that require it will pair.