Veloset Installation FAQ

Veloset Cycle Computer Installation FAQ

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Q ? Can you export data from the Veloset GPS 600 into different formats?

A - YES.

1-Import the data from your Veloset GPS 600 with the USB cable into the MainNav Software.

Q ? Where on the fork do I mount the wireless sensor?

A - Actually, it doesn't matter.  You can mount the sensor anywhere along the height of the fork leg, from the hub to the rim.  This is because when you calibrate the computer during original set-up, you are entering a circumference measurement of your tire, in either cm or mm, depending on which model you own.  The computer then multiplies this circumference by the number of rotations, which are the same when measured at any point along the radius of the wheel (the spoke), to determine speed and speed related functions. Ensure that the magnet and sensor pass with no more than 5mm between.

Q ? How do I change my computer from kmh to mph?

A - All of the Veloset  cycle computers can measure and display in either kph or mph. This is typically the first step in the computer setup process after performing a "Reset" . On most of our computers you will need to hold down the MODE & SET buttons for 3 seconds. At this point you can specify your preference. 

Q ? I just got a reading of 99.99kmph or some other highly improbable speed on my wireless cycle computer?

A -

This is most likely due to some form of Signal Loss or temporary interference to your wireless signal. Any wireless device can be prone to this, but can be prevented during set up and awareness.

It is possible that the loss of signal or interference on any wireless device is  a result of Electromagnetic interference (or EMI, also called radio frequency interference or RFI). This is disturbance that affects an electrical circuit due to either electromagnetic induction or electromagnetic radiation emitted from an external source. The disturbance may interrupt, obstruct, or otherwise degrade or limit the effective performance of the wireless circuit. The source of interference may be any object, artificial or natural, that carries rapidly changing electrical currents, such as an electrical circuit, Street Power Units, Power Sub Stations, Electricity Pylons, Magnets, Wi Fi, the Sun or the Northern Lights. You name it, the technological and the natural all do it.. to varying degrees.

EMI can also be intentionally used for radio jamming, as in some forms of electronic warfare, or can occur unintentionally, as a result of spurious emissions for example through intermodulation products, and the like. It frequently affects the reception of AM radio in urban areas. It can also affect mobile phones, FM radio and television reception

Wireless cycle computers use the 2.4 GHz frequency to transmit the signal from the wheel/sender to the receiver/computer. Interference between the wireless signal can sometimes result in an unexpected manner,

The following are known emitters of EMI that can interfere with other devices operating on the 2.4ghz

Bluetooth

Bluetooth devices intended for use in short-range personal area networks operate from 2.4 to 2.4835 GHz. To avoid interfering with other protocols that use the 2.45 GHz band, the Bluetooth protocol divides the band into 79 channels (each 1 MHz wide) and changes channels up to 1600 times per second. Newer Bluetooth versions also feature Adaptive Frequency Hopping which attempts to detect existing signals in the ISM band, such as Wi-Fi channels,  avoid them by negotiating a channel map between the communicating Bluetooth devices or simply turning Bluetooth off!

Car alarms

Certain car manufacturers use the 2.4 GHz frequency for their car alarm internal movement sensors. These devices broadcast on 2.45 GHz (between channels 8 and 9) at a strength of 500 mW. Because of channel overlap, this will cause problems for channels 6 and 11 which are commonly used default channels for Wi-Fi connections. Because the signal is transmitted as a continuous tone, it causes particular problems for Wi-Fi traffic. This can be clearly seen with spectrum analysers. These devices, due to their short range and high power, are typically not susceptible to interference from other devices on the 2.4 GHz band.

Wi-Fi networks.

Particularly in the UK, whereby most broadband providers are giving away free routers with wireless built in and enabled by default (without you knowing!) it is possible that a wi-fi channel could interfere. Wi-Fi networks/hotspots. Unlike Wi-Fi they operate continuously, and are typically only 10 MHz in bandwidth. This causes a very intense signal as viewed on a spectrum analyser, and completely obliterates over half a wi fi channel. The result of this, creates interference on anything else using the same wireless channel.

Alternative

The Veloset VS 2131 is a wired solution, ensuring that the wireless signal will not be lost due to EMI.

Prevention/Checklist

- The sender (forks) is within 5mm of the magnet (spokes) as it passes the wheel on each rotation the magnet triggers the signal as it passes. You can test if the sender is working by doing this manually by passing the magnet over the sender, the signal should show on the receiver.
- That there is no interference from other wireless objects, like a router or phone. Electromagnetic interference may cause a problem, is it occasional or all the time?
- The distance is within 1 metre between sender & receiver
- The angle is not way out between the receiver and sender (offset).
- The wheel size has been programmed in correctly.
- You have tried fully resetting it, holding down both buttons and checking the wheel measurement
- To reset the max/average/odo readings alone hold down set for 3 seconds when you have that reading on the screen. They will return to 0.
- The sender (forks is not damaged and batteries checked) and is securely fixed in place.

It could even be a battery, or a problem with the sender on the forks? Veloset have spares of both, so if in any doubt, simply let us know. 

Remember to refer to our veloset cycle computer instructions which are available online.

These will guide you through any issues with set up or installation.