Instruction manual – VDO Z3 User Manual
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INSTRUCTION MANUAL
1.1. GENERAL
1.2. IMPORTANT INSTRUCTIONS FOR THE DIGITAL WIRELESS SYSTEM
 
Your VDO series Z3 works entirely without cable; it works with triple 
digital wireless transmission based on well-established ANT+Sport® 
wireless protocol. The ANT+Sport® wireless protocol has already 
been successfully implemented by manufacturers such as Garmin, 
Specialized, and Suunto. Speed signals, cadence signals (optional), as 
well as heart rate data are transmitted to the respective receiver (com-
puter) as digital and coded signals. Signal coding ensures that only the 
data of your own pulse, speed, and cadence (optional) transmitters are 
processed (this is advantageous when riding in a group).
 
The ANT+Sport digital technology is significantly more reliable than the 
technology of older analog systems. The ANT+Sport technology uses 
standard industrial wireless components, and it can best be compared 
to the technology used in modern WLAN networks. The connection 
between transmitter and receiver is more stable, and subject to 
significantly less frequent malfunction, and it is virtually completely 
safeguarded from data loss.
 
The speed transmitter has a memory component that buffers data eve-
ry 65 sec. Thus no data is lost if there is a malfunction lasting for this 
duration.After the malfunction this data will be resent to the computer. 
Subsequently the following data will be updated:
Daily distance
Ride time
Average speed
Navigator
Total distance
Total ride time
After a malfunction the data can change suddenly = updating the 
computer. Initial operation of a completely digital system requires 
somewhat more care than does initial operation of conventional analog 
systems. The first time batteries are inserted, or after a battery change, 
the transmitter automatically generates a new code. The computer has 
to learn this code. To do this you must execute a DIG CONNECT SET. 
Strictly follow the instructions in chapter 3.3 to do this.
 
ATTENTION: Your VDO computer is not suitable for use on motorcycles.
1.3. CONTROL SYSTEM - OPERATION
The control system of your computer is based on dual assignment of 
the 4 main buttons. In this regard the devices distinguishes between 
operation mode and setting mode.
