Personal Coded Device; Operating Modes - Technogym Top 600 XTPRO Service Maintenance Manual

11.2. PERSONAL CODED DEVICE

The machine can be equipped with a new heart rate receiver based on the PERSONAL CODED
DEVICE technology developed exclusively by Technogym in conjunction with POLAR.
Thanks to a special receiver installed on the machine, and using a new "coded" chest strap, the
machine receives only the heart rate signal from its own user. This makes it possible to eliminate
the cross-talk problems, because each machine is selectively tuned into the heart rate signal
transmitted by its user. This new feature translates into a considerable advantage for the health club
owner: with the PCD system, it will now be possible to install cardio machines closer together,
thereby fitting a greater number of machines into a given floor space area.
This technology is an evolution of the Polar Coded technology, with which it is fully
compatible. The PCD system differs from Polar's standard coded technology because it
incorporates certain features which ensure a more accurate and precise reception of the
heart rate signal.
11.2.1. O
PERATING MODES
The new system is based on the fact that the coded strap transmits the user's heart rate signal
accompanied by a special transmitter identification code. In fact, when the user puts on a coded
strap, the strap randomly selects one of 28 available codes and starts to transmit using that code.
The transmitted signal is shown in the figure below:
It should be noted that:
• The transmitter sends the measured heart rate together with another 2 pulses which represent the
coding.
• The 2 coding pulses are very close together (20 msec) and separated from the heart rate pulse by
a value T proportional to the transmission code, according to the table below:
Page 11.6
TOP 600 XTPRO: Service & Maintenance Manual - rev. 2.0