JOG EXCITE: Service & Maintenance Manual - rev. 1.1
Page 3.2
3.1.1. DISPLAY BOARD
This is the heart of the display: this is the circuit board which comprises the CPU, an ARM
microprocessor, its logic circuits and a FLASH EPROM containing the operating program for the
machine moreover, acts as the interconnection hub for all the components of the display and serves
as the point of connection with the electrical box. In fact it receives and process signals from:
- Keyboard;
- HS / Cardio receiver board;
- TGS reader;
>
receives from the AT driver the +12 Vdc power supply, which is used to produce the +5 Vdc
and then distributes the correct voltagesto the various devices;
> Exchanges, over the RS-485 serial link to the AT driver box, commands for controlling the belt
and elevation motors;
> Makes available a communication port, on 1 externally accessible connector, which can be used
for connecting compatible CSafe devices such as the CardioTheater readers. This connector is
situated on the back of the display.
These connector can also be interfaced, using a special cable, to an external PC for
programming the FLASH EEPROM.
> controls the LEDs and the 7-segment displays which provide feedback about the exercise
session.
The board includes the following indicator LEDs:
LED name Color Description
LED1 green
if ON the +12 Vdc power supply from the
AT Driver correctly reaches the board.
3.1.2. TGS READER
This board enables the machine to read the TGS key inserted by the user for performing workouts
programmed with the Wellness System.
3.1.3. HS / CARDIO RECEIVER BOARD
This is the board which:
> manages the hand sensors, interfacing them with the display board. It processes the analogue
signal received from the sensors and outputs one positive logic pulse for each heart beat that is
detected. The signal level is normally 5 Vdc; it goes to 0 Vdc when the user’s hands are placed
on the contacts, and a 5 Vdc pulse (having a width of approximately 30 msec) is output at each
detected heart beat.
> manages the signal received from the telemetric transmitter used by the person exercising. It
receives the power supply signal from the display board and outputs a negative logic pulse for
every heart beat that is detected: the signal level is normally 5 Vdc, with a pulse at 0 Vdc
(having a width of approximately 30 msec) at each heart beat.
The receiver reception area is approximately a circle with a 1 m radius. If there is
electromagnetic noise (produced by high voltage lines, radio transmitters, monitors, motors etc.)
within this area, the receiver becomes saturated and no longer receives any signal.
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