User guide

Charnwood Dynamics Ltd. Coda cx1 User Guide – Coda Basics I - 1
CX1 USER GUIDE - COMPLETE.doc 26/04/04 28/162
Start-up and Shut-down Procedures
Start-up
After ensuring all system hardware elements are connected appropriately, follow the start-
up procedure listed below:
1. Switch on power to the computer and monitor, and allow Microsoft Windows to
start.
2. Switch on the Coda cx1 scanner units from the bulk head of the mini hub or the
front panel of the Quad UART board, checking the green LED is on for each unit.
3. When Windows has completed loading you can launch the Charnwood Dynamics
Codamotion Analysis software.
4. The system is now ready to use as soon as you have attached the markers to the
subject whose movements you wish to measure.
Note that if you do not wish to acquire movement data but want to review or analyse data
files already acquired it is not necessary to switch on the Coda cx1 scanner units.
Shut-down
At the end of your measurement session first remember to PUT THE MARKER DRIVE
BOXES ON CHARGE, and then:
1. Exit the Codamotion Analysis Software.
2. Switch off the Coda scanner unit(s) at the mini hub or Quad UART board.
3. Shut down the computer.
Coda Markers and Marker Drive Boxes
The markers which are tracked by the Coda scanner units are small infra-red light emitting
diodes (LEDs). They are available in three sizes; standard, mini and micro.
The LED markers are powered from small drive boxes which are available in two sizes; 2-
marker or 8-marker. All the drive boxes contain sophisticated circuitry which responds to
infra-red synchronising pulses sent out from the Coda scanner units. The circuitry flashes
the markers at an appropriate point in the time multiplexed sequence which corresponds
with the marker numbers on the box. This is how the system maintains intrinsic marker
identity.
2-Marker Drive Boxes
The 2-marker drive boxes are powered internally by rechargeable button cell batteries.
Each drive box has 2 small sockets into which individual markers can be plugged. Next to
each socket is a number which indicates the identity of the marker which is plugged into
that socket. Note that the markers do not intrinsically carry any particular identification,
they take on the identity of whichever drive box numbered socket they are plugged into.