8
Operation
When power is applied to the TrainSpeed unit, it will display
the jumper settings for a short time by displaying oP.x where
‘x’ is the jumper setting shown in table 3.
oP.1
After about 2 seconds, if all is connected correctly, the display
will show 4.3.2.1 indicating that all sensors have been
detected correctly.
4.3.2.1
If one (or more) of the numbers is missing, and that sensor
pair was installed, then there is a problem with that sensor
pair. For example, if sensor pair 2 was not connected or
connected incorrectly the display would look like this:
43 1
At power-up the unit will scan the four sensor pairs. It expects
all eight sensors to be ‘seeing’ light. If any sensor indicates
that it is ‘dark’ (common causes can be a train parked over it,
the sensor fell out of the hole or the connector is not installed
correctly) that sensor pair’s number will be blank in the above
display. If the missing sensor pair(s) were installed and are
uncovered, see the troubleshooting section. If you had parked