tams elektronik WIB-31 Manual page 9

WIB-31 | WIB-32 | WIB-33
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Random switch switching on and off the output in irregular intervals
(e.g. for the lighting of a toilet cabin).
Connecting a light dependent resistor
When a light dependent resistor is connected, the LEDs and the
decoder´s function outputs can be switched on and off automatically
depending on the surrounding lighting. The sensivity is set via CVs or
registers. You can activate the dim switch with a function key.
The dim switch effects only those outputs switched on. As soon as the
outputs have been switched off by the dim switch they cannot be
switched on with a function key. In this case the dim switch has to be
deactivated first.
With the initial settings the LEDs are switched on as soon as the
surrounding lighting under-runs the set limit value. It is possible to
invert this functionality, e.g. in order to automatically switch off the
lighting in a shadow station.
Flickering protection
An integrated smoothing capacitor supplies the LEDs when short
current interruptions occur, which prevents the lighting from flickering
when points or smudges on the rails are crossed. In case the integrated
smoothing capacitor is not sufficient, you can connect an additional
external bridging capacitor with a minimal voltage sustaining capability
of 16 V or two goldcaps with a minimal voltage sustaining capability of
5,5 V.
In order to supply the three function outputs of the decoder you can
connect a second additional external bridging capacitor. It is not
possible to use goldcaps here, as the minimal voltage sustaining
capability is 25 V or 35 V (when connecting the PCB to analogue a.c.
voltage).
Feedback with RailCom
RailCom is a log for bi-directional communication in digital model
railway layouts controlled in DCC-format. It allows e.g. the feedback of
the address and the CV values from the decoder to the digital control
unit or to special receivers (so-called detectors). The decoders must be
designed to send the RailCom messages.
When so programmed, the integrated function decoder sends
(continuously) the (basic, extended or consist) address to the detectors
(so-called RailCom broadcast datagramm) and transfer a CV message
after a DCC CV read-out command.
Sending RailCom messages is only possible in layouts with a DCC signal
on the rails. That is the reason why it is not possible to use the
RailCom-function in a pure Motorola environment, but only when at
least one other locomotive or function decoder on the layout is
controlled in DCC format.
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