Using your Dream Player MC
Page 11
Dream Player MC – User Manual
The switch examples shown above don’t really need the opto-isolators, so where would
you need the opto-isolators? How about connecting to a DCC Decoder!
In the next example, we will connect a Digitrax TF4 to allow the Dream Player to be
controlled directly from your DCC System. Any brand of mobile or stationary decoder
could be used, but the low-cost of the TF4 lends itself nicely to this application.
Here we have connected the 4 function outputs of the TF4 to the 4 Dream Player Trigger
Inputs. Since the DCC Decoder must be connected to the DCC System, where there is
considerable noise, some kind of isolation would help us here. The Dream Player opto-
isolators keep the DCC system completely isolated from the Audio Ground and remove
any chance of noise entering the sound system and speakers. Note that the 5V and the G
terminals are left un-connected since the opto-isolators are being powered from the DCC
decoder lamp power lead.
Figure 4 - Isolated DCC Decoder Connections
.
Note:
The actual function of each Trigger Input is determined by using the CONFIG.TXT File.
