GB
Sound module USM-RC-3
46
BEIER-Electronic
11.10.2021
It is essential to note that Prop #1 of the sound module must always be the throttle
channel of the radio and Prop #2 always the steering channel, if an automatic
evaluation of the steering is to take place (e.g. for the turn signals or cornering
lights).
Digital switches at sum signal SUMD3
With the sum signal "SUMD3" some remote controls (for example Graupner mz-16,
mz-32) can also transmit up to 64 digital switches. Each digital switch can be
assigned with a function oft the USM-RC-3 (see page 74). Thus, these digital
switches are ideal for controlling the various functions of the USM-RC-3.
Each digital switch can be set on the transmitter, in the "On/Off", "Pulse" and "Flash"
modes.
For the following functions of the USM-RC-3 the mode
"Pulse"
must be selected:
•
Light and Lightswitch -
•
All WAV-Player functions (play, pause, track rev / fwd, random)
•
Indicator left and indicator right
•
All additional sounds, in mode „once“
The default 0.5 s can be retained in the transmitter as pulse time. The pulse time can
also be reduced to 0.1 s, which speeds up the transmission a bit.
For all other functions of the USM-RC-3 the mode
"On/Off"
should be selected.
Switching outputs
The SFR has 17 outputs, which can be used to drive electrical consumer units such
as lamps, light-emitting diodes, relays, smoke generators etc. Different switching
functions and output types can be attached to the 17 outputs by using the Sound-
Teacher (see page 80).
The USM-RC-3 is always switching the negative pole to each output and thus to the
connected load (e.g. LED, lamp, relay). The loads plus pole is connected directly to
the supply voltage, or to the black and white cables of the output blocks (collected
plus pole).
The intensity (PWM-control) of each output can be configured with the Sound-
Teacher by steps of 2%, between 2% and 100%.
If relays or other inductive loads (e.g. motors) should be connected to the switching
outputs, free-wheeling diodes must (e.g. 1N4007) be used. For relays, the brightness
must be set to 100 %, otherwise the relay "flutters".
