User manual

DPSI RV Family Operating Instructions Version 2.1
page 13 of 44
4.4. Safety Features of the DPSI RV Systems
Short circuits on the servo signal wires, regardless of whether they are
toward the positive or negative wire of the servo cable, do not result in
damage to the DPSI RV. All other servos of the channel in which the
short circuit occurs remain fully functional. Even if the servo’s polarity is
reversed, the DPSI RV is not damaged.
A servo cable that is accidentally short-circuited will generally burn out
or melt, without damaging the DPSI RV. The heat sink of the DPSI RV
naturally becomes very hot when this type of short circuit occurs!
The decoupling of the two batteries as well as the electronic switches
is completely separate (including peripheral electronics) and therefore
carried out twice. No
double diodes are used (two diodes in one
housing). Thus, the failure of one component can never lead to the
failure of the entire system. The switching mechanism has already
proven to be outstanding in several thousand systems.
The DPSI RV does not need to be separated from the batteries during
long breaks (e.g. in winter), since the self-discharging of the batteries is
considerably greater than the quiescent current consumption of the
DPSI RV, which is virtually immeasurable.
To enable optical switch-on control, an ultra-bright light-emitting diode
was installed into the switch transmitter of the DPSI RV. This signals
that the system is turned on, even at great distances and indicates
through blinking low voltage of the battery / batteries.
All commercial remote control systems (Robbe/Futaba, Graupner, JR,
Spektrum, Multiplex) were successfully tested in all types of modulation
(PCM, SPCM, PCM1024, PPM, IPD, 2.4GHz etc.) in connection with
the DPSI RV. Thus, all systems can be used trouble-free.