Spektrum SPM55101 SPM7800 Ficha De Dados

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SPM7800
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DSMX
Spektrum launched the 2.4GHz RC revolution with its DSM2
 technology. Since then 
millions of hobbyists the world over have come to embrace 2.4 as the way to fly. Spektrum 
leads the way yet again with DSMX—the world’s first wideband, frequency-agile 2.4GHz 
signal protocol. 
How Does DSMX Work?
It’s a crowded 2.4GHz world out there and every 2.4GHz system faces the same challenges. 
DSMX better equips you for these challenges by combining the superior data capacity and 
interference resistance of a wideband signal (like that used in DSM2) with the agility of 
frequency shifts. 
Compared to the wideband signal of DSMX, the narrow band signal of other frequency 
hopping 2.4 transmitters is more likely to suffer data loss in the event of on-channel 
interference. Think of it as a river vs. a stream. It takes more interference to dam a river than 
it does a stream. 
As more and more 2.4 transmitters vie for the same number of available channels, there is 
more interference and more of a risk for data loss. By adding the agility of frequency shifts 
to the superior interference resistance of a wideband signal, DSMX is far less likely to 
suffer significant data loss from on-channel interference. The result is quicker connection 
times and superior response in even the most crowded 2.4GHz environment. 
DSMX Operational Differences
DSMX transmitters and receivers function nearly identically to Spektrum DSM2 systems. 
Binding, setting the failsafe, recording flight log data, as well as general use of the system 
is no different than using any current Spektrum system. 
Following are the operational differences:
Brownout Detection - Not Available on DSMX Receivers
DSM2 receivers feature Brownout Detection that flashes the receiver’s LED if a power 
interruption occurs. While DSMX receivers have QuickConnect and recover instantly 
from a power interruption, the architecture of DSMX prevents Brownout Detection when 
operating in DSMX mode.
Flight Log Recording-Fades Higher than DSM2
Note that DSMX hops through the band while DSM2 finds two quiet channels and remains 
on those channels. Consequently because DSMX operates on quiet and noisy channels, 
it’s common to have more Antenna Fades than when using DSM2, when used in busy 
2.4GHz environments. When taking flight log data readings, the Frames and Hold Data are 
important and should be used a reference while Fades are insignificant due to the nature  
of frequency hopping. A 10-minute flight will typically result in less than 50 Frame  
Losses and no Holds. 
EN