HIGH QUALITY
Most high-quality transmitters from JR/Spektrum, Futaba and others
use 2048 resolution. This degree of resolution is so important
that "2048 resolution" is listed as the first key feature for the
new Spektrum DX8 transmitter.
2048 RESOLUTION
Resolution is the term used to describe how many steps there are
when moving the sticks over their full range. The transmitter
measures these steps, and 2048 resolution means that there are 1024
steps in one direction and 1024 steps in the opposite direction
(e.g. right/left rudder stick). The control sticks on most
transmitters move about 1 inch in each direction, or
2 inches total side-to-side. So 2048 resolution gives about
0.001 inch or one-thousandths of an inch of measurement
accuracy.
DECIDING WHAT RESOLUTION TO FLY
Pilots want high resolution because the human finger is very
sensitive and can easily feel a 0.001 inch step. For
instance, lay a piece of aluminum foil flat on a table, and then
run your finger over the edge. You can feel it. Aluminum foil is
about 0.001-inch thick. This sense of touch is what pilots use to
make precise and continuous adjustments when flying, whether it's a
high speed jet, helicopter or sailplane. Even for sport flying
this degree of resolution makes a difference. It's the difference
between flying smooth or flying "steppy", which why 2048 is a big
deal.
256 vs 2048 RESOLUTION
MAKE THE CHOICE
Now take 2048 and divide that resolution by a factor of 8. Yes, 8
times less resolution, or 256. That's the difference between
measuring with a yard stick in 8ths of an inch vs a precision steel
ruler in 64ths of an inch.
What would you rather use?
The truth about other RC simulators -- If you buy any other RC
simulator, chances are that the resolution is only 256. It is not
hard to discover this fact. The Windows game controller program
(in the control panel) allows you to see the 'raw data', which
shows the counts. Surprisingly, some simulators that come with
only 256 resolution end up only using only a fraction of that. In
our measurements with full stick deflections, the count started
near 50 and only went to near 200, which is a resolution of only
150 counts. With that kind of resolution on an 3D aerobatic
airplane, it means that moving the stick causes the control
surfaces to move in steps as large as 2/3rds of a degree. With the
control surface deflections being that imprecise, flying with
precision is not even possible whether its a jet, sport flyer,
sailplane or 3D aerobatics.
DIGITIZED EXAMPLE
The difference between 256 and 2048 resolution is shown below for
an aerobatic airplane with a surface having 45 deg up and 45 deg
down elevator. Small deflections around cruise flight are shown.
For each step with 256 resolution, the higher 2048 resolution
breaks it down into 8 more steps. Obviously the higher resolution
is essential to having precise and smooth control when you fly.
THE COST OF BUILDING 2048 RESOLUTION
Why not use 2048 resolution for all simulators and real
transmitters? The electronics and supporting firmware that
together make 2048 work for all channels is much more expensive
than off-the-shelf 256 circuitry. 256 resolution is cheaper to
produce because many chips are 8-bit which directly and cheaply
gives 256 resolution. With 2048, it requires 11-bits and usually
that requires a 16-bit chip. And this 16-bit chip must work for
all supported channels, e.g. the 8-channel capability in
FS One V2. And on top of having high precision, it must
be fast. As tiny as they are, these chips are not cheap!
FS One V2
2048 RESOLUTION IS HERE
Each FS One V2 package includes the circuitry to support
2048 resolution. InertiaSoft is the first company to bring this
technology to RC flight simulation. Out-of-the-box,
FS One V2 is programmed for 1024 resolution, which is 4
times more accurate than 256 resolution. To transition to 2048
resolution (8 times more accurate than 256 resolution), download
and install the latest FS One V2 update (2.0.4 or higher). Also,
download and run the USB Interface firmware update to migrate your
FS One V2 USB interface to 2048 resolution. Enjoy flying
the most accurate RC simulator available. It just became more
accurate.
For instructions on moving to the new 2048 resolution firmware,
click here »