www.frsky-rc.com
FrSky Electronic Co., Ltd
Tel: (86) 0510-85187718 Fax: (86) 0510-85187728 E-mail: [email protected] Technical Support:
12
f>0, f<0: If input is positive resp. negative,
return 100%, otherwise 0.
|f|: If input is negative, return -100%. If input is
positive, 100%.
PAGE9:
GLOBAL
VARIABLES
Global variables are values that can be
substituted to the usual number on every Weight,
Offset, Differential or Expo setting. Their main use
is to group the adjustment of several parameters
that should have the same value. For example,
aileron differential on a glider with 4 surfaces
responding to the aileron function. When trying to
find the sweet spot for the differential value,
instead of having to repeatedly edit the differential
value in 4 mixers, all 4 can be set to use a global
variable (e.g. GV1 resp. -GV1, selected by a long
press of the ENTER key on the differential field).
Then adjusting GV1 on this page is all it takes for all
differentials to be updated. Global variables are also
flight mode specific, so instead of having to create
separate mixer lines with different values
depending on the flight mode one can simply use a
global variable with different values for each flight
mode. This can significantly help simplifying the
mixer screen by avoiding many duplicate entries.
Global variables can also be adjusted in flight
thanks to the Adjust GVx Custom Function that will
be described later, and help adjusting those
parameters that are easier to tweak in flight like
D/R ratios, expos or again differential. The Global
variables screen allows setting a name for each of
the 5 available variables for conveniency, and
seeing/setting the value each of them will have in
each of the 9 flight modes.
PAGE10:
CUSTOM
SWITCHES
These are logic switches that are used to
compare values and combine various conditions.
The first "operation" column lists a few
arithmetical, logical and differential operations. In
arithmetical ones a and b represent variables, x
represents a constant. Variables can be every
source, i.e. all those available in mixers, plus the 5
global variables and all telemetry values. In logical
operations the available sources are all physical
and other custom switches. Differential functions
compare the variation of a variable since last match
to another value.
a~x: active when variable a is approximately
equal to constant x (hysteresis added, as
comapring a stick's value for example would
pretty much never trigger an exact match)
a<x, a>x: Active when variable a is smaller resp.
greater than constant x
|a|<x, |a|>x: Active when the absolute value of
variable a is smaller resp. greater than
constant x
a<b,a>b,a=b: See above, but with 2 variables
AND, OR, XOR: Logical and, or, exclusive or
between 2 binary inputs
d>x, |d|>x: Active when the selected variable,
repectively its absolute value has changed by
more than x since last time. For example, d>x
