If the calibration procedure fails, then it is like due to one of two causes. The first is that the selected
channel was not ‘empty’ when the first part of the calibration was attempted. The second is that the
selected channel did not have a transmitting vTx when the second part of the calibration was
attempted.
Antenna Modes
Diversity receivers (those which use more than one receiver) are awesome, but are often
misunderstood when flying long range.
To clarify; for long range flight, a diversity receiver is awesome if high-gain antennas are used on both
antenna inputs. For long range flight with goggles though pilots generally use an omni, and a high
gain antenna, the former being not of much use past a few km.
Because of this, the rapidFIRE module gives the user control over how the module operates.
Single module modes (upper or lower SMA) with a single high gain antenna are available, which also
have the advantage of lowering power consumption (and therefore fewer ‘oops’ moments 10km out
when the goggles start playing that annoying low battery beep).
rapidFIRE vs. ‘Legacy’ Mode
The FPV world is currently full of cameras which violate various aspects of the PAL/NTSC spec. Of
course, this being a rather new spec, we shouldn’t be surprised (that was a hint of sarcasm, the
standard has been out since the early 1960s….).
Since rapidFIRE, in order to rebuild the video image, needs to understand the standard fairly well, we
do expect cameras in the future which don’t work as well as we would have hoped.
In order to ensure that a pilot is never in a situation where his new whiz-bang hype-train camera isn’t
compatible with rapidFIRE (at least until we update the firmware next), we included a legacy mode
which turns off some of the ‘smarts’ and increases camera compatibility.
NOTE: For the technically inquisitive, the types of problems seen are cameras where the black pixels
surrounding the OSD text are not ‘black’, but at the sync tip level! Others include the famous 2090 chipset
