Owner’s Manual | PCAS XRX
FREQUENTLY ASKED QUESTIONS 51
encoder, if one is present, broadcasting, and within tolerance. The altitude from your transponder is always
double-checked against the built-in pressure altimeter to ensure accuracy. If any discrepancies occur, the unit
defaults to using the built-in altimeter. The local squawk code comes from your transponder’s encoder output, if
XRX has successfully linked to your transponder. Otherwise, a code of “0000” is shown. The squawk code can be
found on the General Information page in Admin mode (see page 43, “Additional Menus: Administrative Mode”
for more information).
Is there any other place to position XRX than on the glareshield?
XRX must be in plain sight of other aircraft and has been specifically designed and calibrated for use atop the
glareshield. Generally speaking, XRX must be used in this location. However, other mounting options such as
suction-cup platforms may be used. XRX cannot be used in any area outside of this general area, however, such
as on a seat or console, or mounted on the yoke. The directional antenna must be above the metal mass of the
instrument panel, firewall and engine block with as clear of a view as possible, and must be oriented in a forward-
facing manner (or 45° right when used in conjunction with the 45° screen option, see page 43). Options are or
may soon be available for installing XRX into the panel with significant reconfiguration of the hardware. Visit our
website for more information.
Why can’t I scroll through more than three aircraft at a time?
XRX was designed to show up to three targets at a time, with the top priority, or primary aircraft, displayed on
the left side of the screen. Additional aircraft are tracked, but are not as much of a potential threat than the three
aircraft displayed. The primary aircraft represents the greatest threat to you. If this information was replaced, even
temporarily, by a lesser threat, the greater threat may be overlooked. This would put the pilot at risk. XRX smartly
manages traffic prioritizing so that the pilot doesn’t have to.
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