Garmin G500, Инструкция по эксплуатации

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AFMS, GARMIN G500/G600 SYSTEM 190-00601-01 Rev. L
FAA APPROVED Page 41 of 52
GPSS
HDG
(toggle switch)
AP HDG
DATUM
GPSS
HDG
(push-button)
AP HDG
DATUM
4.6.2 Course / NAV Selection coupling to the autopilot
When operating the autopilot in NAV mode, the deviation information from the
installed navigation sources (i.e. GPS1, GPS2, NAV1, NAV2) is switched via
the G500/G600 PFD display. Whatever is displayed on the HSI is the NAV
source the autopilot is following. Most autopilots also use the course datum to
determine the best intercept angles when operating in NAV mode.
4.6.3 Heading Bug coupling capability to the autopilot
When operating the autopilot in HDG mode, the difference between the HDG
bug location on the HSI and the actual aircraft heading creates an error signal
which the autopilot will minimize by turning in the direction of the bug. If the
bug is turned more than 180 degrees, the autopilot may turn the airplane in the
opposite direction of the desired turn.
4.6.4 GPSS emulated via HDG mode
For autopilots that do not support digital GPSS signals, GPSS functionality may
be emulated by operating the autopilot in HDG mode and selecting GPSS on the
PFD. Depending on the installation, GPSS mode may be toggled via an external
switch located near the autopilot control panel, or by pressing and holding the
HDG button on the PFD. If an external switch is installed, it will be either a
toggle or push-button switch as depicted below.
OR
If the installation uses the HDG button on the PFD, the PFD Knob Mode
Indicator is expanded to label the button function.
GPSS OFF GPSS ON
When GPSS is selected on the PFD, the heading bug on the HSI changes to a
hollow outline and a crossed-out heading bug appears in the PFD Knob Mode
Indicator, indicating that the autopilot is not coupled to the heading bug. The bug
is still controllable and may still be used by the pilot for reference.