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PRIMUS
R
660 Digital Weather Radar System
A28–1146–111
REV 2
In–Flight Adjustments
7-2
NOTES: 1. Depending on the installation, not all of the
adjustments shown in table 7–1 are available. If STAB
TRIM ENABLE programming pin is open, only the roll
offset adjustment is available. If STAB TRIM ENABLE
programming pin is grounded, all four adjustments are
available. Consult the installation configuration
information for details.
2. After any adjustment procedure is completed, monitor
the ground returns displayed by the radar during
several pitch and roll maneuvers. Verify that the
ground returns stay somewhat constant during
changes in aircraft orientations. If not, repeat the
adjustment procedure.
3. After the trim adjustment feature is selected, more
than one adjustment can be made. They are available
in the sequence shown in table 7–2, and can be done
in the sequence of first finishing one adjustment, then
proceeding to do the next by pushing the STAB button.
4. The in–flight stabilization adjustment range is limited.
If you cannot achieve a satisfactory adjustment
in–flight, a ground adjustment is required.
5. Proper radar stabilization depends on the accuracy
and stability of the installed attitude source.
6. The procedures in tables 7–3, 7–4, 7–6, and 7–8 that
instruct you to “push the STAB button” assume that
you are using a controller rather than an indicator. If
you are using an indicator, pulling the TILT knob out or
pushing it in is equal to pushing the STAB button on a
controller.
7. When you finish the in–flight stabilization procedures,
the STAB can be OFF ( stab light on), an additional
push of the button is required to turn stab back on.