K114 Issue No. 9
Reference and Specification
6 - 30
NAME
The aircraft name or component/system name/number is used for selecting the set of
limits in SETUP or CONFIG. Enter up to 8 characters using 0 to 9, - (minus), . (decimal
point) and any alphabetic characters in any order or combination.
To enter a alphabetic character (A to Z), press [ALPHA] and use the nudge keys to
change to the required character. Press [ALPHA] again to enter another alphabetic
character. Press [BACK] to delete the last character. When editing text use the CLEAR/
QUIT key to cancel editing.
MIN ALT, MAX ALT, MIN CAS, MAX CAS
These are the fundamental aeronautical unit limits.
MAX MACH
This limit only applies in aeronautical mode. It can be used to set a maximum Mach
(e.g., Mach 1.05).
If a Mach limit is not required, enter a high value (e.g., 10).
The Mach limit can be changed or disabled in full set-up mode using SETUP, [MACH],
see SET UP, MACH for further details on Mach limits.
MAX ROC, MAX RATE CAS
These limits are the maximum rate of change for altitude and airspeed and only apply
in aeronautical units.
MIN Ps, MAX Ps, MIN Qc, MAX Qc
These are the fundamental pressure unit limits.
MAX RATE Ps, MAX RATE Qc
These limits are the maximum rate of change for Ps and Qc and only apply in pressure
units.
ARINC LIMITS (Figure 6-3)
ARINC 565 operating limits are enabled by setting ARINC LIMITS ON and implemented
as shown in Fig. 6-3.
Due to the shape of the altitude/airspeed envelope, these limits cannot be
implemented using the above altitude, airspeed and Mach limits.
Using the [ON/OFF] function key select the required ARINC limits ON or OFF.
When used in combination with another set of limits, the lower (more restricting) limits
apply.
If ARINC limits are selected and any of the other limits are greater than the values of
the ARINC limits a display message requests confirmation that the lower, ARINC limit, is
to be used before the limit is saved.
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