SPZ--8000 Digital Integrated Flight Control System
A28--1146--055
REV 2
Electronic Flight Instrument System (EFIS)
4-30
D Glideslope Comparison Monitor -- On--side displayed glideslope
data is compared with cross--side glideslope data in the symbol
generator. The glideslope miscompare annunciator is displayed
when there is a 50--microampere difference (about 2/3 dot) between
on--side and cross--side glideslope data (both valid and RA less
than 1200 feet). The glideslope miscompare annunciator is a boxed
GS that flashes for 10 seconds and then goes on steady.
D Localizer Comparison Monitor -- On--side displayed localizer
data is compared with cross--side localizer data in the symbol
generator. The localizer miscompare annunciator is displayed when
there is a 40--microampere difference (about 1/2 dot) between
on--side and cross--side localizer data (both valid and radio altitude
less than 1200 feet). The localizer miscompare annunciator is a
boxed LOC that flashes for 10 seconds, and then goes on steady.
D IAS Comparison Monitor -- On--side displayed IAS is compared
with cross--side IAS. The IAS miscompare annunciator is displayed
when there is a 5--knot difference for more than 2 seconds (both
sides valid) and IAS is greater than 90 knots on at least one side.
The IAS miscompare annunciator is a boxed IAS that flashes for 10
seconds and then goes on steady.
NOTES: 1. EFIS miscompare is one of the several avionics
caution/warning inputs that can cause the NAV
caution annunciator on the system annunciator
panel to light.
2. When TCAS is installed, the location of the
glideslope miscompare annunciator moves into the
right side of the attitude sphere.
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