2. c.
(2) (a) z Digital Mach Readout - A Mach number digital readout is
displayed below the speed scale whenever the CAS tape
configuration is active.
The data is labeled with a white
“M” to designate Mach.
The digital readout is normally
white. When V~~M~O is exceeded,
the Mach digits turn red.
(b) Mach Scale (MACH)
Mach Number Analog Scale -
The white scale markings on the
tape are shown at 0.02 Mach intervals.
The markings are
labeled
in white every 0.02 Mach interval.
Mach Number Digital Readout - A digital readout of the
actual Mach number is magnified and displayed within the
current value pointer. The digital data is displayed in
white
using a digital rolling drum presentation readable to
a 0.01 Mach resolution.
M Vector -
The M~O vector is a fixed red bar located on the
‘%
in oard side of the Mach scale, originating from the Mach
scale endpoint extending out to MO (Figure 203). When the
value in the pointer exceeds VH~~O, the digital Mach data,
in the current value pointer, 1s ~urned red.
Mach Target Digital Readout -
The speed target digital data
is displayed in green at the top of the Mach scale. The
speed target data is set by the pilot using the flight
guidance controller, or it is available automaticallywith
the FMS.
Mach Target Bug - The
green triangular Mach target bug
travels along the inboard side of
the Mach tape. The bug
position on the scale corresponds to the digital Mach target
value displayed at the top of the Mach scale.
Digital CAS Readout
- A CAS digital readout is displayed
below the speed scale whenever the Mach tape configuration
is active.
The data is labeled with a white
KTS to
designate knots.
The digital readout is normally white.
When
v~O/M~Ois exceeded, the CAS digits turn red.
22-14-00
Page 218
Apr 15/93
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