DISPLAYS: Colored light emitting diodes (LED) and
a high contrast liquid crystal display (LCD) with custom legends and 0.4
inch high digits. All LEDs and display segments are tested on power up.
DATA UPDATE RATE: All output data and displays
updated every 0.6 seconds.
OPERATION: All operating modes selectable by a
single, front-panel push switch. Modes are organized in
a logical, easy to remember arrangement.
OXYGEN ALERT: An LED illuminates if altitude exceeds
12,500 feet to warn that oxygen may be required.
WARM-UP PERIOD: Less than 2 minutes. An oven is
used to maintain critical pressure sensing electronics at
uniform temperature. No data is available until oven
reaches operating temperature.
SERIAL OUTPUT: Pressure altitude, altitude and vertical
speed (VSI) are output in 5 Volt, RS-232 format at 9600
baud. Outside air temperature (OAT) and density
altitude are also output if temperature/density option is
installed. Baud rate is not adjustable.
POWER REQUIREMENTS: 11 to 35VDC. Operates
directly from standard 14 or 28V aircraft power without
modifications or adapters. At 14V, 400mA maximum
current drain during warm-up, 60mA typical thereafter.
BACKLIGHTING VOLTAGE: Separate inputs for 14 or
28V lighting sources. 10mA maximum current drain at
full brightness.
ENVIRONMENTAL CONDITIONS: Meets or exceeds all temperature, humidity,
vibration, over-pressure and
magnetic effect requirements of FAA TSO-C10b,
paragraph 3.3.
WEIGHT: Less than 8 ounces.
DIMENSIONS: Standaard 3 1/8 instrument case. 3 dia
x 3 7/8 depth behind back of instrument panel (plus 3/4
connector depth).
MATING ELECTRICAL CONNECTOR: 26 pin card edge connector, 3M thpe
3462 or equivalent, supplied with 4
cable pigtail.
PRESSURE CONNECTOR: 3/16 barb. Mates with
5/32 ID x 9/32 OD plastic tubing, Nalgene series 180 or
Tygon R-3603 or equivalents. A sample length is
supplied.
BAROMETRIC REFERENCE: Settable from 24.00 to
31.00 inHg (Model 2000) or 813 to 1,050 mBar (Model 2001). The extreme
lower limit allows zeroing for field
elevations to 6,000 AGL (ultralight mode). Last pressure
reference setting is retained in memory.
ALTITUDE ALERT MODE:
TARGET ALTITUDE: Set to the nearest whole 100
feet of current altitude when entering alert mode.
WINDOW: Initially ±200 feet. Adjustable from 100 to
1,000 feet in 50 foot steps.
DISPLAY MODES: Altitude or deviation from target
altitude.
VISUAL ALARMS: Colored LEDs indicate deviation
from target altitude as a percent of selected window
as follows:
less than 70% - solid green
more than 70% - flashing yellow
more than 100% - flashing red
AUDIO ALARMS: Low-level output suitable to drive
intercom or other systems. Beeping tone sounds if
deviation goes over 70% or 100% of window
(silenced by pressing MODE button). Tone pitch
indicates if altitude is high or low.