190-01639-00
GSU 75 ADAHRS Installation Manual
Rev. 6
Page 1-5
1.4.3 General Specifications
Table 1-4 contains general environmental specifications. For detailed specifications, see the
applicable Environmental Qualification Forms.
NOTE
The GSU 75 may require a warm-up period of 15 minutes to reach full accuracy (30
minutes if the environmental temperature is less that 0
°
C).
1.4.4 Power Requirements
Table 1-4 General Specifications
Characteristics
Specifications
Regulatory Compliance
RTCA/DO-160E Environmental Conditions and
EUROCAE/ED-14E
Hardware Compliance
N/A
Unit Software
GSU 75 - RTCA/DO-178B Level A
GMU 44 - RTCA/DO-178B Level B for all software
versions
Aircraft Angular Rates
± 250 °/s
Aircraft Pressure Altitude Range
-1,400 feet to +55,000 feet
Aircraft Vertical Speed Range
-20,000 feet per minute to +20,000 feet per minute
Aircraft Airspeed Range
20 Knots to 435 Knots
Aircraft Mach Range
<1.00 Mach
Aircraft Total Air Temperature
-85° C to +85° C
Unit Operating Temperature*
-55° C to +70° C**
Maximum Days of Continuous Operation
49
*If the ambient temperature is -45° or less, a warm-up period of 30 minutes is needed for the Air Data
Computer.
**-55° C to +65° C for 011-03094-00 Hardware Mod Level 1 units only
Table 1-5 Power Requirements
Characteristic
Specification
Input Voltage
14/28 Vdc - See the Environmental Qualification Form for details on
surge ratings and minimum/maximum operating voltages.
Operating Current Draw
including GMU 44
0.38 Amps @ 27.5 Vdc
340095
The document reference is online, please check the correspondence between the online documentation and the printed version.
