|
曝光台 注意防骗 网曝天猫店富美金盛家居专营店坑蒙拐骗欺诈消费者
Data Select Keyboard (Cont’d)
The heading/status
key is used to display the current airplane heading. When the IRU is in align mode, the NDU displays alignment status (time remaining until NAV mode entry). When the IRU is in NAV mode, the NDU displays heading in the left display. When the IRU is in attitude mode, the NDU displays magnetic heading in the left display and “ATT”in the right.
Displays
The NDU contains a data display and a FROM TO WPT display.
The NDU data display consists of two displays, a six position and a seven position display, each having degree, decimal and minute indicators.
The FROM TO WPT display has three elements that display the FROM and TO waypoint numbers of the current leg and the number of the waypoint defined by the position being displayed.
GF1710_167
Fault Annunciator
The NDU FAULT annunciator is illuminated when the NDU BITE detects internal failures.
Volume 2 Flight Crew Operating Manual Rev 2A, Apr 11, 2005
To update the NDU (pre-flight), proceed as follows:
Power On
. Power the NDU on.
Test
. Test the NDU displays, annunciators and cue lights.
Rev 2A, Apr 11, 2005 Flight Crew Operating Manual Volume 2
Position Entry
The following procedures can be used for position entry (initialization), during IRS alignment and align downmode.
Press ENT key to transmit longitude to all IRUs.
Press HDG STS key and observe time to complete alignment in right display.
GF1710_171
Volume 2 Flight Crew Operating Manual Rev 2A, Apr 11, 2005
Position Entry (Cont’d)
Enter the magnetic heading when the latitude mode has been selected.
Press ENT key to transmit heading to all IRUs.
NOTE
For more information, refer to the LASERTRACK Navigation Display Unit Pilot’s Manual
GF1710_172
Rev 2A, Apr 11, 2005 Flight Crew Operating Manual Volume 2
GF1710_173
Volume 2 Flight Crew Operating Manual Rev 2A, Apr 11, 2005
The GPS is used to determine airplane position and provides supplementary information to FMS and EGPWS. The GPS calculates the latitude, longitude, altitude, accurate time, date, true heading and ground speed.
The Global Navigation System Sensor Unit (GNSSU), is a GPS receiver that receives satellite signals from the NAVSTAR GPS satellite constellation (21 operational satellites and 3 active spares) and uses the satellite data to compute the airplane position.
The GNSSU has a Receiver Autonomous Integrity Monitor (RAIM) function. The RAIM monitors the status of the satellites that are used for calculations. The output of the RAIM function is an estimate of GPS position error. The RAIM value is sent to the FMS and the FMS uses this data to determine if it can use the GPS for navigation.
MODES OF OPERATION:
The GNSSU operational modes are as follows:
.
Self-Test Mode . The GNSSU is in the self-test mode for approximately 5 seconds. When the self-test mode is complete, the GNSSU enters the initialization mode.
中国公务机网 www.gongwuji.com
公务机翻译 www.aviation.cn
本文链接地址：庞巴迪环球5000公务机机组操作手册 Bombardier Global-导航(28)
| 
