34-31-02
ú ú 06 Page 11 ú Mar 15/92
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
(2)
Converts VOR/LOC deviation and bearing analog signals to digital for transmission to the FMCS when the VOR/LOC valid (VOR/LOC super flag) discrete is present.
(3)
Converts digital tuning data from the FMCS to analog 2 by 5 tuning data for tuning the DME and VOR/ILS navigation units when the autotune mode discrete from the VHF NAV control panel is present. With the autotune discrete absent, the DAA reverts to the manual tuning mode.
D. For additional description, operation and maintenance instructions applicable to the DAA units, (AMM 34-28-01, IRS; 34-55-02, DME; and 34-62-01, FMCS).
16. EFIS Control Panel
__________________
A. The captain's and first officer's EFIS control panels are located on the aft electronics panel (P8). The controls on each panel are subdivided into three sections labelled ADI, HSI and MAP. The MAP section is used with the HSI.
B. The ADI controls are as follows:
(1)
The BRT control is a rotary potentiometer knob for manual EADI brightness adjustment.
(2)
The DH REF readout is a three-digit, LCD display representing selected decision height (DH) in feet.
(3)
The DH set knob is used to select DH. It drives the selected DH REF readout.
(4)
The RST pushbutton switch is used to manually reset the DH alert.
C. The HSI controls are as follows:
(1)
The BRT control consists of two concentric knobs. The outer knob controls the overall EHSI brightness. The inner knob controls the WXR raster brightness on the EHSI.
(2)
The mode selector has seven positions. They are used to select either the FULL NAV, FULL VOR/ILS, EXP NAV, EXP VOR/ILS, MAP, CTR MAP, and PLAN display modes for the EHSI.
(3)
The RANGE selector is a six position rotary switch used to select the weather radar range displayed on the EHSI. The RANGE selector has a traffic control (TFC) push button which engages/disengages the TCAS display on the EHSI when it is pushed.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITH EFIS ú
中国航空网 www.aero.cn
航空翻译 www.aviation.cn
本文链接地址:737-300 400 500 AMM 飞机维护手册 导航 NAVIGATION 2(155)