The ED 551A Electronic Display unit functions as a Horizontal Situation Indicator (HSI), Attitude Director Indicator (ADI) or Multi Function Display (MFD) used with the EFS-50 system. When the ED 551A is used as an ADI an inclinometer is mounted on the front panel. The high resolution CRT displays converted X-Y axis deflection signals as well as red, green, and blue video signals from the SG-465.
Version 066-03137-3300is a gray EDU with 5VAC/5VDC and HIRF/lightning protection.
规格：
Weight:
9 lb
Dimensions:
9.26 x 5.27 x 4.92 in.
Power requirement:
27.5 VDC @ 2 amps max
Temperature:
-40ºC to 55ºC
Altitude:
55,000 ft. max
特征：
Display Unit used in EFS-50 system
Panel-Mounted
Receives information from aircraft attitude, navigation, guidance, and weather radar system sources
5"" x 5"" color CRT electronic display
Converts X/Y axis deflections signals & red-green-blue video signals form the Symbol Generator
May be used as an EHSI, EADI or MFD
When used as an EADI, an inclinometer is mounted on the front panel
Weather radar can also be displayed on either the EHSI or MFD
Unit has no front panel controls, typically used with the CP-467 control panel
Display receives power directly from the aircraft, does not draw current from the Symbol Generator
Contains an internal fan blower
An airflow sensor within the display unit will generate a fault indication on the display unit if insufficient airflow is detected
