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WXR R/T sets the antenna fault.
Disable Switches
The disable switches are on the antenna pedestal. The scan
disable switch disconnects the scan motor from the motor drive.
The elevation disable switch disconnects the elevation motor
from the motor drive. Because the motors disconnect from the
motor drives, the antenna does not move.
CAUTION: AN OPEN DISABLE SWITCH DOES NOT STOP RF
TRANSMISSION FROM THE ANTENNA.
WXR SYSTEM - ANTENNA FUNCTIONAL DESCRIPTION
EFFECTIVITY
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WXR SYSTEM - ANTENNA FUNCTIONAL DESCRIPTION
WXR SYSTEM - ANTENNA FUNCTIONAL DESCRIPTION
EFFECTIVITY
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General
The CPU in the WXR R/T controls the operation of the BITE
module. These are the functions of the BITE module:
* Gets status information from the interface components
* Gets internally monitored data
* Does a self-test when it gets a command from the WXR CP
* Sends a test pattern to the DEUs to show on the ND
* Sends system status data to the DEUs to show on the ND.
Internal Input Monitoring
The BITE monitors these things:
* Over temperature from the power supply
* Control and range from the WXR panel on control bus 0
* Range inputs from the EFIS control panels on control bus 1
and 2
* Antenna scan and elevation position from the CPU.
WXR SYSTEM - WXR R/T BITE - FUNCTIONAL DESCRIPTION
EFFECTIVITY
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WXR SYSTEM - WXR R/T BITE - FUNCTIONAL DESCRIPTION
WXR SYSTEM - WXR R/T BITE - FUNCTIONAL DESCRIPTION
EFFECTIVITY
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General
WARNING: DO NOT OPERATE THE WEATHER RADAR
UNLESS ALL PERSONNEL ARE MORE THAN
50 FT (15 M) FROM THE RADAR. DO NOT
OPERATE THE WEATHER RADAR IN A HANGAR.
IF YOU DO NOT OBEY THESE PRECAUTIONS,
INJURIES TO PERSONNEL CAN OCCUR.
WARNING: IF THERE IS FUEL LEAKAGE OR AN OPEN FUEL
CELL LESS THAN 50 FT (15 M) FROM THE RADAR,
DO NOT OPERATE THE WEATHER RADAR. IF
THERE IS FUEL IN THE 50-FOOT RADIUS AROUND
THE RADAR, IT CAN CAUSE A FIRE AND
EXPLOSION. THESE CAN CAUSE INJURIES TO
PERSONNEL, AND DAMAGE TO EQUIPMENT.
THESE CAN KILL PERSONNEL.
CAUTION: MAKE SURE NO LARGE METALLIC OBJECTS ARE
CLOSER THAN 300 FEET FOR THE 180-DEGREE
AREA IN FRONT OF THE AIRPLANE WHEN THE
RADAR OPERATES. LARGE METAL OBJECTS
CAN INCLUDE HANGARS, TRUCKS, OR OTHER
AIRPLANES. DAMAGE TO THE TRANSCEIVER
COULD OCCUR IF OBJECTS ARE IN THIS AREA.
THIS DOES NOT APPLY WHEN THE WEATHER
RADAR OPERATES IN THE TEST MODE.
Test Preparation
On the WXR control panel, select these functions:
* Set the mode selector to the TEST position.
* Set the tilt control to 0 degrees. (For the WXR-CP 622-5129-
802 and WXR-CP G7407-05 select the ‘‘AUTO’’ tilt swich to
OFF, or WXR-CP 2041223-3135 select the ‘‘TILT’’ switch to
MAN (manual) prior to set tilt control to 0 degrees).
* For Allied Signal and Bendix WXR control panel: Set the gain
control to the Auto position.
On the EFIS control panel, select these functions:
* Set the range selector to the 40 NM position.
* Set the mode selector to the correct ND mode (expanded
APP, expanded VOR, expanded MAP or centered MAP).
Also, adjust the inner ND brightness control to the middle
position.
Test Start
Push the WXR switch on the EFIS control panel to apply power
to the WXR R/T.
WXR SYSTEM - SELF-TEST START
EFFECTIVITY
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WXR SYSTEM - SELF-TEST START
WXR SYSTEM - SELF-TEST START
EFFECTIVITY
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