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ACTION RESULT -------------------------------------------------------------------------------
-move the antenna downward from the top position within approximately 2 seconds to near the level of your ankles.
On the handle of the directional flat test set antenna:
-push the pushbutton switch to stop the power test.
After a short while the display shows:
-
for the top antenna:** POWER TEST ** .................ERP..MTL .TOP AVG (dBm) = .BOT AVG (dBm) = NOT RUN INSTANTANEOUS = XX.X -XX.X Press RUN to start
-
for the bottom antenna: ** POWER TEST ** .................ERP..MTL .TOP AVG (dBm) = NOT RUN .BOT AVG (dBm) = INSTANTANEOUS = XX.X -XX.X Press RUN to start
NOTE : The indicated values in the
____ places of XX.X represent the specific data measured presently.
The display shows:
-
for the top antenna: ** POWER TEST ** .................ERP..MTL .TOP AVG (dBm) = XX.X -XX.X .BOT AVG (dBm) = NOT RUN INSTANTANEOUS = Press RUN to start
-
for the bottom antenna: ** POWER TEST ** .................ERP..MTL .TOP AVG (dBm) = NOT RUN .BOT AVG (dBm) = XX.X -XX.X INSTANTANEOUS = Press RUN to start
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ACTION RESULT -------------------------------------------------------------------------------NOTE : The indicated values should be:
____
-ERP: less than 57.0 dBm and more than 48.5 dBm
-MTL: -73.0 (plus/minus 4.0) dBm.
4.
At the end of the test, push the The display goes off. POWER key.
5.
Close-up
________ Subtask 34-52-00-860-053
A. Put the aircraft back to its initial configuration.
(1)
On the center pedestal, on the ATC/TCAS control unit, set:
-
the ALT RPTG ON/OFF switch to OFF.
-
the ON/AUTO/STBY switch to STBY.
(2)
Do the ADIRS Stop Procedure(Ref. TASK 34-10-00-860-005).
(3) Remove the test antenna and the test set. Subtask 34-52-00-862-054
B. De-energize the aircraft electrical circuits (Ref. TASK 24-41-00-862-002).
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TASK 34-52-00-720-005- 02
Functional Test of the ATC/Mode S Transponder
NOTE : You must do this test very quickly to prevent interference with air
____ traffic. If the test is long, you must tell the nearest airport of this test.
NOTE : For best test results, buildings, vehicles and other aircraft must not
____ be in the area of the main antenna lobe (approx. 30 ft.).
1. Reason for the Job
__________________
Refer to the MPD TASK: 345200-03
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific Mode S/ATCRBS (Air Traffic Control Radar Beacon Sys) test set and user manual
B. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
24-41-00-861-002 Energize the Aircraft Electrical Circuits from the External Power 24-41-00-862-002 De-energize the Aircraft Electrical Circuits Supplied from the External Power 32-00-00-860-002 Ground Configuration after Flight Configuration with
Electrical Power 32-69-00-860-001 Simulation of Flight, with the Aircraft on the Ground 34-10-00-860-002 ADIRS Start Procedure 34-10-00-860-005 ADIRS Stop Procedure
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3. Job Set-up
__________
Subtask 34-52-00-860-094
A. Aircraft Maintenance Configuration
(1)
Energize the aircraft electrical circuits
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