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
 34-10-00-860-002 ADIRS Start Procedure
 34-10-00-860-005 ADIRS Stop Procedure

R 34-52-00-720-005 Functional Test of the ATC/Mode S Transponder
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 3. Job Set-up
__________ R **ON A/C 106-149, 221-299, 301-399, 401-499,
 Subtask 34-52-00-800-052
 A. Aircraft Configuration
 NOTE : When the aircraft transponders can operate in Elementary
____
 Surveillance or Enhanced Surveillance mode, do the functional test R of the ATC/Mode S transponder. Refer to TASK 34-52-00-720-005-02 R (Ref. TASK 34-52-00-720-005).
 **ON A/C ALL
 Subtask 34-52-00-860-084
 B. Aircraft Maintenance Configuration
 (1)
 Energize the aircraft electrical circuits
 (Ref. TASK 24-41-00-861-002).

 (2)
 Do the ADIRS start procedure (Ref. TASK 34-10-00-860-002).

 (3)
 On the center pedestal:

 (a)
 On the ATC/TCAS control unit, set:

 -
the ATC system 1(2) on.

 -
the ATC code 5555 to keep the traffic interference to a minimum.

 -
the ALT RPTG ON/OFF switch to ON.

 -
the AUTO/ON/STBY switch to ON.

 (b)
 On the SWITCHING panel 8VU:

 -make sure that the AIR DATA selector switch is at NORM.
 Subtask 34-52-00-865-058
 C. Make sure that this(these) circuit breaker(s) is(are) closed:
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU COM NAV/ATC/1 5SH1 G11 121VU COM NAV/ATC/2 5SH2 K07
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R D. Install the ATC-601 test set (version 2.22) or equivalent
 (1)
 Make sure that the test set and the test antenna are in the correct position:

 -
for the test of the bottom antenna: 10 ft. (3 m) approximately from this antenna,

 -
for the test of the top antenna: in the line of sight of this antenna, at less than 200 ft. (60.95 m).

 (2)
 Connect the test antenna to the test set with the coaxial cable.

 (3)
 Put an antenna shield on the bottom antenna during the test of the top antenna.

 (4)
 On the test set:

 -
push the POWER key,

 -
push the SELF TEST key,

 -
push the RUN/STOP key and make sure that the test is satisfactory,

 -
push the SETUP key to record the antenna setup data in the SETUP MENU: . RANGE, HEIGHT, SELECTED antenna and GAIN read on the test antenna.

 4. Procedure
_________
 Subtask 34-52-00-720-052
 A. Functional Test of the ATC/Mode S Transponder.
 NOTE : Do the test of the ATC top antenna 1(2) first with the antenna
____ shield on the bottom antenna. Then, do the test of the ATC bottom antenna 1(2) without the antenna shield. Ignore the indications VS, RI, FS, DR, UM, CA, PI, MV, MB, because they are not related to this test.
 NOTE : For the AIRCRAFT CODE, make sure that the code display agree with
____
 the code "S" given to that aircraft - 6 digits.

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 -------------------------------------------------------------------------------
ACTION RESULT -------------------------------------------------------------------------------
1. On the test set:
 -
push the AUTO TEST key.

 -
push the RUN/STOP key to start the operation of the test set.

2. To know the 19 available, push the SELECT keys and push the RUN/STOP key to start the test.
 -
push the right SELECT key until the REPLY DELAY TEST menu page comes into view.

-
push the right SELECT key.

The data display shows the TEST RUNNINGindication and asterisks on the bottom line. At the end of the test, the AUTO TEST -PASSED, comes into view with these indications: MODE TESTED - A, C, S FREQ: 1090 (+/-1) MHZ MODE PASSED - A, C, S ERP: 54 (+/- 4) dBm MODE FAILED - . . . . MTL: -74 (+/-3)dBm DIVERSITY ISOLATION: more than or equal to 20 dBm Press RUN to start
　
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