TIC TR-220 - ATCRBS, Mode A;C Manual Testing; Transponder Manual Sequence of Tests

Rev E TR-220 90 008 088-1
2-14
2.12 Transponder Manual Sequence of Tests
NOTE
When conducting tests in the MANUAL sequence, the operator initializes the sequence by
toggling the AUTO/TEST/MANUAL switch to the MANUAL position. The Test Set then
commences a series of tests and displays the individual results of each test (see figure 2-8)
ending in the POWER, RECEIVER EFFICIENCY and FREQUENCY page. After each test is
completed, the operator must toggle the MANUAL switch to advance to the next test in the
series.
The “IDENT” feature of a transponder can only be tested during the MANUAL sequence of tests.
See paragraph 2-14 for detailed instructions.
2.12.1 ATCRBS, Mode A/C Manual Testing
1. Utilize the procedures as outlined in paragraph 2.9 to select the preferred
antenna method for the following tests.
2. Turn the Test Set “ON” by toggling the ON/OFF switch to the ON position.
Ensure the green LED illuminates.
3. The Test Set commences the Self Test. “PASS” is displayed briefly if no failures
are detected.
4. Turn the UUT FUNCTION switch to the XPDR position. The Test Set will
automatically determine the transponder capability as being Mode A and/or C
capable and display the appropriate start page.
5. Toggle the AUTO/TEST/MANUAL switch to the MANUAL position to begin the
sequence.
Self Test
PASS
M A /
Testing . . .
All illustrations shown are for demonstration purposes. Though the test
results may be typical, they are not meant to replace FAA guidelines and
manufacturer recommendations.
Mode A Test initialized.
Capab Mode A/C
Press A/M