TIC TR-220 - Page 39

Rev E TR-220 90 008 088-1
2-22
NOTE
20. Toggle the AUTO/TEST/MANUAL switch to MANUAL to advance to the next
sequence:
21. Toggle the AUTO/TEST/MANUAL switch to MANUAL to advance to the next
sequence:
22. To advance, toggle the AUTO/TEST/MANUAL switch to MANUAL. The next test
in sequence will commence.
Max True Spd /
Testing . . .
Test Set verifies the UUT airspeed code by
transmitting an UF=0 interrogation.
Test complete. The DF=0 will report the
aircraft maximum cruising airspeed in the
RI field of the DF=0 format.
Max True Spd /
GT 300 & LE 600 kts
Eight possible RI field codes are available.
1) NO Max airspeed data, 2) LE 75 knots , 3) GT 75 & LE 150 kts., 4) GT 150 &
LE 300 kts, 5) GT 300 & LE 600 kts, 6) GT 600 & LE 1200 kts, 7) GT 1200 kts,
8) Not Assigned.
GT denote “Greater Than”, LE denotes “Less than or Equal too”
Diversity /
Testing . . .
Diversity Test initialized.
Test complete. A PAS
S
indicates that
isolation relative to the active antenna is
greater than 20 dB. and the actual isolation
figure is displayed.
Diversity A02008 /
PASS 26 dB Attn
Sensitivity /
Testing . . .
A: -73.9dB C: -73.9dB
Mode S: -74.4 dB PASS
Test Completed. Display indicates the UUT
receiver sensitivity for mode A (-73.9db),
Mode C (-73.9dB) and Mode S (-74.4dB).
PASS is displayed when Mode A/C/S
sensitivities are within 1dB.
UUT Receiver sensitivity tests (MTL) for
modes A and C are initiated.