IFR NAVAIR NAV-750

NAVAIR 17—2OAX—737
CALIBRATIONCHECKLIST
*Applicable only if TI is a NAV—750B. Page 4 of 8
I
TEST INST (S) IFR Inc. NAV-750, NAV-750A, and NAV-750B VOR/LOC/COMMand G/S Bench Test Sets
PROC. NO. NA 17-2OAX-737 MFG. MODEL SER. NO.
PROCEDURE
STEP
NO.
(1)
FUNCTION TESTED
(2)
NOMINAL
(3)
MEASURED VALUES OUT
OF
TOL
~
CALIBRATION TOLERANCES
(7)
FIRST RUN
(4)
SECOND RUN
(5)
(Hz) (Hz)
(Hz)
4.5.27*
400 400.0 397.2 to 402.8
4.5.29*
1300 1300.0
—
1290.9 to 1309.1
4.5.31* 3000 3000.0 2979.0 to 3021. 0
4.6 Tone Distortion Tests
(Hz)
4.6.3 30 REF -— ck () — ~0.5% thd
4.6.7 90 —— ck () <0.4% thd
4.6.9 90 —— ck () — ~0.4% thd
4.6.12 150 —— ck () <0.4% thd
4.6.14 150 —— ck ()
—
— <0.4% thd
4.6.17 30 Variable —— ck () — <0.5% thd
4.6.20 1020 —— ck ()
— 0.5% thd
4.6.23 400 —— ck () — <0.7% thd
4.6.25 1300 —— ck () — ~0.7% thd
4.6.27 3000 —— ck () <0.7% thd
4.7 Percent Amplitude Modulation )f Tones and
4odulation teter Tests
4.7.4 30% AM — 30Hz 30.0% 28.8% to 31.2%
4.7.5 0—30 Meter Scale
—— ck () ±1.2% (AM) of step 4.7.4
4.7.7 30 Hz variable —— ck ()
—
>60%
4.7.10 1020 Hz variable —— ck () >60%
4.7.13 30% AM — 9960 Hz 30.0% 28.8% to 3 1.2%
4.7.15 9960 Hz variable —— ck ()
>60%
4.7.19 20% AM — 90 Hz 20.0% 19.2% to 20.8%
4.7.21 20% AM — 150 Hz 20.0% 19.2% to 20.8%
4.7.22 0—30 Meter Scale —— ck ()
±0.8% (AM) of step 4.7.2 1
4.7.24 40% AM — 90 Hz 40.0% 38.4% to 41.6%
4.7.26 40% AM — 150 Hz 40.0%
“
4.7.27 0—100 Meter Scale —— ck ()
—
— ±1.6% (AM) of step 4.7.26
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