MIL-PRF-83174E
axis normal acceleration; and the output recorded. This procedure shall be repeated with a 1g
cross-axis longitudinal acceleration. The cross-axis accelerations shall not cause the transverse
acceleration output to vary by more than 0.005g.
4.6.7 Voltage variation. Each transmitter shall be tested for accuracy and repeatability in
accordance with 4.6.3 and 4.6.4 at 22.5 and 30V dc.
4.6.8 Magnetic effect. This test shall be conducted first with no power applied to the transmitter
and then with the transmitter operating at rated power. The transmitter shall be held in a
magnetic field with a horizontal intensity of 0.18 ± 0.01 oersted, in various positions, oriented
magnetically east or west, and 12 inches from the center of a 1 to 1.5 inch long free magnet. The
maximum deflection of the magnet shall not exceed 5 degrees. An aircraft compass with the
compensating magnets removed may be used as the free magnet for this test.
4.6.9 Dielectric strength. A potential of 500V dc shall be applied between isolated pins, and
between pins and the case (except pin G), for a period of 10 seconds. There shall be greater than
20 mega ohms of insulation resistance in all cases, and there shall be no breakdown of insulation.
There shall be less than 0.1 ohm between pin G and the case.
4.6.10 Low temperature operational. With power applied, the transmitter shall be properly
connected, placed in a chamber, and maintained at a temperature of -65° ± 4°F for 4 hours.
While at this temperature, the transmitter shall pass the tests specified in 4.6.1 and 4.6.3.1 or
4.6.3.2, as applicable. The output tolerance for the accuracy test shall be ± 0.15V.
4.6.11 High temperature operational. With power applied, the transmitter shall be properly
connected, placed in a chamber, and maintained at a temperature of 160° ± 4°F for 4 hours.
While at this temperature, the transmitter shall pass the tests specified in 4.6.1 and 4.6.3.1 or
4.6.3.2, as applicable. The output tolerance for the accuracy test shall be ± 0.15V.
4.6.12 Output impedance. The transmitter shall be mounted as described in 4.6.3. Full scale
acceleration shall be applied with the output loaded with 1,000 ± 10 ohms. The output voltage
shall not change from the unloaded output voltage by more than the unloaded output voltage x
0.5 ohm ÷ 1,000 ohms.
4.6.13 Electromagnetic interference. The electromagnetic interference tests shall be conducted
in accordance with the following test methods from MIL-STD-461E. The transmitter shall not
exhibit any malfunction, degradation of performance, or deviation from specified indications,
beyond the tolerances indicated in this document when subjected to the conditions described
below.
4.6.13.1 CS101. The transmitter shall be tested at the limit level given in Figure 3 using the test
method described in MIL-STD-461E, Section 5, Method CS101.
4.6.13.2 CS114. The transmitter shall be tested at the calibration limit level given in Figure 4
using the test methods described in MIL-STD-461E, Section 5, Method CS114.
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