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Page Title:
Test and inspection equipment and facilities |
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|  MIL-T-22913C(OS)
4.5.1.1 Temperature: Room ambient 65 degrees F to 95 degrees F (18.33
degrees C to 35 degrees C).
4.5.1.2 Altitude: Normal ground.
4.5.1.3 Vibration: Normal.
4.5.1.4 Humidity:
From O up to 95 percent relative maximum, inclusive.
4.5.2 Test and inspection equipment and facilities. The manufacturer
shall furnish and maintain all necessary test equipment and facilities
and shall provide personnel far performing all quality conformance tests.
The test equipment shall be adequate In quantity and, when definite re-
quirements are not specified shall be of sufficient accuracy and quality
to permit performance of the required tests. The following test equip-
ment is required to perform the quality conformance tests of this spec-
ification:
4.5.2.1 AC power supply. (a) Three phase 85 to 120 volts rms ad-
justable, 400 Hz plus or minus 2 percent, 0.5 ampere per line maximum
required. (b) Single phase 5 to 10 volts rms minimum range, 400 Hz
plus or minus 2 percent, 0.1 ampere rms maximum required.
4.5.2.2 DC power supply. (a) 26 volts plus of minus 10 percent, 2.0
amperes maximum required. (b) Six volts plus or minus 10 percent, 15
milliamperes maximum required. This power supply must also be capable
of supplying plus or minus 3 volts dc relative to ground.
4.5.2.3 AC voltmeter, 0-150 volts rms at 400 Hz, minimum impedance
3000 ohms.
4.5.2.4 DC voltmeter, 0-30 volts, minimum resistance 1000 ohms per
volt.
4.5.2.5 Wheat stone bridge, 0-9999 ohms minimum, in steps of one ohm
maximum.
4.5.2.6 Electronic counter
4.5.2.6.1 Frequency measurement section.
4.5.2.6.1.1 Range: 390 to 410 Hz minimum.
4.5.2.6.1.2 Accuracy: Plus or minus 0.1 Hz minimum.
4.5.2.6.1.3 Allowable input signal voltage: 1.20 volts rms. This in-
put signal voltage may be reduced, by means of a potentiometer, to a
15
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