MIL-T-27/9B
No load (center-tap voltage unbalance only): With 173 V, 1,000 Hz across (1-3) and .020 ampere dc through terminal 2:
Unbalance (4-5) and (6-7): 1 percent, maximum. Unbalance (1-2) and (2-3): 1 percent, maximum.
Secondary load impedance: (4-5) - 150 ohms.
(6-7) - 150 ohms ±10 percent. (4-7) - 600 ohms ct.
Primary impedance: With approximately 30 V, 1,000 Hz across (1-3) and .020 ampere dc though terminal 2 and 600 ohms ct across (4-7), the primary impedance shall be 15,000 ohms ct
±10 percent across (1-3). Frequency response:
Range: 300 to 10,000 Hz at rated power, flat within ±2 dB, reference frequency = 1,000 Hz; test voltage 30 V rms (1-3).
Insertion loss: 1.5 dB maximum, with 173 V, input at 1,000 Hz across (1-3). Resonance: Second resonant frequency = 20,000 Hz, minimum.
Polarity: Additive with terminals 3 and 4, and 5 and 6 connected.
Temperature rise: 20°C maximum, above an ambient of 85°C, with rated power at 300 Hz. Vibration (high frequency): MIL-STD-202, method 204, test condition B.
Shock (specified pulse): MIL-STD-202, method 213, test condition I. Part or Identification Number (PIN): M27/9-01A or -01B.
TABLE I. Cross reference.
Mounting |
MS90006B |
M27/9 |
Dash no. |
Dash no. |
|
Studs |
-A |
-01A |
Inserts |
-B |
-01B |
NOTE: Qualification approval to MIL-T-27/9 shall be sufficient to grant qualification approval to MIL-T-27/3 through
MIL-T-27/8.
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