| Electrical Specification | ||||
|---|---|---|---|---|
| Microphone | ||||
| Parameters | Units | Min | Typ. | Max |
| Impedance | ohm | 127.5 | 150 | 172.5 |
| Sensitivity (Original) | -56 dBm Min, @1kHz, 25 from 28 dynes/cm² source (103 dB SPL) | |||
| Sensitivity (Equivalent) | -73.2 dBV Min, @1kHz, 25 from PA source (94 dB SPL) | |||
| THD (Distortion) | % | 5% | ||
| Signal-to-Noise | dB | 17 | ||
| Voltage | V | 1.2 | 20 | |
| Speaker @ 1 Inch, 1 Milliwatt | ||||
| Impedance | ohm | 900 | 1,000 | 1,100 |
| SPL (20Hz to 3.5kHz) | dB | 104 | 112 | |
| SPL (3kHz to 9kHz) | dB | 110 | ||
| Distortion (THD+N) | % | 5 | ||
| Ruggedness | Will not change more than 3dB from original response curve when operated at 300mW level 1000 Hz, for a Period of 8 hours. | |||
| PITT SWITCH | ||||
| Cycle Life | Cycles | 2,000,000 | ||
| Rating @ 12 VDC | mA | 50 | ||
| Mechanical Specifications | ||||
|---|---|---|---|---|
| Parameters | Units | Min | Typ. | Max |
| Mass | lbm | 2 | ||
| Cable Pull from Handset, Axial | lbf | 33 | ||
| Cable Pull from Connector, Axial | lbf | 25 | 40 | |
| Cable Flex at Each End (2 lbm Wt.) | Cycles | 18,000 | ||
| Cable Elongation (3%) | Cycles | 15,000 | ||
| Environmental Specifications | |
|---|---|
| Operating Temperature | -40℃ to +65℃ |
| Storage Temperature | -55℃ to +70℃ |
| Thermal Shock | 2 Hrs @ -40 / 2 HRS 2:@+158 [70] Six Cycles, 24 Hrs Total |
| Humidity | Method 507.5, Procedure I, Cyclic High, B2 for 6 cycles, followed by a 24 hr dryout |
| Altitude | 50 kft for 2 hours, followed immediately by 2 hours @ 10 kft. |
| Immersion | 1 meter for 30 mins (24 hour recover allowable) |
| Vibration | MIL-STD-202, Method 201, 2 hrs in each of 3 planes |
| Mechanical Shock | Drop test : 2 from 72” onto tiled concrete |
| Bounce | Method 514.6, Procedure II |
| Salt Fog |
Method 509.5, 96 hrs total, 2x 24 hrs exposure w/ 24 hrs dryout between each |
| Dust | Method 510.5, Procedure I |
| Fungus Resistance |
MIL-HDBK-454, Guideline 4, Group 1 |
| Packaging | Each Handset assembly to be placed in individual bag. Bag will be boxed. |