Downloaded from https://www.everyspec.com MIL-STD-1311D A Audio amplifier INT Integrator G Integrator timing gate M Voltmeter Esig 5,000 Hz signal source RECT 1, 2 Full-wave rectifiers I 1 Indicator, peak channel SW Transfer switch I 2 Indicator, integrated channel 1 - Calibrate 2 - Test FIGURE 1239-1. Noise and microphonics, peak and integrated tests. METHOD 1239 1239-2 19 April 1968