Cal. Code Regs. Tit. 13, § 1024 - Instrumentation for Testing

Equipment used to test sirens shall meet the following requirements:

(a) Sound Measuring System. The sound measuring system shall meet the requirements of SAE J184a, June 1978.

(b) Octave Band Analyzer. The octave band analyzer shall meet the requirements of ANS S 1.11-1966.

(c) Turntable. The turntable shall have a diameter of at least 300 mm (12 in.) and shall operate at a constant speed.

(d) Test Fixture. The fixture used for electromechanical and electronic siren tests shall be a rigid tripod 1.20 m ± 50 mm (4 ft ± 2 in.) in height, constructed of 13-mm (0.5-in.) tubular material, mounted on a turntable, and fitted with a 300-mm (12-in.) square platform.

(e) Wattmeter. The wattmeter for measuring amplifier output shall be a Weston Model 310 Form 3, or equal, with a frequency range from dc to 1600 Hz, field ratings of 10 A and 62.5 V, a scale range of 250 W, and 1% accuracy.

Notes

Cal. Code Regs. Tit. 13, § 1024

1. Editorial correction of NOTE (Register 81, No. 44).

Note: Authority cited: Section 26103, Vehicle Code. Reference: Sections 26103 and 26104, Vehicle Code.

1. Editorial correction of NOTE (Register 81, No. 44).