REED ST-8850 Instruction Manual

2, reedinstruments www com 2 Table of Contents Safety .........................................................................................2-3 Features ......................................................................................... 3 Specications ...…

3, REED ST-8850 reedinstruments www com 3 Maintenance & Cleaning • Repairs or servicing that are not covered in this manual should be performed by qualied personnel only. For service on this or any other REED product, contact REED Instruments at [email protected]. • …

4, REED ST-8850 reedinstruments www com 4 Specifications Standard applied: IEC651 type 2, ANSI S1.4 type 2 Frequency range: 31.5Hz~8kHz Measuring level range: 30~130dB Frequency weighting: A/C Microphone: 1/2 inch electret condenser microphone Calibration: Electrical calibration wi…

5, REED ST-8850 reedinstruments www com 5 Instrument & Function Description 1. Windscreen If you operate the unit in an environment with a wind speed over 10m/sec, please put protective accessories (the windscreen provided) in front of the microphone. 2. Display SYMBOL FUNCTI…

6, reedinstruments www com 6 3. Level range select button Lo/Hi Lo: 35~100dB; Hi: 65~130dB When “OVER” is indicated, the ranges switch to another range for measurement. 4. Time weighting select button S/F F (fast response): for normal measurements (fast varying noise) …

7, reedinstruments www com 7 9. DC. AC Output jack Standard 3.5mm 3 pole coaxial output socket. Serves to supply AC signals and log-converted dc signals to external equipment. OUTPUTS: Two outputs can be accessed through a 3.5mm stereo phone plug refer. DC OUTP…

8, reedinstruments www com 8 Operating Instructions Calibration Procedures Using a standard Acoustic Calibrator (94dB, 1kHz Sine wave) 1. Make the following buttons and function switch settings: Display: dB, A, Lo, F Function: A-Weighting Response Time: FAST…

9, REED ST-8850 reedinstruments www com 9 Operating Precautions 1. When wind is blowing across the microphone, this will bring additional extraneous noise. When using the instrument in the presence of wind, use the windscreen (included) to not pick up undesirable signals and provide a more ac…

10, reedinstruments www com 10 Battery Replacement When the battery voltage drops below the operating voltage, the “BAT” symbol will appear in the display. This indicates that the battery needs to replaced with a new one. For service on this or any other REED product or infor…