Ada ZSM 130+ А00112 [27/36] Zsm 130

ZSM 130+

MEASUREMENT FOUNDATION

С C-Weighting

Lo Low Range (35~100dB)

Hi High Range (65~130dB)

BAT Low-Battery

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)

S (slow response): for checking average level of uctuating noise

5. Power and Function Switch

Turn power ON/OFF and select A/C weighting & calibration function

A: A – Weighting. For general sound level measurements.

C: C – Weighting. For checking the low- frequency content of noise.

(If the C-Weighted level is much higher than the A-Weighted level, then there is a large

amount of low-frequency noise)

CAL 94dB: Calibration using the internal oscillator

6. MAX Hold button: MAX

The max. Hold position is used to measure the maximum level of sounds. The maximum measured level is up dated