Werbung
Verfügbare Sprachen
Verfügbare Sprachen
3. Operation
2.2 Measuring Sound Levels
Sound levels are displayed both digitally and in a bar graph. The digital display is updated
every 500ms, while the bar graph is updated every 50 ms.
Press the ON/OFF key to turn the meter on. The unit will first display the full screen and
then count down to zero. The meter will now begin measuring the current sound levels.
Point the microphone toward the source of the sound to be measured.
2.3 Selecting A and C Weighting
When you turn the meter on, it will be in A weighting mode. A weighting enables the
meter to respond in the same manner as the human ear, which increases and decreases
amplitude over the frecuency spectrum. Applications for A weighting include OSHA
regulatory testing, environmental measurement, workplace design, and law enforcement.
C weighting is suitable for flat response measurements with no increase or decrease of
amplitude over the frecuency spectrum. Applications for C weighting include the sound
level anaysis of engines and machinery.
Press the C/A key to toggle between A and C weighting. A small A or C will be displayed
on the right side of the screen to indicate the current mode.
2.4 Selecting the Response Time
You can select fast or slow response time to suit different applications and standards.
For example, most OSHA-related testing is done using slow response time and A weighting.
When you turn the meter on, it will be in fast response mode. Press the F/S key to toggle
between fast and slow response. A small FAST or SLOW will be displayed on the right
side of the screen to indicate the current mode.
2.5 Freezing the Maximum Sound Level Reading
1. Press the ON/OFF key to turn the meter on.
2. When measuring sound levels, press the MAXHLD key to freeze the maximum reading.
MAX HOLD will be displayed. The digital display will remain unchanged until a higher
reading is detected. Note that the bar graph will continue to record the current reading.
3. Press the MAXHLD key again to exit maximum hold mode.
Manual instruction
12
Werbung
Kapitel
