Velleman DVM1325 Manual De Instrucciones página 3

7. Description of the Front, Side and Back Panels
1. Windscreen
Use the windscreen when the wind-force exceeds 10m/sec.
2. Display
See figure 3 at the bottom of this page.
3. Power Button
Use the - button to switch the device ON or OFF.
4. MAX/MIN hold button
Press this button to activate the MAX/MIN recording mode.
Select the proper level range to ensure that the measured
value does not exceed the measurement range limit. Press
once to select MAX value or twice for MIN value. Press
three times to select the current value with blinking "MAX
MIN" annunciator. Hold this button for two seconds to exit
the MAX/MIN mode.
Note that the MAX/MIN mode will be cleared if you change
the sound level range or if you switch from A- to C-
weighting or vice versa.
5. Frequency Weighting Selection Button
A : A-weighting, for general sound level measurements
C : C-weighting, to check the low-frequency content of the monitored noise. There is a large amount of low-
frequency noise if the value for the C-weighted level is much higher than that for the A-level.
6. Time Weighting Selection Button
FAST : for normal measurements
SLOW : for checking the average level of fluctuating noise.
7. Level Range Control Button
Press this button to switch from the "Lo" level to the "MED" level and then the "Hi" level in that order.
8. Microphone
½" electret condenser microphone
9. CAL potentiometer
10. AC Output Terminal
1Vrms per range step, output impedance ! 100Ω. The output signal is transmitted via a standard 3.5mm coaxial
socket. The signal is located on the pin and the earthing on the sleeve.
11. Battery Cover
Closes off the battery compartment
8. Description of the LCD Display
1. Minimum indication
2. Maximum indication
3. Battery-low indication
4. Sound level readout
5. Underrange indication
6. Fast response
DVM1325
All manuals and user guides at all-guides.com
Fig. 3
3
Fig. 2
7. Slow response
8. A-weighting
9. C-weighting
10. Overrange indication
11. Range indication
VELLEMAN