REED SD-4023 Quick Manual

BUILT ​
b uilding science lab to advance teaching
QUICK SHEET
REED Sound Level Meter (SD-4023)

LOCATION of EQUIPMENT:

Hardware: See lab attendant

INSTRUCTIONS FOR USE:

1. Turn the meter on by pressing the power button. Hold the power button to turn the device off.
2. Select your ​ f unction​ . . The meter's function defaults are set to "Auto Range, "A Frequency
Weighting", and Fast Time Weighting". The screen will display "A. Fast Auto".
a. Switch between "A" or "C" Frequency Weighting by pressing the "A/C Button".
b. Determine proper measuring range by pressing the Range Button. Press the Range
Button to scroll through the Four range types. There are three manual ranges (range 1,
range 2, range 3) and auto range in this sequence:
Range 1: 30 - 80 dB range
Range 2: 50 - 100 dB range
Range 3: 80 - 130 dB range
c. Select the Time Weighting (Fast or Slow) by pressing the Time Weighting Button. The
screen will display either "FAST" or "SLOW", depending on your selection
3. Data Hold:​ While taking a measurement, press the Hold Button once and the measured value
will hold on the screen, and a HOLD symbol will appear. Press the Hold Button once again will
release the data hold function.
4. The ​ d ata record​ function records the maximum and minimum readings.
a. Press the REC Button once, and a "REC. MAX." symbol along with the maximum value
will appear on the display. To delete the maximum value, press the Hold Button once and
the display will show a "REC." symbol only and execute the memory function
continuously.
b. Press the REC Button again, and a "REC. MIN." symbol along with the minimum value
will appear on the display. To delete the minimum value, press the Hold Button once, and
the display will show a "REC." symbol only and execute the memory function
continuously.
c. To exit the memory record function, press the REC button for 2 seconds. The display will
revert to the current reading.
5. Data Logging​ function:
a. Insert the optional SD card into the SD card socket.
b. Auto Datalogger ​ (Set sampling time ≥1 second)
i. Start Datalogging; press the REC Button, and the "REC" symbol will appear on
the LCD screen, then press the Logger Button, the "REC" symbol will flash while
the measuring data and time information is being saved in memory. To set the
sampling time, and to toggle the beeper sound on or off, refer to the Advanced
Settings section of this manual.
ii. Pause the Datalogging; while Datalogging, if press the Logger Button once.
While paused, the "REC" symbol will stop flashing. Press the Logger Button
again to resume Datalogging, and the "REC" symbol will begin to flash again.
1914 SW Park Ave Room 201 PSU School of Architecture Portland, OR 97207