General Tools and Instruments DSM402SD - Manual (Page 10)

SPECIFICATIONS
Display type LCD with green backlight
Display size 2.05 x 1.5 in. (52 x 38mm)
Parameter measured dB
Frequency range 31.5 Hz to 8 kHz
Measurement range 30 to 130 dB in autoranging mode; user can also select fixed
range of 30 to 80 dB, 50 to 100 dB, or 80 to 130 dB
Measurement weighting By frequency and time; frequency weighting uses
“A” or “C” standard; time weighting is fast or slow
(200 ms or 500 ms response time)
Measurement accuracy With “A” frequency weighting: ±3.5 dB @ 31.5 Hz,
±2.5 dB @ 63 Hz, ±2 dB @ 125 Hz, ±1.9 dB @ 250 Hz,
±1.9 dB @ 500 Hz, ±1.4 dB @ 1 kHz, ±2.6 dB @ 2 kHz,
±3.6 dB @ 4 kHz, ±5.6 dB @ 8 kHz
Measurement resolution 0.1 dB
Sampling time options 0, 1, 2, 5, 10, 30, 60, 120, 300, 600, 1800 or 3600 seconds
Settable parameters Date, time, auto power off, beep sound, sampling time,
decimal point or comma decimal division, “A” or “C”
frequency weighting, fast or slow time weighting
Storable readings Maximum, minimum, peak
AC output 0 to 0.5Vrms full-scale in all three manual measurement
ranges
AC output impedance 600 ohms
SD card capacity 1 GB to 16 GB
Operating temperature 32º to 122ºF (0º to 50ºC)
10
Fig. 2. Typical Excel data-only screen
Fig. 3. Typical Excel
graphics-only screen