General-tools-and-instruments DSM403SD Uživatelský manuál stáhnout pdf (Strana 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 16 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, using Class 1 IEC 61672 standard;

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: ± 2.0 dB @ 31.5 Hz, 1.5 dB @

63 Hz, 1.5 dB @ 125 Hz, 1.4 dB @ 250 Hz, 1.4 dB @ 500 Hz,

1.1 dB @ 1 kHz, 1.6 dB @ 2 kHz, 1.6 dB @ 4 kHz, +2.1 dB

and -3.1dB @ 8 kHz; +3.0 dB and -6.0 dB @ 12.5 kHz,

+3.5 dB and -17.0 dB @ 16 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

Fig. 2. Typical Excel data-only screen

Fig. 3. Typical Excel

graphics-only screen

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General-tools-and-instruments DSM403SD Uživatelský manuál Strana 10