| LA-1411 |
LA-1441 |
LA-4441 |
| Applicable standard |
IEC 61672-1 : 2013 Class 2
|
IEC 61672-1 : 2013 Class 1 |
|
JIS C 1509-1 : 2017 Class 2
JIS C1516 : 2014 Class 2
|
JIS C 1509-1 : 2017 Class 1
JIS C1516 : 2014 Class 1 |
| Microphone |
1/2-inch backelectret-type
condensor microphone MI-1433
Nominal sensitivity level:-29 dB
|
1/2-inch backelectret-type
condensor microphone MI-1235
Nominal sensitivity level:-29 dB
|
| Preamplifier |
MI-3111 Preamplifier for mocrophone
|
| Linearity range |
100 dB (Wide range), 80 dB (Normal range)
|
| Measurable frequency range |
10 Hz to 8 kHz(IEC, JIS)
|
10 Hz to 20 kHz(IEC, JIS) |
| Measurement level range |
A : 26 to 135 dB(IEC, JIS)
C : 31 to 135 dB(IEC, JIS)
Z : 36 to 135 dB(IEC, JIS)
|
A : 27 to 135 dB(IEC, JIS)
C : 30 to 135 dB(IEC, JIS)
Z : 35 to 135 dB(IEC, JIS) |
| Frequency weighting |
A，C，Z
|
| Intrinsic noise |
A : 15 dB or less
C : 17 dB or less
Z : 25 dB or less
|
A : 16 dB or less
C : 17 dB or less
Z : 24 dB or less
|
| Level range |
20 to 90 dB, 30 to 90 dB, 40 to 100 dB, 50 to 110 dB, 60 to 120 dB (Normal range),
70 to 130 dB, 40 to 120 dB (Wide range)
|
| Time weighting |
FAST, SLOW
|
FAST, SLOW, Impulse, 10 ms |
| Measurement items |
Lp, Leq , LE, Lmax, Lmin, Lpk, LＮ(LHI, L5, L10, L50, L90, L95, LLO, LAV) |
| Level trend |
Ｌp, every kind of calculated value |
Lp, every kind of calculated value
(Read out the displayed value as auto memory recall)
|
| Sampling interval |
31.25 μs (other than LN )
100 ms(LN)
|
20.83 μs (other than LN)
100 ms(LN) |
| Measurement time |
Manual, arbitrary setup (199 h 59 m 59 s max.) |
| Total measurement time |
--- |
Arbitrary setup (199 h 59 m 59 s max.) |
| Start mode |
Manual only |
Manual, timer (Hour,minute), trigger (can be started after a lapse of specified time [0 to 10 seconds, in increment of 1 minute] after trigger detection: trigger delay function) |
| Internal calibration signal (REFOUT) |
1 kHz sine wave (For upper limit level range : -6 dB(normal range), -16 dB(wide range)) |
| Recommended sound calibrator |
SC-2500,SC-3120,SC-2120A |
SC-2500,SC-3120 |
| Display |
LCD with LED backlight semitransparent (124 x 64-dot)
Measurement value display by numeric and bar indicators
List display and trend graph display for various kinds of calculated values
Displays of date, time, measurement time, and conditions of various kinds of instruments |