|
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.) |