|
LA-7700 Class1
|
LA-7500 Class1 |
LA-7200 Class2 |
| Applicable standard |
JIS C 1509-1: 2017 Class1
JIS C 1516 : 2014 Class1 |
JIS C 1509-1: 2017 Class2
JIS C 1516 : 2014 Class2 |
| IEC 61672-1: 2013 Class 1 |
IEC 61672-1: 2013 Class 2 |
| ANSI S1.4-2014/Part1 Class1 |
ANSI S1.4-2014/Part1 Class2 |
| Measurement frequency range |
10 Hz to 20 kHz |
10 Hz to 20 kHz
1 Hz to 20 kHz*1 |
10 Hz to 8 kHz |
Measurement level range (IEC, JIS)
|
A: 20 to 128 dB
C: 28 to 128 dB
Z: 34 to 128 dB
|
A: 24 to 138 dB
C: 32 to 138 dB
Z: 38 to 138 dB
Z: 50 to 138 dB *1
G: 35 to 138 dB *1
or more*1
|
A: 23 to 138 dB
C: 30 to 138 dB
Z: 36 to 138 dB |
| Self-noise level |
A: 12 dB or less
C: 20 dB or less
Z: 26 dB or less |
A: 16 dB or less
C: 24 dB or less
Z: 30 dB or less
G: 27 dB or less*1
|
A: 17 dB or less
C: 24 dB or less
Z: 30 dB or less |
| Microphone |
MI-1281 |
MI-1271 |
MI-1471 |
| Microphone preamplifier |
MI-3270 |
| Linearity range |
Wide range: 110 dB / Normal range: 80 dB |
| Level range |
10 to 120 dB (wide)/50 to 120 dB/40 to 110 dB/30 to 100 dB/20 to 90 dB/10 to 80 dB/0 to 70 dB |
20 to 130 dB (wide)/60 to 130 dB/50 to 120 dB/
40 to 110 dB/30 to 100 dB/20 to 90 dB/10 to 80 dB |
| Reference range |
50 to 120 dB |
| Time weighting e.g.: LAF |
F (fast), S (slow), I (impulse) and 10 ms |
F (fast), S (slow),
I (impulse), 10 ms and 10 s*1
|
F (fast), S (slow), I (impulse) and 10 ms |
| Frequency weighting e.g.: LAF |
A, C and Z |
A, C, Z and G*1 |
A, C and Z |
| Measurement items |
Lp, Leq, LE, Lmax, Lmin Lpeak,
LN (L5, L10, L50, L90, L95, Lhigh, Llow, Lave, and two more of any LN data) |
| Sampling interval |
15.6 µs (Lp, Leq, LE, Lmax, Lmin, Lpeak), 100 ms (LN) |
| Measurement time |
e.g.: If you want to measure a fixed 10-minute period every hour,
and wish to measure this for 24 hours,
M.T:10 minutes, P.T: 1 hour, and T.T: 24 hours |
| |
Measurement time
(Meas.Time) |
Manual (OFF), user-specified setup: 0.1 to 199 hour 59 min. 59.9 sec. resolution: 0.1 sec. |
Period time
(Period Time) |
1 min. to 24 hours / resolution: 1 min. |
Total Time
(Total Time) |
0.1 sec. to 999 hour 59 min. 59.9 sec. / resolution: 0.1 sec. |
| Start mode |
Manual start, timer start, count down start, level start |
| Display device |
4.3-inch LCD with color backlight (touch panel type) |
| |
Digital display |
4-digit/ resolution: 0.1 dB/ update cycle: 1 s |
| Bar indicator |
Wide range: 100 dB of display range/ Normal range: 70 dB of display range |
| Remaining battery level display |
4-step display |
| Operation mode |
(Online) mode |
Standard :SLM-single, Dual, Quad, Filter 1/1, RTA1/1
Option :Filter 1/3 (LA-0702), RTA 1/3 (LA-0702), FFT (LA-0703), LSIM (LA-0707), SQE stationary sound (LA-0708A) |
|
Offline mode
(LA-0704
required)
|
Standard: SLM-single, Dual, Quad, Filter 1/1, RTA1/1 Option: Filter 1/3 (LA-0702),
RTA 1/3 (LA-0702), FFT (LA-0703)
|
| Overlay display |
Overlay display |
Standard: RTA 1/1 Option: RTA 1/3 (LA-0702) |
| Background noise correction |
Standard: RTA 1/1 Option: RTA 1/3 (LA-0702) |
| Memory function |
Stored in an SD/SDHC card (SDHC card: up to 32 GB.) |
| |
Memory mode |
MANUAL (CSV file)………………………………………………………………………standard function
AUTO (instantaneous value, calculated value, CSV file)………………standard function
LOGGING (instantaneous value, 10 ms or 100 ms, CSV file)……….standard function
RECORD (WAVE file: 64 kHz sampling)……………….………………………required for the LA-0704
|
| Panel condition memory |
Internal memory (internal condition : 5, EZ condition : 5, power off memory : 1),
SD or SDHC card memory (number : depends on the capacity) |
| Basic measurement mode |
5 modes (EZ1: LAeq+LCpeak, EZ2: Record, EZ3: Logging 100 ms, EZ4: NC, EZ5: Loudness) |
| Clock function
|
Built-in (year/ month/ day/ hour/ minute)
Continuous operation time : approx. 1 year (charging time: 24 hours from entire discharge state)
|
| Calibration history function
|
Built-in memory (number of stored points: approx. 100 points),
Content (Calibration value, VR position for control, internal reference signal of
used sound calibrator, calibration date)
|
| Resume function |
Stores measurement conditions into the built-in memory |
| Calibration |
Reference signal (when connecting external device) |
Electronic calibration by built-in transmitter (1 kHz sine wave)
Normal range: -6 dB of full-scale
Wide range: -16 dB of full-scale
|
| Recommended calibrator |
SC-2500 |
SC-3120, SC-2500 |
SC-3120, SC-2500, SC-2120A |
| Output/Input |
Phone output (headphone output) |
Actual sound or recorded sound (playback sound)
Selected 1 band of actual sound or recorded sound (playback sound) in 1/1 octave filter (standard function) or 1/3 octave filter mode (option: LA-0702)
When "UD" of level simulator (LSIM: LA - 0707) is selected, level editing sound. When "AP" is selected, the real sound.
Maximum output : 0.03 mW (63 Ω: at 1kHz)
Connector : stereo φ3.5
|
| AC output |
Outputs one of A, C, or Z interlocked with the main display |
| |
AC output level |
Output level : 0.707 Vrms ±5 (normal range), 2.236 Vrms ±5 (wide range)
when range full-scale input,1MΩ loaded
Distortion rate (range full scale) : 0.2 % or less
Load resistance : 10 kΩ or more
Offset voltage : ±30 mV or less
Output impedance : 50 Ω± 2%
|
| AC/DC output |
Selectable form DC, AC-Z or Through |