| LA-7700 Class1 | LA-7500 Class1 | LA-7200 Class2 |
| Applicable standard | JIS C 1509-1: 2017 Class1 JIS C 1516 : 2020 Class1 | JIS C 1509-1: 2017 Class2 JIS C 1516 : 2020 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, L N (L5, L10, L50, L90, L95, Lhigh, Llow, Lave, and two more of any LN data) |
| Sampling interval | 15.6 µs (Lp, Leq, L E, 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) |
| | Standard | : SLM-single, Dual, Quad, Filter 1/1, RTAl/1 | | Option | : Filter 1/3 (LA-0702), RTA 1/3 (LA-0702), FFT (LA- 0703), LSIM (LA-0707) *SQE stationary sound (LA-0708A) is not available. |
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| 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) |
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| 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 |
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| 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-2600,SC-2500A | SC-2600,SC-2500A | SC-2600,SC-2500A, 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% |
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| AC/DC output | Selectable form DC, AC-Z or Through |
| DC output level | 2.5 V ±20 mV (normal range, wide range) when range full-scale input,1MΩ loaded| Scale factor | : 0.25 V±10 mV/10 dB | | Load resistance | : 10 kΩ or more | | Output impedance | : 50 Ω ± 2% |
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| AC-Z 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% |
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| Through output level | 0.707 Vrms ±5 % (normal range/ wide range) when full-scale input, 1MΩ loaded Distortion rate (range full scale): 0.2% or less |
| External control input | | Operation | : Reset and start | | Control voltage | : non-voltage contact input | | Input pulse width | : 200 ms or more | | Absolute max. input voltage | : 24.0 V |
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| Level judgment output(*LA-0705) | Open collector (output withstand voltage : DC+24V or less, sink current : 20mA or less) *Output cable (Multi I/O -BNC connector 2 m) : provided as standard |
| Level judgment comparison item | SLM mode (Main : Lp), Filter 1/1,1/3 (Main (BP) : Lp), RTA1/1,1/3 (AP1 : Lp), FFT (OVERALL : Instant) |
| Interface | RS-232C | Baud rate: 9600, 115200 bps, multi I/O cable (sold separately) |
| USB | Compliant with USB high speed storage class specification ver. 2.0,| USB connection calbe | : USB (A) male-USB (mini) male (sold separately) | | Function | : Command control or mass storage*2 |
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| External memory | SD/SDHC memory card (SDHC : up to 32 GB)*3 |
| Applicable extension cable (for microphone extension) *4 | 103 m (CE conforming cable: up to 30 m)…AG-3400 series *Cable extension exceeding 5m : with correction function. |
| Power supply | · Size AA battery (alkaline battery cell or Ni-MH secondary vattery) x 4 pieces · USB bus power (operating input voltage range: 4.75 to 5.25 VDC) · AC adapter (PB-7090, power consumption: approx. 7 VA when using 100 VAC) |
| External power operation function | The main unit is activated automatically when the power is supplied from an AC adapter. (This function is not available by battery cells.) Switch on/off can be done with the switch in the battery box (standard function) |
| Windscreen correction function | Function to correct the influence of windscreen (φ70)/ All-weather type windscreen (LA-0207A) LA-7700 : all-weather type windscreen cannot be used with |
| Battery life (continuous use) *5 | Alkaline battery cell LR6 : approx. 12 hours Ni-MH secondary battery: approx. 12 hours |
| Operating (storage) temperature range | -10 to 50 °C (-20 to 60 °C) |
| Operating (storage) humidity range | 20 % to 90 %RH (10 % to 90 %RH ) with no condensation |
| Outer dimensions | Approx. 90(W)×279(H)×42(D) |
| Weight | Approx. 540 g (including batteries) |
| Accessories | ·AC adapter (PB-7090)*6 ·Hand strap ·SDHC memory card (16G) | ·Signal cable (AX-501) ·Size AA battery cell x 4 pieces ·Iinstruction manual (CD) | ·Windscreen (φ70 mm) ·Carrying case (including shoulder belt) ·Setup guide |
