Application scope:
1. Main functions
•: Reflection exploration: Analysis of geological structures such as shallow water surface, bedrock burial depth, geological layers, and fault cavities.
•: Refractive exploration: analysis of bedrock burial depth and morphological trend, etc
•: Surface wave exploration: covering layer layering, roadbed, embankment, slope disease investigation, etc
•: Multi wave seismic imaging: foundation, roadbed survey, karst cave survey, etc
•: Site micro motion measurement: vibration monitoring and safety evaluation parameter analysis for sites, work areas, etc
•: Pile testing: Bridge pier and building pile foundation testing, etc
•: Blasting measurement: safety assessment of various blasting vibrations on the site and buildings, etc
•: Cross hole CT: detect underground structures, karst and other geological structures
•: Shear wave measurement: underground geological rock mass Linear elasticity parameter measurement, etc

2. Main Features
•: Can continuously monitor and sample without leakage.
•: 12 integers can be cascaded for expansion.
•: Full frequency noise is constantly monitored for more authentic and effective data collection.
•: Adopting a high-speed and high-precision true 24 bit A/D converter, the sampling rate can reach 10us when sampling 48 channels simultaneously.
•: Equipped with a super large capacity lithium battery, it can work continuously for more than 20 hours at 48 channels of full charge without the need for external power supply.
•: Matching with our company’s coverage switch can make field exploration more convenient and greatly improve field work efficiency.
•: The instrument is equipped with a built-in detection system: self checking for noise, crosstalk, consistency, and other items, and self checking reports are automatically generated.
•: Advanced filters with ultra-low distortion and out of band suppression are adopted, and various digital filters are installed in the software.
•: New exterior design, handheld tablet operation, WIFI communication, with a maximum distance of up to 100 meters, convenient and fast.
•: Equipped with coverage measurement function: SDZ-48A and SDZ-24A can support 24 channel and 12 channel coverage measurements without adding external configurations.
•: The data storage files are in standard Seg2 and SegY formats, supporting various processing software both domestically and internationally, and can be saved in text format, making it convenient for users to process the data themselves.

Performance parameters
3. Main technical indicators
Operating platform: Win10 or Win7 operating system tablet or laptop
Frequency response range: 0.1Hz~16kHz
Sampling delay: 0-9999ms
Noise: less than 0.5 in full frequency state μ V
Inter channel crosstalk: better than 80dB
Amplitude consistency: better than ± 0.1%; Phase consistency: better than ± 5us
Dynamic range: better than 144dB
Trigger method: threshold trigger, internal trigger, external trigger (short circuit, open circuit, signal, etc.)
Sampling rate: 10 μ s. 20 μ s. 50 μ s. 100 μ s. 200 μ s. 500 μ s. 1 ms, 2 ms, 5 ms, 10 ms, 20ms, etc
Sampling points: 512, 1024, 2048, 4096, 8192, 16384, etc., with a maximum record length of 32768;
AD converter: adopts the latest and ultra high speed Σ-Δ 24 bit A/D converter;
Anti aliasing filter: automatically tracking with sampling rate and equipped with various digital filters
Magnification factor: Each set of six channels is available, with options of 1, 4, 16, 64, and 128 times (1/8, 1/4, and 1/2 times can be opened separately according to user needs)
Data format: SEG-2, SEG-Y, TXT
Working power supply: built-in 12V/9A lithium battery, or external 12V battery power supply
Working current: 48 channels better than 1A, 24 channels better than 0.6A
Operating environment: -10 ℃~+60 ℃; Humidity<90% RH
Volume: SDZ-48A, SDZ-24A: 380 * 300 * 200m