A-DZQ12A high resolution seismograph main applications:
1. Refraction & reflection survey----- Bedrock layering and buried depth, hydraulic engineering advanced geological foundation investigation etc.
2. Surface wave investigation-------Overburden layer stratification survey, weathering zone investigation, underground cavities and disease geologic body prospecting, roadbed, road-dam, slop damage survey and so on.
3. Multi-wave high density seismic imaging------ Foundation and roadbed cavities prospecting, karst survey etc.
4. Field aseismic design survey-------- High-rise building and bridge vibration detection, basis investigation and safety estimation.
5. Civil engineering quality inspection------ Bridge piers and building piles detection etc.
6. City vibration and explosion safety estimation------Various explosion and vibration safety monitoring etc.
7. Shear wave measurement------Rock mass elasticity and mechanical parameters measurement etc.

Features:
1.Many seismic methods:surface wave,high density seismic imaging,pulse measurement,refraction and shear wave measurement,city vibration and explosion safety estimation,pile detection etc.
2.Worked in the system of Windows,it is felxible,use-friendly,strong functions and easy operation.
3.Large dynamic range and high technical parameters to satisfy city prospecting requirement and supply one more choice for field survey.

Main parameters: 
1. Simulation channels: 48 channels (1, 2, 3, 4, 6, 12, 24, 48 channels working modes optional) 
2. Sampling rate: 10μs, 31.25μs, 62.5μs, 125μs, 250μs, 500μs, 1ms, 2 ms, 4 ms, 8 ms, 16 ms, 32 ms~400 ms some etc.
3. Sampling points: 512, 1024, 2048, 4096, 8192, 16384 etc, the longest record: 32768.
4. Preamplifier gains: each 6 channel as 1 group, 64 times (36dB), 16 times(24dB), 4 times(12dB) and 1 time optional;
5. A/D transformation: newest & super high speed Σ-Δ 24 bites A/D transformer.
6. Anti-alias filter: Auto tracking as sampling rate; -3dB(when at sampling rate 0.216 times), below to 120 dB; also matches all kinds of digital filter, critical frequency point(at -3dB) set manually upon the requirement;
7. Frequency response range: 0.1 to 4 KHz.
8. Noise: Less than 1 μV(in full frequency status)
9. Delay time: 0 to 9999 ms.
10. Amplitude inconsistence: superior to±0.02%
11. Phase consistence: Superior to ±0.01ms
12.Dynamic Range: superior to 144dB
13. Signal superposition reinforce: 32 bites
14. Operation system: WinXP
15. Data format: SEG-2, SEG-Y, CSP
16. Trigger: you can use hammering switch, explosion, and electric spark to trigger or break the cable and connect the trigger.
17. Clock: annual time clock, the time record by the file together with parameter is saved into the file.
18. Power: 12V±20% supplied by battery; whole power consumption: less than 4A (When working 48 channels, LCD super light, it is 5A).
19. Operation temperature: -10~+55℃; 
20. Storage temperature: -20~+60℃, humidity: 90% RH.