Guralp Systems

모델명 : 40TDE

제품용도 : 지진계(Broadband Digital Seismometer)

40TDE

▶SYSTEM

•Configuration / Topology: Triaxial orthogonal (ZNE)
•Feedback: Force feedback.

 

▶SENSOR ?PERFORMANCE

•Response: 60 s to 100 Hz standard (other options available)
•Output sensitivity / Clip Level: 2 x 1600 V/ms-1 (other options available)
•Cross axis rejection: >65 dB
•Linearity: >90 dB
•Lowest spurious resonance: >450 Hz

 

▶CALIBRATION

•Type: Pulse, sine wave and broadband
•Calibration controls: Sine, step or broadband(adjustable amplitude and frequency)

 

▶MASS / MASS MONITORING

•Locking: No mass locking required
•Mass recentring range: ±3° from horizontal 

 

▶CONTROL

•Mass control / locking: Remote offset zeroing

 

▶DISITISER PERFORMANCE

•Digitiser type : Fourth-order sigma-delta 

•Digitiser resolution : 24-bit 

•Dynamic range : > 140 dB at 20 samples per second, > 136 dB at 40 samples per second, > 135 dB at 80 samples per second???

•Sample rate: 1 to 1000 samples per second (up to four simultaneous streams with different sample rates available) 

•Digital filter types: FIR (linear phase) and IIR (for low latency mode) 

•Decimation filters: 2, 4, 5, 8, 10 

•Anti-aliasing filter at Nyquist: > 160 dB

•Absolute accuracy: < 0.15 % 

•Crosstalk(out of band rejection): 140dB 

•Linearity: 110dB at 80 samples per second 

 ?

▶USER INTERFACE / SOFTWARE 

•Digitiser control and configuration: Güralp Scream! software (free download)

•Triggering modes: STA/LTA, level, external, software. Per channel voting and network voting 

 

▶REAL TIME DATA COMMUNICATION

•Interface/connections: Ethernet, USB

•Protocols: GCF(Scream!), SEEDlink, CD1.1 and GDI-link 

 

▶ON-BOARD DATA STORAGE

•Internal storage capacity: 16GB flash memory, optional up to 64GB available

•Data recording?: GCF?? and miniSEED

 

▶POWER

•power voltage range : 11-30VDC

•power consumption : 2.7W(without GPS or Ethernet)

 

▶PHYSICAL/ENVIRONMENTAL

•Operating temperature: -20 to 75°C

•Operating humidity: 0 to 100%

•Enclosure ingress protection: IP68

•Weight: 9.2kg

 

▶지진계 모델별 주파수 범위 및 노이즈 자료