Japan, Tokyo Sokushin
Tokyo Sokushin SAMTAC-802C Digital Data Recorder
Product: made in Japan
Manufacturer: Tokyo Sokushin
Model: SAMTAC-802C Digital Data Recorder
Survey of an underground structure
After-shock, micro-earthquake and microtremor measurement
SAMTAC-802 series
24bit, 3 or 6 channels
26 hours operation by internal battery Storage media:
CF card: SAMTAC-802C
Hard Disk: SAMTAC-802H
SAMTAC-802C, 802
| Pre Amp | |
| Channels | 3 channels(CF card: 802C-3 / HDD: 802H-3) 6 channels (CF card: 802C-6 / HDD: 802H-6) |
| Input | Differential |
| Input impedance | 100kΩ |
| Gain | 0, 20, 40, dB |
| Range | ±10.24V at 0dB |
| Offset Drift | 0.25μV / ℃ |
| Noise | 4μV /(rms) |
| Low-pass Filter | fo = 200Hz, 18dB / Oct |
| AD converter | |
| Resolution | 24bit |
| Dynamic Range | 130dB |
| Bandwidth | 0 to 0.8Nyquist Digital Filter |
| Sampling Rate | 50, 100, 200, 400, 500Hz |
| Full scale Error | 1% |
| Full scale drift | 60μV / ℃ |
| Triggering | |
| Mode | Micro tremor / Earthquake |
| Level trigger | 1mV ~ 9.999V (1mVstep) AND, 2AND, OR |
| Pre-event memory | 0 to 255sec. |
| Post-memory | 0 to 255sec. |
| Timing | |
| Base | ±0.05PPM (MCXO) |
| Synchronization | GPS |
| GPS power control | Manual, Continuance Time window |
| ⊿t | Measurable (0.3μsec.) |
| Storage | |
| Media | CF card (2GB) or Hard Disk (80GB) |
| Max. Recording | 26 hours (card), 510 days (HD), 3ch 100sps |
| Header | Time of event instrument location (Latitude. Longitude. Elevation. Serial number) |
| Capacity | 2GB (CF card), 40 to 80GB (HD) |
| Set Parameters | |
| Manual | 10 key and 10 function key |
| Functions | Time window / Trigger condition / Trigger channel / Sampling frequency / Amp gain / Buffer size / Offset cancel |
| Display & Function | |
| Type | 160 × 160 dot liquid crystal, with back light |
| Display | 3ch wave display (input wave, recorded wave) parameter, GPS time & position, A/D check, LCD check |
| Auxiliary | |
| RS-232C interface | Via modem of direct communications, data retrieve, parameter setting, self-check, or memory remaining. |
| Power supply For External sensors | ±15V (80mA) |
| Power supply | |
| Line input | AC85 to 220V（Max. 3A） DC10 to 40V（Max. 4W） GPS on : +2W H.D on : +12W |
| Internal Battery | 7.2V, 5.4Ah (Lithium ion) × 2 Operate time Max. 30hours without external power source, (Continuance recording mode. GPS off, No external sensor power supply) |
| Environmental | |
| Operating Temperature | 0℃ to 55℃ |
| Dimension | 330 (W) × 316 (H) × 180 (D) mm |
| Weight | Approx. 6kg |
| Accessory | |
| GPS Antenna | Cable length 5m |
| Input Cable | 1.5m × ch |
| Power Cable | AC cable 1.5m, DC cable 1.5m |
| Soft ware | |
| Type | Microsoft Windows compatible |
| P-wave | Wave monitor, FFT analysis. Filter(L.P.F, H.P.F) Integral, Differential |
VSE-15D
| Model | VSE-15D | Dynamic Range | Approx. 140dB |
| Span | ±0.1m/s | Max. Output | ±10V |
| Frequency Range | 0.2 to 70Hz | Calibration Coil | 6μA / Gal |
| Sensitivity | (Low) 100V/m/s (High) 1000V/m/s | Power Requirement | ±15V |
| Resolution | 10-7 m/s2 (10-5Gal) | Environment | -30℃ to 70℃, 90％Rh |
Recorder
SAMTAC-802C or 802H
The specification may change without notification because of the proved product.
