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NetDAS (24-bit Internet DAS).
Data recorder/transmitter/server, 4-64 channels for use in seismic safety, industrial, scientific and remote monitoring applications. Includes GPS, multiple triggers, wired or wireless connectivity. Runs under MS Windows, or Linux. Operates standalone or with Poseidon facility alarm or Cronos structural monitoring systems. |
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DAQ24USB
(24-bit USB DAS)
USB data acquisition with up to 130 dB of dynamic range: Java data logger, libraries, notebook or desktop host PC, USB powered, OEM or kit. |
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Network Data Recorder/Transmitter
| NetDAS is a rugged 24-bit data logger, event recorder and transmitter based on industry-standards and commercially available plug-in cards. All software runs over a LAN or the Internet and can be configured to operate simultaneously in several different modes: network broadcast, continuous local storage and trigger. NetDAS can be ordered with an internal or external tri-axial accelerometer and runs under most popular computer operating systems. |
| Applications and Features |
- Seismic monitoring
- Internet messages and warnings
- Industrial facilities, dams, bridges, pipelines
- Companion to Poseidon and Cronos systems
- Uses facilities communication infrastructure
- Wireless or wired connectivity
- Strong-motion recording for buildings
- Low latency for early warning/shutdown
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| Specifications |
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ADC |
120dB (24-bit resolution), USB, 4 channels/board |
Filtering |
Linear phase low-pass digital |
Channel count |
4 – 16 |
Sampling rate |
10—1500 samples/sec |
Sampling skew |
None (one ADC/channel) |
Full scale |
+/- 20 volts |
Software gains |
X2 – X16 |
Triggers |
Level; average (STA/LTA); CAV; spectral analysis, common wire |
Timing accuracy |
250us |
Pre/post event time |
1 - 60 minutes |
Latency |
20 samples (~250 ms at 100 Hz sampling) |
Ports |
Ethernet (RJ45), serial (DB9M), optional Wireless |
Removable storage |
2GB SD Flash card |
Accelerometer (option) |
110 or 120dB, automatic programmable self-test, 3g or 4g full scale |
Data formats |
SEG-Y, MATLAB, SEED, SAC, SUDS, GSE, ASCII |
Bundled software |
Graphical display; triggers; logger; formatter; data concentrator |
Auxiliary I/O |
Digital I/O; 10-bit analog; 4—20-mA current loop |
LED Indicators |
Run and Event |
NetDAS interface |
SSH (Linux) and Remote Desktop (Windows) |
Operating systems |
Microsoft MS Windows/Linux |
Environmental |
IP64 (IP65, IP66 option), -20 to +50 degrees C |
Size |
8(L) X 9(W) X 7(H), inches or 20(L)X23(W)X18(H), cm |
Weight |
15 lbs or 7 kg |
Power |
5 - 7 watts, 9 – 18 VDC input (optional 30 hr battery backup) |
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