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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 Windows XP/Vista, Linux or Mac OS X. 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 and 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 |
+/- 3 or +/- 20 volts |
Software gains |
X2 – X32 |
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 |
Up to 8 GB Compact Flash |
Accelerometer (option) |
60, 90 or 120 dB, automatic programmable self-test, 3 or 5 g 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 |
GPS status, RUN, Event |
NetDAS interface |
Browser |
Operating systems |
Microsoft Windows XP/Vista/Linux/Mac OS X |
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 1 – 48 hr battery backup) |
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