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ULTRALOW
POWER
24-BIT SEISMIC SEISMIC RECORDER WITH EXTERNAL
EA-120 HIGH RESOLUTION ACCELEROMETER AND INTERNAL SCU
Model DR4050-A-SCU/IF |
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The eentec DR4050-A-SCU/IF is a rugged, ultra low power, high-performance,
versatile 24-bit ADC resolution seismic recorder. It is designed
for the most demanding requirements in high performance seismic
or strong motion research. It both records seismic events for further
analysis and interfaces with a streaming RS-232 interface link to
an SCU controller. It includes the high resolution FBA EA-120 accelerometer.
The EA-120 is standard external with an optional internal configuration.
This state-of-the art seismic standard recorder features every
channel having a high resolution ADC that ensures no channel to
channel skew, and a very low-power, high-performance ARM processor
that controls the data acquisition, real-time digitization and filtration.
The standard unit is suitable for earthquake monitoring and interfacing
with an SCU to allow that controller to communicate with other industrial
machines.
The powerful, full-featured single-board system is easy to use,
install, and maintain. It is lightweight and robust for field deployment.
It includes software for seismic waveform analysis and manipulation.
Its full-featured communication capabilities such as Ethernet LAN,
VSAT, ADSL, and some radios allows easy configuration for telemetry
networks. GSM, GPRS, CDMA, and PSTN communications are also supported.
The included GPS can act as a network timeserver for synchronizing
other NTPv4 enabled timing critical systems.
Other options include an external battery pack with charger.
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FEATURES
- 24-bit high resolution
- 121dB dynamic range
- operates in trigger or continuous mode
- Excellent communication features
- Multiple trigger passband pre-filters
- High accuracy GPS timing
- Large capacity PC compatible removable flash disk
- Integrated SCU
- Triaxial FBA EA-120 high resolution accelerometer
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SPECIFICATIONS |
| INPUT CHANNELS |
| Type: |
Differential (external or internal
option) |
| Data Channels: |
3 external FBA accelerometers
model EA-120 |
| Resolution: |
24-bit resolution ADC, low resoultion
configuration (121dB) |
| Gain: |
Software programmable: 1, 2,
3, 4, 8, 16, 24, 32 |
| Differential Input |
±20 V |
| Dynamic Range: (rms
to peak): |
121 dB @ 50 sps
low resolution ADC |
| Overvoltage Protection: |
500W per 10/10000us, steady state
power dissipation 5W,surge current up to 40A. |
| Input Impedance |
Data inputs 1MOhm
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| DIGITIZER |
| Type: |
24-bit delta-sigma converter
on each channel |
| Sampling Rates: |
16, 20, 40, 50, 80, 100, 200
sps |
| Digital Filter |
130 dB @ 200 sps
FIR |
| Phase |
Linear within the passband |
| Processor |
ARM processor with 8/16 Mb Ram
available |
| Channel to Channel Skew |
None |
| TIMING SYSTEM |
| Type: |
GPS |
| Maximum Accuracy
: |
10 micro seconds
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| HOW
TO ORDER |
Crystal Oscillator |
TCXO 1 ppm/year |
| Basic DR-4050-A-SCU/IF
Configuration |
The standard configuration
includes 3 external cahnnels with an EA-120 FBA accelerometer, 1Gb
Flash card, GPS antenna/receiver, Lan cable for laptop, and analysis
software. |
| Additional External sensor input |
option -EXT |
| Removable flash card |
option -xxGb (specify capacity ) |
| Sensor Options |
EP-300
Broadband,
EP-105 Broadband,
SP-400 Medium Period Seismometer,
R-1 Rotational Seismometer |
| Supplies and Accessories |
External Battery pack
w/ charger (specify voltage)
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| General Spares |
GPS antenna/receiver
Charger
Battery (specify capacity)
Flash Card |
S Printer
Friendly Format For Specifications
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Crystal Frequency
Correction Resolution |
0.016 ppm |
| GPS Receiver (integral with antenna): |
Miniature; external;
connects via a std 5m cable |
| Internal Battery
Backup Clock |
-100 to 10 ppm |
| TRIGGERING |
| Type: |
STA/LTA, Level , phase picking |
| Recording |
Triggered or continuous |
| Pre-event/ Post-even
shared buffer |
1,000 seconds split
anyway between pre-even and post-event |
| Calibration |
Internal 5V voltage step, external
sensor option sine wave |
| Calibration Duration |
User selectable |
| POWER |
| Voltage: |
9 – 15 Vdc |
| Overvoltage Protection |
15V transzorb for spikes and
reverse polarity, 1.8A automatic resettable polyfuse for longer term high
voltage |
| Power Consumption |
95mA at 12V |
| USER INTERFACE |
| Display Type: |
LED std |
| User Control: |
Menu-driven; state-of-health
messaging |
| Optional VGA data display: |
Up to 3 channels simultaneously
in real time, settings, and SOH |
| Setup |
RJ45 plug on the plug panel to
connect computer (via x-over cable to PC laptop ) or to an Ethernet network |
| Main GUI |
Any common web browser (MS Explorer,
Firefox, Safarai) |
| Console |
Any common VT100 emulator (Hyper
Terminal) |
| Data Transfer to SCU |
RS-232 continuous |
| Data Transfer (remote) |
Any common FTP client |
| Data Retrieval (local) |
Copying removable flash card
to PC using a USB reader, via FTP, or copying files from the internal
SCU. |
| MASS STORAGE |
| Compact flash memory
card |
Removable 1Gb Flash
standard, optional 3Gb |
| Disk/File Compatibility: |
Any PC |
| Data Formats: |
PC-SUDS (other conversions to
ASCII, miniSEED available). Internal SCU in miniSEED format |
| REMOTE COMMUNICATION |
| Interface |
Via web browser or
Telenet over Ethernet or PPP |
| Compatibility |
VSAT links, GSM and CDMA modems,
spread spectrum radios links, and others |
| Data Transfer |
Using HTTP, FTP or CD1.0 in internal
SCU |
| ENVIRONMENTAL PARAMETERS |
| Housing |
Reinforced Plastic |
| Waterproofing |
IP67 |
| Operating Temperature
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-20 to +60°C |
| Humidity |
100% RH |
| Size |
260 x 230 x 130mm |
| Weight |
2Kg |
| CONNECTORS: REAR PANEL, WATERPROOF |
| Power |
2-pin Circular (bayonet) |
| External Sensor |
16pin Circular (bayonet) |
| Ethernet |
RJ-45 10/100Mbit port for connection
to PC, LAN, VSAT, Ethernet, radio, etc. |
| Serial Port |
DB-25 RS-232 Port for GSM and
CDMA modems |
| GPS |
6-pin Circular (bayonet), 5m
cable, extensions optional |
| CONNECTORS INTERNAL |
| Terminal Interface |
DB-9 terminal interface mainly
for factory use and diagnostics |
| INTERNAL SCU |
| Voltage |
9 – 15 Vdc |
| Power Consumption |
100mA at 12V |
| Operating System |
Window CE or Window XP Embedded |
| Communication |
2 Ethernet with RJ-45 port, 2
standard serial ports |
| Compact Flash Memory Card |
Removable 20Gb internal. |
| Data Conversion |
Optional PGA and SI calculation |
| STANDARD EXTERNAL
EA-120 FBA ACCELEROMETER |
| Type: |
Orthogonally aligned triaxial
mounted |
| Dynamic Range: |
>135dB |
| RMS Noise |
0.8 micro g |
| Full Scale |
+/-2g |
| Bandwidth |
DC to 50Hz +1dB /-3dB |
| Output |
+/-10V differential |
| Linearity |
0.3% typ, 0.1% optional |
| Cross Axis Sensitivity |
0.02g/g, 0.01 g/g optional |
| Calibration |
Fully calibrated |
| Zero g biasing |
Electronic (adjustable) |
| Input protection |
Protection against lightning
and power surges. |
| Optional internal accelerometer |
Available, 2 micro g RMS noise,
dynamic range >108 dB or 120 dB dynamic range solid state (MEMS) |
| STANDARD ANALYSIS
SOFTWARE |
| eqWave |
Waveform analysis and manipulation.
Operates under Windows, Unix, Linux, and MacOS |
| Functions |
Reads and displays data files,
zooming and scaling, bandpass filtering (3 custom bands for quick filtering),
and arrival picking. |
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Specifications Subject
to Change Without Notice |
| ©eentec 2000, 2003, 2007,2009 |
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