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22-bit
Digital PC Desktop Seismic Recorder
Model
DAS-6102-PC
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The DAS-6102-PC is a high-performance, versatile 22-bit resolution
digital seismic PC desktop recording system
The standard system is configured for 4-channels. Optional configurations
include configurations up to 32 channels. All channels operate synchronously
up to 2,000 samples per second.
A standard 10Gb removable hard disk is included, with optional disk
capacities to to 32Gb. Data is retrieved by removal of the PC compatible
compact hard drive, or via LAN (Ethernet card optional).
The DAS-6102 includes a GPS receiver and antenna and "Smart Timing"
software, allowing the user to select the timing accuracy, which will
automatically control and minimize the GPS cycling times. The monitor
provides real time viewing of up to 3 waveforms.
The system is suitable for central site recording of analog telemetry
networks, teaching aplications, and public viewing.
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FEATURES
- 22-bit high resolution
- 112B dynamic range
- operates in both trigger and continuous mode
- Multiple trigger passband pre-filters
- High accuracy GPS timing
- Large PC compatible removable hard disk
- PC monitor
- PC keyboard
- Real time waveform display
- 4 to 32 channels
- Analog and digital alias filtering
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SPECIFICATIONS |
| INPUT CHANNELS |
| Type: |
Differential or Single-Ended |
| Data Channels: |
4 optional up to 32
channels. |
| State-of-Health 4th Channel: |
Standard: 22-bit resolution |
| Gain: |
Software programmable: 1,2,4,8 |
| Single Ended Input
Range, |
Software programmable:
±2.5 Optional Differential Input |
| Dynamic Range: |
>112 dB @ 200 sps
(rms to full scale) |
| Analog Anti-Aliasing Filter: |
>90 dB @ primary sampling rate
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| Input Impedance |
Data inputs: ±2.5V - 1Mohm |
| Overvoltage Protection |
±40 V |
| DIGITIZER |
| Type: |
22-bit delta-sigma converter in
each channel (570 kHz) |
| Sampling Rates: |
1, 10, 20, 40, 80, 100, 200, 500,
1000, 2000 sps |
| Digital Filter |
Built-in DSP-based
digital filter |
| Phase |
Linear within the passband |
| TIMING SYSTEM |
| Type: |
True Real Time PLL controlled,
GPS-referenced |
| Maximum Accuracy : |
<1msec, (Software Selectable) |
| HOW
TO ORDER |
Crystal Oscillator |
Standard: 25ppm; Optional TCXO
1 ppm/year |
| Basic DAS-6102-PC Configuration |
The standard configuration
includes 4 channels, 10Gb hard drive, and GPS antenna/receiver. |
| Channel Configuration |
option -8CH, -12CH, -16CH, -20CH, -24CH, -32CH
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| Removable 12Gb, 20Gb, or 30Gb Drives |
option -xxGb (specify capacity, must
turn power off to remove) |
| LAN option |
option -LAN |
| Sensor Options |
EP-300
Broadband,
EP-105 Broadband,
SP-400 Medium Period Seismometer,
R-1 Rotational Seismometer |
| Supplies and Accessories |
PC removable disk frame
Hard Disk (specify capacity) |
| General Spares |
GPS antenna/receiver
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S Printer
Friendly Format For Specifications
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GPS Duty Cycle : |
Once every 18 hrs
to achieve <1msec accuracy, (Software Selectable) |
| EVENT DETECTORS |
| Type: |
STA/LTA, Level, up to 5 independent
detectors in frequency domain |
| Trigger Pre-filter |
Up to 5 trigger passbands |
| Pre-event data buffer |
Up to 90 seconds (@100
sps) |
| Post-event buffer |
User configured - no limitations |
| Trigger channels |
May be controlled by one, several
or all 5 detectors associated with any physical or virtual acquisition channel |
| Calibration |
5V square wave (others optional) |
| Calibration Duration |
User selectable |
| POWER |
| Voltage: |
110 VAC |
| USER INTERFACE |
| Display Type: |
SVGA monitor, optional
flat secreen |
| Full PC keyboard |
Standard |
| User Control: |
Menu-driven; state-of-health messaging |
| Data display: |
Up to 3 channels simultaneously
in real time |
| MASS STORAGE |
| Hard Disk |
10Gb standard, optional
to 32Gb |
| Disk/File Compatibility: |
Any PC |
| Data Formats: |
Mini-SEED w/Steim-2 compression
up to x6 CSS 3.0: long integer; separate data description in ASCII |
| COMMUNICATION |
| Dial-up Telephone Line
Access |
RS232 com2 port; internal
modem; Automatic PC dial up communication software included |
| Ethernet |
Optional LAN card |
| ENVIRONMENTAL PARAMETERS |
| Housing |
PC Desktop |
| Size |
Configuration dependant |
| Weight |
Configuration dependant |
| CONNECTORS: REAR PANEL |
| Data |
DB-16 |
| LAN or serial port |
Standard PC |
| GPS |
DB-9 |
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Specifications Subject
to Change Without Notice |
| ©eentec 2000, 2003 |
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