22-bit Digital Multichannel Strong Motion Recorder
Model SMR-6102

The SMR-6102 is a rugged, low power, high-performance, versatile 22-bit resolution multichannel digital strong motion recording system for permanent monitoring installations

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 128Mb removable flash disk is included, with optional disk capacities to to 1Gb. Data is retrieved by removal of the compact flash disk, or through dial up telephone access (internal modem optional), or via LAN (Ethernet card optional).

The SMR-6102-x 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 integrated display and keyboard allows for easy setup in the field and real time viewing of up to 3 waveforms.

For applications such as bridge or dam monitoring requiring optional sensor drivers and protection with remote calibration and reset, see SMR-6102-I

  • 22-bit high resolution
  • 115B dynamic range
  • operates in both trigger and continuous mode
  • Multiple trigger passband pre-filters
  • High accuracy GPS timing
  • Large PC compatible removable flash disk
  • Integrated display
  • Integrated keypad
  • Real time waveform display
  • 4 to 32 channels
  • Analog and digital alias filtering
Type: Differential or Single-Ended
Data Channels: 4; optional up to 32 channels. Fourth channel is used as state-of-health channel or for external sensor.
State-of-Health 4th Channel: Standard: 22-bit resolution,
Gain: Software programmable: 1,2,4,8
Single Ended Input Range, Software programmable: 5. Optional differential Input
Dynamic Range: >115 dB @ 100 sps, 120dB @40 sps
(rms to full scale)
Analog Anti-Aliasing Filter: >90 dB @ primary sampling rate
Input Impedance Data inputs: 2.5V - 1Mohm
Overvoltage Protection 40 V
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
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 Configuration The standard configuration includes 4 channels, 128Mb flash drive, and GPS antenna/receiver.
Channel Configuration

option -8CH, -12CH, -16CH, -20CH, -24CH, -32CH

4th Channel External Connector (Aux) option -AX
Differential Sensor Input Configuration option -DI
Full VGA Display option -FD
Full PC Keyboard (external miniature) option -KB
Microsoft Windows O/S option -MSW (requires option -FD and -KB)
Removable Flash Drives option -xx (specify capacity, must turn power off to remove)
Internal Modem option -56IM
LAN option option -LAN
Sensor Options EA-120 FBA Accelerometer ,
R-1 Rotational Seismometer,
EP-105 Broadband,
Supplies and Accessories External Battery pack w/ charger (specify voltage)
USB Flash card reader
Flash Disk (specify capacity)
General Spares GPS antenna/receiver
Set of spare boards
Battery (specify capacity)

S Printer Friendly Format For Specifications

GPS Duty Cycle : Once every 18 hrs to achieve <1msec accuracy, (Software Selectable)
Type: STA/LTA, Level, up to 5virtual 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
Voltage: 7 - 16 Vdc
Overvoltage protection: 60 V
Power consumption 12 ch ~6W, 100sps, (Display off, PC and GPS cycled)
Display Type: Backlit 320x200 graphic LCD display, opt. TFT color 640x480 (1/4) VGA
Keypad: 12 (numerical + function) keys
Full PC keyboard Optional (external)
User Control: Menu-driven; state-of-health messaging
Data display: Up to 3 channels simultaneously of real time waveform
Remote PC: RS232 com2 port
Flash Disk 128Mb standard, optional to 1Gb
Disk/File Compatibility: Any PC
Temperature Range: -10 to +50C
Data Formats: Mini-SEED w/Steim-2 compression up to x6 CSS 3.0: long integer; separate data description in ASCII
Dial-up Telephone Line Access RS232 com2 port; optional internal modem; Automatic PC dial up communication software included
Ethernet Optional LAN card
Housing Painted Steel, optional stainless steel
Waterproofing Submersible to 1m depth
Operating Temperature -10 to +50C
Humidity 100% RH
Size L12"xW10"xD6"
(250 x 300 x 150mm)
Weight 9.5lb typ
Power 2-pin Circular (MS)
Data Circular connector
LAN or serial port 10-pin Circular (MS), or DB9(LAN optional)
GPS 6-pin Circular (MS)
To PC Keyboard PS/2 Mini-DIN
To external PC RS232 (DB9)

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