Geotech Instruments, LLC

The SMART Series

Digitizer Model SMART-24D®

Borehole Digitizer Model SMART-24B

Portable Recorder Model SMART-24R®

Strong Motion Recorder Model SMART-24A®


  • 3 or 6 channels
  • 1 to 2000 sps
  • ultra low power (~1 W)
  • serial, Ethernet, USB2.0
  • now can telemeter triggered events only (or continuous data plus triggered events)
  • includes an Earthworm exporter

Visit the companion SMART Central Station page!

Visit the companion SMARTQuake® page!

See more info about SMART series!

Download QUICK START GUIDE! New

Download the datasheet in PDF format

Complete response for all primary sampling rates and input full scales:
http://www.iris.edu/NRL/dataloggers/geotech/smart24/geotech_smart24_dataloggers.htm#smart24
(the latest version of the PDCC software can be download from http://www.iris.edu/pub/beta/pdcc/)

TECHNICAL SPECIFICATIONS

DATA ACQUISITION

Number of inputs
Input type

Input range
Gain
Common mode rejection
A/D Converter
Anti-alias filter

Dynamic range
Intermodulation distortion
Signal to distortion
Sample rates

Noise
 - 3 or 6 channels 
- Balanced differential with transient protection suitable for both passive and active sensors 
- 40, 20 and 5 volts p-p bipolar differential maximum 
- Software selectable gains of 1, 2, 4, 8, 16, 32 and 64 
- Greater than 90 dB 
- Over sampled 24-bit Delta Sigma ADC with DSP, 1 per channel 
- Brickwall digital FIR filter, cutoff at 80% of and 130 dB down at output Nyquist 
- up to 138 dB
- Less than -100 dB 
- Less than -100 dB 
- 1, 5, 10, 20, 40, 50, 100, 125, 200, 250, 500, 1000 and 2000 sps primary sample rates (plus secondary)
- < 1 count rms at 100 sps 

ACQUISITION MODES (SMART-24R® & SMART-24A® ONLY)

Continuous
Timed
Triggered

 - User selected start time, ring buffer or until disk full
- 16 user programmable windows
- Theshold, STA/LTA (updating and non-updating LTA, and external (pre-event up to 32768 samples, post-event
up to remaining data storage

DATA STORAGE (SMART-24R® & SMART-24A® ONLY)

Type

Recording format

 - Up to 240 GB hard disk, PCMCIA ATA hard disk,
up to 64 GB Compact Flash, IBM microdrives
- Standard file system, drives readable directly on a PC,
SMART24Reader standard for quick waveform view and
simple file conversions. SMARTOffline software for
automated conversion into 32-bit SUDS, SAC, SEG-Y,
SEISAN, MatLab, miniSEED, CSS, and SEED

TIMING

Type
Accuracy
Stability (unlocked)
GPS duty cycle		 - Voltage controlled TCXO with external GPS synchronization 
- <±10 microseconds of UTC with GPS lock 
- 0.5 PPM (when unlocked)
- User programmable GPS power on/off cycle times to conserve power from continuous to 2^32 seconds in 1 second increments

 INTERFACES

Indicators

Communications

GPS
Power
Analog input
Other I/O


Telemetry		 - Large LCD display, with real-time waveform and GPS signal strength display
- RS-232, Ethernet, USB2.0
- Internal dual PCMCIA controler and interfaces
- Dedicated RS-422 serial port GPS interface
- Main power input and external battery inputs 
- Up to 6 sensor input channels (24-bit)
- 5 or 8 12-bit auxiliary analog inputs, external trigger
in/out, 1 PPS in/out, calibration outputs for pulse, sine
wave, pseudo-random wide band noise, and step signals
- CD1.1 protocol (TCP/IP based) over Ethernet or
serial ports (PPP) and/or Earthworm protocol

GENERAL

Firmware

Field upgrades


Setup
Utility software



Diagnostics
Power consumption		 - Real-time multi-tasking operating system that allows simultaneous recording and data retrieval 
- FLASH memory and boot loader allow for local or remote upgrades of the system firmware (both CPU and DSP code) and FPGA hardware configuration
- User can setup and operate the unit locally or remotely
- SMART24Config Java written setup, control, and real-time data display utility software provided.  SMART24Reader for quick view and simple conversions provided. SEEDLINK and EarthWorm connectivity!
- ftp server and webserver running on all SMART-24 units
- Hardware diagnostics and state-of-health information provided 
- ~1 W for 3 channels @ 100 sps (SMART-24D®)

 PHYSICAL

Construction
Size
Weight (SMART-24D)
Operating temperature
Humidity		 - Portable rugged shielded molded case 
- 4.1 in (105 mm) w x 10.35 in (263 mm) l x 13.65 in (347 mm)h 
- 8.5 lbs (3.9 kg) 
- -20 ºC to +70 ºC for basic electronics package; PCMCIA PC Card or hard disk options may limit this range 
- 0 to 100% (IP67)