Generation in Data Acquisition

Finally, a portable instrument that is truly

compact and self-contained. Regardless of

the application, you will appreciate how

little equipment you will actually need to

carry to the field. No laptop, PDA or

breakout box, just a seismometer, cable,

Taurus and battery.

A complete

seis-mograph you

can hold in your

hand

The Taurus Digital Seismograph is a revolution in

per-formance, capability and packaging in field portable

seis-mographs. This small and lightweight hand-held

instrument can directly interface with almost any sensor,

record continuous data for over 800 days, and operate

using a mere 750 mW. Taurus combines all the attributes

of a stand-alone recorder with the benefits of Internet

and wireless communication capabilities, and includes a

high resolution 24-bit ADC, a precision GPS clock, and

internal removable storage options with

1 to 40 Gbyte capacities. An integrated colour graphics

display and a five-button keypad provide instant access to

real-time or recorded data.

NEXT

Generation

in Data

Acquisition

Benefits

➤

_{Excellent quality data with 24-bit resolution and precise}

GPS timing

➤

_{Hand-held,all-in-one seismograph}

➤

Long term deployments with over 800 day recording capacity

➤

_{Quick and convenient data retrieval using internal}

hot-swap media

➤

_{Real-time data streaming for network applications}

➤

Real-time,historic and calibration data review at-a-glance

➤

_{Data output directly in industry-standard formats}

Applications

➤

_{Broadband seismic studies}

➤

Emergency networks

➤

_{Aftershock studies}

➤

Strong motion studies

➤

_{Seismic networking over the Internet}

➤

Controlled source recording

➤

_{Vibration monitoring}

➤

Infrasound data acquisition

➤

_{Quick and convenient data retrieval using internal hot swap storage media}

Compact Flash and 1.8” ATA hard disk drive slots are standard on every unit. A watertight access door affords quick and easy access for

fast media exchange in the field without interruption to data acquisition. Memory options can be selected as appropriate for

environ-mental conditions and Compact Flash media can be purchased directly from local suppliers.

➤

_{Minimal power,maximum data availability}

Taurus has an impressively low power consumption of just 750 mW in a typical portable system configuration acquiring 3-channels at

100 sps. This significantly reduces the size of the solar panels and batteries required at any site. Users will appreciate the importance of

low power consumption and increased reliability – it is not uncommon for the Taurus to operate continuously from a 10 Ah battery and

18 W solar panel.

➤

_{Integrated display provides clear concise feedback}

Every Taurus includes a large colour graphics LCD display and a five-button keypad which provides direct access to various acquisition,

monitoring, configuration and instrument status web pages. There is no guesswork or interpretation of LED sequences – just concise

in-strument status messages and graphics.

➤

_{Familiar web browser interface for local or remote operation}

No special software is required to configure the Taurus or to display real-time waveform or state-of-health information. A familiar web

browser provides onboard and remote access to the many interactive web pages which make up the Taurus interface. Real-time and

his-toric data, GPS status, instrument configuration and field procedures are all richly presented on the large colour graphics display. Many of

the html pages can be translated into other languages or edited to include customer workflow requirements for configuration,

monitor-ing and data retrieval.

➤

_{Connects directly to all modern seismometers with single cable}

Taurus can interface directly with any modern broadband or short period sensor without the need for external breakout boxes or power

supplies. Hardware and software gain are user-configurable via the browser interface, as are the sensor control lines for mass centering,

cal enable, and lock/unlock. Taurus will monitor the sensor mass position and center the masses as required, facilitating single visit

de-ployments of broadband sensors. This is most important immediately after installation while the sensor is acclimatizing.

TAURUS:

Class-leading dyna

A high dynamic range is

essential in modern

broad-band data acquisition.

Taurus is well-equipped with

a Nanometrics proprietary

sigma-delta digitiser

provid-ing 24-bits of resolution and

a dynamic range of 138 dB.

Sampling is simultaneous on

all channels and timing

accu-racy is sub millisecond with

the GPS locked.

UA

LS

IZ

Taurus

Data

Manage-ment

To excel in modern

broad-band data acquisition, a

high-er dynamic range is essential.

Taurus is well-equipped with

Nanometrics' proprietary

➤

_{Data output in industry-standard formats}

In addition to waveform data,Taurus records the entire configuration history, all log file

entries and status information data in a single project file or Store. Data is organized to

facilitate the rapid review and retrieval of waveform, configuration and log file

informa-tion. The Store contents can be reviewed using a web browser and data can be

di-rectly accessed in a number of international formats including miniSEED, sorted

miniSEED, ASCII, SEISAN and SEG-Y.

➤

_{Real-time data streaming for network applications}

Taurus includes a wide range of physical interfaces and software protocols to

support continuous real-time data streaming. Where network connections

exist, real-time data streaming is available via UDP/IP multicast and http over

10/100 Base-T Ethernet or the serial data port (SLIP). Optionally,Taurus

data can be accessed through dial-up or wireless internet connections.

➤

_{New capabilities readily incorporated into Linux & Java}

based architecture

Today’s portable seismograph must operate unattended for long

peri-ods in remote areas, and seamlessly integrate with communications

technologies such as VSAT, wireless and the Internet. To meet these

challenges the Taurus architecture combines the versatility of the Linux

operating system with modern Java applications while interconnecting

with standard IP protocols over either Ethernet or serial interfaces. A

winning combination designed to keep Taurus on the cutting edge for

years to come.

The Trident 305 is a low-power, standalone,

3-channel, 24-bit analog-digital converter (digitiser)

whose performance specifications are identical to the

internal Taurus digitiser.

➤

_{Add-on expansion digitisers}

The Taurus supports 3-channel add-on Trident 305 digitisers expanding the total

number of channels supported by a single Taurus from 3 to 6 or 9 channels. The

Trident 305 settings (ex. gain, input impedance…) can be configured

independ-ently of the Taurus internal digitiser while making use of the Taurus for

communi-cations, GPS timing, data storage and power. Trident 305 connects to the Taurus

via a simple twisted pair NMXbus cable which can be up to hundreds of meters

in length. A Taurus/Trident 305 combination makes an excellent 6 or 9 channel

system.

APOLLO

Project

➤

_{Data management,simplified}

Apollo

PROJECT

is a server application which manages the time consuming and

repetitive task of downloading large data sets from multiple Taurus recorders.

The user defines the type of project: archive, one-time data request, trigger or

controlled source. Apollo

PROJECT

locates the data, downloads the requested

time series, combines the data into network files and outputs the data in the

for-mat of choice. There is no more convenient way to simultaneously manage large

data sets from multiple Taurus instruments.

TAURUS

Technical Specifications

250 Herzberg Road, Kanata, Ontario, Canada K2K 2A1

613-592-6776 Fax: 613-592-5929

www.nanometrics.ca

Email: sales_mkt

nanometrics.ca

S E N S O R I N P U T S

Channels 3 standard, field upgradeable to 6 or 9 with external Tri-dent digitisers

Sampling Simultaneous

Input voltage range Selectable 2V, 4V, 8V, 16V, 40V peak-to-peak differential Nominal sensitivity 1 count/µV (gain=1)

Hardware gain selectable 0.4, 1, 2, 4, 8

Input impedance selectable 43 k or high-Z (> 9 MΩ)

D I G I T I S E R P E R F O R M A N C E

Type Proprietary high order sigma-delta Digital filter 140 dB attenuation at output Nyquist Filter type Linear phase (consult factory for other options) Dynamic range >141 dB @ 100 sps (max sine wave above shorted input) Shorted input noise 0.7 µV RMS typical at 100 sps, unity gain

Sample rates 10, 20, 40, 50, 80, 100, 120, 200, 250, 500 sps Software gain User configurable 0.001 to 100

High pass filter User configurable 0.001 to 1 Hz

S E N S O R S U P P O RT

Sensor types Broadband active and short period passive Control lines 6; typically used for Cal enable, mass center, mass

lock/unlock, and XYZ/UVW select Logic level assert/ 0V, 5/12V, High-Z

de-assert configurable

Sensor power Supply power pass-through to sensor (9-36 VDC, 1A). Over-current protected. Sensor power can be switched on/off from user interface.

Auto mass centering Configurable delayed and immediate auto-centering mass position thresholds with configurable repeat interval and maximum retry limit.

Serial interface Supports digital management of Nanometrics Trillium 120/240 seismometers

C A L I B R AT I ON O U T P U T

Calibration signal Fully-configurable ramped sine wave, pseudo-random bi-nary and pulse

Calibration initiation User interface (local or remote) Calibration modes Voltage or current

T I M I N G

Timing system Internal DCXO clock disciplined to GPS Timing accuracy <100 µsec

GPS receiver Internal 12 channel receiver

GPS antenna External active antenna supplied with 5 m cable Duty cycle selectable Auto-adaptive, always-on, 10 min, 30 min

S TAT E - O F - H E A LT H R E CO R D I N G

Taurus records extensive continuous state-of-health: Instrument and Power supply voltage

Environment: Digitiser and controller current consumption NMX and serial port peripheral current consumption Temperature

GPS timing and channel parameters 4 general-purpose SOH voltage inputs (12-bit) Configuration audit trail

Software message and event log Sensor Port: Seismometer mass positions

Current consumption

I N T E R NA L DATA S TO R AG E

Standard Removable Type I/II Compact Flash slot Removable 1.8” ATA disk drive slot Easily accessible via weatherproof media door

T H E F O L LOW I N G M E D I A O P T I ON S A R E AVA I LA B L E :

Compact Flash 2 to 16 Gbyte; 1.8” ATA disk drive 40 Gbyte

Duration >800 days continuous recording, 3-channels @ 100 sps on 40 Gbyte ATA drive (>320 days on 16 Gbyte Compact Flash)

Recording modes Continuous; write once or ringbuffer (overwrites oldest data). Continuous with STA/LTA trigger flags

File system Journaling Linux system ext3, readable in Windows Storage format Nanometrics Store

Direct data output MiniSEED, sorted MiniSEED,ASCII, Seisan, SEGY and Nanometrics NP formats

DATA R E T R I E VA L

Media exchange Compact Flash and ATA drives are field swappable Download interfaces 10/100Base-T Ethernet

Data Download Direct connection or media exchange. Multiple Taurus with optional Apollo Project Data Management Software

R E A L - T I M E DATA CO M M U N I C AT I ON S

Interfaces 10/100Base-T Ethernet, RS-232 serial Protocols UDP/IP unicast/multicast

HTTP (POST and GET) RS-232 serial with IP drivers

I N T E G R AT E D U S E R I N T E R FAC E

LCD display 240*320 colour graphics display with backlight Interface Integrated browser with five button navigation LED indicators System status tri-colour LED, Ethernet communications

LED, Media status LED

CON F I G U R AT I ON

Taurus is configurable locally via the colour LCD display and integrated browser or remotely using any web browser. Multiple unit configuration is achieved using optional group configuration software. Consult factory for further information.

S O F T WA R E

Operating system Linux

Applications software Nanometrics Apollo acquisition server with web inter-face

CON N E C TO R S

Sensor connector 26-pin mil circular. Primary input and sensor SOH chan-nels, sensor control lines, calibration signal outputs, pro-tected/switchable sensor power, digital serial sensor management interface

Serial/USB 19-pin mil circular

Serial port 1; Rx,Tx, RTS, CTS, DTR, DSR, CD, RI Serial port 2; Rx,Tx, RTS, CTS (data collection from se-rial devices)

Serial peripheral power (pass-through supply voltage) USB master; Data, Pwr (5V, 100mA)

GPS TNC, active antenna connection (3.3V) Ethernet 4-pin mil circular, 10/100Base-T

User SOH 7-pin mil circular, 4 analog SOH inputs and common ref-erence, 3.3V @ 10mA peripheral power

NMXBus 4-pin mil circular, NMXbus data and power Power 3-pin mil circular, 9-36 VDC input

USB USB master/slave accessible behind media door

P OW E R

Power system Protected electronic resettable fuse design with config-urable low voltage disconnect and restart, reverse bat-tery and short circuit protection

Ultra-low power mode 750 mW @ 12 V, 3-channel continuous recording @ 100 sps, <100 µsec timing precision, Compact Flash recording

Low power 1.2 W @ 12 V; 3-channel continuous recording @ 100 sps, continuous serial data acquisition (external geo-detic GPS or equivalent), <100 µsec timing precision, in-ternal disk or Compact Flash recording.

Communications mode 2.3 W typical; 3-channel continuous recording @ 100 sps, <100 µsec timing precision, real-time Ethernet or serial communications

Configuration 3.3 W typical. All systems operational including colour graphics display

E N V I R ON M E N TA L

Operating temp. -20º C to +60º C using Compact Flash storage +5º C to +55º C using 1.8” ATA disk storage Storage temp. -40º C to +70º C

Altitude No altitude limit with Compact Flash, -60 m to 3000 m with IDE disk drive

Humidity 100%

Weather resistance Full IP67 when closed and with optional connector caps Length 264 mm

Width 147 mm Depth 60 mm Weight 1.8 Kg