Tender For Centaur Digitizer 3 Channels With Gnss Antenna & Cable Request, DEHRAdun-Uttarakhand

Tender For Centaur Digitizer 3 Channels With Gnss Antenna & Cable Request Acquisition Unit (DAS) Number of Channels: Three channels (for BBS sensor) 01 Unit Dynamic range: 135 dB or more measured at 100 sps ADC resolution: 24 bit independent digitizer for each channel or more Input Range: Should match the sensor outputs Common Mode Rejection: Greater than 70 dB System noise: Not more than 2-3 counts of 24 bit system Sampling rate: a) Provision to select different sampling rates. Filter: Linear phase digital FIR filter RAM: At least 128 MB RAM or more Storage Type: Storage memory industrial standard card of 32 GB or more in ring buffer configuration. Each digitizer two storage media should be supplied. The storage must be hot swappable type. Recording Format: Standard seismological format compatible to Windows/UNIX with proven compression technique. It should be easily convertible to mini SEED format. GPS Timing System: 1. UTC timed with digitally controlled precision VCXO clock phase locked to GPS 2. Timing accuracy less than 0.1m Sec when GPS is locked and GPS receiver electronic circuit should be inside the DAS 3. Antenna exposed to outer side 4. Antenna should be enclosed in water tight and can work effectively in extreme climatic condition. Sensor control: 1. Sensor calibration facility for BB seismometer 2. Sensor mass position monitoring for BB seismometer. 3. Sensor mass centering on command for BB motorized seismometer. 4. Automatic re-centering while the motorized seismometer deviates from the center position and exceeds the threshold value State of Health Channel: Provision for checking state of health information like sensor mass position, temperature voltage, condition of GPS time lock etc. Locally and remotely. Gain: Hardware gain selection through software menu. Data acquisition Mode: Both continuous and trigger mode simultaneously Communication: In built communication interface circuitry for provision of remote data acquisition and State-of- Health in near real time mode through V- Transmission setting: Should have facility to select transmission of continuous mode data to remote location. Connectivity: a) Ethernet port (10/100 Base-T) supporting TCP/IP and UDP/IP, Multicast b) Continuous and trigger both. Power Supply: a) Power consumption of DAS less than 6Wat 12V DC recording 6 channels at 100 SPS. b) Low battery voltage protection c) DAS shall resume data acquisition and transmission automatically when the power is restored within minimum time. Operating temperature and humidity range: a) Operating Temperature -5°C to 60°C b) Humidity up to 100% RH Environment: All the indoor units should work in typical tropical environment conditions and should work without air conditioning. Housing: GPS and DAS modules should be enclosed in weather- and shock-proof sealed enclosures with lightening protection. DAS Firmware capabilities: The firmware/software in DAS should support the following: a) Real time ground motion data acquisition (week motion and acceleration data) in DAS including GPS data and State of Health monitoring. Warranty: The Bidder should offer warranty for a period of 12 months from date of acceptance of the Goods. Compatibility: Should be compatible with BBS Sensor (Trillium 240 and 120) NOTE:- (UPGRADABLE TO SIX CHANNELS)

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