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We Buy / Sell Your -  Spectra EPOCH 25 L1 / L2 GPS System

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We Buy / Sell Your - Spectra EPOCH 25 L1 / L2 GPS System

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EPOCH 25 L1 / L2 GPS System

A high precision GPS receiver, the EPOCH 25 L1/L2 receiver offers superior satellite tracking and optimal precision and low power usage.

EPOCH 25 Key Features:

  • L1/L2 antenna
  • L1/L2 receiver
  • RTK- real-time positioning
  • Post processed Static data collection
  • Choice of field data collector hardware
  • Spectra Precision Survey Office software
  • Field-proven technology


The Spectra Precision EPOCH 25 L1/L2 RTK GPS System provides robust field performance for rugged surveying conditions. Spectra Precision GPS technology for accurate and reliable real-time positioning is ideal for topographic surveying and stakeout. For your precise long baseline measurement needs use the EPOCH 25 Static collection and post process using Spectra Precision Office software.

A system includes the base and rover EPOCH 25 L1/L2 GPS antenna and receiver, plus a short- or long-range Pacific Crest radio modem. To complete the system, you need a data collector. Choose from either the Spectra Precision Nomad or Recon supplied with Spectra Precision Field Surveyor software for all your survey measurement needs.

The EPOCH 25 is a highly productive measurement solution, allowing the user to collect topographic data and stake layout detail. The system operates without line-of-sight between points, and it can operate anytime, in any weather, thereby offering much greater productivity over traditional optical surveying techniques.

Positioning Data Link (PDL) radio kits and communication products from Pacific Crest provide the critical connection between the GPS/GNSS reference station and other GPS/GNSS user equipment. Pacific Crest PDL units are compact, lightweight and power-efficient. The unique design of these units allows them to be mounted easily on all standard tripods and range poles.

 Pacific Crest PDL radios are turnkey solutions for RTK data links that easily integrate with most major GPS/GNSS OEM equipment. The data link features a 19,200 bps data rate and flexible transparent or packet-based protocol. Waterproof and all-weather operational, PDL modems, kits and accessories help you increase productivity in the field no matter where you are since they are compatible with GPS RTK equipment.

GENERAL
When connected to the data collector:
    •     Color touch-screen indicators for satellite tracking, data logging
    •     Application programs, job, and data management
    •     CompactFlash card removable memory

TECHNICAL SPECIFICATIONS

Static and FastStatic GPS surveying2
horizontal .............................. ±5 mm +0.5 ppm RMS
Vertical ..................................±5 mm +1 ppm RMS
Real-Time* / Postprocessed Kinematic surveying2
horizontal .............................. ±10 mm + 1 ppm RMS
Vertical ................................ ±20 mm + 1 ppm RMS
Initialization ................. Automatic OTF (on-the-fly) while moving
Initialization time ..........................Typically <30 seconds
Start-up .................. <90 seconds from power on to positioning
 <30 seconds with recent ephemeris
Code differential GPS positioning2
WAAS/EGNOS differential positioning accuracy1 ..Typically <5 m 3DRMS3
Measurements
    •     highly accurate GPS L1/L2 technology
    •     Unfiltered, unsmoothed pseudorange measurement data for low noise, low multipath error, low time domain correlation and high dynamic response
    •     Very low noise L1 and L2 carrier phase measurements with 1 mm precision in a 1 hz bandwidth
    •     Low elevation satellite tracking technology
    •     24 channels L1 C/A Code, L1/L2 Full Cycle Carrier, WAAS/EGNOS1
    •     NMEA-0183: AVR, GSV, hDT, VGK, VhD, ROT, GGK, GGA, GSA, zDA, VTG, GST, PJT, and PJK
    •     5 hz position rate

Physical

Dimensions (W×h x D)
GPS receiver ....14.5 cm × 8.1 cm × 14.5 cm (5.7 in x 3.2 in x 5.7 in)
EPOCh L1/L2 Antenna ............ 16.1 cm diameter x 5.8 cm high
(6.35 in diameter x 2.3 in high)
Weight
Base ...................................... 0.93 kg (2.0 lb)
Rover ...................... 1.18 kg (2.6 lb) with internal battery,
 internal radio*, UhF antenna*
EPOCh L1/L2 Antenna ....................... 0.55 kg (1.20 lb)
Ports
I/O ........................................ DE-9, RS232
GPS Antenna ........................................ TNC
Data Link antenna .......................... BNC (Rover only)*

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