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LAT 2000 Series: Light-Based Geolocation Tags for Birds

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  • Overview
  • Features
  • Specifications
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  • Product Sheet

Building upon the success of several previous generations of archival tags, Lotek Archival Tags (LAT) offer impressive data recording capabilities in an even more compact design.

The LAT series is the ideal data storage solution for any biologist seeking reliable long-term life-cycle-related data for fish, wildlife or avian species.

Two distinct LAT families are available: LAT1000 Series TDRs (time, temperature and depth recorders), and LAT2000 Series geolocators (light-based tags, this page).

  • LAT tag on Sabine’s Gull
    A selection of pressure ranges is available for each tag to ensure the best match for every application.

  • The LAT series features user selectable data resolution settings of up to 12 bits. Opting for a lower resolution allows an increase in the number of samples collected.
     
  • Up to 128 Mbytes of non-volatile memory are available on specific models.
     
  • The LAT series features a sea water switch.
     
  • Four memory management options are available:
    1. Day Log: summarizes on board geolocation and other processes, allowing one to collect data for every day at liberty; a number of “loggables” are available to be recorded in the Day Log, e.g., daily: sea surface temperature, min. and max. pressures, min. and max. temperatures, times of sunrise and sunset, etc.;
    2. Telescoping Log: allows the total times series storage capacity of the tag to be evenly distributed over the entire mission.
    3. Conditional Log: samples recorded (or not) based upon the condition of one or two sampled “loggables”;
    4. Basic Log: straight sampling.
       
  • LAT tags are designed for miscellaneous data collection and data compression strategies aimed at maximizing and optimizing tags' operating life and number of samples taken.
     
  • All LAT archival tags use a USB reader and a communication interface, LAT TagTalk. The reader is practical for field work as it connects to the tags’ gold electrical contacts using minigrabbers – this method is very stable and reduces the risk of interfering with the connection if the tag is moved. The software allows the user to interact with the tag, to create a flexible programming regime and to download the data from the tag.

Light-based geolocating LAT tags:

      Tags with extended memory
  LAT2500 LAT2510  LAT 2800S LAT2800L LAT 2810S LAT2810L LAT2310
      Tubular form factor:  
Dimensions 8mm x 35mm 8mm x 35mm 11mm X 38mm 13mm x 44mm 11mm X 38mm 13mm x 44mm 16mm x 76mm
Weight in air 3.6g 4.25g 6.2g 10.6g 6g 13g 45g
Weight in water 2.25g 2.5g TBD TBD 30g
      Flatpack form factor:  
Dimensions     36mm x 11mm x 7.2mm 36mm x 13mm x 10mm N/A N/A  
Weight in air     5.5g 10g N/A N/A  
Weight in water     TBD N/A  
Memory 128K, 512K 128K, 512K 128 Mbytes 128 Mbytes 128 Mbytes
Memory management Custom Programming Custom Programming Custom Programming Custom Programming Custom Programming
Survival depth 2000 meters 2000 meters 2000 meters 2000 meters 2000 meters
Max. operation temperature 60° C 60° C  60° C 60° C 60° C
Min. operation temperature -5° C -5° C -5° C -5° C -5° C
Number of samples Variable based upon data storage options selected Variable based upon data storage options selected Variable based upon data storage options selected Variable based upon data storage options selected Variable based upon data storage options selected
Sample rate setting >1s in 1 sec. increments >1s in 1 sec. increments >1s in 1 sec. increments >1s in 1 sec. increments >1s in 1 sec. increments
Data download Gold electrical contacts, 
57600 bps
Gold electrical contacts, 
57600 bps
Gold electrical contacts, 
115200 bps
Gold electrical contacts, 
115200 bps
Gold electrical contacts, 
115200 bps
Sea water switch Yes Yes Yes Yes Yes
Standard depth range 50m, 500m, 1000m, 2000m 50m, 500m, 1000m, 2000m 50m, 200m, 500m, 1000m, 2000m 50m, 200m, 500m, 1000m, 2000m 50m, 200m, 500m, 1000m, 2000m
Data resolution Up to 12 bits Up to 12 bits maximum Up to 12 bits maximum Up to 12 bits maximum Up to 12 bits maximum
Processing scale and offset Yes Yes Yes Yes Yes
Sensors Internal Temperature, Pressure, Light Internal & External Temperature, Pressure, Light Internal Temperature, Pressure, Light Internal & External Temperature, Pressure, Light Internal & External Temperature, Pressure, Light
Light sensor stalk No Yes No Yes Yes
Pressure accuracy ±1% ±1% ±1% ±1% ±1%
Pressure resolution 0.05% 0.05% 0.05% 0.05% 0.05%
Temperature measurement -5° to 35° C -5° to 35° C -5° to 35° C -5° to 35° C -5° to 35° C
Temperature accuracy 0.2°C within -5°C to 35°C 0.2°C within -5°C to 35°C 0.2°C within -5°C to 35°C 0.2°C within -5°C to 35°C 0.2°C within -5°C to 35°C
Temperature resolution 0.05° C or better 0.05° C or better 0.05° C or better 0.05° C or better 0.05° C or better
User setup Miscellaneous ways to log data (see Key Features) Miscellaneous ways to log data (see Key Features) Miscellaneous ways to log data (see Key Features) Miscellaneous ways to log data (see Key Features) Miscellaneous ways to log data (see Key Features)
Number of log structures allowed 4 4 4 4 4
Minimum life 12 months 12 months 1 year* 2 years** 1 year* 2 years** 36 months
Expected life To be determined To be determined To be determined To be determined To be determined
Data analysis software Yes Yes Yes Yes Yes

N.B. These specifications are subject to change.
 
* at the sampling interval of every 10 seconds
** at the sampling interval of every 5 seconds
For minimum life expectancy associated with sampling intervals less than these, please contact the appropriate Lotek account manager.

LAT 2800
 
LAT 2500
 
LAT 2510
 
LAT 2500