Several ingenious features are incorporated in this product, eliminating the user's requirement to configure the tag prior to deployment. These features also optimize tag performance, including memory usage and pressure resolution, as they adapt to operational conditions.

Time Extension Recording
The configuration of tags normally requires anticipating the mission length and the animal's behavior to set the appropriate sampling interval. Time Extension Recording (TER) is an advanced memory management feature that adjusts the sampling interval as recording proceeds so that, regardless of the length of the recording session, the record is detailed and the full session is recorded. TER continuously optimizes memory usage over the entire deployment. Temperature and Pressure are sampled at the same moment for ease of data analysis.

Here's how TER works: the logger begins recording at a base sampling interval of 1 sample every 14.063 seconds or 256 samples per hour. When its memory is full, the logger doubles its sampling interval and continues recording, overwriting every other sample in memory, and when its memory is filled at that sampling interval it doubles its sampling interval again. The process can repeat almost indefinitely. You can download a record of the full recording session at any time. As an option, a maximum interval can be specified at time of purchase to prevent unwanted dilution of the data's temporal resolution. The tag memory and sampling interval are reset using a magnet.

Depth Auto-Scaling
Depth Auto-Scaling automatically scales the pressure range to suit the requirements of the application to provide finer resolution and accuracy when needed. It initially records at a range of one-fourth of the instrument maximum. If that range is exceeded, it switches to half of the instrument maximum. If that is exceeded, it switches to the maximum range. This process is non-reversible.

LTD_1110

	LTD_1100	LTD_1110
Dimensions	8mm X 16mm X 27mm	11mm X 32mm
Weight in air	5 grams	5 grams
Weight in Fresh Water	~ 2 grams	~ 2 grams
Memory	32K, 64K	32K, 64K, 128K
Memory Management	Time Extension Recording	Custom Programming
Survival Depth	1000 meters	1000 meters
Max Operation Temperature	35° C	35° C
Min Operation Temperature	-5° C	-5° C
Data Points (Temp and Pressure)	16K, 32K	16K, 32K, 64K
Optical Download	Yes, uses RDR1100	Yes, uses RDR1100
Data Download (Optical)	19.2 kB/sec	19.2 kB/sec
Standard Depth Range	50, 500, 1000 m	50, 500, 1000 m
Depth Auto-Scale	1/4, 1/2, Full Scale	1/4, 1/2, Full Scale
Data Resolution	8 bits	8 bits
Sensors	Temperature and Pressure	Temperature and Pressure
Pressure Accuracy	+/-1% of Current Scale	+/-1% of Current Scale
Pressure Resolution	Scale / 256	Scale / 256
Temperature Measurement	-5° to 35° C	-5° to 35° C
Temperature Accuracy	better than 0.3° C	better than 0.3° C
Temperature Resolution	0.20° C (avg.)	0.20° C (avg.)
User Setup	Not Required	Not Required
Time Extension Recording	Yes	Yes
Typical Life	>3 years	>2 years
Number of Records	32K, 64K	32K, 64K, 128K
Data Analysis Software	Included (TagTalk1100)	Included (TagTalk1100)

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