SRX 400 Receiver/Datalogger

SRX_400 The Lotek SRX 400A is a rugged 4 MHz telemetry receiver and datalogger with advanced tracking capabilities and enough flexibility to support manual tracking, automatic datalogging, direction finding and unmanned, remote data acquisition.

Built to Lotek's exacting quality standards, the SRX 400A forms the telemetry backbone for some of the most sophisticated radio and acoustic tracking projects being conducted around the world today.

As part of a complete telemetry system, it works with a range of peripherals and a comprehensive library of operating software to help deliver previously unimaginable insights into the movements and behaviour of fish and wildlife.

Integrated design
All tracking, data collection, data storage and communication functions are incorporated into a single compact instrument. Additional interconnected data storage devices are not required.

Informative LCD display
24 character x 2 line LCD display affords view of complete six digit frequency display, numeric value of receiver gain setting as well as scan/operating status messages, menu prompts, diagnostic messages, etc. Screen backlight can be switched on or off to aid in viewing or conserve power.

User-definable scan times
Scan rate is user selected from 0.1 second to 10 minutes in 0.1 second increments affording greater ability to optimize scan times.

Separate controls for audio & gain
Separate audio (knob) and gain (keypad) controls ensure maximum detectability of signal and listening comfort. Actual level of gain is displayed on the LCD.

Remote communications through RS-232 port
RS-232 port fully configurable to provide serial communications to an external computer or Hayes compatible modem for remote communications via telephone, cellular phone or satellite transmitter.

Audio noise blanking
Operator switchable audio noise blanking virtually eliminates background noise from the audio output. This feature greatly enhances user comfort level when manual tracking.

Frequency recall
Individual deleted frequencies or whole tables can be recalled using the keypad. Re-entering each frequency for subsequent field studies is thereby unnecessary.

High resolution signal strength display
Relative signal strength can be displayed in numeric or graphic formats with 0.25 dB resolution. This is particularly useful for left/right direction finding in aircraft or for determining location of transmitters at close quarters. Signal strength can be accessed while in the scan routine.

Convenient frequency memory tables
User can store frequencies in any one of 16 non-volatile partition memory tables. Each table can be scanned separately providing optimum scanning flexibility/efficiency when animals are located in different geographic areas or are groups in separate studies.

Remote loading of frequency tables
Frequency lists can be uploaded/downloaded from a computer to the receiver frequency tables via the RS-232 port. This feature enables customizing of frequency tables via any office computer prior to field work, e.g., integration of tables from other researchers prior to a flight.

Automatic scanning
Scan mode allows user to define/scan range of frequencies until an active signal is found. Maximum signal intensity is determined and displayed with the frequency.

Flexible pulse display
Either pulse rate (beats per minute) or interval period (milliseconds) can be displayed, allowing you to both identify signals and determine temperature data from pulse rate or interval.

General

Operating Voltage Range

11-18 VDC

Operating Current

less than 150 mA @ 12v

Battery Life
(from full charge to recharge state)

Standard:
18 hrs. @ 20°C (LCD back light off)
13 hrs. @ 20°C (LCD back light on)

Memory Retention Battery

10 years shelf life; 6 months with main battery discharged

Operating Temperature Range

-30°C to +50°C (LCD: -20°C)

Weight