TX312

Name: TX312
Brand: Campbell Scientific
SKU: 17844
Availability: Discontinued

High Data Rate GOES Transmitter

TX312

End of life

High Data Rate GOES Transmitter

Pricing

Model:: TX312
Item Number:: 17844
Warranty:: 1 year
Lead time:: 21 days

Overview

TX312 HDR GOES Transmitter

The TX312 is a satellite transmitter that uses the GOES satellite system to provide one-way communications from a data collection platform (DCP) to a receiving station. The TX312 complies with the High Data Rate (HDR) specifications and supports transmission rates of 100, 300, and 1200 bps.

Note: Services and support are no longer available for the TX312.

Technical Description

The TX312 uses the GOES satellite system to provide one-way communications from a data collection platform (DCP) to a receiving station. This satellite transmitter complies with the High Data Rate (HDR) specifications. Supported transmission rates are 100, 300, and 1200 bps. Because clock accuracy is critically important for GOES satellite telemetry, the TX312 includes a robust, TCXO-based real-time clock and a GPS receiver. The TX312 is compatible with most of our data loggers. (See the Compatibility information.)

GOES System

The GOES system is administered by the National Environmental Satellite Data Information Service (NESDIS). NESDIS assigns addresses, uplink channels, and self-timed/random transmit time windows. Self-timed windows allow data transmission only during a predetermined time frame. Random windows are for applications of a critical nature (e.g., flood reporting) and allow transmission immediately after a threshold has been exceeded.

TX312 and SAT HDR GOES Comparison

The TX312 replaced the SAT HDR GOES in 2005. The TX312 provides the following advantages over its predecessor, the SAT HDR GOES:

Up to 28 days of operation between GPS fixes
Every unit tested by Campbell Scientific in an environmental chamber to ensure the unit operates within specifications
Additional LEDs that indicate transmitter’s operation
Easier to use Windows-based software for configuring the non-volatile setups

Benefits

NESDIS certification in process
Automatic GPS correction of clock and oscillator drift
Operates up to 28 days between GPS fixes
Independent self-timed and random data buffers
Diagnostics and status information can be sampled by the data logger and transmitted as part of the data stream
Available on GSA MAS Contract Number GS-25F-6042D
Readily added or retrofitted to existing Campbell Scientific systems
Non-volatile setups configured with Windows-based software

Specifications

Operating Voltage Range: 10.8 to 16 Vdc
Supply Current @ 12 Vdc: 5 mA
(at idle)
Supply Current @ 12 Vdc: 2.6 A
(during transmission)
Transmission Data Rates: 100, 300, and 1200 bps
Channel Bandwidth: 1.5 kHz
(@ 100 bps transmission rate)
Channel Bandwidth: 1.5 kHz
(@ 300 bps transmission rate)
Channel Bandwidth: 3.0 kHz
(@ 1200 bps transmission rate)
Output Power: Complies with NESDIS DCPRS Certification Standards, Section 4.
For 1200 bps, it has a nominal EIRP of 51 dBm and a maximum EIRP of 53 dBm, assuming appropriate antenna. For 100/300 bps, it has a nominal EIRP of 48 dBm and a maximum EIRP of 50 dBm, assuming appropriate antenna.
Frequency Range: 401.7 MHz to 402.1 MHz
Dimensions: 27.7 x 5.3 x 16.2 cm
(10.9 x 2.1 x 6.38 in.)
Weight: 0.95 kg
(2.1 lb)