TX320

Name: TX320
Brand: Campbell Scientific
SKU: 27314
Availability: Discontinued

High Data Rate (HDR) GOES Transmitter

TX320

End of life

High Data Rate (HDR) GOES Transmitter

Pricing

Model:: TX320
Item Number:: 27314
Warranty:: 1 year
Lead time:: 7 days

Overview

TX320 HDR GOES Transmitter

Campbell Scientific’s TX320 is a high data rate (HDR) transmitter that provides communications, via GOES satellites, from a Data Collection Platform (DCP) to a receiving station. It is compatible with most Campbell Scientific data loggers and offers a convenient telemetry option for remote DCPs in the Western Hemisphere.

Technical Description

The TX320 supports data transmission rates of 300 and 1200 bps. Because clock accuracy is critically important for GOES satellite telemetry, the TX320 includes a robust, temperature-compensated-oscillator (TCXO) based clock and a GPS receiver. The real-time clock's precision allows independent operation for up to 28 days without GPS correction.

GOES System

GOES satellites have orbits that coincide with the Earth’s rotation, allowing each satellite to remain above a specific region. GOES satellites cover the western hemisphere.

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.

Data Collection Platform (DCP) Equipment

TX320 GOES satellite transmitter (includes an SC12 cable)
17992 GPS antenna and the 18017-L cable. The GPS antenna mounts to the end of a crossarm via the 7623 ¾-in. threaded pipe and a 1049 NU-RAIL fitting or CM220 Mount.
Data logger
25316 11-dBi Right-Hand Circular Polarized (RHCP) Yagi antenna with mounting hardware.
COAXNTN-L RG8 antenna cable
ENC16/18 or larger enclosure
Power supply consisting of Campbell Scientific’s BP12 12-Ahr, BP24 24-Ahr, or BP84 84-Ahr battery pack, CH200 or CH150 regulator, and SP10 10-W or SP20 20-W solar panel
31320 Surge Protection Kit (optional)

Retrieving Data from the Ground Receiving Station

Choose one of the following methods:

Internet (see NESDIS for requirements)
Domsat
LRGS
DRGS (Direct Readout Ground Station)

Benefits

Transmission rates of 300 and 1200 bps
Transmitter certified as High Data Rate version 2 compliant
NESDIS-certified transmitter
Automatic GPS correction of clock and oscillator drift
Very stable clock that provides up to 28 days of operation between GPS fixes for more reliable operation in areas with poor GPS reception
Diagnostics and status information can be sampled by the data logger and transmitted as part of the data stream
Readily added or retrofitted to existing Campbell Scientific systems
Non-volatile setups configured with Windows-based software
USB port for connecting PCs to setup and perform diagnostics
Independent self-timed and random data buffers

Specifications

Operating Voltage Range: 10.8 to 16 Vdc
Transmission Data Rates: 300 and 1200 bps
Frequency Range: 401.7 MHz to 402.1 MHz
Operating Temperature Range: -40° to +60°C
Storage Temperature Range: -55° to +70°C
Dimensions: 24.9 x 5.3 x 15.8 cm
(9.8 x 2.1 x 6.2 in.)
Weight: 1.02 kg
(2.25 lb)

Supply Current @ 12 Vdc

Idle or Sleep: 5 mA
During GPS Fix: < 70 mA
(for 15 minutes per day)
Transmission: 2.6 A

Channel Bandwidth

300 bps Transmission Rate: 750 Hz
1200 bps Transmission Rate: 2250 Hz

USB Port

Connector: USB type B
Command Protocols: ASCII Command Protocol

CS I/O Port

Signal Levels: TTL
Interface Protocol: Campbell Scientific Synchronous Device Communication
(SDC)
Command Protocol: ASCII Command Protocol or Binary Command Protocol
ASCII command protocol is described in “G5 ASCII Command Protocol (Document number 700-G5-CMND-ASCII)."

Binary packet protocol is described in “G5 Binary Command Protocol (Document number 700-G5-CMND-BIN)."

RS-232 Port

Signal Levels: RS232C
Connector: DB9F
Command Protocol: ASCII Command Protocol or Binary Command Protocol
ASCII command protocol is described in “G5 ASCII Command Protocol (Document number 700-G5-CMND-ASCII)."

Binary packet protocol is described in “G5 Binary Command Protocol (Document number 700-G5-CMND-BIN)."

Output Power

Standards: Complies with NOAA/NESDIS, GOES DCPRS Certification Standards at 300 bps and 1200 bps, version 2.0.
For a 1200 bps Link: DCPRS shall operate with an EIRP of 43 to 47 dBmi, assuming appropriate antenna.
For a 300 bps Link: When transmitting to the GOES-13 or later satellites, the DCPRS shall operate with an effective EIRP of 37 to 41 dBmi, assuming appropriate antenna.
Example Output Power: 11.2 W @ 1200 bps transmission rate