TX321

Name: TX321
Brand: Campbell Scientific
SKU: 32248
Availability: Discontinued

Satellite Transmitter for GOES or Meteosat

TX321

End of life

Satellite Transmitter for GOES or Meteosat

No longer available to order

This product is retained for service, documentation, and compatibility information.

Replaced by

TX325
Satellite Transmitter for GOES CS2/v2.0

Model:: TX321
Item Number:: 32248
Warranty:: 1 year

Overview

The TX321 is a GOES and Meteosat satellite data transmitter. It provides an easy and reliable way for Campbell Scientific data collection platforms (DCP) to transmit data over geostationary satellites. The TX321 is typically used by government agencies and sponsored research organizations for the purpose of collecting environmental data.

Technical Description

The TX321 is designed for use on the NOAA GOES Data Collection System and the EUMETSAT Meteosat Data Collection Services satellite networks. These networks use geostationary satellites and ground stations to receive and relay data transmitted from remote data collection platforms (DCP), such as those provided by Campbell Scientific. These DCPs are typically owned and operated by government agencies and sponsored research organizations. Users are given a frequency and time slot for their transmissions.

Data Collection Platform (DCP) Equipment

TX321 Satellite Transmitter
17992 or 31182 GPS antenna and their antenna mounts and coaxial cables
25316 11 dBi Right-Hand Circular Polarized (RHCP) Yagi antenna and coaxial cable
Data logger
Power supply, such as Campbell Scientific’s BP12 or BP24 battery, CH150 or CH200 charge regulator, and SP10 10 W or SP20 20 W solar panel

GOES System Authorization Procedure

Non-U. S. government agencies and research organizations must have a sponsor from a U.S. government agency. Prospective GOES users must receive formal permission from NESDIS, by doing the following:

Fill out the System Use Agreement (SUA) application form. The form can be submitted online or sent to:

GOES DCS SUA Processing Unit NOAA,
Satellite Services Division
4231 Suitland Road, Rm 1646
Suitland Federal Center Suitland, MD 20746
Tel: 301-817-4563
Fax: 301-817-4569
Email: Letecia.Reeves@noaa.gov
Following approval, NESDIS sends a Memorandum of Agreement (MOA). The MOA must be signed and returned to NESDIS.
After the MOA is approved, NESDIS will issue a channel assignment and an ID address code.
NESDIS must be contacted to coordinate a start-up date.

Meteosat System Authorization Procedure

Complete and submit the EUMETSAT DCP Admission form.

Benefits

GOES High Data Rate Version 2, Meteosat SRD, and International DCS operation
Very low power consumption when idle (< 5 mA @ 12V)
Transmissions continue for 28 days if GPS is lost
Configuration and diagnostics easily performed by data logger or computer
Drop-in replacement for Campbell Scientific TX320, TX312, and SAT HDR GOES

Specifications

Transmission Distance or Area: GOES: North America
Meteosat: Europe
Transmissions Supported: Timed and random
ASCII and pseudo-binary message
Transmit RF Out Connector: Type N jack
Radio Module: G6 OEM
Operating Temperature Range: -40° to +60°C
Storage Temperature Range: -55° to +70°C
Case Dimensions: 18.54 x 12.7 x 3.81 cm
(7.3 x 5 x 1.5 in.)
Maximum Dimensions: 20.96 x 13.34 x 4.06 cm
(8.25 x 5.25 x 1.6 in.) including connectors
Weight: 0.77 kg
(1.7 lb)

Supply Power

Supply Voltage: 10.8 to 16 Vdc
Typical Current Drain: < 5 mA
(at 12 Vdc when idle)
< 100 mA
(at 12 Vdc during GPS fix)
< 2.6 A
(at 12 Vdc during transmit)
Connector: Removable 2 pin screw terminal, 5 mm pitch

Satellite GOES

Standards: NOAA/NESDIS GOES High Data Rate Certification Standards version 2
Baud Rates: 300 and 1200 bps
Transmit Power: When transmitting to GOES-13 or later, transmit EIRP shall be 37 to 41 dBm for 300 bps and 43 to 47 dBm for 1200 bps.
Settings default for use with 11 dBi YAGI antenna
31.5 dBm
(300 bps default)
37.5 dBm
(1200 bps default)
38 dBm
(maximum)
Frequency Range: 401.701 to 402.0985 MHz
Initial Frequency Stability: ±20 Hz disciplined to GPS
(GPS fix occurs after power up and once per day thereafter.)
Channel Bandwidth: 3 kHz
(300 bps)
1.5 KHzNOAA/NESDIS GOES High Data Rate Certification Standards version 2
(1200 bps)

Satellite Meteosat

Operation: EUMETSAT Meteosat SRD
Baud Rates: 100 bps
Transmit Power: Meteosat SRD transmit EIRP should be 43.25 to 52 dBm.
Default configuration for use with 11 dBi YAGI antenna
37.5 dBm
(100 bps default)
41.5 dBm
(maximum)
Frequency Range: 402.0355 to 402.4345 MHz
Initial Frequency Stability: ±20 Hz disciplined to GPS
(GPS fix occurs after power up and once per day thereafter.)
Channel Bandwidth: 3 kHz
(100 bps)

GPS Receiver

Receiver Type: 3.3 V active
Connector: SMA jack

Timekeeping

Initial Accuracy: ±100 μs
(synchronized to GPS)
Drift: ±10 ms/day
(without GPS)
GPS Schedule: 1 fix at power up
(1 fix per day afterwards)
Transmission Continuation without GPS Fix: 28 days

Interface Connectors

USB: Micro B, USB device
RS-232: DB9 F, DCE, 3 wire RS-232
CS I/O: DB9 M, SDC 4
Satellite RF Transmit Out: Type N jack
GPS: SMA jack
Power: Removable 2 pin

Interface Command Protocols

Binary Command Protocol: Available on CS I/O when connected
Available on RS-232 if CS I/O is not connected
ASCII Command Protocol: Available on all ports

25316 Transmit Antenna

Gain: 11 dBi
Antenna Type: Right-hand circular polarization Yagi
Connector: Type N female
Wind Load: ~100 knots

17992 GPS Antenna

Antenna Type: 3.3 V active dome, pipe mount
Gain: 28 dBi
Connector: TNC jack

31182 GPS Antenna

Antenna Type: 3.3 V active patch, magnetic mount
Gain: 27 dBi
Connector: SMA plug

Accessories

(3)

Common Accessories

(13)

Replacement Parts

(6)

Similar Products

(2)

Compatibility

Power Supply

Typical power supply is a BP12 12 Ahr or BP24 24 Ahr battery, CH150 or CH200 regulator, and an SP10 or SP20 solar panel. The BP85 or a user-supplied deep-cycle rechargeable battery can be used if the system contains higher power consumptive devices such as continuous bubblers or heated rain gages.

Note: Because of the peak power draw during transmit, do not connect to the 12V output of a data logger.