卫星通信/ ST-21
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ST-21.argos.Platform Transmitter Terminal
Services Available
Repair 不
校准 不
Free Support 不

Overview

Campbell Scientific’s ST-21 is a Service Argos-certified Platform Transmitter Terminal (PTT ) that transfers data from the data logger site to the Argos Data Collection and Location System via NOAA polar orbiting satellites. This transmitter is well suited for remote meteorological and environmental data collection applications, including mobile and high-latitude installations. The ST-21 is compatible with our newer data loggers.

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Benefits and Features

  • Well-suited for remote meteorological and environmental data-collection applications, including mobile and high-latitude installations
  • Provides uplink capability for up to eight unique ID codes, frequencies, and repetition periods
  • 最多支持七个独立的Argos数据缓冲区，可在实时填充
  • Transmits variable-length Argos messages with either 20- or 28-bit ID codes
  • Allows researchers to forgo a rigorous certification process
  • Includes an autorepeat feature that allows the ST-21 to repeat data without host intervention
  • Provides a fail-safe feature that alerts users upon communication link or host failure
  • 允许在实时或坎贝尔科学中设置ID和重复率

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Detailed Description

While Campbell Scientific's ST-21 Argos PTT is based on Telonics' ST-21, they are not equivalent; our ST-21 includes a case, voltage regulator, and our SDC communication interface.

Please note that when ordering the transmitter, the customer needs to provide Campbell Scientific with the number of buffers, repetition rate, decimal ID, Dex ID, frequency, and fail safe information.

To use the Argos system, you must receive formal permission from Service Argos and pay a fee. The data must be used for environmental purposes. Examples include meteorological/hydrological stations, ship tracking, volcano monitoring, and seismic data.

Platform Transmitting Terminal (PTT) Equipment

  • ST-21.argos.transmitter (includes an SC12 cable)
  • CR800，CR850，CR1000或CR3000 Datalogger
  • 12022天线（包括天线电缆和安装支架）
  • Environmental enclosure
  • Power supply consisting of our BP12 12-Ahr or BP24 24-Ahr battery pack, CH100 or CH200 regulator, and SP10 10-W or SP20 20-W solar panel

从地面接收站检索数据

选择以下方法之一：

  • Phone modem with MNP level 4 error correction (most Hayes-compatible modems contain this error-checking protocol; check the operator’s manual for your modem) and user-supplied communication software (e.g., Procomm Plus, Crosstalk).
  • Internet
  • Telnet
  • Email

Specifications

Operating Temperature Range -30°至+ 70°C
电源电压 12 V (nominal)
输出阻抗 50Ω
High Power Level 800 mW typical (27 to 31 dbm)
argos.Transmission Frequency 401.618 to 401.680 MHz
Modulation (BPSK) -1.1 to +1.1 ±0.1 radians
杂散排放量 -45 dB.
Transmission Distance or Area Worldwide
当前的流失
  • 1.12 mA (at 12 Vdc, quiescent)
  • 375 MA（12 VDC，传输）
服务要求 必须收到服务argos的正式许可并支付费用。必须使用数据进行环境目的。
Dimensions 19.05 x 3.18 x 5.72 cm (7.5 x 1.25 x 2.25 in.)
Weight 224 g (7.9 oz)

Compatibility

不te:以下显示了显着的兼容性信息。它不是所有兼容或不兼容产品的全面列表。

Data Loggers

Product Compatible 不te
CR1000.(retired)
CR1000.X
CR200X(retired)
CR206X(retired)
CR211x.(retired)
CR216X(retired)
CR295X(retired)
CR300.
CR300.0(retired)
CR5000(retired)
CR6.
CR800
CR850.
CR9000x.(retired)

安装设备

Product Compatible 不te
ENC10 / 12.
ENC10 / 12.R
ENC12/14
enc14 / 16.
ENC16/18

额外的兼容性信息

数据记录器考虑因素

Our data loggers can format the data as bits per data point, allowing the user to select the resolution used for each data point.

Enclosure Considerations

ST-21需要干燥的非凝聚环境;建议坎贝尔科学围栏。提供索环和螺钉，以将ST-21的法兰连接到外壳的背板。

订阅Argos.

要订阅Argos，必须完成以下步骤：

  1. Obtain a Program Application Form from the Service Argos website (www.argosinc.com) or from one of the following offices:

    不rth America
    CLS America, Inc.
    1441 McCormick Drive, Suite 1050
    Largo, MD 20774
    Tel (301) 925-4411
    E-mail: useroffi ce@argosinc.com
    Website:www.clsamerica.com

    欧洲
    CLS /服务argos
    8-10，rue hermes
    Parc Technologique du Canal
    31520 Ramonville Saint-Agne, France
    电话+33（0）5 61 39 47 00
    E-mail: info@cls.fr
    Website:www.cls.fr

  2. 填写并提交申请表的美联社propriate Service Argos office. Service Argos will send you a program review stating whether your program has been approved.
  3. Following approval, send a Technical File that describes the required data processing and type of results to the appropriate Service Argos office.
  4. 填写并返回服务协议到适当的服务Argos Office。

Frequently Asked Questions

Number of FAQs related toST-21.:5

展开全部全部收缩

  1. ST-21设计用于通过电线（线），同轴电缆或光纤电缆单通或多通道通信使用？

    The ST-21 is not used via wire. The ST-21 is only used for one-way data transmission via radio frequency to polar-orbiting spacecraft. Limited data throughput with very low power requirements works best at high latitudes.

  2. Can an ST-21 be used for both transmitting and receiving data?

    不. The ST-21 is designed for one-way communication only.

  3. 每天可以使用ST-21传输多少数据？

    数据吞吐量取决于纬度。航天器是极性轨道，其在更高的纬度上产生更频繁的卫星通过。根据成本，每个卫星通行量可以提供15到90个数据点。

  4. 如何使用卫星通信下载数据？

    Email delivery or web-based access.

  5. What is the cost of the Argos data service?

    费用由CLS（Argos）设定。通常每天使用服务的费用。F或细节，contactargos..

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