这个产品是无效的且被替换: RF452.
| Services Available | |
|---|---|
| Repair | Yes |
| Calibration | No |
| Free Support | Yes |
概览
RF450 是一款跳频的射频电台，在902 到 928 MHz 无需许可的波段内工作。电台功率为 1 W，为长距离（13 到 60英里，依赖于天线和视距）的无线网络通讯提供了一种解决方案。特别设计用于我们的PakBus®数据采集器，RF450 特别适合于 点-多点 的PakBus网络。
优势与特点
- 不需要逐个的FCC许可
- 最大的传输距离为60英里（96千米），实际可靠的传输距离近似约13英里（20.9千米）
- 低电流消耗
- 更宽的工作温度范围
- 高速数据传输速率
- 高抗噪 — 在多噪声环境中提供更好的性能
- 无误码通讯 — 32位循环冗余校验（CRC），带自动带传送功能
- 具有独立的路由器/转发器（可多达8个转发器）的能力
- 实时的远程诊断和设置，透明的网络通讯
图像
3D/CAD 文件：
技术说明
RF450 包含一个由FreeWave Technologies生产的电台模块，和一个坎贝尔接口板。它减小了来自其它射频设备的无线电干扰的敏感性。射频电台在相对宽波段的频带上，传播正常的窄波段信息讯号。这种处理方法使得通讯噪声更低，和更不易受无线电源的干扰，例如寻呼机和蜂窝电话。
产品规格
| Operating Frequency | 902 to 928 MHz |
| Radio Type | Frequency Hopping Spread Spectrum (FHSS) Transceiver |
| FCC ID | KNY-6231812519 |
| Canada ID | 2329B-DGR09RAS |
| Power Output | 5 mW to 1 W (user selectable) |
| Transmit Range | Maximum transmission distance of 60 miles, and realistic reliable transmission distance of ~13 miles. (All transmission distances assume line-of-sight and appropriate antenna; line-of-sight obstructions, RF interference, and antenna type affect transmission distance.) |
| Modulation | 120 or 170 kbps (GFSK) |
| Occupied Bandwidth | 230 kHz (at 60 dB) |
| Channel Spacing | 230 kHz |
| Hopping Patterns | 15 per band, 105 total (user selectable) |
| Hopping Channels | 50 to 112 (user selectable) |
| Hopping Bands | 7 (user selectable) |
| Frequency Zones | 16 (7 channels per zone) |
| Receiver Sensitivity |
|
| Receiver Selectivity |
|
| System Gain | 140 dB |
| Error Detection | 32-bit CRC (retransmit on error) |
| Data Encryption | Substitution, dynamic key |
| Link Throughput | 115.2 kbps (maximum) |
| Data Interface Protocol | CS I/O, RS-232, DCE, ME and SDC (user selectable) |
| RS-232 Baud Rate | 1200, 4800, 9600, 19.2k, 34.4k, 57.6k, or 115.2k bps (user selectable) |
| RS-232 Connector | 9-pin D socket (female) (4 wire: Tx, Rx, CTS, GND) |
| CS I/O Connector | 9-pin D pin (male) (Newer data loggers provide power to the radio on the CS I/O connector; data loggers purchased before December 1997 require the #14291 Field Power Cable.) |
| Antenna Connector | Type SMA socket (female) |
| Power Connector | Barrel plug, center positive 12 V (used to connect the 14291 Field Power Cable or 15966 AC adapter) |
| Input Voltage | 7 to 28 Vdc |
| Operating Temperature Range | -40° to +75°C |
| Relative Humidity | 0 to 95% RH (non-condensing) |
| Dimensions |
|
| Weight | 0.3 kg (0.7 lb) |
Average Current Drain @ 12 Vdc |
|
| Sleep | 7 mA |
| Idle | 22 mA |
| Receiving | 76 mA |
| Transmitting | 500 mA |
兼容性
Please note: The following shows notable compatibility information. It is not a comprehensive list of all compatible products.
数据采集器
| Product | Compatible | Note |
|---|---|---|
| CR200X (retired) | The internal radio of the CR200X-series dataloggers should not be used with the RF450. | |
| CR206X (retired) | The internal radio of the CR200X-series dataloggers should not be used with the RF450. | |
| CR211X (retired) | The internal radio of the CR200X-series dataloggers should not be used with the RF450. | |
| CR216X (retired) | The internal radio of the CR200X-series dataloggers should not be used with the RF450. | |
| CR295X (retired) | The internal radio of the CR200X-series dataloggers should not be used with the RF450. | |
| CR3000 (retired) | ||
| CR5000 (retired) | The RF450 does not support a connection with more than one CR5000 or CR9000X datalogger, because the host RF450 radio does not support slave switchable addressing and our CR5000 and CR9000X dataloggers do not have PakBus routing protocol. | |
| CR6 | ||
| CR800 (retired) | ||
| CR850 (retired) |
Additional Compatibility Information
Other Spread-Spectrum Radios
The RF450 can be used in networks containing FGR-115 radios. Campbell Scientific does not recommend using the RF450 with our RF401-series radios or RF430-series radios.
Enclosure Considerations
A desiccated, non-condensing environment is required. The RF450 includes built-in keyhole flanges for mounting to the backplate of a Campbell Scientific enclosure.
下载
Device Configuration Utility v.2.29 (54 MB) 15-11-2023
A software utility used to download operating systems and set up Campbell Scientific hardware. Also will update PakBus Graph and the Network Planner if they have been installed previously by another Campbell Scientific software package.
Supported Operating Systems:
Windows 11 or 10 (Both 32 and 64 bit)
常见问题解答
RF450: 6
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-
Any RS-232 transmission will work with the RF450.
-
There are many cavity- and notch-type filters available from third-party manufacturers.
-
No. They do not use the same over-the-air communications protocol. In fact, unless extra steps are taken, the two models will cause interference with each other.
-
Yes. This type of connection is called a PakBus network. The intermediate CR1000 needs to be enabled as a router, and a suitable telemetry link needs to exist between the two CR1000 dataloggers.
-
Antenna selection depends on multiple criteria:
- Consider how many stations a particular station needs to communicate with. For remote stations in communication with only one repeater or base station, a directional or Yagi antenna may be an appropriate choice. In contrast, repeater stations that receive data from many different locations will probably require an omnidirectional antenna.
- Consider if a high-gain antenna is needed to overcome the path between two points. Higher-gain antennas are larger and more expensive.
To help with antenna selection and site placement, consider renting and using a demo kit to test the pathway quality. Campbell Scientific offers a 900 MHz demo kit for the RF401, RF430, CR206X, and AVW206, as well as a demo kit for the RF450. Contact Campbell Scientific for assistance.
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