Product overview
The CroSkylink C21D-20 is a broadband access and data transmission device built around a flat system architecture. It supports point-to-point links, point-to-multipoint star networks and Mesh networks, with automatic power and frequency control. Bandwidth options are 1.4MHz, 3MHz, 5MHz, 10MHz and 20MHz, and maximum transmit power is 30dBm. Frequency options are 800M, 1.4G, 1.5G and 2.4G. Frequency customization depends on customer requirements and the field environment; users cannot modify that customization themselves.
Transmission distances are up to 20km for star networking and up to 10km for MESH networking, with the typical application configuration specifying point-to-point communication, dual antennas, a 1437MHz working band, 20M bandwidth, maximum transmit power, 25°C, 50% humidity and rated voltage supply. Equipment connections comprise two Ethernet ports, two RS232 serial ports and two 3.3V TTL serial ports, all with PH2.0 interfaces. The device requires 12V±10% power, consumes a maximum of 8W and operates from -20°C to +55°C at 5%–95% RH.
Installation requires correctly connected antennas: missing or improper connections can damage the device, and improper connections can cause serious performance differences. Receiving-port signal strength must remain below 10dBm. Antenna spacing must exceed 0.1m within the same module and 1m between modules; these spacing requirements apply to both powered-on and powered-off modules. Continuous operation also requires proper heat dissipation. The storage temperature range is -40°C to +85°C, distinct from the narrower operating temperature range.
Specifications
| Specification | Value & conditions |
|---|---|
| Product identity | CroSkylink C21D-20 |
| Product purpose and architecture | Broadband access and data transmission device with a flat system architecture and multiple bandwidth allocations |
| Network topologies | Point-to-point, point-to-multipoint star and Mesh networks |
| Transmission distances | Star network: up to 20km; MESH network: up to 10kmTypical application configuration: point-to-point communication, dual antenna working mode, 1437MHz working band, 20M bandwidth, maximum transmit power, 25°C, 50% humidity and rated voltage supply. |
| Operating voltage | 12V±10% |
| Maximum power consumption | 8W |
| Transmit power | 30dBm (max) |
| Storage temperature | -40°C to +85°C |
| Operating temperature | -20°C to +55°C |
| Humidity | 5%–95% RH |
| Bandwidth options | 1.4MHz/3MHz/5MHz/10MHz/20MHz |
| Frequency bands | 800M/1.4G/1.5G/2.4G (customizable)Frequency customization is based on customer requirements and field environment; users cannot modify it themselves. |
| Automatic controls | Automatic power control and frequency control |
| Ethernet interfaces | 2 Ethernet ports with PH2.0 interface |
| RS232 interfaces | 2 RS232 serial ports with PH2.0 interface |
| TTL interfaces | 2 3.3V TTL serial ports with PH2.0 interface |
| Typical application configuration | Point-to-point communication; dual antenna working mode; 1437MHz working band; 20M bandwidth; maximum transmit power; 25°C working temperature; 50% humidity; rated voltage supply |
| Antenna connection requirement | Antenna connection is mandatory; improperly connected antennas can damage the device or cause serious performance differences |
| Heat dissipation requirement | Proper heat dissipation requiredContinuous operation. |
| Signal strength limit | Less than 10dBmReceiving port. |
| Antenna spacing requirements | Within the same module: greater than 0.1m; between modules: greater than 1mApplies to powered-on and powered-off modules. |
