SCAA
SCAA
OrderableStand-Alone ASOS/AWOS
Overview
The Stand-Alone ASOS/AWOS, or SCAA, is a data collection package consisting of power distribution and control circuitry, as well as data collection and dissemination circuitry. The system is housed in an aluminum, powder-coated enclosure. Typically, the SCAA consists of a single cabinet connected to sensors and external data sources. A single data collection platform (DCP) may also be used with the SCAA.
The SCAA continuously gathers and processes raw data from the adjacent sensors (e.g., voltages, extinction coefficients, data counts) and may condition these data. Data conditioning may include such processes as sampling, formatting, and scaling.
For information on how the National Weather Service (NWS) uses Campbell Scientific Automated Surface Observing System (ASOS) solutions, visit https://www.weather.gov/asos/CurrentEvents.html.
Key Advantages
A single cabinet connected to sensors and external data sources
Benefits
- Able to acquire data from up to 15 directly connected sensors
- AeroX™Audio 105 Audio Controller included for digital voice file transmission over ATIS, dial-up voice modem, GTA radio integration, or ATC handset
- System diagnostics visibility through CampbellAero™ Automated Weather Observing System (AWOS) software's user interface
- Hot standby redundant embedded controllers with auto failover capability to increase system uptime
- Simplified replacement via configuration files moving from backup controller to replacement controller
- Redundant 24 Vdc power supplying two serial servers
- CR1000X Measurement and Control Datalogger included for sensor integration and system diagnostics
- FIPS-compliant access point for TCP/IP communications
- 2,000 W UPS for battery backup power
Specifications
- Operating Temperature Range
- -60° to +120°F
- Operating Humidity Range
- 0 to 100% RH
- Wind Loading
- Up to 231.75 km/h
(144 mph)
- IP Rating
- IP66
- Solar Insolation Rating
- 90 W/ft2 at 120°F
- Pressure Rating
- Up to 15.7 inHg
Mechanical
- Single Cabinet Design
- SLEP 1.0 enclosure dimensions
- Single Cabinet Design
- Drop-in replacement cabinet for legacy SCAs
- Internal Mounting Arrangements
- DIN rail mounting for system components
- Internal Mounting Arrangements
- Keyed hole panel mounting
- Internal Mounting Arrangements
- 48.26 cm (19 in.) rack mounting
- Hot Standby Redundant Controllers
- Auto failover
- Hot Standby Redundant Controllers
- Auto configuration file transfer
- Serial Servers
- Server 1: RS-232 only
- Serial Servers
- Server 2: RS-232, RS-422, RS-485
- Provided by the CR1000X Datalogger
- SDM-SI02R modules
- TCP/IP Communications
- FIPS-compliant switching
- TCP/IP Communications
- Embedded controllers
- TCP/IP Communications
- Technician interface
- TCP/IP Communications
- Future communications compatible
(LTE, satellite)
- Provided by the AeroX Audio 105
- ATIS
- Provided by the AeroX Audio 105
- Dial-up voice modem
- Provided by the AeroX Audio 105
- GTA radio
- Provided by the AeroX Audio 105
- ATC handset capability
- HDLC
- Allows ACU to output HDLC for ADAS
- Expansion Capability
- Sensor expansion modules
- Critical Component Field Replacement
- Power supplies
- Critical Component Field Replacement
- Data logger
- Critical Component Field Replacement
- Port servers
- Critical Component Field Replacement
- Embedded controllers
- Critical Component Field Replacement
- Radio
- Critical Component Field Replacement
- UPS
- Critical Component Field Replacement
- AeroX Audio 105
- Critical Component Field Replacement
- Ethernet switch
Electrical
- Power
- Monitored through CampbellAero AWOS software
- Power
- 110 Vac mains power
- Power
- Mains filtering
- Power
- Overvoltage protection for power distribution
- Power
- 48 Vdc battery array
- Power
- 24 Vdc 20 A AC/DC power supplies
- Power
- Redundancy for 24 Vdc power supply
- Expansion Power Supply Option
- 2,000 W UPS backup battery
- Expansion Power Supply Option
- Circuit breaker panel with power distribution terminal blocks
- Expansion Power Supply Option
- 12 Vdc power adapter
- Expansion Power Supply Option
- 5 Vdc power adapter
Electromagnetic Compatibility (EMC)
- Immunity
- IEC 61000-4-2 (ESD)
- Immunity
- RS103 (Radiated RF Immunity)
- Immunity
- IEC 61000-4-4 (EFT)
- Immunity
- IEC 61000-4-5 (Surge)
- Immunity
- IEC 61000-4-6 (Conducted RF Immunity)
- Immunity
- IEC 61000-4-11 (Power Quality)
- Radiated and Conducted Emissions
- 47 CFR Part 15