SCAA

Stand-Alone ASOS/AWOS
SCAA

SCAA

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Stand-Alone ASOS/AWOS

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Model:
SCAA
Item Number:
SCAA

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

Perfect for Aviation Applications
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
Drop-in replacement cabinet for legacy SCAs
Internal Mounting Arrangements
DIN rail mounting for system components
Keyed hole panel mounting
48.26 cm (19 in.) rack mounting
Hot Standby Redundant Controllers
Auto failover
Auto configuration file transfer
Serial Servers
Server 1: RS-232 only
Server 2: RS-232, RS-422, RS-485
Provided by the CR1000X Datalogger
SDM-SI02R modules
TCP/IP Communications
FIPS-compliant switching
Embedded controllers
Technician interface
Future communications compatible

(LTE, satellite)

Provided by the AeroX Audio 105
ATIS
Dial-up voice modem
GTA radio
ATC handset capability
HDLC
Allows ACU to output HDLC for ADAS
Expansion Capability
Sensor expansion modules
Critical Component Field Replacement
Power supplies
Data logger
Port servers
Embedded controllers
Radio
UPS
AeroX Audio 105
Ethernet switch

Electrical

Power
Monitored through CampbellAero AWOS software
110 Vac mains power
Mains filtering
Overvoltage protection for power distribution
48 Vdc battery array
24 Vdc 20 A AC/DC power supplies
Redundancy for 24 Vdc power supply
Expansion Power Supply Option
2,000 W UPS backup battery
Circuit breaker panel with power distribution terminal blocks
12 Vdc power adapter
5 Vdc power adapter

Electromagnetic Compatibility (EMC)

Immunity
IEC 61000-4-2 (ESD)
RS103 (Radiated RF Immunity)
IEC 61000-4-4 (EFT)
IEC 61000-4-5 (Surge)
IEC 61000-4-6 (Conducted RF Immunity)
IEC 61000-4-11 (Power Quality)
Radiated and Conducted Emissions
47 CFR Part 15

Related Resources

Documents