ETC AC4490

Compact AC4490 900MHz transceivers can replace miles of cable in harsh
industrial environments. Using field-proven FHSS technology that needs no
additional site licensing*, AC4490s reject interference, enable co-located system operation, increase output power and maintain data integrity.
AC4490s feature drop-in installation and a number of on-the-fly control commands, providing OEMs with a versatile interface for any application. They
can be used as direct wire replacements, requiring no special host software
for communication. All frequency hopping, synchronization and RF system
data transmission/reception is performed by the transceiver.
• Lowest cost one-watt module available.
AC4490 modules are socket-compatible with AeroComm’s 2.4GHz AC4424
• “Long range” mode enables 40 miles.
transceivers, enabling OEMs to design once and subsequently interchange
• High 900MHz data rate: 115.2 Kbps.
radios to accommodate new markets, regulations and environments.
• Small form factor: 1.65 x 1.9 inches.
Developer tools and integration support back every transceiver line. Let
• Operates in –40ºC to +80ºC temperatures.
AeroComm help you find the best fit for your application.
• Variable output power: 5mW to 1000mW.
Recreation Areas
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Golf cart tracking
Score keeping
Order entry
Irrigation systems
Grounds maintenance
Utilities Management
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Automatic meter reading
Load profiling, forecasting
Data management
Tampering alerts
Real-time support
PARAMETER
AC4490–200
AC4490–1000
Interface
20-pin mini connector
20-pin mini connector
Frequency (software selectable)
902-928 MHz (U.S)**
902-928 MHz (U.S)**
Modulation
FHSS FSK
FHSS FSK
Serial interface options
3V or 5V TTL
3V TTL
Serial interface data rate
Up to 115.2 Kbps
Up to 115.2 Kbps
Output power (w/ 3dBi antenna)
5mW-200mW variable
5mW-1000mW variable
Power consumption††
68 mA typical
650 mA typical
Channels
Up to 48 (U.S.)**
Up to 32 (U.S.)**
Commercial Buildings
Security
One-byte system ID, DES
One-byte system ID, DES
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Voltage
3.3V-5.5V
pin 10: 3.3V-5.5V
pin 11: 3.3V +/-3%
Sensitivity
-110 dB in “long range” mode
-110 dB in “long range” mode
Range
Up to 4 miles (6.5 km)
Up to 20 miles (32 km)
Temperature
-40o to +80ºC
-40o to +80ºC
Humidity (non-condensing)
10% to 90%
10% to 90%
Dimensions
1.90 x 1.65 x 0.20 inches
(49 x 42 x 5 mm)
1.90 x 1.65 x 0.20 inches
(49 x 42 x 5 mm)
Weight
< 0.75 oz (< 21 g)
< 0.75 oz (< 21 g)
Antenna
Integral and external dipole
External dipole
Security & fire alarms
Lighting controls
Surveillance
Building automation
HVAC controls
Fleet Telemetry
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Vehicle tracking
Cargo data
Weigh scales
Maintenance logs
Mapping
Field Surveillance
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SCADA
Oil & gas
Water & wastewater
Tank monitoring
Activity alarms
* The 900MHz frequency band is approved in the Americas and Australia as an unlicensed spectrum subject to approval by device.
** For products and specifications suited to non-U.S. countries (e.g. Australia and Europe), please contact AeroComm directly.
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Although AC4490 radios will not talk to AC4424 radios, socket-compatibility allows for interchanging the modules network-wide.
††
Power consumption assumes 50% transmitter on-time.
Flexible RF Protocol
AeroComm’s embedded transparent protocol simplifies the
OEM’s integration process by allowing for drop-in installation.
AC4490, Actual Size
As each transceiver receives raw data, it manages over-theair protocol to assure successful communication. Headers,
data packet length, and CRCs are not needed.
RF232 supports simple cable-replacement to complex peerto-peer configurations. Broadcast communication to all transceivers or address packets to a specific destination using
unique MAC addresses embedded in each transceiver.
Protocol Features
RF Architectures
Select features from the list below to identify the
appropriate part number. More product lines are
available for industrial & commercial applications.
Contact AeroComm Sales for details: toll-free
1-800-492-2320, email [email protected]
R F PROTOCOL MODES
a) Communication
Unicast (one-to-one addressing)
Broadcast (one-to-many addressing)
b) Acknowledgement mode (ACK)
API with hardware and/or software ACK indication
Placing Orders
Point-to-point
c) One-beacon mode
PART NUMBERS
d) Dynamic radio data table
Retains data from up to 12 transceivers
AC4490-200M
900MHz transceiver, 3.3V-5.5V, TTL serial*,
5–200mW, –40º to +80º C, MMCX antenna
INTERFACE PROTOCOL
AC4490-200A
900MHz transceiver, 3.3V-5.5V, TTL serial*,
5–200mW, –40º to +80º C, integral antenna
Point-to-multipoint
AC4490-1000M
900MHz transceiver, 3.3V, TTL serial*,
5–1000mW, –40º to +80º C, MMCX antenna
a) On-the-fly transceiver configuration
Destination address
RF transmit power
Co-located servers
RF Channel
Broadcast/addressed
b) Raw data or transmit/receive API
AC4490-1x1
See AC4490-1x1 datasheet
Multipoint-to-multipoint
* RS485 interface available.
c) 9-bit serial interface mode
d) Long range mode
Enables sensitivity control
e) Generic A/D, D/A generic I/Os
f) Variable baud rate
g) RF packet size, timeout control
h) Onboard temperature sensor
i) Handshaking
CTS/RTS
Full modem-mode available
j) In-range indicator
k) Error detection
Onboard CRC
Duplicate packet filtering
l) Data encryption standard (DES)
Peer-to-peer