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AC4790 Datenblatt(PDF) 2 Page - Laird Tech Smart Technology

Teilenummer AC4790
Bauteilbeschribung  Software-adjustable sensitivity
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Hersteller  LSTD [Laird Tech Smart Technology]
Direct Link  http://www.lairdtech.com/
Logo LSTD - Laird Tech Smart Technology

AC4790 Datenblatt(HTML) 2 Page - Laird Tech Smart Technology

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Innovative Technology
for a Connected World
AC4790
900MHz Radio Module
FLEXIBLE RF PROTOCOL
Laird Technologies’ RF232™ embedded transparent protocol simplifies the OEM’s integration process by providing drop-in installation.
As each radio module receives raw data, it manages the over-the-air protocol to assure successful communication. Headers, data packet
length, and CRCs are not required. The AC4790’s flexible “masterless” topology supports simple cable-replacement up to complex
peer-to-peer configuration. It allows you to broadcast to all radio modules or address packets to a specific destination using unique MAC
addresses embedded in each radio module.
LWS-SPEC-AC4790 0209
Any information furnished by Laird Technologies and its agents is believed to be accurate and reliable. Responsibility for the use and application of Laird Technologies materials
rests with the end user since Laird Technologies and its agents cannot be aware of all potential uses. Laird Technologies makes no warranties as to the fitness, merchant-
ability, or suitability of any Laird Technologies materials or products for any specific or general uses. Laird Technologies shall not be liable for incidental or consequential
damages of any kind. All Laird Technologies products are sold pursuant to the Laird Technologies terms and conditions of sale in effect from time to time, a copy of which will
be furnished upon request. For further information please visit our website at www.lairdtech.com. Alternatively contact: wirelessinfo@lairdtech.com. Bluetooth® is a trademark
owned by Bluetooth SIG, Inc., USA and licensed to Laird Technologies.
© 2009 All Rights Reserved. Laird Technologies is a registered trademark of Laird Technologies, Inc.
SPECIFICATIONS
Parameter
AC4790–200
AC4790–1000
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
3.3V or 5V TTL
3.3V 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
Current consumption (Tx/Rx)
68 mA / 30 mA typical
650 mA typical / 30mA typical
Channels
Up to 48 (U.S.)**
Up to 32 (U.S.)**
Security
One-byte system ID, DES
One-byte system ID, DES
Voltage
3.3V-5.5V
pin 10: 3.3V-5.5V;
pin 11: 3.3V +/-3%
Sensitivity (adjustable)
-99 dB, -110dB
-99 dB, -110 dB
Range (line-of-sight)
Up to 4 miles
Up to 20 miles
(up to 6.5 km)
(up tp 32 km)
with external antenna
with high-gain antenna
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”
1.90 x 1.65 x 0.20”
(49 x 42 x 5 mm)
(49 x 42 x 5 mm)
Weight
< 0.75 oz (< 21 g)
< 0.75 oz (< 21 g)
Antenna
Integral or external antenna††
External antenna††
*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, please contact Laird Technologies directly.
Current consumption assumes 50% transmitter on-time.
††
Higher-gain antennas optional.
RF PROTOCOL MODES
a) Communication
Unicast (one-to-one addressing)
Broadcast (one-to-multiple addressing)
b) Acknowledgement mode (ACK)
API with hardware and/or software
ACK indication
c) Ultra-fast sync time:
Up to 25 simultaneous conversations
Intelligent self-extending session
time requires only one 25 msec sync
d) Sense adjust software-controlled RF
desensitizer wards off interference
e) Random back-off
f) Network node discovery
g) Dynamic radio data table:
Retains data from up to
8 radio modules
INTERFACE PROTOCOL
a) On-the-fly radio module configuration:
Full API control
Destination address
RF transmit power
RF channel
Broadcast/addressed
b) Raw data or transmit/receive API
c) Long range mode, enables sensitivity
control
d) A/D, generic digital I/Os
e) Variable baud rate
f) RF packet size, timeout control
g) Onboard temperature sensor
h) Handshaking, CTS/RTS
i) Session indicator
j) Error detection
Onboard CRC
Duplicate packet filtering
k) Data encryption standard (DES)
The details contained within the document are
subject to change. Download the product specification
from www.lairdtech.com/wireless for the most current
specification.


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