AC4490-200M-485 Laird Technologies, AC4490-200M-485 Datasheet - Page 24
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AC4490-200M-485
Manufacturer Part Number
AC4490-200M-485
Description
TXRX 900MHZ 3.3-5.5V TTL 200MW
Manufacturer
Laird Technologies
Series
AeroCommr
Specifications of AC4490-200M-485
Frequency
902MHz ~ 928MHz
Data Rate - Maximum
115.2kbps
Modulation Or Protocol
FHSS, FSK
Applications
AMR, Fire & Security Alarms, Telemetry
Power - Output
5mW ~ 200mW
Sensitivity
-110dBm
Voltage - Supply
3.3V, 5V
Current - Transmitting
68mA
Data Interface
Connector, 2 x 10 Header
Antenna Connector
MMCX
Operating Temperature
-40°C ~ 85°C
Package / Case
Module
Wireless Frequency
900 MHz
Interface Type
20-pin mini connector
Modulation
FHSS, FSK
Security
1 byte System ID, DES
Operating Voltage
3.3 V to 5.5 V
Output Power
200 mW
Antenna
Integral and External Dipole
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Memory Size
-
Current - Receiving
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
S
N E T W O R K I N G
System ID - System ID (EEPROM address 0x76) is similar to a password character or network number and makes
network eavesdropping more difficult. A transceiver will not go in range of or communicate with a transceiver
operating on a different System ID or Channel Number.
RF Channel Number - Channels 0x00 - 0x0F hop on 26 different frequencies. Channels 0x10 - 0x2F use 50 different
frequencies. Channels 0x30 – 0x37 are only available in Australian models and hop on 22 different frequencies.
Auto Channel - To allow for more flexible network configurations, Auto Channel can be enabled on Client transceivers
to allow them to automatically synchronize with the first Server they hear a beacon from, regardless of the Server’s
Channel Number or signal strength.
Note: A Client with Auto Channel enabled will only synchronize with a Server operating in the same Channel set and
with the same System ID.
DES (Data Encryption Standard) - DES (Data Encryption Standard) – Encryption is the process of encoding an
information bit stream to secure the data content. The DES algorithm is a common, simple and well-established
encryption routine. An encryption key of 56 bits is used to encrypt the packet. The receiver must use the exact same
key to decrypt the packet; otherwise garbled data will be produced.
To enable DES, EEPROM Byte 0x45, bit 6 must be set to a value of 1. To disable DES, set bit 6 to a value of 0. The 7
byte (56 bits) Encryption/Decryption Key is located in EEPROM Bytes 0xD0 – 0xD6. It is highly recommended that this
Key be changed from the default.
Sync to Channel - The AC4490 is a frequency hopping transceiver with a fixed hopping sequence.
synchronizing their frequency hopping, collocated systems on different channels can interfere with each other. To
avoid this, sync-to-channel can be used to synchronize the collocated Servers. A Server transceiver with sync-to-
channel enabled must have its Sync Channel set to another Server’s RF Channel number. It is required that a Server
with sync-to-channel enabled have its sync channel set to a value less than its RF Channel number. Collocated
networks using sync-to-channel must use the same channel set and must all have the same system ID.
OFTWARE
1. All Channels in a Channel Set use the same frequencies in a different order.
Channel Set
0 (AC4490 - 1x1
1 (AC4490 - 1x1
2 (AC4490 - 1x1
AC4490 - 1000)
AC4490 - 1000)
AC4490 - 200)
AC4490-200
AC4490 - 200
1
I
T a b l e 9 : R F C h a n n e l N u m b e r S e t t i n g s
RF Channel Number
NTERFACE
Range (0x40)
0x00 - 0x0F
0x10 - 0x2F
0x30 - 0x37
www.aerocomm.com
Regulatory requirements
902 - 915 MHz (26 hop bins)
902 - 928 MHz (50 hop bins)
915 - 928 MHz (22 hop bins)
Frequency Details &
Australia(-1x1/-200/-1000)
US / Canada
US / Canada
Countries
Without
5