AC4490-200M Laird Technologies, AC4490-200M Datasheet - Page 24

• Manufacturer Part Number: AC4490-200M
• Description: TXRX 900MHZ 3.3-5.5V TTL 200MW
• Manufacturer: Laird Technologies
• Series: AeroCommr

Specifications of AC4490-200M

• 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
• 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
• Other names: AC4490-200M-01

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