AC4790-200A-485 Laird Technologies, AC4790-200A-485 Datasheet - Page 28

• Manufacturer Part Number: AC4790-200A-485
• Description: TXRX 900MHZ 3.3-5.5V FHSS 200MW
• Manufacturer: Laird Technologies
• Series: AeroCommr

Specifications of AC4790-200A-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: On-Board, Chip
• Operating Temperature: -40°C ~ 85°C
• Package / Case: Module
• Wireless Frequency: 900 MHz
• Interface Type: 20-pin mini connector
• Board Size: 49 mm x 42 mm x 5 mm
• 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

C
The AC4790 can be configured using the CC Configuration Commands. The CC Commands can be issued using
either Hardware or Software Configuration. To use Hardware Configuration, pin 17 of a transceiver must be asserted
Low. Software Configuration can be used by entering AT Command Mode before issuing the CC Commands.
A T C O M M A N D S
The AT Command mode implemented in the AC4790 creates a virtual version of the Command/Data pin. The “Enter
AT Command Mode” Command asserts this virtual pin Low (to signify Command Mode) and the “Exit AT Command
Mode” Command asserts this virtual pin High (to signify Data). Once this pin has been asserted Low, all On-the-Fly
CC Commands documented in the manual are supported.
ONFIGURING THE
F i g u r e 5 : A C 4 7 9 0 C o n f i g u r a t i o n F l o w
Configuration)
(Software
AT+++
Yes
Receive Mode
CC Command
Send Another
Yes
Commands
Commands
Command
Send CC
Send CC
Use AT
www.lairdtech.com\wireless
AC4790
Yes
Take Pin 17 Low
Configuration)
(Hardware
Command Mode
Exit Command
Send Exit AT
Command
Command
Mode
In AT
Mode
Yes
Receive Mode
Take Pin 17 High
6