AC4790-200A-485 Laird Technologies, AC4790-200A-485 Datasheet - Page 37

• 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

Control 1
Interface Timeout
RF Packet Size
CTS On
CTS Off
Max Power
Parity
Destination ID
System ID
RS-485 DE
MAC ID
Original Max
Power
Parameter
0x56
0x58
0x5B
0x5C
0x5D
0x63
0x6F
0x70
0x76
0x7F
0x80
0x8E
EEPROM
Address
T a b l e 1 2 : E E P R O M P a r a m e t e r s
1
1
1
1
1
1
1
6
1
1
6
1
(Bytes)
Length
www.lairdtech.com\wireless
0x02
0xFF
0x01
0x80
0x01
0xFF
0x00
0xFE
0x00
0x60
0xE3,
0xFF
0x00
0xFF
0x00
0xFF
0xE3,
0xFF
0x00
0xFF
Range
-
-
-
-
-
-
-
-
0x43
0x04
0x80
0xD2
0xAC
Set
Production
& can vary
0xFF
0x01
0xFF
Set
Production
and can vary
Default
in
in
Description
Settings are:
bit-7: Laird Technology Use Only
bit-6: Laird Technology Use Only
bit-5: Laird Technology Use Only
bit-4: Auto Destination
bit-3: Laird Technology Use Only
bit-2: RTS Enable
bit-1: Duplex
bit-0: Auto Config
Specifies a byte gap timeout, used in conjunction with RF
Packet Size to determine when a packet coming over the
interface is complete (0.5 ms per increment).
Used in conjunction with Interface Timeout; specifies the
maximum size of an RF packet.
CTS will be deasserted (High) when the transmit buffer
contains at least this many characters.
Once CTS has been deasserted, CTS will be reasserted
(Low) when the transmit buffer is contains this many or less
characters.
Used to increase/decrease the output power. The
transceivers are shipped at maximum allowable power.
0xE3 = Enable Parity
0xFF = Disable Parity
Note: Enabling parity cuts throughput and the interface
buffer size in half.
Specifies destination for RF packets
Similar to network password. Radios must have the same
system ID to communicate with each other.
0xE3 = GO0 is active Low DE for control of external RS-485
hardware
0xFF = Disable RS-485 DE
Factory programmed unique IEEE MAC address.
Copy of original max power EEPROM setting. This address
may be referenced but should not be modified.
0 = Use destination address
1 = Use auto destination
0 = Ignore RTS
1 = Transceiver obeys RTS
0 = Use EEPROM values
1 = Auto Configure values
0 = Half Duplex
1 = Full Duplex
E E P R O M P A R A M E T E R S
3 3