AC4790LR-200M Laird Technologies, AC4790LR-200M Datasheet - Page 2

• Manufacturer Part Number: AC4790LR-200M
• Description: TXRX 900MHZ 3.3-5.5V FHSS 200MW
• Manufacturer: Laird Technologies
• Series: AeroCommr

Specifications of AC4790LR-200M

• Frequency: 902MHz ~ 928MHz
• Data Rate - Maximum: 115.2kbps
• Modulation Or Protocol: FHSS, FSK
• Applications: AMR, Fire & Security Alarms, Telemetry
• Power - Output: 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
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Memory Size: -
• Current - Receiving: -
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

AC4790 TRANSCEIVER MODULE 1
SPECIFICATIONS 3
THEORY OF OPERATION 8
SERIAL INTERFACE 14
HARDWARE INTERFACE 21
CONFIGURING THE AC4790 24
AC4790 features 1
Overview 1
Pin Definitions 5
Electrical Specifications 7
Masterless Architecture 8
Modes of Operation 8
API CONTROL 11
Serial Communications 14
OEM Host Data Rate 15
Serial Interface Baud Rate 15
Interface Timeout / RF Packet Size 16
Flow Control 17
Half Duplex / Full Duplex 17
System Timing & Latency 17
System Throughput 18
Random Backoff 18
Networking 19
Max Power 20
Pin Definitions 21
AT Commands 24
Command Descriptions 27
Transmit Mode 8
Receive Mode 9
Command Mode 10
API Transmit Packet 12
API Send Data Complete 12
API Receive Packet 12
Asynchronous Operation 14
Parity 14
Generic I/O 21
TXD & RXD 21
CTS 21
RTS 21
Test / 9600 Baud 22
RSSI 22
UP_Reset 23
Command/Data 23
AD In 23
Session Status 23
On-the-Fly Control Commands 25
Contents
EEPROM PARAMETERS 32
DIMENSIONS 36
ORDERING INFORMATION 40
COMPLIANCY INFORMATION 41
APPENDIX I - SAMPLE POWER SUPPLY 44
APPENDIX II - 5V TO 3.3V LEVELS 47
APPENDIX III - API 48
APPENDIX IV - API TIMING DIAGRAMS 54
Mechanical Drawings 36
Product Part Number Tree 40
Developer Kit Part Numbers 40
AC4790-1x1 41
Agency Identification Numbers 41
Approved Antenna List 41
FCC / IC Requirements for Modular Approval 42
OEM Equipment Labeling Requirements 42
Antenna Requirements 43
Warnings required in OEM Manuals 43
Channel Warning 43
Bill of Materials 44
Schematic 45
PCB Layout 45
Voltage Level Conversion IC’s 47
Passive Resistor Voltage Divider 47
Polling Network 48
Daisy Chain / Repeater Network 51
Loopback Repeater 52
Time Division Multiple Access Network 53
Timing Diagrams 54
Addressed Transmit API 49
Broadcast Transmit API 49
Receive API 50
Normal Receive Mode (non-API) 51