Related Manuals for AeroComm AC4490
Summary of Contents for AeroComm AC4490
- Page 1 AC4490 900 MHz OEM TRANSCEIVERS Specifications Subject to Change User’s Manual Version 2.3 11160 THOMPSON AVENUE LENEXA, KS 66219 (800) 492-2320 www.aerocomm.com wireless@aerocomm.com...
- Page 2 Limited Warranty, Disclaimer, Limitation of Liability For a period of one (1) year from the date of purchase by the OEM customer, AeroComm warrants the OEM transceiver against defects in materials and workmanship. AeroComm will not honor this warranty (and this warranty will be automatically void) if there has been any (1) tampering, signs of tampering;...
- Page 3 Eliminated Commercial designation: All transceivers are now industrial qualified. Version 1.7 7/09/04 – Changed Range Refresh so that 0h is an invalid setting. Updated AC4490 500mW output power (conducted and EIRP). Added warranty information. Changed AC4490-500 part number to AC4490-1000. Removed support of One Beacon Mode.
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Page 4: Table Of Contents
TABLE OF CONTENTS OVERVIEW..........................7 AC4490 SPECIFICATIONS ....................8 SPECIFICATIONS.........................9 ......................9 NTERFACE IGNAL EFINITIONS ......................10 LECTRICAL PECIFICATIONS ......................11 YSTEM IMING AND LATENCY 3.3.1 Serial Interface Data Rate ......................11 3.3.2 Latency ............................11 3.3.3 Timing Diagrams........................13 3.3.4 Maximum Overall System Throughput ..................14 CONFIGURING THE AC4490.....................15 EEPROM P ........................15... - Page 5 Figure 1 – RSSI Voltage vs. Received Signal Strength ..............35 Figure 2 - AC4490 (with MMCX Connector) Mechanical .............. 47 Figure 3 - AC4490 (with Integral GigaAnt Antenna on Top) Mechanical ........48 Figure 4 - AC4490 (with Integral GigaAnt Antenna on Bottom) Mechanical......... 49...
- Page 6 Table 11 – Auto Config Parameters ....................41 Table 12 – One Beacon Mode Settings ..................41 Table 13 – Current versus Output Power for AC4490-1x1 Transmitter ..........42 Table 14 – Current versus Output Power for AC4490-200 Transmitter ........42 Table 15 –...
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Page 7: Overview
All modules are qualified for Industrial temperatures (-40°C to 80°C) 1. Overview The AC4490 is a member of AeroComm’s ConnexRF OEM transceiver family. The AC4490 is designed for integration into OEM systems operating under FCC part 15.247 regulations for the 900 MHz ISM band. -
Page 8: Ac4490 Specifications
AC4490 Specifications 2. AC4490 Specifications GENERAL Samtec TMM-110-01-L-D-SM, mates with Samtec SMM-110-02-S-D 20 Pin Interface Connector RF Connector MMCX receptacle, mates with any manufacturer’s MMCX style plug Antenna AC4490-1x1: Customer must provide AC4490-200: MMCX Connector or integral antenna AC4490-1000: MMCX Connector... -
Page 9: Specifications
RSSI valid while in Receive Mode. Input Generic Input pin RESET – Controlled by the AC4490 for power-on reset if left unconnected. After a Stable power-on reset, a logic Input UP_RESET High pulse will reset the transceiver. When logic Low, the transceiver interprets Host data as command data. When logic High, the transceiver interprets... -
Page 10: Electrical Specifications
AC4490 Specifications 8,24-28 No Connect These pins have an internal connection and should be left floating. 3.2 E LECTRICAL PECIFICATIONS Table 2 - Input Voltage Characteristics (AC4490-1000 and AC4490-1x1) -1000 -1x1 Type Name High High Unit Min. Max. Min. Max. -
Page 11: Ystem Iming And Latency
AC4490 Specifications Table 4 – Output Voltage Characteristics (All) Module Type Name High Min. Low Max. Unit 2.5 @ 8mA 0.4 @ 8mA 2.5 @ 2mA 0.4 @ 2mA RS485A/B 3.3 @ 1/8 Unit Load Hop Frame 2.5 @ 2mA 0.4 @ 2mA... - Page 12 AC4490 Specifications transceiver must wait for its appropriate hop (even numbered hops for the Server and odd numbered hops for the Client). Upon doing this, the transceiver will calculate the amount of time until the next hop to ensure that it has time to send the packet. If there is enough time, it will send the packet: if not, it will wait until its next appropriate hop.
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Page 13: Timing Diagrams
AC4490 Specifications 3.3.3 Timing Diagrams Addressed Acknowledge Mode with Interface Timeout: Local_RXD Packet Data Wait for Hop Local_RF_TXD RF Packet Remote_RF_TXD RF Acknow ledge Remote_TXD Received Data Interface Timeout Hop Period Hop Time Hop_Frame Addressed Acknowledge Mode with Fixed Packet Length:... -
Page 14: Maximum Overall System Throughput
Hop Period 3.3.4 Maximum Overall System Throughput When configured as shown in the table below, an AC4490 transceiver is capable of achieving the listed throughput. However, in the presence of interference or at longer ranges, the transceiver might not be able to meet these specified throughputs. -
Page 15: Configuring The Ac4490
00h = (256 * 1.6us) + 12us Delay 0 – FFh 1 – FEh = (value * 1.6us) + 12us Set 0 = 00 – 0Fh (US/Canada): AC4490-1x1/200 Set 1 = 10 – 2Fh (US/Canada): AC4490- AC4490-1x1: 00h 1x1/200/1000 Channel AC4490-200: 00h Set 2 = 30 –... - Page 16 Bit 5 – Sync to Channel 0 = Don't Sync to Channel 1 = Sync to Channel Bit 4 – AeroComm Use Only Bit 3 – AeroComm Use Only Bit 2 – AeroComm Use Only Bit 1 – RF Delivery...
- Page 17 Bit 7 – Enhanced API Control Enable 0 = Enable Enhanced API Control 1 = Disable Enhanced API Control Bit 6 – AeroComm Use Only Bit 5 – AeroComm Use Only Bit 4 – AeroComm Use Only Bit 3 – AeroComm Use Only Bit 2 –...
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Page 18: Configuration Flow Of The Ac4490
AC4490 Specifications 4.2 C AC4490 ONFIGURATION FLOW OF THE Use AT Commands Send Enter AT Take Pin 17 Command Mode Command Send CC Send Exit Commands? Configuration Command Commands? Mode? Send CC In AT In AT Command Command Command Mode? -
Page 19: Command
AC4490 Specifications 4.3 C OMMAND UICK EFERENCE Below is a command reference and further information on each individual command can be found in the text following. It is strongly recommended that all the information be read on each command prior to using as some commands have caveats. - Page 20 AC4490 Specifications Command Name Command (All Bytes in Hex) Return (All Bytes in Hex) 00h: AD In MSB of 10 bit LSB of 10 bit Read ADC 01h: Temp 02h: RSSI Report Last Valid RSSI RSSI Bit 0 : GO0...
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Page 21: Eeprom Configuration Commands
AC4490 Specifications 4.4 EEPROM C ONFIGURATION OMMANDS The configuration commands allow the Host to modify the operation of the transceiver. If the transceiver is in Command mode (Command/Data pin (Pin 17) is pulled logic Low or the Enter AT Command mode and AT Enter Configuration mode commands have been sent to the transceiver), the transceiver will interpret incoming Host data as Command Data. -
Page 22: Eeprom Exit Configuration Mode Command
4.5 AC4490 AT C OMMANDS The AT Command mode implemented in AC4490 firmware version 3.2 and higher creates a virtual version of the Command/Data line. The Enter AT Command mode command asserts this virtual line Low (to signify Command mode) and the Exit AT Command mode command asserts this virtual line High (to signify Data mode). -
Page 23: At Enter Configuration Mode
OMMANDS OMMAND The AC4490 transceiver contains static memory that holds many of the parameters that control the transceiver operation. Using the “CC” command set allows many of these parameters to be changed during system operation. Because the memory these commands affect is static, when the transceiver is reset, these parameters will revert back to the settings stored in the EEPROM. -
Page 24: Status Request
AC4490 Specifications 4.6.1 Status Request The Host issues this command to request the status of the transceiver. Host Command: Byte 1 = CCh Byte 2 = 00h Byte 3 = 00h Transceiver Response: Byte 1 = CCh Byte 2 = Firmware version number... -
Page 25: Sync To Channel Command
AC4490 Specifications Range Refresh timer expires; therefore it is recommended that the host uses the commands which force acquisition sync. Host Command: Byte 1 = CCh Byte 2 = 03h Byte 3 = Data1 Where: Data1 = 00h: Server 03h: Client... -
Page 26: Sleep Walk Power-Down Wake-Up Command
AC4490 Specifications Transceiver Response: Byte 1 = CCh Byte 2 = RF Channel Number 4.6.7 Sleep Walk Power-Down Wake-Up Command The Power-Down Wake-Up Command is issued by the Host to bring the transceiver out of power-down mode. Host Command: Byte 1 = CCh... -
Page 27: Auto Channel / Auto Destination
AC4490 Specifications Host Command: Byte 1 = CCh Byte 2 = 11h Transceiver Response: Byte 1 = CCh Bytes 2 – 4= 00 – FFh corresponding the three LSB’s of the destination MAC Address 4.6.11 Auto Channel / Auto Destination The Host issues this command to change the settings for Auto Channel and Auto Destination. -
Page 28: Read Adc
AC4490 Specifications 4.6.13 Read ADC The Host issues this command to read any of the three 10 bit onboard A/D converters. Because the RF is still active in on-the-fly mode, the transceiver will not process the command until there is no activity on the network. -
Page 29: Write Digital Outputs
AC4490 Specifications Signal Strength Approximate (dBm) RSSI Value (hex) -2 to 1 -12 to -6 -36 to -22 -42 to -39 Note: Notice the trend between 4dBm and -12dBm does not follow the curve. This is because RSSI becomes saturated at signal levels above -40dBm. -
Page 30: Set Max Power
AC4490 Specifications between High and Low. This signal is filtered via an onboard R-C circuit and an analog voltage is generated. Duty Cycle specifies the ratio of time in one cycle that the pulse spends High proportionate to the amount of time it spends Low. So, with a duty cycle of 50% (80h), the pulse is High 50% of the time and Low 50% of the time;... -
Page 31: Disable Sync To Channel
AC4490 Specifications Transceiver Response: Byte 1 = CCh Byte 2 = 00h 4.6.19 Disable Sync to Channel The Host issues this command to disable Sync to Channel mode. Host Command: Byte 1 = CCh Byte 2 = 85h Transceiver Response:... -
Page 32: Eeprom Byte Write
AC4490 Specifications Host Command: Byte 1 = CCh Byte 2 = C0h Byte 3 = Address Byte 4 = Length (01…FFh = 1…255 bytes; 00h = 256 bytes) Transceiver Response: Byte 1 = CCh Byte 2 = Address Byte 3 = Length Byte 4…n = Data at requested address(s) -
Page 33: Theory Of Operation
5.1 H ARDWARE INTERFACE Below is a description of all hardware pins used to control the AC4490. 5.1.1 GIn (Generic Inputs 0 and 1) (pins 4 and 14 respectively) and GOn (Generic Outputs 0 and 1) (pins 1 and 9 respectively) Both GIn pins serve as generic input pins. -
Page 34: Cts Handshaking (Pin 7)
5.1.4 CTS Handshaking (pin 7) The AC4490 has an interface buffer size of 256 bytes. If the buffer fills up and more bytes are sent to the transceiver before the buffer can be emptied, data loss will occur. The transceiver prevents this loss by asserting CTS High as the buffer fills up and taking CTS Low as the buffer is emptied. -
Page 35: Up_Reset (Pin 15)
Signal at Receiver (dBm) 5.1.8 UP_Reset (pin 15) UP_Reset provides a direct connection to the reset pin on the AC4490 microprocessor and is used to force a soft reset. For a valid reset, reset must be High for a minimum of 10ms. -
Page 36: Ad In And Da Out (Pins 18 And 19 Respectively)
Channel Number in the same coverage area as the interference between the two Servers will severely hinder RF communications. The AC4490 runs a Peer-to-Peer type architecture where all transceivers, whether Servers or Clients, can communicate with all other transceivers. To prohibit transceivers from receiving broadcast packets, Unicast Only can be enabled. -
Page 37: Sub Hop Adjust
5.2.4 Duplex Mode In Half Duplex mode, the AC4490 will send a packet out over the RF when it can. This can cause packets sent at the same time by a Server and a Client to collide with each other over the RF. To prevent this, Full Duplex Mode can be enabled. -
Page 38: Serial Interface Baud Rate
5.2.7 Network Topology RF Channel Number – RF Channel Number provides a physical separation between collocated networks. The AC4490 is a spread spectrum frequency hopping transceiver with a fixed hopping sequence. Without synchronizing their frequency hopping, collocated systems on different channel numbers can interfere with each other. - Page 39 AC4490 Specifications establishing communications. Server B will not be affected and hence can communicate with its Clients. See the Diagrams below for examples: Frequency Hop Synchronization Using the Daisy-Chain Network Arrangement Frequency Hop Synchronization Using the Centralized Network Arrangement 12/20/05...
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Page 40: Auto Config
Channel Set and having a matching System ID. 5.2.8 Auto Config The AC4490 has several variables that control its RF performance and vary by RF Mode and RF Architecture. Enabling Auto Config will bypass the value for these variables stored in EEPROM and use predetermined values for the given mode. -
Page 41: One Beacon Mode
AC4490 Specifications Table 11 – Auto Config Parameters Parameter (those not EEPROM Default Acknowledge Mode named are Address undocumented One Beacon One Beacon protocol parameters) Mode Disabled Mode Enabled Sub Hop Adjust RF Packet Size CTS On CTS On Hysteresis 5.2.9 One Beacon Mode... -
Page 42: Max Power
AC4490 Specifications 5.2.10 Max Power Max Power provides a means for controlling the RF transmit output power of the AC4490. Output power and current consumption can vary by as much as ±10% per transceiver for a particular Max Power setting. Contact Aerocomm for assistance in adjusting Max Power. The following graphs show current consumption versus output power. -
Page 43: Table 15 - Current Versus Output Power For Ac4490-1000 Transmitter
AC4490 Specifications Table 15 – Current versus Output Power for AC4490-1000 Transmitter 1000 1080 1130 1170 1260 1300 Transmit Current Consumption (mA) 12/20/05... -
Page 44: Interface Options
EEPROM, will be ignored when 9600 baud is forced. Both modem interfaces are shown below. Table 16 – Transceiver Interface to DCE (Server Transceiver) When Interfacing the AC4490 to a DCE (Data Communications Equipment): Direction with DCE Pin... -
Page 45: Protocol Status And Received Acknowledgment
AC4490 Specifications 5.2.12 Protocol Status and Received Acknowledgment Implemented in v6.3 of the firmware and later. When enabled in EEPROM, GO0 and GO1 will perform the functions of Protocol Status and Received Acknowledgment. Protocol Status – Every time the radio hops to hop bin 0, the radio will assert GO0 (pin 1) Low for the entire hop bin. -
Page 46: Transmit Api Packet
Data (1-80h) Attempts *For Aerocomm Use only, may be set to any value. 1) If the OEM Host does not encode the header correctly, the transceiver will send the entire string (up to 80h bytes) as a data packet. 2) Although the 7 bytes of overhead are not sent over the RF, they are kept in the buffer until the packet is sent. -
Page 47: Dimensions
Interface Connector – 20 pin OEM interface connector (Samtec TMM-110-01-L-D-SM, mates with Samtec SMM-110-02-S-D) MMCX Jack – Antenna connector (Telegärtner P/N J01341C0081) mates with any manufacturer’s MMCX plug Figure 2 - AC4490 (with MMCX Connector) Mechanical 20 pin header, 0.020 sq. posts on 0.079 inch (2mm) centers 0.157 0.180... -
Page 48: Figure 3 - Ac4490 (With Integral Gigaant Antenna On Top) Mechanical
AC4490 Specifications Figure 3 - AC4490 (with Integral GigaAnt Antenna on Top) Mechanical 12/20/05... -
Page 49: Figure 4 - Ac4490 (With Integral Gigaant Antenna On Bottom) Mechanical
AC4490 Specifications Figure 4 - AC4490 (with Integral GigaAnt Antenna on Bottom) Mechanical 12/20/05... -
Page 50: Figure 5 - Ac4490-1X1 Mechanical
AC4490 Specifications Figure 5 - AC4490-1x1 Mechanical Module Outline 0.131 RESET RF_PORT 0.031 9600_BAUD 0.000 GND (note 2) (TST_MODE) RSSI VCC (note 1) cut corner indicates pin 1 1.000 AC4490-1X1 RECOMMENDED PAD PATTERN (viewed from top) 0.200 005068004503 1.080 0.080 x 0.040 pad 1.000... -
Page 51: Figure 6 - Ac4490-1X1 Pcb Considerations
AC4490 Specifications Figure 6 - AC4490-1x1 PCB Considerations Note: Keep distance between 1x1 Module and antenna connector as short as possible for better performance. Use several large vias (0.030" hole) to tie top side ground to the bottom layer ground plane. -
Page 52: Ordering Information
UMBERS All the above part numbers can be ordered as a development kit by prefacing the part number with “SDK-“. As an example, part number AC4490-200A can be ordered as a development kit using the following part number: SDK-AC4490-200A. All Developer Kits include (2) transceivers, (2) Serial Adapter Boards, (2) 6VDC unregulated power supplies, (2) Serial cables, (2) USB cables, (2) S467FL-6-RMM-915S dipole antennas with 6”... -
Page 53: Agency Compliancy Information
8.1 AC4490-1 Due to the RF antenna trace residing on the OEM Host PCB, the FCC will not grant modular approval for the AC4490-1x1 and requires the OEM to submit their completed design for approval. Contact AeroComm for the approval procedure. -
Page 54: Approved Antenna List
PPROVED NTENNA The following antennas are approved for operation with the AC4490 as identified. The FCC permits the OEM to choose another vendor’s antenna of equal or lesser gain and similar type as an antenna appearing in the table and still maintain compliance. -
Page 55: Fcc / Industry Canada (Ic) Requirements For Modular Approval
2.5cm (NOTE: Ankles, feet, wrists and hands are permitted to be within 2.5cm of the antenna even if the equipment is designated as being greater than 2.5cm). The AC4490 is not agency approved for portable applications. The OEM is required to have additional testing performed to receive this classification. -
Page 56: Warnings Required In Oem Manuals
Agency Compliancy Information 8.3.3 Warnings Required in OEM Manuals RF Exposure for Warning for Mobile Equipment WARNING: This equipment has been approved for mobile applications where the equipment should be used at distances greater than 20cm from the human body (with the exception of hands, wrists, feet and ankles). Operation at distances less than 20cm is strictly prohibited. -
Page 57: Appendix I - Power Supply Application Note
9.1 O VERVIEW Here is a simple switching power supply that provides enough current to easily power any Aerocomm OEM module. It utilizes low cost, off the shelf components that fit into a small area. This supply has an input voltage range of +6 volts to +18 volts and will output +3.4 volts at 1.5 amps. - Page 58 Appendix I 12/20/05...
- Page 59 Appendix I 12/20/05...
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