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Reference
Cooper Bussmann
E2-950 Radio Module
Instruction Manual
Version 1.1
Elpro Technologies E2-450 Radio Transceiver Module Instruction Manual
ATTENTION!
Incorrect termination of the supply wires may cause internal damage. Before turning the power on double-check ALL connections by referring to this User Manual.
CAUTION
To comply with FCC RF Exposure requirements in section 1.1310 of the FCC Rules, antennas used with this device must be installed to provide a separation distance of at least 90 cm from all persons to satisfy RF exposure compliance.
DO NOT
• Operate the transmitter when anyone is within 90 cm of the antenna.
• Operate the transmitter unless all RF connectors are secure and any open connectors are properly terminated.
• Operate the equipment near electrical blasting caps or in an explosive atmosphere.
All equipment must be properly grounded for safe operations. All equipment should be serviced only by a qualified
ELPRO staff only.
FCC Notice:
Part 90 – This device has been type accepted for operation by the FCC in accordance with Part90 of the FCC rules
(47CFR Part 90). See the label on the unit for the specific FCC ID and any other certification designations.
Note: This device should only be connected to Devices that are covered by either a FCC DoC or are FCC certified.
Antenna Models:
Manufacturer
ELPRO
Model Number
CFD940
Net
2 dBi Gain
ELPRO
ELPRO
ELPRO
SG900EL
SG940-6
YU6-940
5 dBiGain
8 dBi Gain
11 dBi Gain
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Safety Notices:
Exposure to RF energy is an important safety consideration. The FCC has adopted a safety standard for human exposure to radio frequency electromagnetic energy emitted by FCC regulated equipment as a result of its actions in
Docket 93-62 and OET Bulletin 65 Edition 97-01.
Limitations and Condition of Use:
ELPRO E2-950 radio module is designed as a reusable module for use with future development of ELPRO products.
The module is limited for use by ELPRO only. This module is not to be made available for third party use or in any
OEM arrangements.
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Elpro Technologies E2-450 Radio Transceiver Module Instruction Manual
CONTENTS
CHAPTER 1 - INTRODUCTION ..................................... 5
CHAPTER 2 - Module Description .................................. 5
..................................................................................... 5
.................................................................................. 5
.................................................................................. 5
2.0
M AIN H OST I NTERFACE ............................................ 5
2.1
A LTERNATE H OST I NTERFACE .................................. 6
2.2
P RODUCTION I NTERFACES ........................................ 6
CHAPTER 3 - OPERATION ............................................ 6
CHAPTER 4 - Locale ....................................................... 8
4.0
U NITED S TATES ...... E RROR !
B OOKMARK NOT DEFINED .
CHAPTER 5 - Interface Pin Description .......................... 8
5.0
M AIN H OST I NTERFACE P IN D ESCRIPTION ................. 8
5.1
A LTERNATE H OST I NTERFACE P IN D ESCRIPTION ....... 9
5.3
P
ROTECTIVE
E
ARTHING
P
OINT
................................ 10
CHAPTER 6 - SPECIFICATIONS ................................. 10
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CHAPTER 1 - INTRODUCTION
The E2-950 is a radio modem module that will be used as a base radio for a number of Elpro wireless products in the future. It will be primarily used to act as a wireless network adapter for transfer of 802.11 data frames over lower speed wireless links. The E2-950 consists of a host microcontroller, an RF transceiver section, and a power supply section.
CHAPTER 2 - Module Description
Alternate Host Interface
Main Host
Interface
Production Interfaces
Grounded Mounting Holes
2.0 Main Host Interface
The main host interface is delivered through a 20 pin standard right angle pin header connector indicated in the picture above. The pin description will be described in chapter 4. This interface provides power supply to the module.
This interface also provides a serial interface to the module where data can be supplied to be transmitted and received through.
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Elpro Technologies E2-450 Radio Module Instruction Manual
2.1 Alternate Host Interface
The alternate host interface port provides similar signals to the main host interface. This port may be used for future development.
2.2 Production Interfaces
The production interfaces consists of JTAG ports and serial interfaces directly to microcontrollers. These interfaces are used in production and development only.
CHAPTER 3 - OPERATION
The host system communicates with the E2-950 module via the serial interface provided by the main host interface.
The serial interface is a standard TTL UART interface in full duplex asynchronous connection. The baud rate is
1.0Mbps. RTS and CTS lines are used to provide flow control between the host and radio processors.
The serial protocol is a proprietary message structure.
Message Framing
Message framing is based on PPP Byte stuffing. The special characters 0x7F, 0x7D and 0xFF are the beginning of a frame, data link escape and end of frame characters respectively.
Each message begins with the transmission of the start of frame character. This is followed by the message data payload for the message end of the message is indicated by the end of frame character.
Occurrence of the characters for start of frame, end of frame, or the data link escape character within the data packet is indicated by stuffing an additional data link escape character into the data stream before the special character and then setting bit 5 of the control character to 0.
Whenever the start flag character is detected, the framer state is reset to receiving the first data payload byte. (Start flag should never occur in the data payload due to the escaping scheme above.)
The end of frame character ensures that the transmitter and receiver are synchronised at the beginning of the next data frame. If they are not correctly synchronised, the 0xFF will result in the additional “ones” being detected as a long stop condition at the receiver and subsequent characters being correctly synchronised.
Message Format
Endian
All multi-byte fields are transmitted in little endian format.
General Message Format
Table 1 describes the general format of the messages including the start and end flags.
START_FLAG
Service_code
1 byte
2 bytes
Start of message identifier (0x7E)
Service code to identify message type and message ID
Payload Data
END_FLAG
0-n bytes Message payload data. Interpreted according to Service code
1 byte End of message identifier (0xFF)
Table 1: General message format
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Service code encoding
Table 2 describes the encoding of the Service code field from the Service Type and Service ID b15 - b14 Service Type b13 - b0
00: request
01: indicate
10: confirm
11: unused
Service ID
0x41: Transmit
0x42: Flush
0x43: Receive
0x44: Local_Management
0x45: Extended Transmit
0x46: Extended Flush
0x47: Extended Receive
Table 2: Service code encoding
Service types
Table 3 describes the service types and their interactions.
Request
(0b00)
Request messages are used where a message acknowledgement is required. A confirm message is expected to be sent from the other party.
Matching of request and confirm messages depends on the message ID.
Messages may include a unique handle to that can used to match request to confirm, or the process transmitting the message can ensure that only one message of that type is outstanding at any time.
Indicate (0b01) Used when acknowledgement of the message is not required. Indicate messages do not have any matching confirm message.
Confirm (0b10) Confirm messages are returned to the process that initiated a Request message to acknowledge receipt of the request message (and possible acknowledge processing of the request message is complete). Generation of the Confirm message and the details of any payload data depend on the
Service ID for the message.
The Service ID for the confirm must match the service ID for the original request message.
Table 3: Service types
For more detailed information about the protocol, refer to ELPRO document; spec_E2-Radio-io-protocol_V2-5.doc.
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Elpro Technologies E2-450 Radio Module Instruction Manual
Pin
4
5
6
1
2
3
7
8
9
10
CHAPTER 4 - Locale
The E2-950 radio is designed to operate in frequency bands as listed below. These bands are fully supported for
North America.
Model (X is W for 25kHz bandwidth, N for 12.5kHz) Supported Frequency Band
E2-950-WR-P5W-F937-X 932-942 MHz
CHAPTER 5 - Interface Pin Description
5.0 Main Host Interface Pin Description
11
12
16
17
18
19
20
13
14
15
Signal
GND
5V_RADIO
GND
5V_RADIO
GND
VSUP_CON
GND
VSUP_CON
3.3V_RADIO
CTS0_7
3.3V_RADIO
RTS0_7
BRX
TXD0_7
BTX
RXD0_7
_SHDN
AUX1 nR_OC
GND
Description
Ground
5V supply rail supplied by host
Ground
5V supply rail supplied by host
Ground
Main DC input power supply rail of the host (9-30V)
Ground
Main DC input power supply rail of the host (9-30V)
3.3V supply rail supplied by host
Clear to send (When toggled, it indicates that the host should wake up.)
3.3V supply rail supplied by host
Ready to Send (When toggled, it indicates that the radio processor should wake up.)
Not used
Data Transmit
Not used
Data Receive
Radio Shutdown
Not used
Over Current
Ground
Direction
Input to module
Input to module
Input to module
Input to module
Input to module
Output from module
Input to module
Input to module
Input to module
Output from module
Input to module
Output from module
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5.1 Alternate Host Interface Pin Description
17
18
19
20
Pin
13
14
15
16
10
11
12
8
9
6
7
3
4
1
2
5
Signal
VSupply
GND
VSupply
GND
5V_CON
GND
5V_CON
GND
5V_CON nR_OC
3.3V_CON nEN_RADIO_PWR
3.3V_CON
TXD0_7
RXD0_7
RTS0_7
CTS0_7
N.C
N.C
Test Point
Description
13.8V regulated supply from host
Ground
13.8V regulated supply from host
Ground
5V regulated supply from host
Ground
5V regulated supply from host
Ground
5V regulated supply from host
Over Current
3.3V supply rail supplied by host
Radio Power Enable
3.3V supply rail supplied by host
Data Transmit
Data Receive
Ready to Send (When toggled, it indicates that the radio processor should wake up.)
Clear to Send (When toggled, it indicates that the host should wake up.)
Not connected
Not connected
Not used
Direction
Input to module
Input to module
Input to module
Input to module
Input to module
Output from module
Input to module
Input to module
Input to module
Input to module
Output from module
Input to module
Output from module
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Elpro Technologies E2-450 Radio Module Instruction Manual
5.3 Protective Earthing Point
There are five mounting screw points around the cage which are connected to the ground plane of the module. These should be screwed on with metallic screws to the metallic casing or ground points on the host system. Diagram above shows 2 of the possible 5 screw points for illustration only.
CHAPTER 6 - SPECIFICATIONS
Frequency
Transmitter/Receiver
932-952MHz
Transmit Power
Data Encoding
Receiver Sensitivity
Channel Bandwidths
Data Rate
Licensed - 5 Watt (+37dBm)
2-FSK, 4-FSK
25 KHz channel :
-98dBm @19,200 bps (4FSK), -108dBm @ 9600 bps (2FSK)
12.5 KHz channel :
-99dBm @9600 bps (4FSK), -109dBm @ 4800 bps (2FSK)
25 KHz channel
12.5 KHz channel
12.5 KHz channel : 4800 bps, 9600 bps
25 KHz channel : 9600 bps, 19,200 bps
Range, Line of Site (LoS)
Antenna Connector
Supply Voltage
Operating Temperature
Humidity
35Km (21mi.)
Female SMA Standard Polarity
9-30V (VSUP_CON)
-40 to +70 C
0-99% RH Non-Condensing
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