Adcon B900ss-20 Technical Manual

Radio modem card spread spectrum

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B900ss-20

Radio Modem Card

Spread Spectrum

(FCC Approved

Part 15.247)

Technical Manual

EDITION: 0.7 7 7 7

EDITION: 0.

UPDATED: August 7, 2001

Table of Contents

Summary of Contents for Adcon B900ss-20

Page 1 B900ss-20 Radio Modem Card Spread Spectrum (FCC Approved Part 15.247) Technical Manual Technical Manual Technical Manual Technical Manual EDITION: 0. EDITION: 0.7 7 7 7 EDITION: 0. EDITION: 0. UPDATED: August 7, 2001...
Page 2 Fax: 561-989-5310 Internet Site http://www.adcon.com E-mail info@adcon.com The information within this document may be modified without notice. No part of this manual can be duplicated or transferred, electronically or mechanically in any way, without ADCON AG.'s strict and written consent.
Page 3 ..................7 7 7 7 ..................................................2.2.1. General............................. 7 2.2.2. Specifications of the B900ss-20 ...................... 7 2.2.3. Schematic ............................9 2.3. Available Configuration ........................................................................
Page 4 Appendix 2: Mechanical Drawings........ Appendix 2: Mechanical Drawings Appendix 2: Mechanical Drawings ..............................................................34 ......34 34 Drawing of the B900ss-20 Card ....................................................................................34 ..
Page 5 FCC Compliance and Warning FCC Compliance and Warning FCC Compliance and Warning Thank you for choosing Adcon Telemetry's B900ss- - - - 20 Smart Spread Spectrum RF Thank you for choosing Adcon Telemetry's B900ss 20 Smart Spread Spectrum RF Thank you for choosing Adcon Telemetry's B900ss...
Page 6 Module introduction 2.1. Description The B900ss-20 is an FM radio transceiver with frequency hopping using an F.S.K modulation. The receiver is of a super beat oscillator type with heterodyning. It operates on the 902-928 MHz band and, therefore, is within U.S. FCC part 15.247 standard.
Page 7: General
2.2. Specifications 2.2.1. General The B900ss-20 is a radio card component that receives and transmits data according to a frequency table selected by the user. 2.2.2. Specifications of the B900ss-20 Dimensions Weight: <2 ozs. (< 50 grams) Dimensions: 1.57" x 1.69" x .29" (without antenna).
Page 8 • Digital Part Processor: FLASH Atmel Micro controller Programming: Upload and download with a PC through the RS232 serial link and a specific interface (Demo Kit D900). Program Mem.: 8 Ko of FLASH Data Memory: 512 bytes of RAM for stack and data EEPROM Memory: 512 bytes for the HAYES parameters (registers S).
Page 9: Schematic
2.2.3. Schematic See Appendix 1 for the principle schematics and the physical description of the card.
Page 10: Software Configuration
2.3. Available Configuration 2.3.1. Software Configuration The B900ss-20 has 3 operating modes managed by the WinB900 Software (See Chapter • "Hayes". • Point-to-Point. • Network (future) 2.3.2. Hardware Configuration All the B900SS product radio modules are delivered with the necessary software for operation.
Page 11 "ATtention". The commands follow and are coded on one or several characters eventually with additional data. Since the B900ss-20 does not operate exactly like a voice modem, it includes additional "AT" codes. These commands are principally used to read and write the data in the configuration...
Page 12 3.3. "Point-to-Point" Mode In this mode, two B900ss-20 Modems can communicate together without getting any interference with other Modems. For this purpose, their work is synchronized and constantly jumping frequency, avoiding interference with another transmitter: if one or more channels are busy, the data will be transmitted through another channel.
Page 13 3.4. "Network" Mode In this mode, several B900ss-20 Modems are able to communicate with each other. Therefore, they constitute a Network handled by a Server Modem that can hold up to 16 Client Modems (6 in the actual V0.2 version).
Page 14: Installation And Connection
3.5. Demo Kit Utilization 3.5.1. Installation and Connection A D900SS-20 Demo Kit includes a plate that holds the B900ss-20 radio module, the antenna and the RS232 interface card. In order to use it, connect the plate to a PC's COM Port through the supplied serial cable and connect the power supply (see picture).
Page 15: Winb900 Software Utilization In Point-To-Point Mode
3.5.2. WinB900 Software Utilization in Point-to-Point Mode The WinB900 Software can have two radio modules communicate between the COM1 and COM2 Port of a PC. In a first phase, the two modems have to recognize each other ("Acquisition"). Go in the "Quick Configuration"...
Page 16 Consequently, you can communicate between the two Modems with the ‘Point-to- Point Dialogue’ Option from the "Quick Configuration" menu. When this option is selected, the software displays the following screen: The different fields and buttons are described below: • "Sent Characters" Field This side of the window sends the data entry.
Page 17 • "Characters Count" Field This field allows the selection of the character count to be sent if the selected test frame type is any other than "free". • Button: "Send" This button sends the frame entered previously to the Characters section to be sent.
Page 18: Use Of The Winb900 Software In Network Mode
3.5.3. Use of the WinB900 Software in Network Mode The operating principle is similar to the Point-to-Point Mode. In a first phase, the two modems have to recognize each other ("Acquisition"). Go in the "Quick Configuration" Menu, to the "Network Acquisition" option. When this option is selected, the software displays the following screen: It should be noticed that if the Modem already holds a Network Number and Clients, these two pieces of information will display in the "Network No."...
Page 19 You can then communicate between the two Modems with the ‘Network Dialogue’ Option from the "Quick Configuration" Menu. When you pick this option, the software displays the following: The different fields and buttons are similar to the ones described in the previous paragraph at the "Point-to-Point Dialogue"...
Page 20: Use Of The "Terminal" Or "Hyperterminal" Software
3.5.4. Use of the "Terminal" or "HyperTerminal" Software The Demo Kit or the B900ss-20 radio modules can also be handled from a Windows "HyperTerminal" or "Terminal" type communication software. The software has to be configured, in order to communicate at 19200 Baud, 8 bits, no parity, 1 stop bit through a Serial link.
Page 21: General
Chapter 4. Advanced Operation 4.1. General The section "Basic Operation" showed us how to operate the B900ss-20 Radio Module and its D900SS-20 Demo Kit. This section's objective is to know the module more completely; particularly the Hayes commands necessary to handle the modem.
Page 22 4.2. "Hayes" Protocol Commands 4.2.1. General These commands configure the Modem assigning different values in the registers (S200 and next). They also enable the user to know the state of the registers and the version of the modem software. These frames can only be sent if the CTS signal is active except when in Acquisition Mode.
Page 23: Description Of The Standard Commands
Display of the S Number n Register content. Display of the S Number n Register content. The content of the B900ss-20 operating parameters are found in named 'S' registers, and are numbered as described in Chapter VII- 3. Some parameters are standard for all the Hayes Modems; others are specific to B900ss-20.
Page 24: Registers Description
Modem significant registers (radio configuration, serial configuration, operating mode...) are sent on the serial link uncoded, ready to be displayed using a software such as "Terminal" for Windows. The response is a list of all the used registers with their value, each register being separated from the other with the "Carriage Return"...
Page 25: Acquisition Of Two Point-To-Point Modems
4.3. Utilization Example 4.3.1. Acquisition of two Point-to-Point Modems To send the following commands to the Modem, it is necessary to use software such as HyperTerminal for Windows. • Parameterization of the "Master" Modem" : User: /* run in Hayes Mode. */ Modem response: O<CR>...
Page 26 User: AT0<CR> /* Run in Point-to-Point Mode */ Modem response: O<CR>...
Page 27 • Parameterization of the "Slave" Modem: Before parametering the Slave Modem, the Server must have been configured and must be in Acquisition Mode. User: /* Run in Hayes Mode. */ Modem response: O<CR> User: ATS200=3<CR> /* Choice of the Frequency Table 3. */ Modem response: O<CR>...
Page 28 4.4. Radio Test Commands These Special AT commands are integrated in the B900ss-20 in order to measure in continuous emission, and are primarily used during radio tests (radiated power, line width, etc.) to respect the Part15-247 FCC standard. It stops when any character is sent: •...
Page 29: Hayes Commands
4.5. Utilization of WinB900 4.5.1. Hayes commands The parameterization with the Hayes commands can be simply done with the WinB900 software. The option "Hayes Commands" of the "Advanced Configuration" allows to perform all of the Hayes Commands on the modems connected to the PC. When this option is selected, the software displays the following window: The top section allows the user to select the port to work on and describes the state of the serial link (speed, parity, etc.).
Page 30 There are four types of possible manipulation: " Read/Write on the Registers: Select the "ATSxxx" option in the "Available Commands", then select the required register clicking on it in the "Registers List". • If you want to read a register, click now on the "Read" button. The "Syntax" window will display the sent command while the "Radio Module Response"...
Page 31: Test Commands
4.5.2. Test Commands (Future software option – Not available at this time) Carrier Transmission Tests can also be simply realized with the WinB900 Software. The "Carrier Test" option of the "Advanced Configuration" Menu allows to test Carrier Transmission from a radio module. When this option is selected, the software displays the following window: •...
Page 32 • "Transmission" Button This button allows initiating the selected carrier transmission based on the chosen channel. When this button is selected, a red rectangle appears indicating that the modem is transmitting. • "Stop" Button This button stops transmitting the selected carrier. •...
Page 33 Appendix Appendix Appendix Appendix 1: Schematic Block Diagram 1: Schematic Block Diagram 1: Schematic Block Diagram 1: Schematic Block Diagram Switch 902 MHz MicroController Transmitter/ Receiver Interface EEPROM Memory Ack_Tx Lock...
Page 34 Appendix 2: Mechanical Drawings Appendix 2: Mechanical Drawings Appendix 2: Mechanical Drawings Appendix 2: Mechanical Drawings Drawing of the B900ss-20 Card Antenna Hot Point Interface Connector (14FMS-1.0SP-TF Ground Antenna (Cold Point) 1° Connector Contact (RTS) 1.57" 1.71" WARNING : WARNING : WARNING : WARNING : In the "Rev.
Page 35: Interface Signals
Interface Signals The Modem will communicate with the host through an interface with the following signals: Interface Function Signal µC Function direction µC* RTS ! Request To Send Or Data Out SPI ( Data Out SPI ! Data out during the programming of the Flash Program.
Page 36 Signals Description N.U.: Not used. By default, these signals are linked to the micro-controller, configured at input but are not actually used. LOCK: Solely used on the Portable: Indicates that the synchronization with the Base is valid. Latter indicates if the Server is at radio range. Active on high.
Page 37 Connector Drawing The selected connector is the 14FMS-1.0SP-TF from the JST Manufacturer. It is a CMS and non-ZIF (Zero Insertion Force) 14-pin angled connector with a spacing of .039". With: Connector Connector Connector Connector A (inch) A (inch) A (inch) A (inch) B (inch) B (inch)
Page 38 Appendix 3: Ant Appendix 3: Antenna Connection Appendix 3: Ant Appendix 3: Ant enna Connection enna Connection enna Connection Here is an example of the coaxial cable connection of the 900MHz antenna provided with the Demo Kit. The hot and cold point can easily be seen before and after soldering the cable.
Page 39 20 Demo Kit Composition The D900SS-20 Demo Kit is used to test with ease the B900ss-20 radio module. For this purpose, this kit connects a radio module to a serial interface in order to be able to work with the radio module without having to develop a specific interface.
Page 40 Connections Here is how to make the connections to the Demo Kit in order to operate them with the WinB900 Software: COM1 No. 1 Radio Plate (Master) Windows 95/98 Power Supply PC and two Serial Ports COM2 No. 2 Radio Plate (Slave) Power Supply...
Page 41 Appendix 5: Timing Diagrams Appendix 5: Timing Diagrams Appendix 5: Timing Diagrams Appendix 5: Timing Diagrams The user sends data Stop on CTS, Length ≥ S215 Stop on TimeOut Length<S215 Serial Data Serial Data Serial Data TimeOut inactive Active Radio Transmission Radio Transmission Radio Result: OK...
Page 42 The user Receives data Data Reception Data Reception Data Reception Radio inactive active Serial Data Serial Data Serial Data cut in two. The CTS signal indicates that the user reception buffer is full. Therefore, the modem does not send data on the serial link during that time.
Page 43 This section shows a list of all the registers that configure the modems with software such as HyperTerminal for Windows. The B900ss-20 modem will offer several facilities of possible settings. Each parameter will be in a register and will have a default value that can be changed in sending the command 'ATSxxx=yy' (Hayes command).
Page 44 Access Register Name Description Type Serial Link Serial Link Serial Link Serial Link S210 Speed. Indicates the speed on the Serial Connection '2': 2400 Baud. '3': 4800 Baud. '4': 9600 Baud. '5': 19200 Baud '5': 19200 Baud '5': 19200 Baud '5': 19200 Baud (Default) (Default) (Default).
Page 45 Access Register Name Description Type Operation Operation Operation Operation S220 Server or Client Mode Indicates the operation of the Modem. When the Modem is configured as Master (or Server), the S252 Register switches automatically to 0xFF, while it switches to 0 when configured as Slave (or Client).
Page 46 Appendix 7: Revisions History Appendix 7: Revisions History Appendix 7: Revisions History Appendix 7: Revisions History No. of No. of No. of No. of Date Date Date Date Author Author Author Author Subject Subject Subject Subject Revision Revision Revision Revision 01/08/00 Document Creation 08/08/00...