Adcon Telemetry D900SS 20 A Users Manual

B900ss-20

Radio Modem Card

Spread Spectrum

(FCC Approved

Part 15.247)

Technical Manual

Technical ManualTechnical Manual

UPDATED: August 7, 2001

EDITION: 0.

EDITION: 0.7777

EDITION: 0.EDITION: 0.

2

ADCON AG

Adcon Telemetry, Inc.

1001 Yamato Road

Suite 305

Boca Raton, Florida 33431

Tel: 561-989-5309

Fax: 561-989-5310

Internet Site

http://www.adcon.com

E-mail

info@adcon.com

The information within this document may be mo dified 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.

3

INDEX

Chapter 1. Objective................................

Chapter 2. Module introduction ................................

2.1. Description................................

2.2. Specifications................................

2.2.1. General.............................................................................................................................................7

2.2.2. Specifications of the B900ss-20 ......................................................................................................7

2.2.3. Schematic.........................................................................................................................................9

2.3. Available Configuration................................

2.3.1. Software Configuration.................................................................................................................10

2.3.2. Hardware Configuration................................................................................................................10

Chapter 3. Basic Operation................................

3.1. General................................

3.2. "Hayes" Mode................................

3.3. "Point-to-Point" Mode................................

3.4. "Network" Mode................................

3.5. DemoKit Utilization ................................

3.5.1. Installation and Connection..........................................................................................................14

3.5.2. WinB900 Software Utilization in Point-to-Point Mode ................................................................15

3.5.3. Use of the WinB900 Software in Network Mode.........................................................................18

3.5.4. Use of the "Terminal" or "HyperTerminal" Software .................................................................20

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........................... 6666

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................................ 6666

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............................ 7777

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........................ 11

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.............. 5555

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........... 12

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.................... 13

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................ 14

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......... 10

10

..................

1010

11

1111

.... 11

11

........

1111 11

1111 12

1212 13

1313 14

1414

Chapter 4. Advanced Operation................................

4.1. General................................

4.2. "Hayes" Protocol Commands................................

4.2.1. General...........................................................................................................................................22

4.2.2. Description of the standard commands.......................................................................................23

4.2.3. Registers Description ....................................................................................................................24

4.3. Utilization Example................................

4.3.1. Acquisition of two Point-to-Point Modems..................................................................................25

4.4. Radio Test Commands................................

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......................... 21

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............................... 22

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................. 25

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........... 28

......................

21

2121

.... 21

21

........

2121 22

2222

25

2525

28

2828

4

4.5. Utilization of WinB900................................

4.5.1. Hayes commands........................................................................................................................... 29

4.5.2. Test Commands.............................................................................................................................31

Appendix 1: Schematic Block Diagram

Appendix 1: Schematic Block Diagram ................................

Appendix 1: Schematic Block DiagramAppendix 1: Schematic Block Diagram Appendix 2: Mechanical Drawings

Appendix 2: Mechanical Drawings................................

Appendix 2: Mechanical DrawingsAppendix 2: Mechanical Drawings

Drawing of the B900ss-20 Card ................................

Interface Signals................................

Connector Drawing ................................

Connecting Cable Drawing................................

Appendix 3: Antenna Connection

Appendix 3: Antenna Connection ................................

Appendix 3: Antenna ConnectionAppendix 3: Antenna Connection

Appendix 4: D900SS

Appendix 4: D900SS----20 DemoKit

Appendix 4: D900SSAppendix 4: D900SS

Composition................................

Connections................................

Appendix 5: Timing Diagrams

Appendix 5: Timing Diagrams................................

Appendix 5: Timing DiagramsAppendix 5: Timing Diagrams Appendix 6: Description of the registers

Appendix 6: Description of the registers ................................

Appendix 6: Description of the registersAppendix 6: Description of the registers

Registers used by the ‘AT’ protocol................................

................................................................

20 DemoKit

20 DemoKit20 DemoKit

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............................. 37

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............ 29

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....................33

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................. 37

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.................43

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29

2929

33

3333 34

3434

.......... 34

....................

34

3434

... 35

35

......

3535 37

3737 37

3737

38

3838

39

3939

......... 39

39

..................

3939

......... 40

40

..................

4040

...41

41

......

4141 43

4343

... 43

43

......

4343

Appendix 7: Revisions History

Appendix 7: Revisions History ................................

Appendix 7: Revisions HistoryAppendix 7: Revisions History

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...................................

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...46

46

......

4646

5

Chapter 1. Objective

The objective of this document is to present the features and the application of the B900ss-20 radio module.

The operation of this module is divided into two chapters:

• The ‘Basic Operation’ chapter describes the Module operating modes and allows the user to learn the WinB900 Software in walking through it.

• The ‘Advanced Operation’ is especially for users that want to program the module directly. It presents all the available commands.

FCC Compliance and Warning

FCC Compliance and WarningFCC Compliance and Warning

Thank you for choosing Adcon Telemetry's B900ss

Thank you for choosing Adcon Telemetry's B900ss----20 Smart Spread Spectrum RF

Thank you for choosing Adcon Telemetry's B900ssThank you for choosing Adcon Telemetry's B900ss Module, which has been tested and foun d to comply with the limits for a Class B digita

Module, which has been tested and foun d to comply with the limits for a Class B digita l

Module, which has been tested and foun d to comply with the limits for a Class B digitaModule, which has been tested and foun d to comply with the limits for a Class B digita device, pursuant to Part 15 of the FCC Rules.

device, pursuant to Part 15 of the FCC Rules.

device, pursuant to Part 15 of the FCC Rules.device, pursuant to Part 15 of the FCC Rules. In accordance with FCC rules and regulations, Part 15, this is to advise you that if the

In accordance with FCC rules and regulations, Part 15, this is to advise you that if the

In accordance with FCC rules and regulations, Part 15, this is to advise you that if the In accordance with FCC rules and regulations, Part 15, this is to advise you that if the FCC ID number of the Smart Spread Spectrum is not visible when installed inside your

FCC ID number of the Smart Spread Spectrum is not visible when installed inside your

FCC ID number of the Smart Spread Spectrum is not visible when installed inside your FCC ID number of the Smart Spread Spectrum is not visible when installed inside you r device, then the outside of your

device, then the outside of your device into which the module is installed must also

device, then the outside of your device, then the outside of your display a label referring to the enclosed module. This exterior label can use wor din g

display a label referring to the enclosed module. This exterior label can use wor din g

display a label referring to the enclosed module. This exterior label can use wor din g display a label referring to the enclosed module. This exterior label can use wor din g such as the following: "Contains FCC ID: MQXB900ss

such as the following: "Contains FCC ID: MQXB900ss----20." Any simila r w ording that

such as the following: "Contains FCC ID: MQXB900sssuch as the following: "Contains FCC ID: MQXB900ss expresses the same meaning may be use

expresses the same meaning may be used.

expresses the same meaning may be useexpresses the same meaning may be use In addition the following statement shoul d also be included on an exterior label (or in

In addition the following statement shoul d also be included on an exterior label (or in

In addition the following statement shoul d also be included on an exterior label (or in In addition the following statement shoul d also be included on an exterior label (or in your documentation, if the unit is too small to accommodate the label) "

your documentation, if the u nit is too small to accommodate the label) "This device

your documentation, if the unit is too small to accommodate the label) "your documentation, if the unit is too small to accommodate the label) " complies with Part 15 of th e FC C Rules . O peration is subject to the followin g t

complies with Part 15 of the FC C R ules . O pera tion is s ubject to the following t w o

complies with Part 15 of th e FC C Rules . O peration is subject to the followin g tcomplies with Part 15 of th e FC C Rules . O peration is subject to the followin g t conditions: (1) this device may not cause harmful interference, and (2) this device must

conditions: (1) this device may not cause harmful interference, and (2) this device must

conditions: (1) this device may not cause harmful interference, and (2) this device must conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference that may cause undesired operation.

accept any interference that may cause undesired operation. "

accept any interference that may cause undesired operation.accept any interference that may cause undesired operation. Adcon’s Smart Spread Spectrum Modules

Adcon’s Smart Spread Spectrum Modules are designed as component devices, which

Adcon’s Smart Spread Spectrum ModulesAdcon’s Smart Spread Spectrum Modules require external compo

require external components to function. The B900ss

require external comporequire external compo for full Part 15 compliance and are a pp roved by the FCC. The purchaser understands

for full Part 15 compliance and are a pp roved by the FCC. The purchaser understands

for full Part 15 compliance and are a pp roved by the FCC. The purchaser understands for full Part 15 compliance and are a pp roved by the FCC. The purchaser understands that further approvals may be required prior to the sale o r operation of the device, and

that further approvals may be required prior to the sale o r operation of the device, and

that further approvals may be required prior to the sale o r operation of the device, and that further approvals may be required prior to the sale o r operation of the device, and agrees to utilize the

agrees to utilize the com pon ent in keeping with all laws governing its operatio n in the

agrees to utilize theagre es to ut ilize the country of operation."

country of operation."

country of operation."country of operation." In order to comply with the FCC rules and regulations, the B900ss

In order to comply with the FCC rules and regulations, the B900ss----20 RF Module may

In order to comply with the FCC rules and regulations, the B900ssIn order to comply with the FCC rules and regulations, the B900ss only be used with approved antennas that have be en tested with this radio. At this

only be used with approved antennas that have be en tested with this radio. At this

only be used with approved antennas that have be en tested with this radio. At thisonly be used with approved antennas that have be en tested with this radio. At this writing the only approved antenna is the quarter

writing the only approved antenna is the quarter----wave rubber duck ant enna by MAT. If

writing the only approved antenna is the quarterwriting the only approved antenna is the quarter the OEM integrates the MQXB90 0ss

the OEM integrates the MQXB90 0ss----20 into their fin al pr oduct, where the product

the OEM integrates the MQXB90 0ssthe OEM integrates the MQXB90 0ss utilizes a non

utilizes a non----approved a ntenna, the OEM is responsible for obtaining a separate

utilizes a nonutilizes a non authoriza

authorization on the final p roduct.

authorizaauthoriza

approved antenna, the OEM is responsible for obtaining a separate

approved antenna, the OEM is responsible for obtaining a separate approved antenna, the OEM is responsible for obtaining a separate

tion on the final product.

tion on the final product.tion on the final product.

nents to function. The B900ss----20 modules are intended to allow

nents to function. The B900ssnents to function. The B900ss

component in keeping with all laws governing its operation in the

component in keeping with all laws governing its operation in the component in keeping with all laws governing its operation in the

20 Smart Spread Spectrum RF

20 Smart Spread Spectrum RF 20 Smart Spread Spectrum RF

device into which the module is installed must also

device into which the module is installed must also device into which the module is installed must also

20." Any similar wording that

20." Any similar wording that 20." Any similar wording that

d.

d. d.

This device

This device This device

wo

wo wo

"

" "

are designed as component devices, which

are designed as component devices, which are designed as component devices, which

20 modules are intended to allow

20 modules are intended to allow 20 modules are intended to allow

20 RF Module may

20 RF Module may 20 RF Module may

wave rubber duck antenna by MAT. If

wave rubber duck antenna by MAT. If wave rubber duck antenna by MAT. If

20 into their final product, where the product

20 into their final product, where the product 20 into their final product, where the product

l

l l

6

This wireless transmitter contains a low power tr ans mitter.

This wireless transmitter contains a low power transmitter. When in transmit it sen

This wireless transmitter contains a low power tr ans mitter.This wireless transmitter contains a low power tr ans mitter. out radio frequ

out radio frequency (RF) energy.

out radio frequout radio frequ Commi

Commission

CommiCommi with the

with the FCC

with the with the inches (5 centimeters)

inches (5 centimeters) away from the an tenna

inches (5 centimeters) inches (5 centimeters) D900ss

D900ss----20

D900ssD900ss Modifications or attachments

Modifications or attachments could dama ge the transmitter, alter the RF exposure

Modifications or attachments Modifications or attachments may violate FCC

may violate FCC regulations.

may violate FCC may violate FCC

ssion (FCC) adopted RF

ssionssion

20 Demo Kit

2020

ency (RF) energy. In August 1996 the Fe deral Communications

ency (RF) energy. ency (RF) energy.

(FCC) adopted RF exposure safety guidelines.

(FCC) adopted RF (FCC) adopted RF

FCC’’’’ssss RF safety exposure guideli

RF safety exposure guideline

FCCFCC

RF safety exposure guideli RF safety exposure guideli

away from the antenna while the unit is transmitting.

away from the antenna away from the antenna

Demo Kit comes supplied with a permanently

Demo Kit Demo Kit

comes supplied with a permanently attached antenna.

comes supplied with a permanently comes supplied with a permanently

regulations.

regulations.regulations.

In August 1996 the Federal Communicat ions

In August 1996 the Federal Communicat ions In August 1996 the Federal Communicat ions

exposure safety guidelines. To maintain compliance

exposure safety guidelines. exposure safety guidelines.

nessss it is recommended t hat you remain 2

it is recommended that you remain 2

nene

it is recommended that you remain 2 it is recommended that you remain 2

while the unit is transmitting. The

while the unit is transmitting. while the unit is transmitting.

could damage the transmi tter, alter the RF exposure, and

could damage the transmi tter, alter the RF exposurecould damage the transmi tter, alter the RF exposure

When in transmit it sends

When in transmit it sen When in transmit it sen

attached antenna.

attached antenna. attached antenna.

Chapter 2. 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.

ds

ds ds

To maintain compliance

To maintain compliance To maintain compliance

The

The The

, and

, and , and

Using the frequency synthesis, it has a maximum of 50 channels spaced by 150 kHz and can communicate with equipment via a serial interface with RS-232 standard and TTL levels. The serial link is completely programmable from 2400 up to 38400 Baud. The radio rate is established at 40 KBits/s.

The B900ss-20 uses the most recent technology of flash memory micro controller, which allows the user to update or to load new features through the serial link.

Many parameters are programmable through the se rial link and the default configuration is memorized in an EEPROM (ROM).

At each activation, the radio modem component is programmed with its configuration parameters (Channel, Speed, Protocol, etc.).

The default data are: RS-232 connection at 19,200 Baud, 8 bits, 1 stop bit, no parity, Frequency Table 1, slave modem.

All these parameters are accessible and modifiable with HAYES or AT commands.

7

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

Electronics

Weight: <2 ozs. (< 50 grams) Dimensions: 1.57" x 1.69" x .29" (without antenna). Connectors: 1 14FMS-1.0SP-TF 14 pin connector fro m JST.

• Radio part

Frequency: 902 to 928 MHz (FCC part 15-247) . Number of channels: 50, channel 0 to 49. Channel selection: Frequency hopping, according to a random

table of 50 channels. 8 tables are stored in

EEPROM memory. Radio rate: 40KBits /s . Modulation/Demodulation: FSK (Frequency Shift Keying). Bit encoding: Quad Frequential encodi ng. RF sensitivity: -90 dBm (± 2 dB) at 50 Ohms. RF power: +13 dBm (20 mW) (± 2 dB) over 50 Ohms. Error rate: 10 Saturation: Two modules communicate at 0 dBm. Operating Temp.: Standard Operation: +32°F to +122°F.

(0º to +50º Centigrade) Storage Temp.: -40°F to +176° F (-40ºC to +80º C) Relative humidity: from 20% to 90% RH (without condensation).

-4

to -88 dBm.

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) .

Serial Link: 2400 to 38400 Baud, NRZ format, 5 volts TTL level.

• Power Supply

Supply voltage: 5V monitored (± 5%). Consumption: Receive Transmit Sleep

<40mA <80mA <5mA

• HAYES Commands : The user can program all the parameters. A Windows programming s oftw are is supplied "on-line" with documentation support. (See AT commands).

Examples of Hayes commands:

Serial: Serial link rate, parity, bit count, stop bit count, Serial Time-

out, … Radio: Channels table selection, retry count, … Mode: Point to Point, Network, Stand-by, etc.

• Performance range Length of com.: 164 to 328 Feet (50 to 100 meters) in difficult

environment (buildings, reinforced concrete)

984 to 1,312 Feet (300-400 meters) in open

environment (Ground level). 3,281 Feet (1 Km) in view and in height (example: between buildings)

Obstacles Impact: Walls, trees, obstacles can strongly reduce the

range

9

2.2.3. Schematic

See Appendix 1 for the principle schematics and the physical description of the card.

10

2.3. Available Configuration

2.3.1. Software Configuration

The B900ss-20 has 3 operating modes managed by the WinB900 Software (See Chapter

3):

• "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. An evaluation Demo Kit (D900SS-20) is available at Adcon and allows the user to evaluate the radio module's performance. For more information, refer to Appendix 4.

With each radio module, the following is available:

• Series of programming ASCII messages to integrate the r a dio modems w ith a s erial link.

• A Windows configuration and test software programming the radio modules and testing the links (quality, distance, shadow area, etc.).

• A set of reference material available in CD-ROM.

11

Chapter 3. Basic Operation

3.1. General

The B900ss-20 can operate with three data communication modes:

• "Hayes" program the modem's parameters.

• "Point-to-Point" the function of an RS-485 cable). This mode automaticall y handles the data security (encapsulation, iterations, etc.)

• "Network": Client/Server structure. A Server will then be able to handle up to 16 clients simultaneously.

: inspired from the standard Hayes for voice modems, it is used to

: Two B900ss-20 replace a cable (the Hal f-duplex operation copies

Several B900ss-20 can work together, in accordance with a

3.2. "Hayes" Mode

The Hayes commands used by the radio module are in conformity with the Hayes protocol standard used for the voice modems. This p rotocol is based on the following principle: A data frame always starts with the two ASCII characters "AT" for "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 confi guration registers stored in EEPROM.

12

3.3. "Point-to-Point" Mode

In this mode, two B900ss-20 Modems can co mmunicate 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.

On the other hand, a "Personal Network" owns each set of modem. The data use d for a "Personal Network" cannot be intercepted by another "Personal Network". Each "Personal Network" owns a Master, which handles the communication (synchronization, priority, etc.) and a Slave that obeys its Master.

The first synchronization is named "Acquisition", and let s a Slave get acquainted with its Master (No. of Personal Network, Frequency Table used, etc.). Eventually, at each powered reset, the Slave will synchronize, then later be able to communicate with its Master. A "Lock" signal shows if a Slave has been synchronized with its Master or not.

Eventually, this synchronization is maintained all along the Master/Slave Dialogue.

A hardware flow control (RTS/CTS) is present on the Mo dems serial link in order to let the user know that the buffer (130 characters) starts to saturate. The alarm level is by default 130 characters and can be programmed through the S215 Regis ter.

Finally, an Ack_Tx signal, synchronized on the RTS signal, allows the transmitter user t o know if the receiver user has received a data frame or not.

For more specific information and to get the Time Series Charts, see the following chapter ("Advanced Part") and the Appendix 5.

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 Mode m that can hold up to 16 Client Modems (6 in the actual V0.2 version).

The acquisition procedures, the modems synchronization and the R TS/CTS and Ack_Tx signals handling are the same as for the "Point-to-Point" Mode.

On the other hand, when a frame is sent, it is necessary that a character indicating th e receiver modem number precedes the data frame. Also, in receiving the frame, a character preceding this frame indicates the transmitter modem.

13

14

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference that may cause undesired operation.

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).

On the interface card, ALL the switches have to be set to 'Off' and, of course, the On/Off switch has to be on the 'On' position.

Serial Connection to a PC COM Port

Power Connecto r

(Battery or Power

Supply)

A Windows Software, 'WinB900' parameterizes and tes ts the B900s s -20 radio module. In order to install it on your PC, launch 'Setup.exe' located on the CD-ROM supplied in the Demo Kit, in the WinB900ss directory.

15

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 hav e to recognize each other ("Acquisition"). Go in the "Quick Configuration" Menu, to the "Acquisition" Option. When this option is selected, the software displays the following screen:

Select the table of the chosen channels as well as the No. of Personal network (between 1 and 65535), and then launch the Acquisition clicking on the "Point-to-Poi nt Acquisition" button. After clicking the button, the following message appears:

You can then quit the window. The Modems are synchronized (Green Led on).

16

Consequently, you can communicate between the two Modems with the ‘Point-toPoint 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.

• "Received Characters" Field

This side of the window shows the received data.

• "Test Frames" Selection

This selection allows the selection for the type of character sent. For example, 0x00 sends a character frame only made of a 0x00 binary character. If the "Free" frame type is selected, the frame can be typed by the user in the "Sent Character" field. This frame will then be sent.

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.

• Button: "Continuous"

This button sends continuously the frame entered previously to the Data section to be sent.

• Button: "Initialization"

This button reinitializes all the counter fields (Elapse Time, Character Count, Frame Count, etc.)

• Button: "Stop"

This button stops a continuous upload.

• Button: "Quit"

This button leaves this window and returns to the main menu.

• "Character Count Sent/Received" Fields

These fields show the sizes of the sent and received frames.

• "Elapsed time" Field

This field shows how long it takes the modem to upload the same frame during a

continuous upload.

• "Sent/Received/Cor r up ted Count" Fields

These fields show the amount of frames correctly uploaded, downloaded or

corrupted (or not received) since the start of a continuous upload.

• "Stop on Error" Selection

This selection stops automatically the continuous upload if a frame is corrupted.

18

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 hav e 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 hol ds a Network Number and Clients, these two pieces of information will display in the "Network No." and "Clients Count ". If the Network No. is modified, the Server will then lose all the Clients already acquired.

Acquisition can be launched by clicking on the "Acquisition" button. After this, the following message is displayed:

You can then quit the window. The Modems are synchronized (Green Led (On).

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" window. Only two new fields appear:

• "Network Number"

This field indicates the Network No. in the Server (COM1).

• "Client Number"

This field indicates the Modem No. in the Client (COM2).

20

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 co mmunicate at 19200 Baud, 8 bits, no parity, 1 stop bit through a Serial link. To start with a correct configuration for HyperTerminal and Terminal, the following directories are provided:

• "B900-CM1.ht" for "HyperTerminal" on COM1.

• "B900-CM2.ht" for "HyperTerminal" on COM2.

• "B900-CM1.trm" for "Ter minal" on COM1.

• "B900-CM2.trm" for "Ter minal" on COM2.

In this case, if your modems have already been configured and already been "Acquired", you can send data frames with these software immediately. Otherwise, refer to Chapter 4 (Advanced O peration) to know how to use the Registers.

21

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.

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.

These commands support the 'Hayes' protocol used by the voice Modems. When a command is sent, it

command is sent, it always has to be preceded

command is sent, it command is sent, it When a command has been sent, it

When a command has been sent, it always has to be followed

When a command has been sent, it When a command has been sent, it (carriage return, Hexadecimal 0x13 code).

(carriage return, Hexadecimal 0x13 code).

(carriage return, Hexadecimal 0x13 code).(carriage return, Hexadecimal 0x13 code). NOTE:

NOTE: The time slot between two characters of the command has to be inferior to

NOTE:NOTE: Time-Out (S214). As a result, the commands have to be sent by block:

A T Command Additive command ... <CR>

The sole exception

The sole exception The sole exception the Hayes Mode: In this case,

the Hayes Mode: In this case, the escape code ('+++')

the Hayes Mode: In this case,the Hayes Mode: In this case, preceded by a silence period th at lasts at le ast the sa me as time ou t. In this case only,

preceded by a silence period th at lasts at le ast the sa me as time ou t. In this case only,

preceded by a silence period th at lasts at le ast the sa me as time ou t. In this case only, preceded by a silence period th at lasts at le ast the sa me as time ou t. In this case only, the command will neither be preceded by AT, nor followed by <CR>

the command will neither be preceded by AT, nor followed by <CR>

the command will neither be preceded by AT, nor followed by <CR>the command will neither be preceded by AT, nor followed by <CR>

These commands are described in detail in the next chapter.

always has to be preceded

always has to be precededalways has to be preceded

is the passing command fro m the Operation Mode in pro gress

is the passing command fro m the Operation Mode in pro gress to

is the passing command fro m the Operation Mode in pro gressis the passing command fro m the Operation Mode in pro gress

by the 'AT' characters (ATtention).

by the 'AT' characters (ATtention). by the 'AT' characters (ATtention).

always has to be followed

always has to be followedalways has to be followed

the escape code ('+++')

the escape code ('+++') the escape code ('+++')

When a

When a When a

by the <CR> character

by the <CR> character by the <CR> character

to

to to

has to be followed and

has to be followed and has to be followed and

23

4.2.2. Description of the standard commands

Here is a description of possible commands: '+++':

'+++': Running in Hayes Mode.

'+++': '+++':

'ATO':

'ATO': Running in "Point

'ATO': 'ATO':

'ATSn?':

'ATSn?': Display of the S Numb er n Register content.

'ATSn?': 'ATSn?': The content of the B900ss-20 operating parameters are found in named

If the requested register is correct, the modem responds: ''Sxxx=yyy" with If the requested registe r is incorrect, the modem responds with the error

These parameters are saved in EEPROM Memory and automatically

'ATSn=m':

'ATSn=m': Assi

'ATSn=m': 'ATSn=m': Loading of a parameter in a register. This parameter is automatically save d

The n and m values are given in ASCII coded decimals. If the assigned If the assigned register is incorrect or if the value goes over the limits of this

'AT/S':

'AT/S': Content Uncoded Display of all Significant Records.

'AT/S': 'AT/S':

Running in Hayes Mode.

Running in Hayes Mode.Running in Hayes Mode. This command allows the user to return to Hayes Mode when the Modem is in "Point-to-Point" Mode. It cannot be preceded by AT, only by an idle time (blank) that can be set through the S214 register for the duration.

NOTE: When the Modem runs in "AT" Mode, it is no longer in radio receiver.

Running in "Point----to

Running in "PointRunnin g in "Po int This command allows the user to run the Modem in "Point-to-Point" Mode. To retrieve the "Hayes" Mode, send out the sequence ‘+++’.

Display of the S Number n Register content.

Display of the S Number n Register content.Display of the S Number n Register content. '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. (See Table in Appendix 6).

xxx: register number and yyy: register content. character 'E' (0x45).

reloaded during a reset or when powered up.

Assignment to the m Valu e at the S Register n Number.

gnment to the m Value at the S Re gister n Number.

AssiAssi

gnment to the m Value at the S Re gister n Number.gnment to the m Value at the S Register n Number. in EEPROM Memory. register is correct, the modem responds with the OK character 'O' (0x4F). register, the modem responds with the error characte r ' E' (0x45).

Content Uncoded Display of all Significa nt Records.

Content Uncoded Display of all Significa nt Records.Content Uncoded Display of all Significa nt Records.

to----Point" Mode.

toto

Point" Mode.

Point" Mode.Point" Mode.

24

All the 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 v alue, each register being separated from the other with the "Carriage Re turn" character (CR): "S200=xx<CR>S201=yy<CR>…."

'AT/V':

'AT/V': Uncoded Display of the Modem Software Version.

'AT/V': 'AT/V':

'ATM1':

'ATM1': Running in Acquisition Mode.

'ATM1': 'ATM1': This command allows to toggle from Normal Mode to Acquisition Mode.

'ATPx':

'ATPx': Running in Standby

'ATPx': 'ATPx':

x = '1' ! Standby.

'ATR':

'ATR': Parameters Reset.

'ATR': 'ATR':

Uncoded Display of the Modem Software Version.

Uncoded Display of the Modem Software Version.Uncoded Display of the Modem Software Version. The information on the version number, conception date and the program CRC are sent to the uncoded serial link, ready to be displayed using a software such as "Terminal" for Windows. The response is as follows: "Version: x.xx<CR> Date: MM/JJ/AAA<CR> CheckSum: 0xhhhh<CR>"

Running in Acquisition Mode.

Running in Acquisition Mode.Running in Acquisition Mode. The Modem is in Normal Mode by default.

If the command is given correctly, the modem responds with the OK character 'O' (0x4F), otherwise with the error character 'E' (0x45).

Running in Standby or Normal mode.

Running in StandbyRunning in Standby This command allows the user to toggle from Normal Mode to Standby Mode and vice versa, according to the 'x' value. The Modem is in Normal Mode by default. Then there is: x = '0' ! Normal,

If the command is correctly given, the modem responds with the OK character 'O' (0x4F), otherwise with the Error character 'E' (0x45).

Parameters Reset.

Parameters Reset.Parameters Reset. This command allows the user to reprogram ALL the stored EEPROM

registers and give them their value by default. If the command is correctly given, the modem responds with the OK character, 'O' (0x4F), otherwise with the Error character 'E' (0x45).

or Normal mode.

or Normal mode. or Normal mode.

4.2.3. Registers Description

This section is available in Appendix 6.

25

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 softwa re s uch as HyperTerminal for Windows.

• Parameterization of the "Master" Modem"

User: +++ /* run in Hayes Mode. */ Modem response: O<CR>

User: ATS200=3<CR> /* Choice of Frequency table 3. */ Modem response: O<CR>

User: ATS201=0<CR> /* Choice of No. 1 Synchronization

Frequency. */

Modem response: O<CR> User: ATS202=10<CR> /* Choice of No. 2 Synchronization Frequency. */

Modem response: O<CR> User: ATS203=20<CR> /* Choice of No. 3 Synchronization Frequency. */ Modem response: O<CR> User: ATS204=30<CR> /* Choice of No. 4 Synchronization Frequency. */ Modem response: O<CR> User: ATS220=2<CR> /* Choice of Master Mode. */

Modem response: O<CR> User: ATS250=1<CR> /* Choice of Personal Netwo rk No. */

Modem response: O<CR> User: ATM1<CR> /* Run in Acquisition Mode */

Modem response: O<CR> The user now must configure the Slave Modem (see next page). Once this configuration has been

done and the "ATM1" command activated, they acquire themselves and the Master Modem returns: S252=1<CR> /* Indicates Acquisition done */

:

26

User: AT0<CR> /* Run in Point-to-Point Mode */ Modem response: O<CR>

27

• Parameterization of the "Slav e" 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>

User: ATS201=0<CR> /* Choice of No. 1 Synchronization Frequency. */ Modem response: O<CR>

User: ATS202=10<CR> /* Choice of No. 2 Synchronization Frequency. */ Modem response: O<CR> User: ATS203=20<CR> /* Choice of No. 3 Synchronization Frequency. */ Modem response: O<CR> User: ATS204=30<CR> /* Choice of No. 4 Synchronization Frequency. */ Modem response: O<CR> User: ATS220=3<CR> /* Choice of Slave Mode. */

Modem response: O<CR> User: ATS250=0<CR> /* Indicates Uncoded Slave (No Personal Network No.).

*/

Modem response: O<CR> User: ATM1<CR> /* Runs in Acquisition Mode */

Modem response: O<CR>

At this time, the two Modems have to acquire themselves, and the Slave Modem sends:

Modem response: S250=1<CR>S252=1<CR> /* Indicates Acquisition

done */

User: AT0<CR> /* Runs in Security Transparent Mode */

Modem response: O < C R>

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:

• ATT0: Transfer of a pure carrier with the frequency chosen by the channel command.

• ATT1: Transfer of a modulated carrier '00'.

• ATT2: Transfer of a modulated carrier '01'.

• ATT3: Transfer of a modulated carrier '10'.

• ATT4: Transfer of a modulated carrier '11'.

NOTE: the character <CR> follows each command.

4.5. Utilization of WinB900

4.5.1. Hayes commands

The parameterization with the Hayes commands can be simply done with the W i nB900 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:

29

The top section allows the user to select the port to work on and describes the state of the serial link (speed, parity, etc.). The serial link state is not directly modifiable: It will follow the evolution of the values in S210 to S213 registers.

The bottom end sends Hayes commands. All the Registers are present with the content explanation for each of them.

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 window will display the sent command while the "Radio Module Response" window will display the B900SS response.

• If you want to write this register in the "Register Value" window, then click on the "Write" Button. The "Syntax" window will display the sent command while the "Radio Module Response" window will display the B900SS response.

" Read the Firmware Version: Select the "AT/V" option in the "Available

Commands", then click on the "Read" button. The "Syntax" window will display the sent command while the "Radio Module Response" will display the B900SS response.

" Read the Status Information: Select the "AT/S" option in the "Available

Commands", then click on the "Read" button. The "Syntax" window will display the sent command while the "Radio Module Response" window will display the B900SS response.

" Registers Reset to the default value: Select the "ATR" option in the "Available

Commands", then click on the "Read" button. The "Syntax" window will display the sent command while the "Radio Module Response" will display the B900SS response.

a register, click now on the "Read" button. The "Syntax"

in a register, indicate the value that you want to give to

31

4.5.2. Test Commands (Future software option – Not available at this time)

Carrier Transmission Tests can also be simply realized w ith 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:

• "Carrier Transmission" Selection

Through this window, it is possible to transmit several types of carrier to check the power and the signal modulation. Here are the following Carrier’s choices:

• Pure

• Modulated at ‘00’

• Modulated at ‘01’

• Modulated at ‘10’

• Modulated at ‘11’

Remark

:

If a transmission is in progress and you want to change the carrier type, it is imperative to stop the transmission before selecting another carrier, otherwise your change will not take effect

• "Radio Channel" Field

This Field available for input specifies the radio channel where the selected carrier will be transmitted from.

32

• "Transmission" B u t ton

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.

• "Quit" Button

This button returns to the Main Window.

33

Appendix

Appendix 1: Schemati c Block Diagram

AppendixAppendix

1: Schematic Block Diagram

1: Schematic Block Diagram 1: Schematic Block Diagram

RF Switch

902 MHz

Transmitter/

Receiver

PLL

MicroController

+

EEPROM Memory

RxD TxD

CTS RTS

Ack_Tx

Lock

Interface

34

Appendix 2: Mechanical Drawings

Appendix 2: Mechanical DrawingsAppendix 2: Mechanical Drawings

Drawing of the B900ss-20 Card

Interface Connector

(14FMS-1.0SP-TF

1 ° Connector Contact

)

(RTS)

Antenna Hot Point

Ground Antenna

(Cold Point)

1.57"

WARNING :

WARNING : In the "Rev. A" version of the card, the 1° connector contact of the J1 inter face

WARNING :WARNING : (corresponding to the RTS Sign al) is "below", as sh own on the schemat ic.

(corresponding to the RTS Sign al) is "below", as sh own on the schemat ic.

(corresponding to the RTS Sign al) is "below", as sh own on the schemat ic. (corresponding t o the RTS Signal) is "b elow", as show n on the schematic. In future ("Rev. B, Rev C, etc.” v er sions, the 1° connector contact of the J1 interface

In future ("Rev. B, Rev C, etc.” v er sions, the 1° connector contact of the J1 interface

In future ("Rev. B, Rev C, etc.” v er sions, the 1° connector contact of the J1 interface In future ("Rev. B, Rev C, etc.” v er sions, the 1° connector contact of the J1 interface (corresponding to the RTS Signal) will be "above", meaning on the opposite side of its actual

(corresponding to the RTS Signal) will be "above", meaning on the opposite side of its actual

(corresponding to the RTS Signal) will be "above", meaning on the opposite side of its actual (corresponding to the RTS Signal) will be "above", meaning on the opposite side of its actual position.

position.

position.position.

In the "Rev. A" version of the card, the 1° connector c ontact of the J1 interface

In the "Rev. A" version of the card, the 1° connector c ontact of the J1 interface In the "Rev. A" version of the card, the 1° connector c ontact of the J1 interface

1.71"

Interface Signals

Bus

Interface Function Signal

1 RTS

Or Data Out SPI (

2 Ack_Tx

Or Clock In SPI (

3 N.U. - 4 RXD I RxD UART - Serial Data Reception 5 CTS

Or Data In SPI (

6 TXD O TxD UART - Serial Data Transmission 7 VDD - 5 volts power for digital ("noisy").

8 LOCK O Network Synchronization O k.

9 RESET I External Reset. Also used during the programming of the Flash

10 GND - Ground 11 N.U. I -

12 N.U. I 13 N.U. I 14 N.U. I -

1

): SPI hardware only in slave. The user is connected to this bus only in Flash/EEPROM

(( Programming: In this case, the RESET signal has to be on. *I = Input O = Output

NOTE: The connector used is the 14FMS-1.0SP-TF 14-pin manufactured and distributed by

35

The Modem will communicate with the host through an interface with the following signals:

µC Function

direction

µC*

1

)

O RTS ! Request To Send

Data Out SPI ! Data out during the programming of the Flash Program.

1

)

I/O Ack_Tx ! Transmission Ok

Clock In SPI ! Clock In during the programming of the Flash Program.

1

)

I CTS ! Clear To Send

Data In SPI ! Data In during the programming of the Flash Program.

Program.

JST.

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.

RESET: Reset hardware of the modem card. Maxi mum Duration: 200 ms. Active

on low.

ACK_TX: Indicates that the buffer transmission has been executed correctly. This

signal is valid at the end of the transmission of a radio message (Active RTS Signal) and is kept until RTS returns to inactive. Active (buffer transmitted) on low.

xx SPI: Signals for the Flash or the EEPROM programming of t he Modem from

the host. There are three signals: Data In, Data Out and Clock.

When the host wants to read and/or modify the EEPROM, the modem

must absolutely be in reset by activating the RESET Signal.

CTS: Clear To Send: signal into the Modem. Indicates if the Modem can send

serial data to the User (Active on low) or not (Inactive on high).

RTS: Request To Sen d: signal going out of the Modem. Indic ates that the user

can transmit serial data (Active on low) or not (Inactive on high). This signal switches when the serial reception buffer's filling rate reaches a programmable threshold (S215) or when the user finished to transmit serial data (out on Time-Out).

TxD, RxD: Serial link signals in NRZ/TTL format. TxD is for the data going out

Modem while RxD is for the data coming into represented by high.

the Modem. Le logic '1' is

of the

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".

37

With:

Connector

Connector A (inch)

ConnectorConnector

14FMS-1.0SP-TF (14-pin) .511 .630

Connecting Cable Drawing

The associated cable should have the following dimensions:

A (inch) B (inch)

A (inch)A (inch)

B (inch)

B (inch)B (inch)

38

(g

Appendix 3: Ant

Appendix 3: Antenna Connection

Appendix 3: AntAppendix 3: Ant

"Cold" Point where to

connect the breading of the

cable

round).

enna Connection

enna Connectionenna 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.

"Hot" point where to

connect the cable core.

Coaxial Cable

connected to the

Appendix 4: D900SS

Appendix 4: D900SS----20 Demo Kit

Appendix 4: D900SSAppendix 4: D900SS

20 Demo Kit

20 Demo Kit20 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. In addition, Windows configuration and test software is included with the kit and allows

working with the radio module immediately. In a case, each D900SS-20 Demo Kit includes:

• Two metallic plates, with:

$ 2 900 MHz antenna, $ 2 B900ss-20 radio module, $ 2 interface cards connecting B900ss-20 and RS232,

• Two power supplies

• Two 9V batteries, allowing to manage without s ector during field tests,

• A CD-ROM including this document in PDF Format and the "WinB900" Tes t and

Configuration Software for Windows.

RS232

Version 1 Interface

Card

39

Radio Antenna

B900SS-20

Radio Module

On/Off Switch

8-24V Power Supply Jack

9 pin RS232 Sub-D Connector

40

Connections

Windows 95/98

PC and two Serial

Ports

COM2

Here is how to make the connections to the Demo Kit in order to operate them with the WinB900 Software:

COM1

Power Supply

No. 1 Radio Plate

(Master)

No. 2 Radio Plate

(Slave)

41

g

Appendix 5: Ti ming Diagr ams

Appendix 5: Ti ming Diagr amsAppendix 5: Ti ming Diagr ams

The user sends data

TxD

RTS

Radio

Ack_Tx

Lock

Serial Data

Active

active

If Slave, Master/Slave synchronization just ended correctly.

Stop on TimeOut Len

th<S215

inactive

Radio Transmission

Result: Error

Serial Data

Radio Transmission

Result: OK

inactive

Stop on CTS,

th ≥ S215

Len

Serial Data

Radio

CTS

RxD

42

The user Receives data

Data Reception

active

Data Reception

inactive

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. However, the basic radio operation (s ynchronization, si gnal lock, etc.) and the data trans mission on the radi o (with data reception on the serial link) continues to operate normally. On the other hand, if another modem sends a data frame on the radio, this radio fra me is not handled (and then not acknowledged). The Transmitter Modem considers this radio frame as lost and indicates it to the user. (Ack_Tx signal).

It would be better to avoid making the CTS inactive as much as possible.

Serial Data

43

Appendix 6: Description of the registers

Appendix 6: Description of the registersAppendix 6: Description of the registers

Registers used by the ‘AT’ protocol

This section shows a list of all the registers that configu re 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). Also, the parameter value will be read when sending the command 'ATSxxx?'.

These parameters are stored in the EEPROM memory a nd will be available as soon as powered up.

NOTE: Access Type: 'R' Read and/or 'W' Write.

Access

Type

R/W S200 No. of Used Frequency Table Between 0 and 8. When Table 0 is selected, the channels

R/W S201 First Frequency reserved for

R/W S202 Second Frequency reserved

R/W S203 Third Frequency reserved for R/W S204 Fourth Frequency reserved for

R S206 Dwell Timer Length Calculated based on the serial connection speed (S210), the

Register

Frequency Jump

the synchronization.

for the synchronization.

the synchronization. the synchronization.

Name Description

Frequency Jump

Frequency JumpFrequency Jump

remain the same and stay on the selected channel in S201 (used for the tests).

Default: 1.

Default: 1.Default: 1. Between 0 and 49. Has to be different from S202, S203 and S204.

Default: 0.

Default: 0.Default: 0. Between 0 and 49. Has to be different from S201, S203 and S204.

Default: 15.

Default: 15.Default: 15. Between 0 and 49. Has to be different from S201, S202 et S204.

Default: 30.

Default: 30.Default: 30. Between 0 and 49. Has to be different from S201, S202 et S203.

Default: 45.

Default: 45.Default: 45. buffer size (S215) and the Client Count (S253). Given in

milliseconds.

Default: 110 ms (38400 Bd/130 Bytes/1 client).

Default: 110 ms (38400 Bd/130 Bytes/1 client).Default: 110 ms (38400 Bd/130 Bytes/1 client).

44

Access

Type

Serial Link

R/W S210 Speed.

Register

Name Description

Serial Link

Serial LinkSerial Link

Indicates the speed on the Serial Connection '2': 2400 Baud. '3': 4800 Baud. '4': 9600 Baud. '5': 19200 Baud

'5': 19200 Baud (D efault)

'5': 19200 Baud'5': 19200 Baud

(Default).

(Default)(Default)

'6': 38400 Baud

R/W S211 Data Bits (*) Serial Link Data Bits.

'7': 7 bits. '8': 8 bits (Default).

'8': 8 bits (Default).

'8': 8 bits (Default).'8': 8 bits (Default).

R/W S212 Parity (*) Indicates Serial Link Parity Type:

'1': None (Default).

'1': None (Default).'1': None (Default). '2': Even. '3': Odd.

R/W S214 Serial Link Time Out Time_Out in milliseconds. Between 2 and 100 milliseconds.

Default: 5 ms.

Default: 5 ms.Default: 5 ms.

R/W S215 Buffer Size Indicates the maximum size of the fra mes that will be given to the

Modem. When this size is reached, the modem resets the CTS signal. It has to be inferior to the physical size of 130 Bytes. Default: 130 Bytes.

Default: 130 Bytes.

Default: 130 Bytes.D e fault: 130 Bytes.

(*): The parity control requires some constraints and the serial configuration described below can be reset:

S211

S211 S212

S211S211

S212 Description

S212S212

Description

DescriptionDescription 8 1 8 bits, no parity, 1 stop bit (8,N,1) 8 2 8 bits, even parity, 1 stop bit (8,E,1)

8 3 8 bits, odd parity, 1 stop bit (8,O,1) 7 2 7 bits, even parity, 1 stop bit (7,E,1) 7 3 7 bits, even parity, 1 stop bit (7,O,1)

45

Access

Type

Operation

Register

Name Description

Operation

OperationOperation

R/W S220 Server or Client Mode Indicates the operation of the Modem. When the Mod em is

configured as Master (or Server), the S252 Register switches automatically to 0xFF, while it switches to 0 when configured as Slave (or Client). '0' : Server (Network), '1' : Client (Network), '2' : Master, '3': Slave (Default).

'3': Slave (Default).

'3': Slave (Default).'3': Slave (Default).

R/W S221 Recovery Count Maximum recovery count in case of problems (Non-Ack

response to a message). If this Register is at 0, the frames are not checked and considered as still good (used for the tests). Default: 2.

Default: 2.

Default: 2.Default: 2.

PPPPersonal Network Control

R/W S250

ersonal Network Con trol

ersonal Network Con trolersonal Netw ork Control Number of Personal Network (or Network)

This register gives the Personal Network (Network) number on 2 Bytes. Only the two members of a same Personal Network can communicate with each other. Between 0 and 65535, it is at 0 when the modem is not reset. NOTE

: To reset the register to 0 also resets the S252 Regis ter to 0. Default: 0.

Default: 0.

Default: 0.Default: 0.

R S252 Modem Number Gives the Modem a unique number for a given Personal

Network. Number on one Byte is 0 when the Modem is not reset, 1 if it is a Slave, between 1 and 6 if it is a Client an d 255 if it is the Master. Default: 0.

Default: 0.

Default: 0.Default: 0.

R S253 Clients Count Gives the Client count of a Master Modem or a Server.

Default: 0.

Default: 0.Default: 0.

R/W S254 Client Addition Gives the number of a Client to be a dded in the already set

up network. This number should be between 1 and S253. Only used on a Network Server. Default: 0.

Default: 0.

Default: 0.Default: 0.

46

Appendix 7: Revisions History

Appendix 7: Revisions HistoryAppendix 7: Revisions History

No. of

No. of No. of

Revision

RevisionRevision

Date

Date Author

DateDate

Author Subject

AuthorAuthor

0.0 01/08/00 GS Document Creation

0.1 08/08/00 GS Modifications after YN reading.

0.2 28/08/00 GS Addition of Network Specifications. Serial configuration MAJ.

0.3 10/10/00 SP English Text, Diagrams and Clarifications

0.4 1/26/01 SP Added FCC Disclaimers (Pages 6 & 16)

0.5 1/31/01 SP Changed Channel Spacing from 200 kHz to 150 kHz (Page 6)

0.6 4/20/01 SP Consolidated FCC Disclaimers to Page 5 and various other miscellaneous corrections.

0.7 8/7/01 SP Added RF safety warning and removed antenna information per FCC request

Subject

SubjectSubject

Adcon Telemetry D900SS 20 A Users Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Chapter 1. Objective

Chapter 2. Module introduction

2.2.2. Specifications of the B900ss-20

• Radio part

• Digital Part

• Power Supply

Chapter 3. Basic Operation

The different fields and buttons are described below:

• "Sent Characters" Field

• "Received Characters" Field

• "Test Frames" Selection

• "Characters Count" Field

• Button: "Send"

• Button: "Continuous"

• Button: "Initialization"

• Button: "Stop"

• Button: "Quit"

• "Character Count Sent/Received" Fields

• "Elapsed time" Field

• "Sent/Received/Cor r up ted Count" Fields

• "Stop on Error" Selection

• "Network Number"

• "Client Number"

Chapter 4. Advanced Operation

4.2.2. Description of the standard commands

4.3.1. Acquisition of two Point-to-Point Modems

4.5.1. Hayes commands

• "Carrier Transmission" Selection

If a transmission is in progress and you want to change the carrier type, it is imperative to stop the transmission before selecting another carrier, otherwise your change will not take effect

• "Radio Channel" Field

• "Transmission" B u t ton

• "Quit" Button

Appendix 1: Schemati c Block Diagram

Appendix 2: Mechanical Drawings

Drawing of the B900ss-20 Card

Interface Signals

Connector Drawing

Connecting Cable Drawing

Appendix 3: Antenna Connection

Composition

Connections

Appendix 5: Ti ming Diagr ams

Appendix 6: Description of the registers

Registers used by the ‘AT’ protocol

Appendix 7: Revisions History