ESTeem Training Class Wireless Serial Overview

Serial Over Broadband Serial Interface on 195E products Serial Data Transferred Over Ethernet System – Configure Ethernet links first – Troubleshooting and diagnostic of WLAN network Serial Links are Transparent Two Modes of Operation – Point to Point – Multicast

Serial Interface Layout 12 VDC Input (Auxiliary Connector ) Reset Switch RS-232 Configuration RJ-45 10/100BaseT Ethernet Port Transmit LED Receive LED Status LED Power over Ethernet LED Aux Power LED RS-232 Data Port Second Ethernet Port

Serial Port Configuration Single Page Configuration on Setup – Data Rate, Parity, Start/Stop Bits – Transmission Characters – Data Format Multipoint System – All remote sites will receive the data – Set to multicast address Separate Networks with Port Number

Serial and Ethernet Networks Hybrid of Both Serial and Ethernet Interface Both Serial and Ethernet Network Can Work Simultaneously – Legacy systems – Adding in new locations to existing site – Providing video link on serial network Serial Network has Little Impact on Bandwidth

Theory Of Operation (Licensed) Narrow Band Packet Burst – Single Narrow Band Radio Channel – Carrier Sensed Multiple Access (CSMA) Listen before transmit Multiple users on one frequency – Collision Detection Fixed delay + random variable = time

Networking – Single Frequency Channel Model 192C/CHP/M/MHP/F – 1600 channels (12.5 kHz spacing) – 3200 channels (6.25 kHz spacing) – Up to 256 cells per channel Network ID Range 0 to 255 – 254 Users per cell Unit Address Range 1 to 254 per cell Theory Of Operation (Licensed)

Spectrum Utilization – Multiple frequencies available in band 20 kHz channel spacing in low band VHF 12.5 kHz or 5 kHz channel spacing in high VHF 25 kHz channel spacing - UHF (Grandfather) 12.5 kHz channel spacing - UHF (Current) 6.25 kHz channel spacing - UHF (?) – Simplex Radio Only one channel needed per site Theory Of Operation (Licensed)

Digi-Repeating – Store and Forward Data Transfer – Maximum of Three Repeaters in Any String – Acknowledge comes from destination ESTeem - not from first repeater Theory Of Operation (Licensed)

Add 30 Add 20 Add 50 Destination Add 10 Source 1st Repeater 2nd Repeater Add 40 3rd Repeater Data Digi-Repeating Diagram

Error Detection – Forward Error Correction Every 4th Bit is Error Correct – 32 Bit CRC – Retry Theory Of Operation (Licensed)

Noise Immunity High EMF Noise Rejection – Narrow Band FM – CSMA-CD Error Detection – Retry – Forward Error Correction Receiver Squelch – Narrow receiver band – Four level squelch

Packet Protocols Master/Master Communications – Any ESTeem can act as master – No dedicated Master/Slave relationship – Simplicity in maintaining spares No Token Packets – Transmit only when data to send – Opens up radio spectrum for multiple users

Data Privacy Network Privacy – Address 1 to 254 – Network ID 0 to 255 – Operating Frequencies 12.5 kHz 6.25 kHz

Data Privacy Network Privacy – Programming Lockout Codes Security ON/OFF – 0 to 65,536 – Data Rate 51 – Embedded Subcode Internal Firmware 0 to 255 – Total Combinations to Access Data 1 in 1.35 Trillion (1.35 E12)

Acknowledge Frame Start Flags Network Destination Address Source Address 32 Bit CRC Polynomial Start Flags Network Destination Address Source Address Data 1 to 2000 Bytes (8 to Bits) 32 Bit CRC Polynomial Frame Overhead: 64 to 118 bits Start Of Transmission Packlength Buffer Full Sendpack Character Received Termcontrol Timer Enabled and Timed Out End Of Transmission Transmitted Frame Packet Frame Block Diagram

ESTeem Block Diagram TXB2TXB1TX T/R RX BUFFER RX TX BUFFER SIZE = PACKLENGTH RX BUFFER SIZE = 4000 BYTES SERIAL INTERFACE USER DEVICE ESTEEM INTERNAL BLOCK DIAGRAM TX TXB1 TXB2 T/R RXRX BUFFER SERIAL INTERFACE USER DEVICE TX BUFFER SIZE = PACKLENGTH RX BUFFER SIZE = 4000 BYTES TX BUFFERS

Serial Interface DTE Vs. DCE – All ESTeem Wired DCE Serial Flow Control – Software Flow Control XON/XOFF in data stream – Hardware Flow Control Assertion of RTS and CTS lines

TXD2 RXD3 RTS4 CTS5 1GROUND 2TXD 3RXD 4RTS 5CTS 25-Pin Male Connector 25-Pin Male Connector Personal Computer ESTeem All Models NOTE: Connect only wires shown between pins. SIGGND7 DCD8 7SIGGND 8DCD DSR 6 6 Serial Interface RS-232C Interface – Standard DCE, RS-232C cabling – Maximum distance 50 feet (approx.)

1SHIELD GND 9 TX + 10 TX - 14 RX + 16RX - 25-Pin Male Connector ESTeem All Models Connect only wires shown between pins TX + TX - RX + RX- RS-422/485 Connection 1SHIELD GND Pin Male Connector ESTeem All Models + - Two Wire RS-485 Connection Pos Neg Pos Neg Serial Interface RS-422/485 Interface – Greater Distances (up to 4000 feet) – RS-485 for Multi-drop Serial Connections

Communication Interfaces Infrared Port (Model 192) – No Physical Connection Required – Serial Port Converter - Dongle ESTeem AA300 – 3 Foot Range

Effective Baud Rate – Transmitter Turn On Time – Packet Overhead Total of 15 ms (Model 192) – Effective Baud Rate Table Applicable to file transfer – Effected by number of repeaters and size of packets

Calculating Polling Time Packet Overhead – 15ms + Data (Bits)/19.2k Baud Each Transmission Total Packet Turn Around Time – 15ms+Data/19.2k+15ms (Ack) – Retry = 50ms

Calculating Polling Time Polling Time – Number of transmission in message plus overhead – Average retry rate

Polling Time Example Typical Read Message (10 Words) – Header 15ms+Data/19200 Baud = 23ms – Ack to Header 15ms – Read 15ms+Data/19200 Baud = 23ms – Ack to Read 15ms Conservative Estimate – Maximum of ten polls per second

Communication Schemes Point to Point – Two ESTeem network – Simple configuration

Master Remotes Communication Schemes Contention – Priority Messages Have Quickest Response – Possible Unknown Communication Loss at Remotes

Master Remotes Communication Schemes Polled – Well Organized Communication – Priority Messages Wait on The Poll

Master Remotes Emergency Message Communication Schemes Polled With Report By Exception – Combines the Advantages of Polled and Contention – Must Add Small Delay After Poll

Licensing Bringing Order to Frequency Spectrum Chaos Costs and File Times Depend on Coordinators Fees Licensing Assistance Offices – Approx. 6-8 Weeks for new license return from coordinator (temporary use) – Approx. $700-$1100 – Interim License As Fast As 4-6 Weeks

ESTeem Training Class Basic System Setup

Install ESTeem Utility Software – Windows™ Based – Setup – Diagnostic Programs – Programming – PC Terminal Emulation – Full Documentation

ESTeem Utility (Windows) Located on ESTeem Resource CD Auto-run Menu Select ESTeem Utilities Open Zip File to Install

Interfacing ESTeem to PC RS-232 Cable ESTeem Modem Personal Computer

Power Supply AA174 ESTeem Modem Molex Power Cord Male Molex Power Cord Female Power Supply Setup VDC Input - All Models Molex Power Connectors

Connecting Antenna Connect Coax Cable to Antenna Port on ESTeem Connect Antenna Element to Base Unit Mount Antenna Magnetic Base Antenna

Powering Up The ESTeem Place DC connector to ESTeem – No On/Off Switch Indications – Power LED = ON – Terminal Emulation Welcome Message Command Prompt (CMD:) – Modem Found on Starting Out ESTeem Modem Power LED

Using Infrared Port 9,600 Baud Only 3 Foot Range ESTeem Dongle - AA300 – Initialized with ESTeem Utility – Alt-I on keyboard Defaults Command Mode when Switch 8 (RS-232 Connector) = On – Must type Ctrl-C for Command Prompt

ESTeem Utility Program

ESTeem Setup

ESTeem Setup Guide – Familiarize Yourself With ESTeem Operations – Basic Programming and Description – Programming Wizard Format Express Setup – ESTeem Programming Without Descriptions Test Communications – Modem to Modem – Loopback

ESTeem Diagnostics

Measure Receive Signal Strength Radio Interference Testing Measure Data Quality Polling Diagnostic Testing – Save Results to File Read and Print Test Results

ESTeem Programming

Configure Modes and Features All Programming Commands In Users Manual In This Section Building An ESTeem Command List – PLC Emulation Configuration – Saving Program – Reading Program – Remote Programming

Terminal Emulation

Direct Communication with ESTeem Manual Programming and Communication Setting Frequency and Squelch – Finding Frequency and Squelch of attached ESTeem Function Keys – Custom Programming – Diagnostics

Additional Information All ESTeem Documentation Contained on CD- ROM Disk – Manuals – Technical Bulletins – Engineering Reports About – Lists current Utility version