CONTROL MONITOREO Y ALMACENAMIENTO MEDIANTE LABVIEWTM DE VARIABLES

CONTROL, MONITOREO Y ALMACENAMIENTO MEDIANTE LABVIEWTM DE VARIABLES DE INTERES PROVENIENTES DE LOS INSTRUMENTOS DE MEDICION: COMMUNICATIONS PERFORMANCE ANALYZER HEWLETT PACKARD OMNIBER 37717 C DIGITIZING OSCILLOSCOPE TEKTRONIK TDS 520 A Luis Aguilar (UNEXPO) luishaguilar@esmartweb. com Alejandro Martinez (PDVSA) martinezaae@pdvsa. com

1. STANDARD GPIB 2. INSTRUMENTACIÓN VIRTUAL 3. CONTROL DE INSTRUMENTOS 4. PRESENTACIÓN DE CASO REAL

Late 1960 s Hewlett-Packard developed a bus to connect and control their programmable instruments. But the need arose for a standard, high-speed interface so that instruments and controllers from various vendors could communicate. 1975 IEEE Society published ANSI/IEEE Standard 488 - 1975, IEEE Standard Digital Interface for Programmable Instrumentation • Electrical, mechanical, and functional specifications • Bus is known by the names GPIB, HP-IB, and IEEE 488 bus 1978 The original IEEE 488 - 1975 document was revised for editorial clarification and addendum. 1987 IEEE 488. 2, Codes, Formats, Protocols, and Common Commands • Enhances system compatibility and configurability • Builds upon IEEE 488. 1, but does not replace it 1990 Standard Commands for Programmable Instrumentation (SCPI) • Specific command set for each instrument class • Instrument interchangeability

• Eight data lines • Five interface management lines • Three handshake lines

• Maximum separation of 4 m between any two devices and an average separation of 2 m over the entire bus. • Maximum cable length of 20 m. • Maximum of 15 devices connected to each bus, with at least two-thirds of the devices powered on. • You can use National Instruments GPIB extenders and expanders to exceed these limits.

• Only one Controller-In-Charge on the GPIB at a time • Primary responsibilities of a Controller are: – Defining the communication links – Responding to devices requesting service – Sending GPIB commands – Passing/receiving control

• Talkers – Are instructed by the Controller to talk – Place data on the GPIB – Only one device is permitted at a time by the Controller to talk • Listeners – Are instructed by the Controller to listen – Read data that the Talker places on the GPIB – Several devices are permitted by the Controller to be Listeners at the same time

• The GPIB features different configurations for connecting devices. • The GPIB consists of eight data lines (with grounds), five bus management lines, and three handshaking lines. • There is always one bus Controller that dictates all bus activity. The Controller sets up devices as Talkers and Listeners. • There are command data messages on the GPIB. Command messages are for bus-specific commands, whereas data messages contain only data. • Every device on the GPIB has a primary GPIB address that the Controller uses to control which devices send or receive data. • There are three methods for terminating communication on the GPIB – EOI, EOS, count, or any combination of the three.

Flexibility PC TV Radio 25 0 50 75 10 0 Clock Time PC Based Virtual Instrumentation has become the new methodology for instrumentation

Stand Alone Instrument Vendor Defined PC Based Instrument User Defined

Acquisition Analysis User Interface INSTRUMENT Signal Routing and Conditioning DAQ Boards IEEE 488 (GPIB) Calculate VXI Hard Copy File I/O RS-232 Format Trigger Control Presentation Interprocess Communication Networking

• Industry-standard components • Flexible • Scalable • Connectivity • Compatibility • Increased productivity • Reduced cost

• Graphical Programming for Virtual Instrumentation – front panel graphical user interfaces – graphical block diagram source code – compiler for optimized execution • Standalone executables for easy distribution

1998 Lab. VIEW 5 1996 Lab. VIEW 4 1994 Lab. VIEW for HP-UX Add-On Toolkits September 1992 Lab. VIEW for Windows Lab. VIEW for Sun April 1990 U. S. Patent February 1990 U. S. Patent January 1990 Lab. VIEW 2 October 1986 Lab. VIEW 1 April 1983 Lab. VIEW Concept • 1998 - Lab. VIEW 5 • – Multithreading, VI Server, Active. X, Undo, Wizards • 1996 - Lab. VIEW 4 • – Customizable interface • 1994 - Lab. VIEW 3 • – Lab. VIEW for HP-UX • – Add-On Toolkits • 1992 - New operating systems • – Microsoft Windows, Open. Windows, X Windows • – Introduction on other platforms • 1990 - Lab. VIEW 2 • – Mature product -- four years of customer feedback • – Compiler to match industry needs • 1986 - Lab. VIEW 1 • – Introduced innovative approach to programming • – Macintosh only possible platform • 1983 - Lab. VIEW concept • – Search for instrumentation software solution • – Virtual instrument concept

• Platform neutral • Leverage common technology • Migrate applications between platforms • Also available on Concurrent Power. MAX

Hardware and Driver Software Acquisition and Control PC or Workstation Lab. VIEW Software Analysis and Presentation DAQ Products Serial Instruments Process GPIB Instruments Unit Under Test VXI Instruments Other networked computers

Acquisition Analysis Presentation IEEE 488. 2 controllers Signal generation GUI Plug-in data acquisition boards Digital filters Strip charts Smoothing windows Graphs VXI controllers Statistics Hardcopy Software for RS-232 instruments DSP hardware File I/O Hi. Q (Post analysis and report generation) Lab. VIEW, Lab. Windows/CVI, and Component. Works

• Create and analyze Tributary PDH rates • Ability to Map PDH into SDH • Check correct channel assignment in TU groups • Ability to Demap PDH out of SDH • Transmit and Receive PDH rates

• Affordable – Does all SDH installation & maintenance tests • Watch for hidden future costs (Upgrade vs Overhaul) • Ease of Use – Includes productivity features that simplify operation • Auto. Scan • Pass/Fail Test • Trouble. Scan • Graphical Measurement Histograms • Configurability – Allow additional capabilities when needed • Standard tributaries (2 Mb, . . . ) • New tributaries (ATM, . . . ) • Other capabilities (Jitter, . . . )

• Remote Control – Serial – GPIB – Ethernet • Automated/Network Control • Data Analysis • Data Storage

• Leveraging computer technology – Adaptability – Latest technology • Creating open systems – Freedom of choice – Integration • Delivering true productivity – Flexibility – Performance

• Empowering technology – Natural design notation – Eliminates syntactical details • Reduced development time – Readability – Self-documenting • Reusability – Modularity – Top-down and bottom-up design Low-Level Diagram Low-Level Panel Top-Level Block Diagram Top-Level Front Panel

• Pure graphical programming – Robustness – Consistent methodology • Programming structures – Intuitive – Scalable • Compiled language – Performance – Executables

C Established Programming Standard Widespread Knowledge Base Instrumentation Libraries Standard Coding Conventions Source Code Control Intuitive GUI Dynamic-Link-Libraries (DLLs) Dynamic-Data-Exchange (DDE) Extended Memory Common Resources Networking

Standard ANSI C Programming Interactive Development Tools Analysis GUIs Instrument Drivers Networking Serial DAQ GPIB VXI

• CD-ROM from Instrument Library Developer Program • Internet/WWW – ftp@ni. com – www. ni. com • Contact National Instruments office

• Sophisticated, Direct Sales/Support • U. S. – more than 30 offices covering all 50 states International – more than 25 offices • Manufacturing/R&D • Austin, TX Corporate Headquarters • Employees • U. S. – more than 800 employees International – more than 200 employees • Extensive Product Lines • More than 600 products

TEKTRONIK DIGITIZING OSCILLOSCOPE TDS 520 A HEWLETT PACKARD COMMUNICATIONS PERFORMANCE ANALYZER OMNIBER 37717 C HEWLETT PACKARD FUNCTION GENERATOR 3312 A LAPTOP COMPAQ ARMADA M 700 TARJETA Y CABLE NATIONAL INSTRUMENTS PCMCIA-GPIB HEWLETT PACKARD GPIB CABLE 10833 A

LABVIEW 7. 0 MEASUREMENT & AUTOMATION EXPLORER 3. 0. 2 NI 488. 2 1. 70 NI VISA 3. 0. 1 DRIVERS Y LIBRERIAS DE LOS INSTRUMENTOS

• SDH/SONET/PDH/ATM/Jitter Test Set Platform • Opts: USS, A 3 B, UKN, UKJ, A 3 K, A 3 N, 130, 120, UH 4 • Dual SONET/SDH Interfaces • Dual 1310, 1550 nm Optics Installed • HPIB, RS 232, LAN, Parallel Interfaces HP 37717 C Omni. BER 717 Communications Performance Analyzer Agilent's Omni. BER 717 communications performance analyzer offers a single-box, field-portable multi-rate tester to 622 Mb/s for installation, maintenance, and commissioning of hybrid PDH/SONET and ATM transport networks and network equipment. Omni. BER 717 can be configured as a dual standard SONET/SDH analyzer for BER and jitter tests, which makes it the ideal tool for testing network equipment in a manufacturing environment. The dual SONET/SDH capability along with comprehensive remote control of the instruments rich feature set means that production lines can be rapidly reconfigured to test either SONET or SDH.

• 500 MHz maximum analog bandwidth. • 1 Gigasample/second maximum digitizing rate • 500 Megasamples/second maximum digitizing rate • Four-channel acquisition, two full-featured channels and two channels with limited vertical scale selections: 100 m. V, 1 V, and 10 V. Tektronik TDS 520 A Digitizing Oscilloscope • Waveform Math — Invert a single waveform and add, subtract, multiply, and divide two waveforms. • Up to 15, 000 -point record length per channel (50, 000 point optional). • Full GPIB software programmability. Hardcopy output using RS-232 or Centronics ports

OMNIBER 37717 C TDS 520 A APLICACIÓN DE LABVIEW PARA EL CONTROL, MONITOREO Y ALMACENAMIENTO

DESCARGA E INSTALACION DE LOS SIGUIENTES DRIVERS: 37717 C Lab. View Driver 37717 C Driver: VXIplug&play A. 07. 00

CONEXIÓN EN CASCADA DE LOS INSTRUMENTOS PCMCIA-GPIB CABLE DIRECCIONAMIENTO GPIB EN CADA INSTRUMENTO GPIB CABLE

VXI PLUG & PLAY Y LABVIEW DRIVERS PRUEBAS DE COMUNICACIÓN CON LOS INSTRUMENTOS GPIB

DRIVERS PROGRAMACION EN LABVIEW DISEÑO GRAFICO DE PANEL FRONTAL APLICACIÓN EN LABVIEW PARA EL CONTROL Y MONITOREO DEL INSTRUMENTO

2 7 4 5 1 3 8 6

1. Mostrar las formas de onda por pantalla 2. Mostrar tipos de mediciones 3. Selección de medición a realizar 4. Selección del canal 5. Variación de escala vertical 6. Variación de escala horizontal 7. Variación de posición vertical 8. Variación de posición horizontal

1 4 2 14 3 9 13 10 6 12 8 5 7 11

1. Restricciones de acceso al programa y sus funciones mediante password 2. Auto setup del instrumento (lo habilita para trabajar en modo remoto) 3. Comienzo y/o finalización de la medición 4. Selección de señal de transmisión y recepción 5. Tipos de señales 6. Muestra la función de “Activar Alarmas” 7. Muestra la alarma “LOS” 8. Genera una alarma del tipo “LOS” 9. Muestra los resultados de las mediciones en pantalla 10. Muestra un histórico con posibles alarmas anteriores 11. Imprime un reporte con los resultados y también crea y guarda un documento en Excel con los mismos 12. Deshabilita el modo remoto 13. Genera un error sencillo 14. Leds indicadores de alarmas