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Agilent Technologies U2781A User Manual

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Agilent U2781A
USB Modular
Instrument Chassis
User's Guide
Agilent Technologies

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Summary of Contents for Agilent Technologies U2781A

  • Page 1 Agilent U2781A USB Modular Instrument Chassis User’s Guide Agilent Technologies...

  • Page 2: Trademark Acknowledgements

    Notices © Agilent Technologies, Inc. 2006 - 2011 No part of this manual may be reproduced in any form or by any means (including elec- tronic storage and retrieval or translation into a foreign language) without prior agree- ment and written consent from Agilent Technologies, Inc.

  • Page 3: Safety Information

    Failure to comply with these precautions or with specific warnings elsewhere in this manual violates safety standards of design, manufacture, and intended use of the instrument. Agilent Technologies, Inc. assumes no liability for the customer’s failure to comply with these requirements.
  • Page 4 • Always use dry cloth to clean the device. Do not use ethyl alcohol or any other volatile liquid to clean the device. • Do not permit any blockage of the ventilation holes of the device. U2781A User’s Guide...
  • Page 5 “Monitoring and Control Instrument” product. The affixed product label is shown as below: Do not dispose in domestic household waste To return this unwanted instrument, contact your nearest Agilent office, or visit: http://www.agilent.com/environment/product for more information. U2781A User’s Guide...

  • Page 6: Getting Started

    In This Guide… Getting Started chassis, the product outlook and dimension. This chapter also contains instructions on how to get started with the U2781A USB modular chassis. Features and Functions features and functions of the U2781A USB modular instrument chassis.
  • Page 7 This DoC applies to above-listed products placed on the EU market after: 19-Dec-2006 Date For further information, please contact your local Agilent Technologies sales office, agent or distributor, or Agilent Technologies Deutschland GmbH, Herrenberger Straße 130, D 71034 Böblingen, Germany. Template: A5971-5302-2, Rev. B.01 U2781A User’s Guide...
  • Page 8 This ISM device complies with Canadian ICES-001. Cet appareil ISM est confomre à la norme NMB-001 du Canada. Regulatory Information for Australia/New Zealand This ISM device complies with Australian/New Zealand AS/NZS 2064.1 VIII – Group 1 Class A Performance Criteria U2781A User’s Guide...

  • Page 9: Table Of Contents

    Contents U2781A User’s Guide Getting Started Introduction Product Overview Product Outlook Dimensions Standard Purchase Items Checklist Installations and Configurations General Maintenance Features and Functions Introduction USB Backplane Trigger Bus (TRIG [0..7]) External Trigger Out External Trigger In (Star Trigger) Simultaneous Synchronization (SSI) Single Master–multiple Slaves...
  • Page 10 Block diagram of Trigger Bus (TRIG [0..7]) and Trigger Out Block diagram of the 10 Mhz Reference Clock and External Trigger Synchronization between modules in the chassis Single Master–multiple Slave triggering with DAQ Single Master–multiple Slave triggering U2781A User’s Guide...
  • Page 11 Figure 2-7 Figure 2-8 Figure 2-9 U2781A User’s Guide Multiple Master–multiple Slave triggering Block diagram of temperature monitoring and fan control Identifying modules location Contents...
  • Page 12 Pin information of SSI connector Trigger out bits for U2300A, U2500A, and U2600A Series DAQ devices Example of configurations for single Master-multiple Slaves using DAQ and U2700A Series modular products. Example of configurations for multiple Master–multiple Slaves U2781A User’s Guide...
  • Page 13 Standard Purchase Items Checklist Installations and Configurations General Maintenance This chapter provides an overview of the U2781A USB modular instrument chassis, the product outlook and dimension. This chapter also contains instructions on how to get started with the chassis from the installation of...

  • Page 14: Introduction

    Getting Started Introduction The U2781A USB modular instrument chassis is a 4U height chassis with six USB module slots. It is a portable chassis with high performance added value. It targets a wide range of applications in both industrial and scientific environments. It helps to lower cost of test and accelerate your test system integration and development.

  • Page 15: Product Overview

    Product Overview Product Outlook Front View Module L-Mount Kit Rear View Trigger In USB Port Trigger Out Ext 10 MHz AC Input U2781A User’s Guide Getting Started Bumper ON/OFF switch...

  • Page 16: Dimensions

    Getting Started Dimensions 197.00 mm 270.00 mm 271.20 mm U2781A User’s Guide...

  • Page 17: Standard Purchase Items Checklist

    Standard Purchase Items Checklist Inspect and verify the following items for the standard purchase of U2781A USB modular instrument chassis. If there are missing items, contact the nearest Agilent Sales Office. ✔ ✔ ✔ ✔ ✔ ✔ U2781A User’s Guide...

  • Page 18: Installations And Configurations

    Agilent Measurement Manager, follow the step- by- step instructions as shown in the Agilent USB Modular Products and Systems Quick Start Guide. You need to install IVI-COM driver before using the U2781A Series with N O T E Agilent VEE, LabVIEW or Microsoft Visual Studio.

  • Page 19: General Maintenance

    1 Power off the chassis device and remove the power cord and I/O 2 Shake out any dirt that may have accumulated inside the 3 Wipe the chassis with a dry cloth. U2781A User’s Guide cable from the chassis. chassis device.
  • Page 20 Getting Started U2781A User’s Guide...
  • Page 21 Multiple Master–multiple Slaves Simultaneous Synchronization (SSI) Chassis Temperature Monitoring Fan Speed Monitoring Identifying Modules Location Geographical Address Modules Identification This chapter provides information for better understanding of the features and functions of the U2781A USB modular instrument chassis. Agilent Technologies...

  • Page 22: Features And Functions

    The modular chassis allocates housing for six USB modules with built- in power supply. The USB backplane provides a means to synchronize the modules. The key features of the U2781A USB modular instrument chassis are as follows: • Simultaneous Synchronization (SSI) •...

  • Page 23: Usb Backplane

    USB Backplane U2781A User’s Guide 55-Pin Backplane Connector Pins Configuration +12V +12V +12V +12V +12V +12V LBL0 BRSV LBL1 LBL2 LBL3 LBL4 STAR TRIG LBL5 LBL6 CLK10M LBL7 Table 2-1 Pin information of SSI connector SSI timing signal Functionality +12V...

  • Page 24: Figure

    Features and Functions Figure 2-1 USB backplane block diagram U2781A User’s Guide...

  • Page 25: Trigger Bus (Trig [0

    Trigger Bus (TRIG [0..7]) U2781A User’s Guide Trigger Bus (TRIG [0..7]) is an 8- bit digital bus connected from slot 1 to slot 6 to synchronize different USB modules. This trigger bus enables the USB modules of passing trigger signals to one another.

  • Page 26: External Trigger Out

    Table 2-2 Trigger out bits for U2300A, U2500A, and U2600A Series DAQ devices Trigger Out Bit-0 Bit-1 Bit-2 Bit-3 Bit-4 Bit-5 Bit-6 Bit-7 by means of a multiplexer. Function Time base Reserved Reserved A/D trigger Reserved Reserved Reserved D/A trigger U2781A User’s Guide...

  • Page 27: External Trigger In (Star Trigger)

    External Trigger In (Star Trigger) Star Trigger Bus U2781A User’s Guide The star trigger bus offers a very high performance or precise synchronization between modules. The star trigger bus is a dedicated trigger line between the External Trigger Input and USB slots. This trigger signal is sent from external to each slot through a 1- to- 6 CLK buffer.

  • Page 28: Simultaneous Synchronization (Ssi)

    (TRIG [0..7]). SLAVE modules will then receive the signal and begin synchronization with MASTER module. There are two SSI configuration modes available — single Master–multiple Slaves and multiple Masters–multiple Slaves. Figure 2- 4 U2781A User’s Guide...

  • Page 29: Features And Functions

    Connectors Connectors Connectors SSI Trigger Bus Chassis SLAVE module 1 SLAVE module 1 SLAVE module 2 SLAVE module 2 SSI Signals SSI Signals FPGA FPGA 55-pin 55-pin Connectors Connectors Figure 2-4 Synchronization between modules in the chassis U2781A User’s Guide...

  • Page 30: Single Master-Multiple Slaves

    MASTER and others as SLAVE through AMM. Alternatively, users can also set this configuration using the SCPI commands. Refer to U2300A, U2500A, and U2600A Series DAQ Programmer's Reference. Figure 2-5 Single Master–multiple Slave triggering with DAQ U2781A User’s Guide...
  • Page 31 Series modular devices can only be configured as Slave to receive the event of the signal as shown in Table 2- Figure 2-6 Single Master–multiple Slave triggering Table 2- 3 shows some examples of supported and not supported configurations. U2781A User’s Guide...
  • Page 32 Slot 6 U2722A S = T7 S = T0 – T7 S = T1 None None S = T0 – T7 S = T2 None S = T2 None S = T1 None S = T0 None U2781A User’s Guide...

  • Page 33: Multiple Master-Multiple Slaves

    This configuration is only supported by U2700A Series modular products. Figure 2-7 Multiple Master–multiple Slave triggering Table 2- 4 shows some examples of supported and not supported configurations. Example of configurations for multiple Master–multiple Slaves. U2781A User’s Guide...
  • Page 34 Slot 5 & Slot 6 U2751A U2722A None S = T0 None S = T1 None S = T1 None S = T1 None * (In) None S = T0 None S = T4 None S = T1 None None U2781A User’s Guide...

  • Page 35: System Reference Clock

    System Reference Clock U2781A User’s Guide The 10 MHz reference clock can come from two sources; internal backplane oscillator and external clock source. The internal oscillator on the USB backplane supplies an independent 10 MHz system reference clock to each of the USB slot.

  • Page 36: Chassis Temperature Monitoring

    USB device through an I illustrated in following figure. Figure 2-8 Block diagram of temperature monitoring and fan control The SCPI command below queries the temperature reading from the sensors in degree Celsius (°C): SYSTem:TEMPerature? {1|2} C interface as U2781A User’s Guide...

  • Page 37: Fan Speed Monitoring

    Fan Speed Monitoring U2781A User’s Guide The U2781A USB modular instrument chassis is also integrated with a fan speed control circuit. It is used to monitor the fan status and speed. The control circuit communicates with backplane USB device via I...

  • Page 38: Identifying Modules Location

    To read the geographical address of each module, the SCPI command below is used: SYSTem:CDEScription? You may have more than one module or chassis connected to the same host PC. The following figure illustrates an example of the connection. U2781A User’s Guide...
  • Page 39 N O T E U2781A User’s Guide Figure 2-9 Identifying modules location To identify the location of the modules, a pre- configuration setting is needed before the synchronization or triggering event begins. Follow the steps below: 1 Send the following command to the modular chassis to trigger it.
  • Page 40 5 Prior to any triggering activities, you must stop the configuration activity by sending the following command: SYSTem:IDentity {0|OFF} process of acquiring data. Agilent Measurement Manager software. You are only required to press the “Refresh” button. U2781A User’s Guide...
  • Page 41 Agilent U2781A USB Modular Instrument Chassis User’s Guide Characteristics and Specifications Product Characteristics Electrical Specifications Mechanical Specifications This chapter specifies the characteristics, environment conditions, and specifications of the U2781A USB modular instrument chassis. Agilent Technologies...

  • Page 42: Product Characteristics

    • CANADA: ICES-001: 1998 • Australia/New Zealand: AS/NZS 2064.1 ACOUSTIC EMISSION • Sound pressure level: 45.5 dB(A) • Sound power level: 56.6 dB(A) SHOCK & VIBRATION Tested to IEC/EN 60068-2 DIMENSION (WxDxH) 270.00 mm x 271.20 mm x 197.00 mm U2781A User’s Guide...
  • Page 43 • Three months for the product's standard accessories, unless otherwise specified Please take note that for the product, the warranty does not cover: • Damage from contamination • Normal wear and tear of mechanical components • Manuals 1 Compatible with Microsoft Windows operating systems only. U2781A User’s Guide...

  • Page 44: Electrical Specifications

    10 MHz 100 mVpp to 5 Vpp (sine/square wave) 50 Ω ± 5 Ω 10 Vrms 2.0 V 0.8 V 8 ns pulse width 0 to 5.0 V 350 ps 2.9 V 0.1 V 0 to 3.3 V U2781A User’s Guide...

  • Page 45: Mechanical Specifications

    Mechanical Specifications U2781A User’s Guide Physical Layout Number of USB module slots Dimension of each module slot Dimension of chassis Weight Power LED USB Backplane Connector Input signals Output signal Cooling Fan Number of fans Fan speed Noise Power (each fan) Characteristics and Specifications 25.40 mm (W) x 174.54 mm (D) x 105.00 mm (H)
  • Page 46 Characteristics and Specifications U2781A User’s Guide...
  • Page 47 (tel) (65) 6375 8100 (fax) (65) 6755 0042 Or visit Agilent world wide web at: www.agilent.com/find/assist Product specifications and descriptions in this document subject to change without notice. © Agilent Technologies, Inc. 2006 – 2008 Printed in Malaysia Fifth Edition, November 8, 2011 U2781-90003 Agilent Technologies...

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