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Jupiter Instruments JI-820 User Manual

Incremental encoder emulator
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Incremental Encoder Emulator
Jupiter Instruments
JI-820
Model JI-820

User Manual

1
Version 1.1
5/20/2018 Edition
5/18/18

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Summary of Contents for Jupiter Instruments JI-820

  • Page 1: User Manual

    Model JI-820 Incremental Encoder Emulator User Manual Version 1.1 Jupiter Instruments 5/20/2018 Edition JI-820 5/18/18...

  • Page 2: Table Of Contents

    Jupiter Instruments_____________________________________________________________________________________ TABLE OF CONTENTS INTRODUCTION BLOCK DIAGRAM JI-820 Block Diagram FRONT AND REAR PANELS Front Panel 3.0.1 D-Sub Connector Signals Rear Panel SOFTWARE INSTALATION Software Installation 4.1.1 USB Driver Installation 4.1.2 Control Software Installation Software Check JI-820 CONTROL APPLICATION...
  • Page 3 Jupiter Instruments_____________________________________________________________________________________ Thirty-Day Return Policy Limitation of Liability Contact Us JI-820 2/18/18...

  • Page 4: Introduction

    Jupiter Instruments_____________________________________________________________________________________ 1. INTRODUCTION The JI-820 is a flexible, easy-to-use, PC controlled instrument designed to precisely emulate the function of a wide variety of incremental encoders. It provides the design, system, or test engineer with a tool to accurately emulate encoder signals generated by motion control and industrial monitoring systems.

  • Page 5: Block Diagram

    Jupiter Instruments_____________________________________________________________________________________ 2. BLOCK DIAGRAM 2.0 JI-820 Block Diagram D-sub, 9-Pin Ext. Voltage FPGA USB PHY Connector Activity Status Figure 2.1 JI-820 Block Diagram JI-820 2/18/18...

  • Page 6: Front And Rear Panels

    3. FRONT AND REAR PANELS 3.0 Front Panel Description and location of Front Panel Connector and LEDs is shown below. 1. Power – Power-on LED (Green). Also indicates JI-820 device has been enumerated. 2. D-Sub Connector: 9-Pin, Female Socket, (AMP L77SDE09SA4CH4R) Suggested Mating Connector (AMP DE09P065H TXLF) Output –...

  • Page 7: D-Sub Connector Signals

    Voltage Range: 5.0 to 30.0V Output Z (Index) Encoder Signal Output A Encoder Signal Output B Encoder Signal GND – signal return GND – signal return Output Inverted Z (Index) Encoder Signal Output Inverted A Encoder Signal Output Inverted B Encoder Signal JI-820 2/18/18...

  • Page 8: Rear Panel

    Jupiter Instruments_____________________________________________________________________________________ 3.1 Rear Panel Rear Panel shown below. USB Connector: Type ‘B’, (Molex 67068-0000) Suggested USB Cable (Molex 88732-9200) JI-820 2/18/18...

  • Page 9: Software Instalation

    Jupiter Instruments_____________________________________________________________________________________ 4. SOFTWARE INSTALATION 4.1 Software Installation A USB driver as well as JI-820 Control software will be installed on the host PC. Step-by-step installation instructions are as follows: 4.1.1 USB Driver Installation a. Host PC with an Internet Connection 1.

  • Page 10: Control Software Installation

    4. Control installation is now complete. 4.2 Software Check 1. Using the USB cable that was included with your purchase, connect the JI-820 unit to a USB port on the host PC. 2. Verify that the front panel Power LED (green) is on.
  • Page 11 Jupiter Instruments_____________________________________________________________________________________ Figure 4.3-1 JI-820 Control Application Main Window 5. At the main window, verify that a JI-820 device is available then open the USB port by clicking the Connect button at the bottom right corner of pane. JI-820 2/18/18...
  • Page 12 Version: A, VHDL Version: 3, etc.) If a question mark (HW Version: ?, or VHDL Version: ?) or some other character appears, an error has occurred. Figure 4.3-2 JI-820 About Window 9. If no errors have occurred (or if errors have been resolved) the Software Check is complete.

  • Page 13: Ji-820 Control Application

    5. JI-820 CONTROL APPLICATION 5.0 Main Window The JI-820 Control Application Main Window is shown in figure 5.0-1. Figure 5.0-1. JI-820 Control Application Main Window 1. Encoder Rate – Quadrature encoder rate is entered as a Cycle Frequency, Cycle Period, or RPM.
  • Page 14 6. Encoder Position – The current position of the encoder is displayed both numerically and visually (Rotary Position) 7. Signal State – The current state of the output signals (A, B, Z) is displayed here. 8. USB Connection – Connected/Disconnected a JI-820 device to the application. JI-820 2/18/18...

  • Page 15: Setup Menu

    5.1-1. To access the Setup menu, click Setup followed by Setup Menu at the Main Window menu bar. Figure 5.1-1 JI-820 Control Application Setup Menu 1. Encoder CPR/PPR – The encoder Cycles-Per-Revolution (CPR) or Pulses-Per- Revolution (PPR) parameter is entered here.
  • Page 16 Update check box is checked. For example, changes in A, B, and Z signal amplitude can be observed in real-time using Immediate Update. 5. Signal Timing – This is a visual representation in time of all 3 encoder signals (A,B,Z) JI-820 2/18/18...

  • Page 17: System Exercise

    6. Set amplitude for all three oscilloscope channels to 10V/div. 7. Set sweep speed to 50us/div. 8. Set trigger to Normal, Rising-Edge, Channel 3. 9. Finally, using the supplied USB cable, connect the JI-820 to a spare USB port on the PC. Figure 6.0-1 Test Setup JI-820...
  • Page 18 1. Launch the application by double clicking on the JI-820 icon. 2. At the main window, verify that a JI-820 device is available then open the USB port by clicking the Connect button at the bottom right corner of pane.
  • Page 19 1. At the main window, set the Cycle Frequency to 10K Hz. Cycle Frequency is found in the Encoder Rate group box. 2. At the Output Signals group box, enable the output signals A, B, and Z. 3. Finally, start encoder operation by clicking run in the Operations group box. JI-820 2/18/18...
  • Page 20 5. At the oscilloscope, increase the sweep speed to 20uS/div. Verify the following waveform on the oscilloscope. 6. At the main window, change encoder rotation direction from CW to CCW by selecting CCW in the Rotation Direction group box. JI-820 2/18/18...
  • Page 21 Jupiter Instruments_____________________________________________________________________________________ 7. At the oscilloscope, verify the following waveform. Note that the phase sequence has changed from 1,2,3,4 to 4,3,2,1. JI-820 2/18/18...
  • Page 22 Jupiter Instruments_____________________________________________________________________________________ 8. While running, experiment with the encoder behavior and configuration by making changes to: • Cycle Frequency • Z Signal • Polarity • Rising/Fall Edge positions • Signal Amplitude 9. Encoder emulation exercise is now complete. JI-820 2/18/18...

  • Page 23: Ji-820 Specifications

    Jupiter Instruments_____________________________________________________________________________________ APPENDIX A 1.0 JI-820 Specifications Incremental Encoder Emulator Model JI-820 Jupiter Instruments Ver 1.2 Electrical Specifications 1/21/2018 Edition General Signals A, /A, B, /B, Z, /Z Cycles per Revolution (CPR) Programmable: 1 to 1,00,000 Pulses per Revolution (PPR)
  • Page 24 Pin 8 = /A Pin 9 = /B LEDs Power Power-On Activity Output Signal Activity PC Interface Communication USB 2.0 Full Speed Connector Standard type B socket Power USB supplied Current Draw: 270mA (Nominal) 690mA (Maximum @ max. signal load) JI-820 2/18/18...
  • Page 25 Jupiter Instruments_____________________________________________________________________________________ Mechanical and Environmental Specifications Mechanical Dimension 3.3" x 1.1" x 5.0" (WxHxL) Weight 0.2lbs Construction Extruded Aluminum Enclosure Environmental Operating Temp 0C to 45C Storage Temp -20C to 70C JI-820 2/18/18...

  • Page 26: Specifications: Incremental Encoder Example

    Jupiter Instruments_____________________________________________________________________________________ APPENDIX B 1.0 Specifications: Incremental Encoder Example JI-820 2/18/18...

  • Page 27: Minimum Pc System Requirements

    APPENDIX C Minimum PC System Requirements Microsoft Windows 7/8/10 • Pentium 4 or equivalent processor (600 M minimum) • USB 2.0 port • 50 MB Free hard disk space • 256 MB Memory • (Internet Connection Preferred) • JI-820 2/18/18...

  • Page 28: General Information

    The equipment is warranted for one year from data of purchase against defects in materials or workmanship. Jupiter Instruments reserves the right to repair or replace products at its own and complete discretion. Customer must obtain from Jupiter Instruments a Return Authorization Number (RMA) prior to returning any products to Jupiter Instruments.

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