GW Instek GDS-3000 Series Manual
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GW Instek GDS-3000 Series Manual

GW Instek GDS-3000 Series Manual

Digital storage oscilloscope
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Digital Storage Oscilloscope

GDS-3000 Series
SERIAL DECODE MANUAL
GW INSTEK PART NO. 82DS-SBD00U01
ISO-9001 CERTIFIED MANUFACTURER

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  • Page 1: Digital Storage Oscilloscope

    Digital Storage Oscilloscope GDS-3000 Series SERIAL DECODE MANUAL GW INSTEK PART NO. 82DS-SBD00U01 ISO-9001 CERTIFIED MANUFACTURER...
  • Page 2 October 2010 This manual contains proprietary information, which is protected by copyright. All rights are reserved. No part of this manual may be photocopied, reproduced or translated to another language without prior written consent of Good Will company. The information in this manual was correct at the time of printing. However, Good Will continues to improve products and reserves the rights to change specification, equipment, and maintenance procedures at any time without notice.

  • Page 3: Table Of Contents

    TABLE OF CONTENTS Table of Contents GETTING STARTED ............5  Activating Optional Software ....6  QUICK REFERENCE ............8  Menu Tree / Operation Shortcuts ..9  MEASUREMENT .............. 12  Serial Bus ..........13  INDEX................29 ...

  • Page 5: Getting Started

    GETTING STARTED ETTING STARTED This chapter describes how to install the serial decode software. Activating Optional Software ..........6 ...

  • Page 6: Activating Optional Software

    The GDS-3000 has Power Analysis software, Serial Background bus decoding software (page 13) as well as other GW Instek software packages as optional extras. An activation key is required to activate the software. An activation key is required for each optional software package.
  • Page 7 GETTING STARTED 5. Use the Variable knob and Select key to select the activation key from the USB root directory. When prompted to continue, press the Select key again. Files: XX.LIS Press B1 on the front panel to see if the Confirm Serial Bus decode activation worked.
  • Page 8 GDS-3000 Serial Decode User Manual UICK REFERENCE This chapter depicts the serial bus menu tree. Use them as a handy reference to get quick access to the functionality. Menu Tree / Operation Shortcuts ........9 BUS – UART ................9 BUS –...

  • Page 9: Quick Reference

    QUICK REFERENCE Menu Tree / Operation Shortcuts BUS – UART BUS – I Include R/W in Bus Display Define Inputs address Event Table UART SCLK Select CH1~CH4 SCLK Binary CH1~CH4 Threshold Save Event Addressing Mode XXX~XXX Table 7 bit Set to TTL 1.4V 10 bit Set to ECL - 1.3V...

  • Page 10: Bus - Spi (4 Channel Models Only)

    GDS-3000 Serial Decode User Manual BUS – SPI (4 channel models only) Trigger Bus Menu – I...

  • Page 11: Trigger Bus Menu - Uart

    QUICK REFERENCE Trigger Bus Menu – UART Trigger Bus Menu – SPI (4 channel models only)
  • Page 12 GDS-3000 Serial Decode User Manual EASUREMENT Serial Bus ................ 13 Serial Bus Overview ............. 13 Serial Decode Display ............15 Bus Trigger Settings ............. 16 Serial Bus Event Tables ............19 UART Serial Bus Interface ..........20 C Serial Bus Interface ............23 SPI Serial Bus Interface ............

  • Page 13: Measurement

    MEASUREMENT Serial Bus The serial bus trigger and decode software includes support for 3 common serial interfaces: SPI (4 channel models only), UART and C. Each interface is fully configurable to accommodate a wide range of protocol variation. Each input can be displayed as binary or hexadecimal. An event table can also be created to aid in debugging.
  • Page 14 GDS-3000 Serial Decode User Manual Configuration Addressing mode, Read/Write in address Start, Repeat Start, Stop, Missing Trigger On Ack, Address, Data, Address/Data The SPI (Serial Interface Peripheral) bus is fully configurable to accommodate the wide variety of SPI interfaces. This bus is only available on 4 channel models.

  • Page 15: Serial Decode Display

    MEASUREMENT Serial Decode Display The Start bit is shown as a green bracket. Start Bit The Stop bit is shown as an orange bracket. Stop Bit Data packets can be shown in Hex or Binary. The Data color of the packet is the same as the channel color. If there is an error in decoding the serial data, an Error Indicator error indicator will be shown.

  • Page 16: Bus Trigger Settings

    GDS-3000 Serial Decode User Manual Bus Trigger Settings The bus trigger conditions should be set at any time after UART, C or SPI have been selected as the B1 or B2 buses. If the trigger is not set to Bus the trigger will not be stable. Panel Operation 1.
  • Page 17 MEASUREMENT 1. If Trigger On was configured to Data*, press Data from the bottom menu. *The applicable Trigger On settings are shown below. Tx Data, Rx Data UART Data, Address/Data MOSI, MISO, MOSI&MISO 2. Press Number of Words/Number of Bytes from the side menu and choose data length.
  • Page 18 GDS-3000 Serial Decode User Manual If Address was configured for the Trigger On Trigger On - setting, then the triggering address/addresses Address must be configured. 1. If Trigger On was configured to Address or Address/Data (I C), press Address on the bottom menu. 2.

  • Page 19: Serial Bus Event Tables

    MEASUREMENT Variable knob to highlight a binary or hex digit and press Select. Use the Variable knob to choose a value for the digit and press Select to confirm. 0,1, X (don’t care) Binary 0~F, X (don’t care) 6. Press Direction on the bottom menu Direction and choose the direction from the side menu.

  • Page 20: Uart Serial Bus Interface

    GDS-3000 Serial Decode User Manual Time, Repeat Start, Address, Data, Missing Ack. Time, MISO frame data, MOSI frame data. Example Below shows the data associated with an SPI event table in a spreadsheet. Time MOSI MISO -11.60us 0D87 0D87 -10.16us 06C0 06C0 -8.720us 8343 -7.282us 243...
  • Page 21 MEASUREMENT 2. Choose Bus 1 or Bus 2 by pressing the corresponding bus key, B1 or 3. Press Bus from the bottom menu and choose the UART serial bus on the side menu. 1. Press Define Inputs from the bottom Define Inputs menu.
  • Page 22 GDS-3000 Serial Decode User Manual 3. Press Threshold from the side menu and configure the threshold. Logic 0<threshold<logic 1 To set to TTL levels (1.4V), press TTL. To set to ECL levels (-1.3V), press ECL. Configuration The Configure key sets the baud rate, number of data bits and parity.

  • Page 23: I 2 C Serial Bus Interface

    MEASUREMENT Press Bus Display from the bottom Bus Display menu and Hex or Binary from the side menu. Hex, Binary Range 1. Press Event Table from the bottom Event Table menu. 2. Press Event Table from the side menu to turn the event table On or Off.
  • Page 24 GDS-3000 Serial Decode User Manual 2. Press the corresponding bus key, B1 or B2. 3. Press Bus from the bottom menu and choose I C from the side menu. 1. Press Define Inputs from the lower Define Inputs menu. 2. From the side menu choose the SCLK input and the SDA Input.
  • Page 25 MEASUREMENT To set to TTL levels (1.4V), press Set to TTL. To set to ECL levels (-1.3V), press Set to ECL. 1. Press Include R/W in address from Include R/W in the bottom menu. address 2. From the side menu select Yes or Yes, No R/W in Address...

  • Page 26: Spi Serial Bus Interface

    GDS-3000 Serial Decode User Manual SPI Serial Bus Interface The serial peripheral interface (SPI) is a full duplex 4 wire synchronous serial interface. The 4 signals lines: Serial clock line (SCLK), slave select (SS), Master output/slave input (MOSI, or SIMO) and the Master input/slave output (MISO, or SOMI). The word size is configurable from 8, 16 or 32 bits.
  • Page 27 MEASUREMENT OFF, CH1~4 MOSI OFF, CH1~4 MISO Set the Threshold 1. Press Threshold from the bottom menu. 2. Press Select from the side menu. Choose SCLK, SS, MOSI or MISO line thresholds. SCLK, SS, MOSI, MISO Range 3. Press Threshold from the side menu and configure the threshold.
  • Page 28 GDS-3000 Serial Decode User Manual Press Bus Display from the bottom Bus Display menu and Hex or Binary from the side menu. Hex, Binary Range 1. Press Event Table from the bottom Event Table menu. 2. Press Event Table from the side menu to toggle the event table On or Off.

  • Page 29: Index

    INDEX NDEX Activation keys ......6 C ............ 23 overview ........13 Display SPI ........... 26 diagram .......... 15 UART ..........20 Event table ........19 Software activation ...... 6 Optional software Trigger Settings ......16 activation ......... 6 Serial Bus ........13...

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