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Serial Triggering and Analysis Application Modules

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Features & Benefits

  • Automated Serial Triggering, Decode, and Search options for I2C, SPI, CAN, LIN, FlexRay, RS-232/422/485/UART, MIL-STD-1553, and I2S/LJ/RJ/TDM.*1
  • Trigger on all the critical elements of a serial bus such as address, data, etc.
  • Decode all the critical elements of each message. No more counting 1s and 0s!
  • Search through long acquisitions using user-defined criteria to find specific messages.
  • Event table shows decoded serial bus activity in a tabular, time-stamped format for quick summary of system activity.
  • Export Event table data to .csv format.

 

*1 Ethernet and USB information available in separate data sheet.

Serial Triggering and Analysis Application Modules

On a serial bus, a single signal often includes address, control, data, and clock information. This can make isolating events of interest difficult. The Serial Application modules for the MDO4000, MSO/DPO4000, MSO/DPO3000, and MSO/DPO2000 Series transform the oscilloscopes into a robust tool for debugging serial buses with automatic trigger, decode, and search for I2C, SPI, CAN, LIN, FlexRay, RS-232/422/485/UART, MIL-STD-1553, and I2S/LJ/RJ/TDM.

Serial Triggering
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Triggering on a specific transmit data packet going across an RS-232 bus. A complete set of triggers, including triggers for specific serial packet content, ensures you quickly capture your event of interest.

Trigger on packet content such as start of packet, specific addresses, specific data content, unique identifiers, etc. on popular serial interfaces such as I2C, SPI, CAN, LIN, FlexRay, RS-232/422/485/UART, MIL-STD-1553, and I2S/LJ/RJ/TDM.

Bus Display
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Color-coded display of a CAN bus, showing Start, DLC, Data, CRC, and Stop components of the serial signal.

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Simultaneously display the bus and digital waveforms. Digital waveforms show how the bus translates the individual signals based on the threshold settings (useful for making analog channels look like just 1s and 0s).

Provides a higher-level, combined view of the individual signals (clock, data, chip enable, etc.) that make up your bus, making it easy to identify where packets begin and end and identifying subpacket components such as address, data, identifier, CRC, etc.

Bus Decoding

Tired of having to visually inspect the waveform to count clocks, determine if each bit is a 1 or a 0, combine bits into bytes, and determine the hex value? Let the oscilloscope with a Serial Application module do it for you! Once you’ve set up a bus, the MDO4000, MSO/DPO4000, MSO/DPO3000, or MSO/DPO2000 Series will decode each packet on the bus, and display the value in hex, binary, decimal (LIN, MIL-STD-1553, and FlexRay only), signed decimal (I2S/LJ/RJ/TDM only), or ASCII (RS-232/422/485/UART only) in the bus waveform.

Event Table
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Event table showing decoded Identifier, DLC, DATA, and CRC for every CAN packet in a long acquisition.

In addition to seeing decoded packet data on the bus waveform itself, you can view all captured packets in a tabular view much like you would see in a software listing. Packets are time stamped and listed consecutively with columns for each component (Address, Data, etc.).

Search
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Search – I2C decode showing results from a Wave Inspector® search for Address value 50. Wave Inspector® controls provide unprecedented efficiency in viewing and navigating waveform data.

Serial triggering is very useful for isolating the event of interest, but once you’ve captured it and need to analyze the surrounding data, what do you do? In the past, users had to manually scroll through the waveform counting and converting bits and looking for what caused the event. With a Serial Application module, you can enable the MDO4000, MSO/DPO4000, MSO/DPO3000, and MSO/DPO2000 Series oscilloscopes to automatically search through the acquired data for user-defined criteria including serial packet content. Each occurrence is highlighted by a search mark. Rapid navigation between marks is as simple as pressing the Previous (←) and Next (→) buttons on the oscilloscope front panel.

Characteristics

I2C Characteristics

Bus Setup Options

Characteristic

Description

Sources (Clock and Data)

Analog channels 1-4

Digital channels D0-D15 (MSO models only)

Thresholds

Per-channel thresholds

Recommended Probing

Single Ended

Include R/W in Address

Yes or No

Formats Available

Hex

Binary

Display Modes

   Bus

Bus only

   Bus and Waveforms

Simultaneous display of bus and digital waveforms

   Event Table

Decoded packet data in a tabular view

Bus Trigger and Search Options

Characteristic

Description

Trigger and/or Search On

Start

Stop

Repeated Start

Missing Ack

Address (7 or 10 bit)

Data (number of bytes 1-5)

Address and Data

Bus Decode

Characteristic

Description

Maximum Clock/Data Rate

Up to 10 Mb/s (for automated decoding of bus)

Decode Display

Start (green bracket)

Address (yellow box)

Missing Ack (red ! symbol)

Data (cyan box)

Stop (red bracket)

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I2C bus setup, showing selection of bus display modes.

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Triggering on a specific address value on the I2C bus.

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Event table for I2C bus with all captured packets time stamped and in a tabular view.

SPI Characteristics

Bus Setup Options

Characteristic

Description

Sources (Clock, Data, Slave Select, and MISO)

Analog channels 1-4

Digital channels D0-D15 (MSO models only)

Thresholds

Per-channel thresholds

Recommended Probing

Single Ended

Decode Configuration

   Framing

Idle Time (2-wire SPI)

Slave Select (3-wire or 4-wire SPI)

   Clock

Rising or Falling Edge

   Slave Select

Active High or Active Low

   MOSI

Active High or Active Low

   MISO

Active High or Active Low

   Word Size

4-32 bits

   Bit Order

Most Significant (MS) First

Least Significant (LS) First

Formats Available

Hex

Binary

Display Modes

   Bus

Bus only

   Bus and Waveforms

Simultaneous display of bus and digital waveforms

   Event Table

Decoded packet data in a tabular view

Bus Trigger and Search Options

Characteristic

Description

Trigger and/or Search On

SS

Start of Frame

MOSI

MISO

MOSI and MISO

Data (number of words 1-16)

Bus Decode

Characteristic

Description

Maximum Clock/Data Rate

Up to 50 Mb/s (for automated decoding of bus)

Decode Display

Start (green bracket)

Data (cyan box)

Stop (red bracket)

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SPI bus setup, showing configuration options for bus sources.

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Triggering on a specific MOSI data value on the SPI bus.

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Event table for SPI bus with all captured packets time stamped and in a tabular view.

RS-232/UART/RS-422/RS-485 Characteristics

Bus Setup Options

Characteristic

Description

RS-232/UART Sources (Transmit and Receive)

Analog channels 1-4

Digital channels D0-D15 (MSO models only)

RS-422/RS-485 Sources (Transmit and Receive)

Analog channels 1-4

Thresholds

Per-channel thresholds

Recommended Probing

   RS-232/UART

Single Ended

   RS-422/RS-485

Differential

Polarity

Normal (RS-232)

Inverted (UART, RS-422/RS-485)

Decode Configuration

   Bit rate

      Pre-defined list of rates

50 b/s - 2.8 Mb/s

      Custom

50 b/s - 10 Mb/s

   Data bits

7, 8, or 9

   Parity

None, Odd, or Even

   Packets

On or Off

   End of packet

00h (NUL)

0Ah (LF)

0Dh (CR)

20h (SP)

FFh

Formats Available

Hex

Binary

ASCII

Display Modes

   Bus

Bus only

   Bus and Waveforms

Simultaneous display of bus and digital waveforms

   Event Table

Decoded packet data in a tabular view

Bus Trigger and Search Options

Characteristic

Description

Trigger and/or Search On

Tx Start Bit

Rx Start Bit

Tx End of Packet

Rx End of Packet

Tx Data (number of bytes 1-10)

Rx Data (number of bytes 1-10)

Tx Parity Error

Rx Parity Error

Bus Decode

Characteristic

Description

Maximum Bit Rate

Up to 10 Mb/s (for automated decoding of bus)

Decode Display

Data (cyan box)

Errors (red box)

   - Parity

   - Framing

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RS-232 bus setup, showing bit rate options for RS-232 bus.

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Triggering on a specific Tx data value on the RS-232 bus.

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Event table for RS-232 bus with all captured packets time stamped and in a tabular view.

CAN Characteristics

Bus Setup Options

Characteristic

Description

Source for CAN_H, CAN_L, Rx, or Tx Probing

Analog channels 1-4

Digital channels D0-D15 (MSO models only)

Source for Differential Probing

Analog channels 1-4

Thresholds

Per-channel thresholds

Recommended Probing

   CAN_H, CAN_L, Rx, Tx

Single Ended

   Differential

Differential

Bit Rate

   Pre-defined list of rates

10 Kb/s - 1 Mb/s

   Custom

10 Kb/s - 1 Mb/s

Sample Point

Position at 5% to 95% within bit period or unit interval

Formats Available

Hex

Binary

Display Modes

   Bus

Bus only

   Bus and Waveforms

Simultaneous display of bus and digital waveforms

   Event Table

Decoded packet data in a tabular view

Bus Trigger and Search Options

Characteristic

Description

Trigger and/or Search On

Start of Frame

Type of Frame (Data, Remote, Error, Overload)

Identifier (Standard or Extended)

Data (number of bytes 1-8, trigger or search when =, ≠, <, >, ≤, ≥)

ID and Data

End of Frame

Missing Ack

Bit Stuffing Error

Bus Decode

Characteristic

Description

Maximum Bit Rate

Up to 1 Mb/s (for automated decoding of bus)

Decode Display

Start (green bracket)

Identifier (yellow box)

DLC, CRC (purple box)

Missing Ack (red ! symbol)

Data (cyan box)

Stop (red bracket)

Errors (red box)

   - End of Frame

   - Bit Stuffing

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CAN bus setup, showing signal type options for CAN bus.

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Triggering on a specific data value on the CAN bus.

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Event table for CAN bus with all captured packets time stamped and in a tabular view.

LIN Characteristics

Bus Setup Options

Characteristic

Description

Source

Analog channels 1-4

Digital channels D0-D15 (MSO models only)

Thresholds

Per-channel thresholds

Recommended Probing

Single Ended

Sample Point

Position at 5% to 95% within bit period or unit interval

Decode Configuration

   Polarity

Normal or Inverted

   Bit rate

      Pre-defined list of rates

1.2 Kb/s - 19.2 Kb/s

      Custom

800 b/s - 100 Kb/s

   LIN standard

v1.x, v2.x, or Both

   Include parity bits with ID

Yes or No

Formats Available

Decimal: ID and Parity; Hex: Data and Checksum

Binary

Display Modes

   Bus

Bus only

   Bus and Waveforms

Simultaneous display of bus and digital waveforms

   Event Table

Decoded packet data in a tabular view

Bus Trigger and Search Options

Characteristic

Description

Trigger and/or Search On

Sync

Identifier

Data (number of bytes 1-8; trigger or search when =, ≠, <, >, ≤, ≥, inside range, outside range)

ID and Data

Wakeup Frame

Sleep Frame

Error (Sync, ID Parity, Checksum)

Bus Decode

Characteristic

Description

Maximum Bit Rate

Up to 1 Mb/s, by LIN definition up to 20 Kb/s (for automated decoding of bus)

Decode Display

Start (green bracket)

Sync, Break (purple box)

Identifier, Parity (yellow box)

Data (cyan box)

Checksum, Wakeup (purple box)

End of frame (red bracket)

Errors (red box)

   - Sync

   - Parity

   - Checksum

   - Header Time

   - Response Time

   - Frame Time

   - Response and Frame Time

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LIN bus setup, showing source configuration options for LIN bus.

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Triggering on a Sync Error on the LIN bus.

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Event table for LIN bus with all captured packets time stamped and in a tabular view.

FlexRay Characteristics

Bus Setup Options

Characteristic

Description

Source for Single-ended Probing

Analog channels 1-4

Digital channels D0-D15 (MSO models only)

Source for Differential Probing

Analog channels 1-4

Thresholds

High and Low thresholds per channel

Recommended Probing

Single Ended or Differential

Decode Configuration

   Bit rate

2.5 Mb/s, 5 Mb/s, 10 Mb/s, or Custom (1 Mb/s - 100 Mb/s)

   Channel type

A or B

   Polarity

BDiff or BP, BM, Tx or Rx

Formats Available

Decimal: ID, Len and Count; Hex: CRCs and Data

Hex

Binary

Display Modes

   Bus

Bus only

   Bus and Waveforms

Simultaneous display of bus and digital waveforms

   Event Table

Decoded packet data in a tabular view

Bus Decode

Characteristic

Description

Maximum Bit Rate

Up to 10 Mb/s (for automated decoding of bus)

Decode Display

TTS (purple box)

Start (green bracket)

Frame ID (yellow box)

Payload Length (purple box)

Headers (purple box)

   - Null

   - Normal

   - Sync

   - Payload

   - Startup

   - Unknown

   - Null Sync

   - Payload Sync

   - Null Startup

   - Payload Startup

   - CRC

Cycle Count (yellow box)

Data (cyan box)

CRC, DTS, CID (purple box)

Stop (red bracket)

   - TSS

   - Header CRC

   - Trailer CRC

   - Null Frame

   - Sync Frame

   - Startup Frame

   - BSS

   - FSS

Bus Trigger and Search Options

Characteristic

Description

Trigger and/or Search On

Start of Frame

Indicator Bits (Normal, Null, Payload, Sync, Startup)

Identifier (trigger when =, ≠, <, >, ≤, ≥, inside range, outside range)

Cycle Count (trigger when =, ≠, <, >, ≤, ≥, inside range, outside range)

Header Fields (Indicator Bits, Identifier, Payload Length, Header CRC, and Cycle Count)

Data (number of bits 1-16; byte offset ‘don’t care’ – 253; trigger when =, ≠, <, >, ≤, ≥, inside range, outside range)

ID and Data

End of Frame (Static, Dynamic (DTS), All)

Error (Header CRC, Trailer CRC, Null Frame, Sync Frame, Startup Frame)

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FlexRay bus setup, showing input options for FlexRay bus.

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PC-based, eye-diagram analysis software built an eye-diagram from the entire acquisition and plotted it against TP1 mask.

I2S/LJ/RJ/TDM Characteristics

Bus Setup Options

Characteristic

Description

Sources (Clock, Word, Data)

Analog channels 1-4

Digital channels D0-D15 (MSO models only)

Thresholds

Per-channel thresholds

Recommended Probing

Single Ended

Decode Configuration

   Word size

4-32 bits

   Clock

Rising or falling edge

   Word Select polarity

Normal or High

   Data High

1 or 0

   Bit order

Most Significant (MS) First

Least Significant (LS) First

Formats Available

Signed Decimal

Hex

Binary

Display Modes

   Bus

Bus only

   Bus and Waveforms

Simultaneous display of bus and digital waveforms

   Event Table

Decoded packet data in a tabular view

Bus Trigger and Search Options

Characteristic

Description

Trigger and/or Search On

Word Select

Frame Sync

Data (select either word, left word, or right word; trigger or search when =, ≠, <, >, ≤, ≥, inside range, outside range)

Bus Decode

Characteristic

Description

Maximum Clock/Data Rate

Up to 12.5 Mb/s (for automated decoding of I2S/LJ/RJ bus)

Up to 25 Mb/s (for automated decoding of TDM bus)

Decode Display

Start (green bracket)

Data (cyan box)

Stop (red bracket)

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I2S bus setup, showing input configuration options for I2S bus.

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Triggering on a specific data value on the I2S bus.

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Event table for I2S bus with all captured packets time stamped and in a tabular view.

MIL-STD-1553 Characteristics

Bus Setup Options

Characteristic

Description

Source

Analog channels 1-4

Reference waveforms 1-4

Math waveform

Thresholds

High and Low threshold per source

Recommended Probing

Differential or Single Ended (only one single-ended signal required)

Decode Configuration

   Polarity

Normal or Inverted

   Bit rate

1 Mb/s per the standard

Formats Available

Mixed1: Hex (data), Decimal (addresses and count), Binary (bits)

Mixed2: ASCII (data), Decimal (addresses and count), Binary (bits)

Block Hex

Hex and Binary

Binary

Display Modes

   Bus

Bus only

   Bus and Waveforms

Simultaneous display of bus and digital waveforms

   Event Table

Decoded packet data in a tabular view

Bus Trigger and Search Options

Characteristic

Description

Trigger and/or Search On

Sync

Word Type*2 (Command, Status, Data)

Command Word*2 (set RT Address (=, ≠, <, >, ≤, ≥, inside range, outside range), T/R, Sub-address/Mode, Data Word Count/Mode Code, and Parity individually)

Status Word*2 (set RT Address (=, ≠, <, >, ≤, ≥, inside range, outside range), Message Error, Instrumentation, Service Request Bit, Broadcast Command Received, Busy, Subsystem Flag, Dynamic Bus Control Acceptance (DBCA), Terminal Flag, and Parity individually)

Data Word (user-specified 16-bit data value)

Error (Sync, Parity, Manchester, Non-contiguous data)

Idle Time (minimum time selectable from 4 µs to 100 µs; maximum time selectable from 12 µs to 100 µs; trigger on < minimum, > maximum, inside range, outside range)

Bus Decode

Characteristic

Description

Maximum Clock/Data Rate

Up to 1 Mb/s (for automated decoding of bus)

Decode Display

Start (green bracket)

Sync*3 (purple box) with Word Type identified

Address (yellow box)

R/T (purple box)

Word Count (purple box)

Status Bits (purple box)

Data (cyan box)

Parity (purple box)

Stop (red bracket)

Errors (red box)

*2 Trigger selection of Command Word will trigger on Command and ambiguous Command/Status words. Trigger selection of Status Word will trigger on Status and ambiguous Command/Status words.

*3 Ambiguous Command and Status words will be labeled with C/S and a generic bit decode will be displayed.

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MIL-1553 bus setup, showing threshold setup for MIL-1553 bus.

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Triggering on a specific data value on the MIL-1553 bus.

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Event table for MIL-1553 bus with all captured packets time stamped and in a tabular view.

Ordering Information

Serial Bus

MDO4000*4

MSO/DPO4000B*4

MSO/DPO4000*5 Series Module

MSO/DPO3000 Series Module

MSO/DPO2000 Series Module

Description

I2C, SPI

DPO4EMBD*6, 7

DPO3EMBD*8

DPO2EMBD*9

Embedded Serial Triggering and Analysis Module. Enables triggering on packet-level information on I2C and SPI buses as well as analytical tools such as digital views of the signal, bus views, packet decoding, search tools, and packet decode tables with time stamp information

RS-232/422/ 485/UART

DPO4COMP*10

DPO3COMP

DPO2COMP

Computer Serial Triggering and Analysis Module. Enables triggering on packet-level information on RS-232/422/485/UART buses as well as analytical tools such as digital views of the signal, bus views, packet decoding, search tools, and packet decode tables with time stamp information

CAN, LIN

DPO4AUTO*11

DPO3AUTO

DPO2AUTO

Automotive Serial Triggering and Analysis Module. Enables triggering on packet-level information on CAN and LIN buses as well as analytical tools such as digital views of the signal, bus views, packet decoding, search tools, and packet decode tables with time stamp information

CAN, LIN, FlexRay

DPO4AUTOMAX*12

Extended Automotive Serial Triggering and Analysis Module. Enables triggering on packet-level information on CAN, LIN, and FlexRay buses as well as analytical tools such as digital views of the signal, bus views, packet decoding, search tools, packet decode tables with time stamp information and eye-diagram analysis software

FlexRay

DPO3FLEX

FlexRay Serial Triggering and Analysis Module. Enables triggering on packet-level information on FlexRay buses as well as analytical tools such as digital views of the signal, bus views, packet decoding, search tools, and packet decode tables with time stamp information

I2S/LJ/RJ/TDM

DPO4AUDIO*13, 14

DPO3AUDIO*15

Audio Serial Triggering and Analysis Module. Enable triggering on packet-level information on I2S, LJ, RJ, and TDM audio buses as well as analytical tools such as digital views of the signal, bus views, packet decoding, search tools, and packet decode table with time stamp information

MIL-STD-1553

DPO4AERO

DPO3AERO

Aerospace Serial Triggering and Analysis Module. Enables triggering on packet-level information on MIL-STD-1553 serial buses as well as analytical tools such as digital views of the signal, bus views, packet decoding, search tools, and packet decode tables with time stamp information

*4 Ethernet and USB serial triggering and analysis application modules available.

*5 USB serial triggering and analysis application module available.

*6 For DPO4000 (non-B) Series with serial numbers lower than C020000, contact Tektronix for a serial triggering hardware update to enable 2-wire SPI triggering.

*7 For SPI, only 2-wire support is available on DPO4032, DPO4102B, and DPO4102B-L models.

*8 For SPI, only 2-wire support is available on DPO3012, DPO3032, and DPO3052 models.

*9 For SPI, only 2-wire support is available on DPO2012 model.

*10 For DPO4000 (non-B) Series with serial numbers lower than C020000, contact Tektronix for a serial triggering hardware update to enable RS-232/422/485/UART parity error triggering.

*11 For DPO4000 (non-B) Series with serial numbers lower than C020000, contact Tektronix for a serial triggering hardware update to enable LIN triggers.

*12 For DPO4000 (non-B) Series with serial numbers lower than C020000, contact Tektronix for a serial triggering hardware update to enable FlexRay and LIN triggers.

*13 Not available on DPO4032, DPO4102B, and DPO4102B-L models.

*14 For DPO4000 (non-B) Series with serial numbers lower than C020000, contact Tektronix for a serial triggering hardware update to enable I2S, LJ, RJ, TDM triggers.

*15 Not available on DPO3012, DPO3032, and DPO3052 models.

Recommended Probes

Please refer to www.tek.com/probes for further information on the recommended models of probes and any necessary probe adapters.

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