Jitter and Timing Analysis Software

TDSJIT3 Advanced and TDSJIT3 Essentials
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Features & Benefits

  • Use the Jitter Wizard to Easily Make Accurate Jitter Measurements
  • Analyze Random and Deterministic Jitter (Rj/Dj) and Estimate Total Jitter at BER
  • Analyze Deterministic and Total Jitter on Repeating or Arbitrary Random Data Patterns
  • Analyze Frequency-bounded Jitter and Timing Measurements using Timing Measurement Filters (First, Second, and Third-order High-pass and Low-pass Butterworth)
  • Acquire, Capture, Store, and Analyze Worst-case Offenders
  • View Simultaneous Results from Alternate Measurement Configurations Designated on a Single Channel or Source
  • Qualify Jitter Measurements Using Channel Inputs, Cursors or Timing Details, Population Size, and Amplitude Range
  • View and Analyze Jitter Spectrums, Histograms, and Trends with One Click
  • 400 fs Typical Jitter Noise Floor with DSA72004
  • 800 fsRMS Typical Jitter Accuracy with DSA72004
  • Utilize a Configurable Golden PLL (TDSJIT3 Advanced only)
  • Differential Crossover Voltage Measurements (TDSJIT3 Advanced only)


  • Characterize Timing and AC Performance of High-speed Parallel and Serial Designs and Systems to 10.25 Gb/s and Beyond
  • Characterize Data-to-Data and Clock-to-Data Jitter
  • Characterize PLL Dynamic Performance and Transfer Functions
  • Characterize Modulation of Spread Spectrum Clock Circuits
  • Characterize Jitter Generation, Transfer, and Tolerance
  • Characterize Clock and Data Jitter in HyperTransport, PCI Express, Fibre Channel, SONET, Serial ATA, and other Electrical or Optical Physical Layer Circuits

User-installed, Oscilloscope-resident Timing Analysis Package

TDSJIT3 is the premiere jitter and timing analysis software package available for real-time oscilloscopes. Running externally or within the Tektronix DPO7000, DPO/DSA70000, TDS5000B, TDS6000B/C, and TDS/CSA7000B Series oscilloscopes, TDSJIT3 provides the highest accuracy and lowest noise jitter measurements available in any real-time instrument. With comprehensive jitter analysis algorithms TDSJIT3 simplifies discovering jitter and its related sources in today's high-speed digital, communication, and system designs.

Digital designers, analog designers, communication and systems engineers in the computer, semiconductor, and communications industries are facing new challenges as processor clock speeds race beyond 3 GHz and backplane electrical data rates greater than 6 Gb/s become commonplace. These increasing clock and data speeds mean reduced circuit tolerance, or margin, for noise and jitter. By using tools to rapidly characterize and discover sources of jitter, designs can be made more robust, brought to market faster, and ultimately operate better in today's ultra high-speed environment.




General Measurements

Rise Time, Fall Time, Positive Width, Negative Width, High Time, Low Time, Skew, Differential Crossover Voltage*1

Clock Measurements

Frequency, Period, Cycle-Cycle, N-Cycle, Positive Cy-Cy Duty, Negative Cy-Cy Duty, Positive Duty Cycle, Negative Duty Cycle, Clock TIE, Clock PLL TIE*1

Data Measurements

Data Frequency, Data Period, Data TIE, Data PLL TIE*1

Clock to Data

Setup, Hold, Clock-out

Advanced Analysis*1

Rj, Dj, Pj, DCD, DDj, Tj, BER


Histogram, Time Trend, Cycle Trend, Spectrum, Eye Diagram Statistics*1 (BER CDF Curve), Phase Noise, Transfer Function

Data Logging

Statistics, Min/Max Wfm, Snapshot, Worst-case

*1 Features are only available with TDSJIT3 Advanced.


TDSJIT3 Jitter Measurements

The TDSJIT3 Jitter Analysis Software extends Tektronix’ real-time oscilloscopes capability, performing complex measurements on contiguous clock cycles or data edges single-shot acquisitions. Providing jitter measurements for most key timing parameters required by today’s interface standards, TDSJIT3 Advanced and TDSJIT3 Essentials are specifically designed to meet the jitter measurement needs of today's high-speed digital designers in the computer and communications industries. Measurements can be made on differential signals, between two separate inputs, or on multiple inputs simultaneously. Multiple measurements and plots can be displayed on the internal and external monitor. Trend analysis plots quickly show how timing parameters can change over time, like frequency drift, PLL startup, or response to power supply changes. Spectrum analysis quickly shows the frequency of jitter and modulation sources for easier identification: adjacent oscillators and clocks, power supply noise, or signal crosstalk. Comprehensive statistics and histograms of timing parameters enhance the powerful analysis capabilities of TDSJIT3 Plot displays and data can be relocated to the second monitor, saved to disk, or exported for further analysis. Acquired waveforms and measurement data logs can be saved for later analysis. You can quickly make accurate total jitter (Tj) estimates at levels down to 1×10-18 BER on common data signals including those with random pattern content. Control population size across single or multiple acquisitions; qualify what part of a signal is measured; correlate jitter trends and peaks to the original acquisition waveform; even share and analyze stored waveforms captured by colleagues.


TDSJIT3 Jitter Analysis screenshot


TDSJIT3 Trend Analysis plot



DPO7000 Series (TDS5000/B, TDS6000/B, TDS7000/B, and CSA7000/B Series Provide Similar Capability)



Jitter Noise Floor

0.6 psRMS (DPO7354, typical over 10 μs acquisition).

Jitter Measurement Accuracy

1.5 psRMS (DPO7354, typical over 10 μs acquisition).

Delta Time Accuracy

3.0 psRMS (20 GS/s, ≤10 nS measurement period).

Delta Time Accuracy Specification

[0.06/(sample_rate) + 1.5 ppm×|Measurement_period|]RMS

±[0.30/(sample_rate) + 1.5 ppm×|Measurement_period|]pk

DPO/DSA70000 Series (TDS6000C Series Provide Similar Capability)



Jitter Noise Floor

400 fsRMS (DSA72004, typical over 10 μs acquisition)

Jitter Measurement Accuracy

800 fsRMS (DSA72004, typical)

Delta Time Accuracy

600 fsRMS (typical, see instrument manual for details)

Physical Characteristics

Software supplied on compact disk media.

Software application running on the DPO7000, DPO/DSA70000, TDS5000/B, TDS6000B/C, and TDS/CSA7000/B Series four-channel oscilloscopes.


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