DTDR-800 Differential TDR

DTDR-800 Differential TDR

- Series: TDR - Brand: Te-lead

The Sequid DTDR-800 features a very stable operation. Due to the sophisticated time base generation technique in combination with proprietary correction algorithms the DTDR-800 features a very high time-base stability (jitter Jrms<2.5ps). Furthermore, the DTDR-800 grants this stability over a wide temperature range without the need for recurring calibrations.

Product Overview

Step rise/fall-time

The DTDR-800 is equipped with two fast inter-nal step generators providing step-signals with a 10% - 90% rise/fall-time below 800ps (typ. 650ps), corresponding to a 20% - 80% rise-time below 550ps (typ. 450ps). The use of two gen-erators enables true differential technology, which makes differential probing easy, since ground contacts are not required. Of course, ground contacts are still needed in case the fully integrated single-ended functionality is used. The voltage step of each channel amounts to 550mV under matched conditions.

Ultra low random Jitter

The DTDR-800 exhibits the best RMS-jitter per-formance in its class: lower than 3.0ps over the full temperature range.

Superior Stability over Temperature

All Sequid products undergo a temperature check from 0°C to 40°C to verify the functional-ity over the full range. The DTDR-800’s excel-lent jitter performance is minimally influenced by temperature. Amplitude variations are around only 1%. This performance is achieved without application of time consuming and re-curring error compensations.

Laboratory & Industrial

Due to its time base and temperature stability the DTDR-800 is the ideal choice not only for laboratory but also for outdoor applications. In addition, its full metal housing offers a high level of immunity to EMI and makes it well suited for industrial applications. The casing ex-hibits a small form factor and weighs below 3kg.

Software Applications

A wide range of accessories & applications are implemented or optionally available (see sec-tion 5), e.g. probes, TDR functionality and S11-parameters. The DTDR-800 comes along with a user-software (SEUNIS = Sequid Universal Measurement Software), combining all dif-ferent applications and calibrations. Software libraries (SAIL = Sequid Automation Inter-face Library) are available for controlling the device in ATE applications from many programming languages (e.g. C/C++, C#, Py-thon, LabVIEW, MATLAB). Modules for exporting the data from the Sequid soft-ware are included.


Technical Parameter

  • 2 differential step generators

  • 2 real-thru sampling modules

  • TDR Step rise time < 800ps (10%-90%)

  • TDR step amplitudes: Uout = 550mV (@50Ohm)

  • Analog input bandwidth 1GHz

  • Extremely low jitter < 3ps

  • Channel-to-channel skew < 20ps

  • Fully integrated ESD protection module (optional)

  • Laboratory- and production applications

  • Dimensions 221x210x74mm3, weight 2800g

  • High temperature stability from 0°C to 40°C

  • No external components

  • USB-interfaces

  • (further interfaces upon request)

  • Further accessories you find here


Selection and Accessories

Standard (delivered with device)

• Seunis user software featuring

o Typical TDR-functionality

o Calibration wizard (OSL)

o De-embedding

o Saving, reloading & exporting data

• Software module for single-ended imped-ance measurement (SMM-plus)

• Software module for differential imped-ance measurement (SMM-Dplus)

• Power supply (for indoor use only)

• Operator’s manual & quick start guide

• 2m USB-cable for connection with PC

• 24-months standard limited warranty

• Test certificate

Optional (order code)

• Integrated ESD-Protection Module (SESD-PCS-D800)

• Metallic Storage and Travel suitcase for safe transport and storage (SSTC)

• Software module for Differential Time-Domain-Network-Analyzer functionality (SMM-DS11 with SMM-S11 included)

• RPC-3.5mm calibration kit OSL (S03K30R‑OSL3), OSLT (S03K30R‑OSLT)

• SMA economy calibration kit OSL (SCKE-SF-R), OSLT (SCKE-SF-RT)

• Phase matched pair of SMA cables (75cm, 50, skew  1ps) with SMA (SPMC-P)

• Phase matched pair of RPC-3.5 cables (50cm, 50, skew  1ps) with (SPMC-P-3.5mm)

• Precision 50 single-ended SMA cable with rotational adapter (SCC-P)

• Precision 50 single-ended SMA cable (SCC-P-S)

• Economy single-ended probe with fixed 2.5 or 5.mm pitch (SSTP-E)

• Precision single-ended probe with varia-ble pitch from 0.5 to 1.5mm (SSTP-P)

• Economy differential probe with fixed 1.0 or 2.5mm pitch (SDTP-E)

• Precision differential probe with variable pitch from 0.5 to 5.0mm (SDTP-P)

• USB foot switch (SUSB-FS2)


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