DTDR-65 Differential TDR

DTDR-65 Differential TDR

- Series: TDR - Brand: Te-lead

The Sequid DTDR-65 is optimized for an extremely stable operation. Due to sophisticated time base generation techniques in combination with proprietary correction algorithms the DTDR-65 (see also STDR-65) features a vertical and horizontal stability, which is usually reserved for the high-price segment: the random jitter is Jrms<500fs and the amplitude noise below Vrms<500µV. Furthermore, the DTDR-65 grants this stability over a wide temperature range without the need for recurring calibrations, making it absolutely unique.

Product Overview

  • Step rise/fall-time faster than 65ps

The DTDR-65 is equipped with two ultra fast in-ternal step generators providing step-signals with a 10% - 90% rise/fall-time faster than 65ps (typically < 55ps), corresponds to a 20% - 80% rise-time < 40ps. The voltage step of each chan-nel amounts to 150mV under matched condi-tions.

  • Ultra low random Jitter

The DTDR-65 exhibits the best RMS-Jitter per-formance in its class: lower than 500fs 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-65’s excellent jitter performance is minimally influenced by temperature. Amplitude variations are around only 0.5%. Theses parameters are achieved without application of time consuming and re-curring error compensations.

  • Laboratory & Industrial

Due to its time base and temperature stability the DTDR-65 is the ideal choice not only for la-boratory but also for outdoor applications. In addition, its fanless full metal housing offers a high level of immunity to EMI and makes it well suited for industrial applications. The instru-ment can be powered optionally by a battery, enabling operation in basic configuration for more than three hours without recharging. The casing exhibits a small form factor and weighs below 3kg.

  • Software Applications

A wide range of accessories & applications are implemented or optionally available (see sec-tion 0), e.g. probes, the TDR functionality, S11-parameter measurements & permittivity meas-urements. The DTDR-65 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#,Python, 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 < 65ps (10%-90%)

  • TDR step amplitudes: Uout = 150mV (@50Ohm)

  • Analog input bandwidth 10GHz

  • Extremely low jitter < 500fs

  • Channel-to-channel skew < 2ps

  • Fully integrated ESD protection module (optional)

  • Lab- & production applications

  • Dimensions 221x210x74mm3, weight 2800g

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

  • No external components

  • USB-interface


Selection and Accessories

5.1 Standard (delivered with device)

• SEUNIS software featuring:

o Typical TDR functionality

o Calibration wizard (OSLT)

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

5.2 Optional (order code)

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

• Motion Sensor (SESD-PMS): keeps ESD-Protection disabled during motion

• Battery pack for 3 hours of operation in basic configuration (SAP)

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

• Software module for Single-ended Time-Domain-Network-Analyzer functionality (SMM-S11)

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

• Software module for Software-Measure-ment Module F2P "full 2-port" single-ended S-Parameters (SMM-F2P-S)

• Software module for determining the die-lectric constant of PCBs (SMM-EpsBase)

• Software module for determining the fre-quency dependent dielectric constant of PCBS (SMM-EpsPlus)

• Coaxial line sensor for permittivity meas-urements (SDM-10G)

• Software module for Permittivity Meas-urement Software Module (SMM-Perm-Coax)

• 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)

• Connector for Pt100 (SPT100)


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