N1021B Differential Time-Domain Reflectometry and Time-Domain Transmission

  • Bandwidth 18 GHz
  • 100 Ohm nominal differential impedance
  • Variable tip spacing: 0.0-2.54mm
  • Spring-loaded probe tips with independent Z-axis movement

N1021B Differential Time-Domain Reflectometry and Time-Domain Transmission Probe Kit Details

The N1021B is an ergonomically designed handheld probe to interface TDR/TDT modules to printed circuit boards (PCBs) and components that lack common coaxial high-frequency connectors. The built-in wheel adjusts the pitch between the differential tips to make good contact with pads or access points spaced from closed to typical IC pins (2.54 mm).

Engineers working on high-speed differential electrical channels can analyze where the device under test (DUT) causes reflections that unfavorably affect the signal integrity (SI) of their designs. Manufacturers of printed circuit boards (PCB) can control process consistency from batch to batch, and/or locate the position of shorts, opens, or other flaws.

The N1021B probe is used in conjunction with the DCA-X Wideband Oscilloscope Mainframe, the 54754A Differential and Single-ended TDR-TDT Module, and the N1055A35/50 GHz 2/4 Port TDR/TDT Remote Sampling Head. The N1021B probe launches small electrical steps in the DUT (device under test) and/or receives the response, which is processed and displayed in the time domain or as S-parameters (SDD11, SDD22, SDD21, or SDD22). Time-domain measurements can display the reflected voltages or observed impedances versus time or distance. S-parameter measurements include magnitude, phase, and group delay.

The N1021B kit consists of these elements:
Qty.  Description  Replacement1:
1 Differential TDR Probe  -
Pair of matched cables (1 m)  N1021-60003
SMA Short (m)  0960-0055
SMA Load 50 Ohm (m)  1810-0118
2 SMA Adapter (f-f)  1250-1666
  Adapter to positioners (includes two 2.5 mm screws and one Allen wrench) N1021-60008
ESD Wrist strap  9300-1367
ESD Wrist strap ground cord  9300-0980
ESD warning label stickers  -
  User's Guide (either printed or on CD) -
Box with foam insert  -

1 Replacement parts can be bought at Searching the Parts Catalog

The Keysight N1021B TDR 18 GHz differential TDR probe kit connects printed circuit boards and other devices without connectors to the Keysight TDR module in the DCA-X wideband oscilloscope mainframe.

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