Picotest J2154A Differential TDR
Video notes
Picotest demonstrates the J2154A PerfectPulse differential TDR.
Picotest
Picotest J2154A PerfectPulse® Differenzielles TDR
Picotest J2154A PerfectPulse® Differenzielles TDR
Pocket-Sized Precision for PCB and Cable Testing
SKU: J2154A
Normaler Preis
£3,350.00 GBP
exc tax
Normaler Preis
Verkaufspreis
Grundpreis
pro
£3,350.00 GBP
exc tax
Versand wird beim Checkout berechnet
If no stock is shown above, order now and we'll dispatch within 7 working days.
Verfügbarkeit für Abholungen konnte nicht geladen werden
Key Features
30ps Rise Time Pulse Generation
Portable USB-C Powered Operation
Differential & Single-Ended Modes
10.5GHz Bandwidth Performance
Universal 50Ω Oscilloscope Compatibility
Enables TDR, FRA and VNA measurements
~164 mil FR4 Resolution
Overview
Compatible with any 50Ω oscilloscope, the J2154A transforms basic test equipment into a comprehensive PCB trace analyser, cable tester, and impedance measurement system without the £20,000+ investment typically required for dedicated TDR instruments.
The internal 10.5GHz pulse generator and power splitter enable both single-ended and differential TDR measurements, making it ideal for modern high-speed digital designs requiring controlled impedance verification. Engineers worldwide rely on this tool for PCB coupon testing, signal integrity validation, and pre-production impedance verification across electronics development projects.Pairs perfectly with the Picotest P2105A TDR probe for complete impedance measurement solutions.
Downloads
User Manuals
Why Engineers Choose the Picotest J2154A PerfectPulse® Differenzielles TDR
Cost-Effective TDR Solution
Delivers professional impedance testing capabilities at a fraction of traditional TDR instrument costs, making advanced measurements accessible to smaller teams and budgets
Instant Oscilloscope Integration
Transforms existing 50Ω oscilloscopes into comprehensive TDR systems without requiring expensive dedicated sampling instruments or specialised test equipment
High-Resolution Impedance Detection
Provides industry-leading ~164 mil resolution on FR4 substrates, enabling precise characterisation of PCB traces, connectors, and cable assemblies critical for signal integrity validation
Videos
Videos are hosted on YouTube and load only when you press play.
Overview
Image Placeholder — Picotest J2154A PerfectPulse Differential TDR
The J2154A revolutionises impedance testing by delivering sampling-grade TDR performance in a pocket-sized, USB-powered package costing a fraction of traditional instruments. This breakthrough enables signal integrity engineers to perform professional impedance measurements without the £15,000-£50,000+ investment typically required for dedicated TDR systems.
Where It Fits
- Single-Ended TDR P2105A TDR Probe Bundle
- Differential TDR P2103A Differential Probe
- Complete Solution TDR Measurement Systems
Why It Matters
| Feature | Why It's Important | What You Gain |
|---|---|---|
| 30ps Rise Time | Enables high-resolution spatial measurements | Detect impedance changes as small as 164 mils on FR4 |
| USB-C Power | Eliminates external power requirements | Portable testing capability for field and production use |
| Oscilloscope Integration | Leverages existing test equipment investment | Professional TDR without dedicated sampling instruments |
| Differential Capability | Modern designs require differential pair testing | Complete impedance characterisation for high-speed digital |
The J2154A includes a demo trace board with various impedance structures, enabling immediate hands-on learning and measurement validation for new users.
Wiring Quick-Start
| Host | Direction | Through | Device | Notes |
|---|---|---|---|---|
| Oscilloscope Ch1 | → | BNC-SMA Cable | J2154A Port 1 | TDR signal input/output |
| Oscilloscope Ch2 | → | BNC-SMA Cable | J2154A Port 3 | Differential mode (optional) |
| J2154A Port 2 | → | TDR Probe | Device Under Test | Signal injection point |
| J2154A Port 4 | → | TDR Probe | Device Under Test | Differential return (if used) |
| USB-C Port | → | USB Cable | 5V Power Source | 118mA typical, 130mA max |
Code Snippet
// Oscilloscope Math Setup for TDR Analysis // Configure for impedance calculation from reflection coefficient Math1 = 50 * (1 + Rho) / (1 - Rho) where Rho = (Ch1 - Ch2) / (Ch1 + Ch2)
// Time-to-Distance Conversion
Distance = (Time × c × √εr) / 2
// c = speed of light, εr = relative permittivity (~4.3 for FR4)| Ordering information | |
|---|---|
| Part number (SKU) | J2154A |
| Manufacturer | PicoTest Corp |
| EAN | 5055383624560 |
| Warranty | 12 Monate |
| Shipping weight | 0.5 kg |
- 1 ×J2154A PerfectPulse differential TDR
- 1 ×Picotest TDR demo trace board
- 1 ×USB-C cable
- 2 ×BNC to SMA PDN cable, 305 mm (12 in)
Engineer Q&A
10 questionsQuestions and Answers
-
What Types of Measurements Can I Perform Beyond Basic TDR?
The integrated 10GHz power splitter, fed by a 10.5GHz fast-edge pulse generator, enables:
- Frequency response analysis (FRA) for probe characterisation
- Vector network analysis (VNA) for S21 insertion loss
- Transmission line parameter extraction, including dielectric constant
-
Is the J2154A Suitable for Production Testing Environments?
Yes. It is compact, runs on USB-C power. It suits production line impedance verification, incoming inspection of cables/connectors, and quality control of PCB coupons and finished assemblies.
-
What's Included in the J2154A Package?
Each J2154A includes:
- TDR module
- Picotest TDR Demo Trace Board for learning and validation
- USB-C power cable
- Two BNC-SMA 12″ PDN cables
It comes with a one-year warranty.
-
Can the J2154A Measure Cable Lengths and Dielectric Constants?
Yes. By analysing the time-domain reflections you can calculate cable/trace lengths, characteristic impedance and the dielectric constant of PCB materials. This is useful for materials characterisation and design validation.
-
How Do I Calibrate the J2154A for Accurate Measurements?
Connect known impedance standards (open, short, load) to set measurement references. Compatible TDR probes can make this simpler; the Picotest P2104A, for example, ships with a calibration board.
-
What Oscilloscopes Are Compatible with the J2154A PerfectPulse TDR?
The J2154A works with any 50Ω oscilloscope that supports math expressions, including Tektronix 4, 5 and 6 Series MSO scopes with TDR software. The J2154A generates the TDR signals and your oscilloscope provides the display and analysis.
-
Can I Measure Both Single-ended and Differential Impedance with This Instrument?
Yes. Use connectors 1&2 for single-ended measurements (typically 50Ω), or connectors 1&3 with 2&4 for differential TDR analysis of high-speed digital pairs.
-
What's the Spatial Resolution for Detecting Impedance Discontinuities?
About 164 mil (4.16mm) on FR4. This detects small impedance variations from via transitions, connector launches or PCB manufacturing tolerances.
-
How Does the J2154A Compare to Traditional Sampling TDR Instruments?
Unlike a benchtop sampling TDR, the J2154A is portable, runs on USB power and works with your existing oscilloscope.
No questions match your search.