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 |