Improves SERDES Testing – Test Pre-Silicon – EDA Kit Friendly
ISI-112 Loss Modeling Platform Set
Precision Test Platform for 112 Gbaud PAM-4 SERDES Systems
The ISI-112 platform delivers calibrated loss for high-speed SERDES testing at 112 Gbaud PAM-4. Designed for use in pre-silicon modeling and DOE-based characterization, it produces true ISI through physical loss (dielectric, skin effect, conductor)—not reflections. With 16 calibrated differential traces and extender boards from 0.5 dB to 3 dB, engineers can build loss conditions up to –35 dB with 1 dB resolution.
Connector Types Available: 1.85mm | 1.35mm | 1.00mm | Download Datasheet >
Features:
- Supports 112 Gbaud PAM4 SERDES characterization
- Clean loss profile to 70 GHz
- Selectable IL: –1 dB to –35 dB @ 26.56 GHz
- COM metrics and S-parameters included
- 4 test fixtures + 5 extender boards
- Ultra-low weave laminate (no group delay noise)
- Optional 500 fs low-skew matched cables
- NIST traceable impedance reports included
- Web-based training session with WRT engineer
What's Included:
- 4 assembled ISI boards (16 stripline differential pairs each)
- 5 extender boards: 0.5, 1, 2, 3 dB IL at 26.56 GHz
- S-parameter library (DC included)
- COM metrics
- Rugged case
- Web-based product training
- Optional: Ultra-low skew cable pair (0.35 ps skew)
Product Details
Part Number: P/N 917-0001-00
Model Name: ISI-112 Advanced SERDES Loss Platform Set
Supported Data Rates: 10–56 Gbps (optimized for 112 Gbaud PAM-4)
Connector Type: 1.85mm vertical launch female, compression mount, replaceable
Electrical Specifications – ISI-112 Platform
| Parameter | Value |
|---|---|
| PC Board Material | Low loss |
| Typical Insertion Loss | See Table 3 (excludes cable losses) |
| Return Loss (typical) | 22 dB at 56 GHz |
| Connector Type | 1.85mm vertical launch female, compression mount, replaceable |
| Insertion Loss (Max) | 1.6 dB (0.5 m), 2.8 dB (1.0 m) |
| Return Loss (Min) | 14.5 dB |
| Intra-pair Skew | 5 degrees (0.35 ps) |
| Input Impedance | 50 Ohms |
| Max Input Voltage | Not specified |
| Torque | 7–10 in·lbf (0.8 to 1.1 N·m) |
| Compliance | RoHS Directive 2011/65/EU |
Insertion Loss vs. Trace Length (26.56 Gb/s)
| IL (dB) | Length (in) | Length (mm) | IL (dB) | Length (in) | Length (mm) |
|---|---|---|---|---|---|
| -1 | 1.1 | 28.4 | -14 | 15.6 | 396.7 |
| -2 | 2.2 | 56.6 | -16 | 17.9 | 453.6 |
| -3 | 3.3 | 85.1 | -18 | 20.1 | 510.9 |
| -4 | 4.5 | 113.3 | -20 | 22.3 | 566.9 |
| -6 | 6.7 | 170.2 | -22 | 24.5 | 623.6 |
| -8 | 8.9 | 226.8 | -24 | 26.8 | 680.5 |
| -10 | 11.2 | 283.5 | -29 | 32.4 | 822.2 |
| -12 | 13.3 | 340.1 | -35 | 39.1 | 922.1 |
Optional Matched Cable Pair Specifications
| Parameter | Specification |
|---|---|
| Connector Type | 1.85mm male on both ends |
| Cable Type | Blue DXM086 coaxial, 1 meter |
| Skew | 0.35 ps (5 degrees) |
| Return Loss | ≥16 dB through 50 GHz |
| Bandwidth | No-modes through 56 GHz |
| Identification | Red/Green heat shrink, center label, additional heat shrink at 220 mm |
| Accessories | IL/RL graphs and measured S-parameter files (USB) |
| Warranty | 3-year replacement guarantee |
| Compliance | RoHS Directive 2011/65/EU (with amendments) |
