Highly Precise
Skew Matched
Cable Assemblies
Less than 1 ps skew between the two cables — guaranteed upon shipment. Purpose-built for compliance testing of differential digital signals: USB, HDMI, BERT, and jitter measurement. Four variants from 26.5 to 67 GHz, supplied as matched pairs.
Why Skew Matching Matters
In differential signal transmission, variability in propagation delay between the two signal cables — known as skew — directly causes jitter. Even small skew differences degrade eye diagrams and increase bit error rates in high-speed digital measurements.
The 6 Series is designed and manufactured to guarantee less than 1 ps skew between the two cables in each pair. Every assembly is skew-certified before shipment — making it the precision choice for USB, HDMI, and serial bus compliance testing.
- ✓Skew < 1 ps between the two cables — certified at shipment
- ✓Phase deviation < 0.3° between pair cables at 1 GHz
- ✓Four variants: 26.5, 40, 50, and 67 GHz
- ✓50 Ohm impedance on all variants
- ✓Supplied as matched pairs (two cables per set)
- ✓Assembly lengths 200–1,500 mm
- ✓Operating temperature -30 to +85 °C
- ✓Ships in 11 business days — RoHS compliant
Major Applications
The 6 Series is the standard choice wherever differential signal integrity demands precision-matched cable pairs.
USB Compliance Testing
Precise skew matching essential for USB 3.x / 4.0 differential pair measurement
HDMI Testing
Sub-picosecond skew for HDMI compliance and characterization
BERT Measurement
Bit error rate testing requires matched signal paths
Jitter Analysis
Skew is a root cause of jitter — 6 Series eliminates cable-induced jitter
4 Cable Variants
All variants share 50 Ohm impedance, <1 ps skew, and are supplied as matched pairs. Choose by maximum operating frequency.
Lowest loss in 6 Series — 6.0 mm OD
40 GHz — compact 4.1 mm OD
50 GHz — slim 3.7 mm OD
Highest frequency — 67 GHz, lightest at 17 g/m
Technical Comparison
All specifications typical at 25 °C. All variants supplied as matched pairs. RoHS compliant.
| Model | Max Freq. | OD | Mass | VSWR | Ins. Loss | Prop. Delay | Skew | Length Range | Connectors |
|---|---|---|---|---|---|---|---|---|---|
| MWX621 | 26.5 GHz | 6.0 mm | 64 g/m | 1.33 | 1.4 dB/m | 4.40 ns/m | < 1 ps | 200–1,500 mm | SMA, 3.5 mm, N |
| MWX641 | 40.0 GHz | 4.1 mm | 35 g/m | 1.43 | 3.0 dB/m | 4.35 ns/m | < 1 ps | 200–1,500 mm | 2.92 mm |
| MWX651 | 50.0 GHz | 3.7 mm | 29 g/m | 1.43 | 3.8 dB/m | 4.36 ns/m | < 1 ps | 200–1,500 mm | 2.4 mm, 2.92 mm |
| MWX661 | 67.0 GHz | 2.6 mm | 17 g/m | 1.43 | 5.6 dB/m | 4.38 ns/m | < 1 ps | 200–1,500 mm | 1.85 mm |
* Skew <1 ps between the two cables in each pair, certified at shipment. Bending or pulling with strong force may cause skew to go out of alignment. Typical values at 25 °C for reference only.
The EMF Series Family
The full EMF product family covers RF and microwave cable assemblies for every test and measurement application.
Ready to order or need technical advice?
Koto Electronics is the authorized Israeli representative of Junkosha Inc. Contact us for pricing, availability, and custom specifications.