"Delta L is an Insertion Loss testing method developed by Intel specifically for the PCB industry, aiming to significantly reduce the difficulty and cost associated with measuring Differential Insertion Loss. These methods utilize standardized sample designs, making the measurement process more uniform and facilitating rapid measurements with standard test fixtures.

• Arcanum Advanced Inc. offers measurement services for the following testing methods:
• d-1 Delta L 3.0 Coupon
  -Operating frequency: Up to 20 GHz
  - Method: Delta L 3.0
  -Testing point pitch: 0.5 mm to 1.0 mm
• d-2 Delta L 4.0 Coupon
  -Operating frequency: Up to 40 GHz
  - Method: Delta L 4.0
  - Testing point pitch: 0.5 mm
• d-3 Impedance Coupon
  - Operating frequency: Up to 20 GHz
  - Testing point pitch: 0.1 mm to 3.0 mm pitch variable"