Differential impedance, jitter, and loss limits
Use one tab at a time. Spacing, height, and length are millimetres. Jitter is picoseconds or nanoseconds. Frequency is megahertz or gigahertz.
Your result
Applied model Dual-Dirac total jitter. The BER assumption is 1e-12 only. 14.069 is twice the Q factor for that rate.
Total jitter 24.069 ps
Tj = Dj + 14.069 * Rj for BER 1e-12. Nanoseconds are multiplied by 1000 when shown in picoseconds.
Dj and Rj use the unit you selected. 14.069 applies only at BER 1e-12. Other error rates are not calculated.
Worked examples
- Edge spacing over heightDifferential impedance uses the spacing-to-height ratio. Length is labeled and not used in that equation.Load these inputs
- Total jitter at BER 1e-12Dj and Rj are picoseconds. The coefficient 14.069 is only for that bit-error rate.Load these inputs
- Loss coefficients without a unitc1 and c2 keep their entered numbers. The sum is not shown as insertion loss.Load these inputs