Mixed Analog-Digital Access

1. VPItransmissionMaker™ has been specially developed to design service upgrades for cable access systems.
2. This example shows the addition of ten 30-Mbit/s digital channels to a 77-channel analog system.
3. Interactions between the analog and digital channels caused by the optical plant can be quantified using dedicated instrumentation such as CTB, CTO analysis and constellation diagrams.
4. A wide range of electrical signal processing modules allows novel modulation formats, coding schemes, and analog-digital-analog conversion schemes to be trialed.
5. VPItransmissionMaker™ Cable Access is fully interoperable with VPItransmissionMaker™ WDM and VPIcomponentMaker™ Optical Amplifiers.