TAS 8250 has added key channelized HFC network impairments, including bandlimited noise, QAM-16, QPSK, AM, and CW interferers. The bandlimited noise impairment accurately models ingress classified as noise within a narrow band of frequencies which is common on the HFC network and can destroy data or voice communications. The QAM-16 and QPSK interferers model interference from other data traffic on the cable network while the AM and CW interferers model spurious signals present on the cable network. Any communications device that operates over the HFC network must be tested in the presence of these impairments to ensure acceptable performance.
TAS 8250 can also now be configured to emulate two different cable system frequency plans the 5 - 42/50 - 860 MHz system commonly found in the U.S. and the 5 - 65/80 - 860 MHz system commonly found in Europe. By testing products destined for either type of cable system with a single instrument, users can easily correlate test data between development groups and facilities, thus reducing development costs.
TAS 8250 also works with the TAS FLEX5/Cable RF Channel Emulator and SmartBits network performance analyzer to provide even more capabilities for testing cable network communications products. Combined with TASKIT/Cable, these instruments form a complete, automated test system for cable modems and CMTS, which greatly simplifies performance characterization and DOCSIS certification testing.