罗德与施瓦茨RS Signal GeneratorSFD DOCSIS
Single channel DOCSIS Signal Generator for DOCSIS3.1 downstream and upstream
Key Facts
Frequency range in downstream: 47 MHz to 1218 MHz (extendable to 1794 MHz)
Frequency range in upstream: 5 MHz to 204 MHz
DOCSIS3.1, DOCSIS3.0, J.83/A/B/C and analog TV
Up to 192 MHz signal bandwidth for DOCSIS3.1
ARB generator bandwidth up to 200 MHz
Signal interference and distortion simulation
Brief Description
The DOCSIS®3.1 standard is driving the trend in cable TV networks toward all-IP. The R&S®SFD generates a DOCSIS 3.1 OFDM broadband signal as well as the previous cable signals such as DOCSIS 3.0, digital and analog TV channels in the downstream. In the upstream, it generates a DOCSIS 3.1 or DOCSIS 3.0 signal.
The R&S®SFD produces signals for DOCSIS 3.1, DOCSIS 3.0, digital cable TV in line with J.83/A/B/C and analog cable TV. Its downstream frequency range is 47 MHz to 1794 MHz for DOCSIS 3.1 and 47 MHz to 1218 MHz for DOCSIS 3.0 and TV. Within this range, the R&S®SFD generates a DOCSIS 3.1 channel with up to 192 MHz bandwidth. The level, frequency, forward error correction (FEC) and constellation of this channel can be set. The R&S®SFD can alternatively produce a digital, QAM-modulated or analog TV signal. The DOCSIS 3.1 channel or digital TV channel is modulated in realtime. The data to be transmitted can be fed in via IP or internally generated by the R&S®SFD.
The upstream frequency range is 5 MHz to 204 MHz. Within this range, a DOCSIS 3.1 orthogonal frequency division multiple access (OFDMA) signal can be generated in realtime. A DOCSIS 3.0 TDMA or CDMA signal can be produced in realtime in the 5 MHz to 85 MHz range.