Upstream and downstream

April 3, 2006.

PROMAX-26 DOCSIS analyser Upstream and Downstream

The PROMAX-26 communicates with the CMTS and shows the most important information related to the transmission: frequencies assigned in the upstream and downstream, signal quality in the downstream (power, BER, MER), power transmitted by the modem and attenuation in the return band.

The upstream attenuation is a very important parameter and the installer must verify if this parameter is within the specified range.

Return band attenuation

Share :

PROMAX is a leading manufacturer of test and measurement systems, broadcast and TV signal distribution equipment. Our product lines include measuring instruments for cable TV, satellite TV, broadcast, wireless and fibre optics networks, FTTH and GPON analyzers. DVB-T modulators, IP streamers or IP converters (ASI, DVB-T) are among the company’s latest developments.

Interesting links

PROMAX-26 TV Cable and Data Analyser

Upstream and downstream

MER and Constellation

Spectrum Analysis

Packet loss ratio

Channel Searching

Channel Qualification

Datalogger mode

More information...