The Ericsson TT4021 Redundancy Controller has been designated End of Life (EOL) by the manufacturer
Here is a small selection of possible replacement units.
Ericsson TT4021 MPEG-2 Redundancy Controller
The Ericsson TT4021 Redundancy Controller provides 1+1 redundancy switching combined with the
advanced error detection and monitoring capabilities of the TT4000 transport stream
The TT4000 Transport Stream Monitoring family is designed to fulfil the increased need for monitoring and analysis of MPEG-2 networks and higher uptime expectations of service providers. The units are versatile, with design features aimed at real-time monitoring applications in all MPEG-2 markets. The TT4021 utilizes this technology and flexibility to provide a simple cost-effective 1+1 self managed redundancy switch for any MPEG-2, MPEG-4, or Windows Media® 9/ VC-1 transport stream.
TT4021 Redundancy Controller
The highest level of redundancy achievable is 1+1 redundancy. The Ericsson TT4021 Redundancy Controller provides this redundancy switching level, combined with the advanced error detection and monitoring capabilities. Rather than monitor the health of individual hardware units the TT4021 actually monitors the incoming transport stream for health giving a more reliable and robust redundancy switch.
The base unit has 3 variants depending on the type of switching required: Base-band, IF or RF.
Key Standard Features include:
DVB ASI and other input options.
Robust relay based switching: signal integrity independent of power supply.
Spare input source is check before switching.
2 x 1 real-time TS monitor switching.
User-friendly web interface.
Error detection according to ETR290 specification.
PSI / SI (DVB) and PSIP (ATSC) table analysis including MIP detection.
DVB ASI/M2S (spread and burst byte)
BNC (female), 75 ohm
70 or 140 MHz
5 - 30.5 Mbaud
13V or 18V
QAM Demodulator (only Annex A)
Tuner frequency range: