Harmonic Analog Return Receiver

Harmonic’s HRR 4104 is a quad return path receiver for the HLP 4200 series and above broadband chassis. The HRR 4104 uses state-of-the-art technologies to provide many distinct features including high packing densities, flexible configurations, and high RF output level. A single HLP 4200 chassis can hold forty return path receivers (ten HRR 4104 units) in three rack units. Harmonic’s HRR 4104 return path receiver allows operators to build compact, complete, two-way, interactive broadband communications networks. In a redundant pair configuration, one receiver in an HRR 4104 is used for primary fiber paths and a second receiver for the backup fiber paths. The RF outputs of the two units are combined.  The primary unit mutes the RF output of the backup unit unless the primary unit is in alarm. If the primary unit is in alarm, the backup unit is activated and the primary unit is muted. The  HRR 4104  has  the added  benefit  of offering  hot swapping, which allows the card to be added or removed without disrupting  service  and improves  overall  network reliability. Each HRR 4104 has four completely independent optical receivers.

The use of the HRR 4104 in a network offers the operator several advantages for expanding network services and increasing system reliability:

• Ultra high package density (ten HRR 4104 in a three   rack unit with 40 return path receivers) provides better use of limited head-end space, and lowers powering costs.

• Customizable protection options and easy upgrade to protection switching allow operators to easily adapt protection requirements without disrupting service