return Digital Return Path Receiver Input line rate: 2.125 Gbps Two analog output channels, 5-48 MHz each -31 dBmV/Hz RF output -20 dB RF test point relative to the output (one for each output) Status monitoring via NETWatchTM of optical power and optical power alarm Advantages The use of digital return path in a network offers the operator several advantages for expanding network services and increasing system reliability: Product Description Harmonic's RDR2000 is a return digital receiver for the HTR2000D transceiver chassis. The receiver takes an optical data stream at 2.125 Gbps. The input is demultiplexed into its two component data streams. These are converted back to analog waveforms by two digital to analog (D/A) converters. Applications Plug-in card for the HTR2000D (or above) platform PIN diode receiver with -20 dBm (optical) receiver sensitivity. High-speed internet communications Pay-per-view Video-on-demand Telephony Security Alternative access Local origination Direct customer feeds Standard Configuration -20-dB RF TP Reconst. Filter RF Output D/A Limiting Amp. -20-dB RF TP Reconst. Filter RF Output Demux D/A Analog Signal Conditioning Optical Power Alarm Circuit Status Monitoring Interface Optical Power Alarm Optical Power Optical Input Optical Power TP Optical Power Alarm LED (Red if Opt. Pwr < -22 dBm) Optical Alarm Threshold Adjustment path The RDR2000 uses state-of-the-art technologies to provide highspeed capabilities, flexible configurability, and high input responsivity. The RF output bandwidth is 5-48 MHz and is DOCSIS-compliant. The RDR2000 is used in conjunction with the Harmonic NDT family of digital transmitters. The performance of a digital return transmission system is independent of link loss over the operating range of the receiver. This allows digital links to have outstanding performance over very long links. Offers increased system reliability and reduced operation costs from increased network segmentation RDR 2000 HL 2000 Series RDR 2000 Specifications Harmonic Inc. 549 Baltic Way Sunnyvale, CA 94089 Tel. 408-542-2500 Tel. 800-730-4099 Fax 408-542-2510 Optical Input Number of Fiber Optic Inputs: 1 Maximum Input: 0 dBm Minimum Input: -20 dBm Wavelength: 1250 to 1600 nm Input Line Rate: 2.125 Gbps Element Monitoring System - NETWatchTM/HEM Optical power alarm -- monitor Optical power -- monitor Power Requirements Maximum power: 12.5 W RF Output Number of Analog Outputs: 2 Passband: 5-48 MHz Output RF level1: -31 dBmV/Hz Impedance: 75 Flatness2: 10-48 MHz: 0.5 dB or less Environmental Operating temperature range: -20 to +65C Storage temperature range: -40 to +85C Physical Dimensions: 12.5"L x 0.8"W x 4.1"H Mounting: Plug-in card for the HTR2000D (or above) platform Optical Inter face Connector Type: RDR2000-AS: SC/APC RDR2000-US: SC/UPC Notes: 1. For a digitized Gaussian noise signal at 0 to -20 dBm of received average optical power. 2. When used in conjunction with the Harmonic family of digital transmitters. User Inter face RF test point connectors: Type "F" Total number of RF test point connections: 2 accessible from the front RF output test point: -20 1.0 dB Optical level test point: 1 V/mW DC power: Green LED Optical power alarm: Red LED Copyright 2000 Harmonic Inc. Harmonic continues to improve and enhance all product designs. Specifications are subject to change without notice. Harmonic and logo design, eXchange, MAXLink, METROLink, NETWatch, PWRBlazer, TRANsend, and "Redefining the Network" are trademarks of Harmonic Inc. YAGLink and PWRLink are registered trademarks of Harmonic Inc. All other names are trademarks or registered trademarks of their respective owners. 2203-01 1K 02/00