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	Optical Receiver                       Main Function          HD-860 R CATV optical receiver is an optical inter-  face unit in CATV bidirectional network which comple-  tes the transmission process from optical wave to RF  or conversely.It has a -20dB test port and one output  terminal(2splitters)with high output level that each  terminal at the level of 106(102)dBuV.The return op-  tical ports can be plug-in or off for consumer conv-  enience as well as compatible with ANTEC units.     Features   New type case made of alloy aluminum can be easily   radiated. Frequency Range of 860MHz. Using 860MHz Phillips optical receive module at   forward and Phillips powerful module at backward   to ensure a high function index of the receiver. Each output level reaches 106dBuV. The return optical unit can be plug-in or off and   compatible with ANTEC units. Using switch power supply to ensure the receiver   in long-term working reliably. Compatible with optical signal of 1310nm and   1550nm. Using light-emitting diode for indicating the Opt-   ical Power being over-low,normal or over high.	Specifications   NO. PARAMETER UNITS   REFERENCE   　NOTE  1  RF Bandwidth MHz Return Forward 可按用户要求订做 5∽35 45∽860 5∽40 50∽860 5∽65 87∽860  2  RF Return Loss  dB      ≥16    3  Optical Wavelength  nm    1290-1580    4  Optical Return Loss  dB      ≥45    5  Received Optical Power dBm  　 -5∽+2    6  RF Output Level dBuV  ≥106(102)①    7  Gain Control  dB   0∽15dB②       1dB/档  8 Equalizer  dB   0∽20dB②       2dB/档  9  Flatness  dB    　±0.75 与光发射机连60 路PAL频道，每 频道4.5%调制度, -1dBm接收 10  光链路C/N  dB   　 见表2 11  光链路CTB  dB     　-68 12  光链路CSO  dB     　-65 4