CATV EQUIPMENT     Room Optical Receiver 1310nm 1、Summary Be developed through several years' advanced experiences of CATV HFC network transmission equipment. Mainly used in transmitting optical fiber of TV video, digital, voice data signal far away. 19" 1U standard machinery construction, forward panel with combustion and drawbench. The quality index has improved, set with high-reliability power switch, it is the first choice of big and medium size CATV HFC network. 2、Performance Characteristic ● Adopt PHILIPS, PHOTON or E-O high-sensitivity PIN detector and import PHILIPS or MOTOROLA low-noisy push-pull amplifier module. Adopt import PHILIPS or MOTOROLA doubler power amplifier module in output department. ● Plug-in insert Dual-Filter and return reverse optical transmit parts, develop the return reverse access conveniently. ● 19" 1U standard machinery, forward panel sixth-order optical power indication, modulating output level and lean beam at forward panel. 3、Performance Parameters ★ Special Notice The performance parameters of this manual according to GY/T143-2000 < Network Entry Technical Requirements and Measurements Method of CATV laser Optical Transmitter and Receiver > ★ Testing Environment 1. Below part of optical receiver: Standard optical fiber together with transmitter make the testing circuit. Set with 59 PAL-D analog TV channel signal at range of 550MHz in the fix index loss of circuit. Transmit digital modulation signal at rang of 550MHz~862MHz, the electricity level (8 MHz bandwidth) digital signal is lower 10dB than analog signal of carrier electricity level; the input of optical receiver is -5dBm, output level of RF is 90dBuV with lean beam of 9dB output. 2. Above part of the optical transmitter: Flatness in circuit to noisy-power ratio is get to the range of circuit index of above optical transmitter and receiver, measure C/ CTB, C/ CSO, C/ N. ★ Friendly Notice Suggest you setting the RF signal at the range of 6~9dB lean beam output. 4、Principle Drawing 　 HANGZHOU SUMLO INDUSTRIAL CO., LTD 　 ADD:RM 706-707,BAIYUN BUILDING-2#,NO.190-198 TIANCHENG ROAD,     HANGZHOU,CHINA TEL:0086571-86950579      FAX:0086571-86962513 E-mail:info@sumlocable.com    sumlo@china.com