激光發(fā)射機(jī) 標(biāo)準(zhǔn)范圍光發(fā)射機(jī) 65km范圍 +9dBm輸出 EMLT-1550-SR series laser transmitters are designed for use in HFC, RFoG and FTTH applications. EMLT-1550-SR series transmitters are a cost-effective and versatile transmission solution for HFC/RFoG/FTTH networks regardless of architecture. EMLT-1550-SR transmitters incorporate a zero-chirp external modulator and pre-distortion circuit which allow 65 km transmission range, while maintaining a high OMI level and excellent CSO and CTB performance. The launch power level can be adjusted from +13.5 dBm to +16.5 dBm. EMLT-1550-SR transmitters can support up to 77 NTSC analog channels. Designed to be digitally ready, the transmitters can also be loaded with additional QAM modulated data or HDTV channels.QAMnet EMLT-1550-SR transmitters are available in four output power level versions: +6 dBm, +7 dBm, +8 dBm and +9 dBm. Features: - Narrow linewidth DFB laser (< 1MHZ) - External optical modulator - Adjustable SBS level from +13 dBm to +16 dBm - AGC (Automatic Gain Control) and Manual Gain Control mode - Excellent performance of CNR, CSO and CTB Technical Specifications | Model Number | EMLT-1550-SR-09 | | | Technical Specifications | | | Transmission Range | 65km standard, can be extended to 90km | | | Laser Wavelength Range | 1550nm ± 10nm (standard) | | | Optical Output Power | 9dBm minimum | | | Number of Optical Output | 1 standard, 2 optional | | | Noise Bandwidth | 4 MHz | | | Carrier Noise Ratio (CNR) | 52dB @ 0dBM received power | | | Composite Second Order (CSO) | -63dB minimum | | | Composite Triple Beat (CTB) | -63dB minimum | | | SBS Suppression Level | User setting of +13.5dBm, 16.5dBm | | | RF Gain / OMI Adjustment Range | +6dB to -6dB | | | Input RF Power Level | 8 - 20 dBmV | | | Frequency Plan | NTSC 77 channels + QAM channels | | | RF Frequency Range | 45 MHz to 870 MHz | | | Flatness in Frequency Range | ± 0.75dB over full range | | | Input RF Impedance | 75 Ohm | | | Input RF Return Loss | 16 dB minimum | | | Mechanical Specifications | | | Operating Temperature Range | 0°C to +50°C | | | Storage Temperature Range | -40°C to +70°C | | | Power Consumption | 75 W maximum | | | Power Supply | 80 -240 VAC, 43 - 62 Hz | | | Housing Dimensions | 19 | | | Front Panel Display | LCD | | | Control / Monitoring | DFB laser temperature, output power | | | Alarm Status | Over temperature, over current | | | Optical Connectors | SC/APC | | | |