激光发射机 双波段CATV+RF发射机+8dBm The EMLT-1550-WM series of laser transmitters is designed for use with dual-bａnd transmission applications. Based on our patented design, the EMLT-1550-WM incorporates two sets of laser transmitters with 1U rack mount chassis. There are two transmission bands: a standard CATV bａnd and RF bａnd with 12,000MHz bandwidth. The CATV bａnd transmitter operates as a standard HFC laser transmitter with a frequency range from 45MHz to 860MHz. It is designed for electrical to optical conversion of CATV signals such as AM-VSB, FM and QAM signals. It can transmit up to 65km in distance, while providing excellent CNR, CSO and CTB performance. The RF bａnd transmitter can perform electrical to optical conversion from 950MHz to above 12,000MHz. Depending on the model, EMLT-1550-WM can also be used for transmitting almost any type of RF modulated signals over optical fiber that include Microwave over Glass, satellite / IF signal, microwave link, WiMax / signals over fiber. EMLT-1550-WM series is highly versatile, and high-bandwidth transmission solution for numerous RF signal over optical fiber applications. They are available either single output or dual output model. The output of dual out put can be combined into single output fiber. Features: - Slim 1U height rack mountable housing - Two independent transmitter design, each incorporating: * High power, narrow linewidth DFB laser module * Broadbａnd external modulator -Dual-bａnd transmission: * CATV: 45MHz to 860MHz for analog and QAM channels * RF: 950MHz to 12,000MHz - SBS suppression level selectable between +13dBm to +16dBm - Separate input port for CATV and RF - 65km standard transmission range - AGC (Automatic Gain Controls) Input Control for CATV band Technical Specifications Model Number EMLT-1550-WM-08 Technical Specifications Transmission Range Up to 65km Laser Wavelength Range 1550nm ± 10nm (standard), available with 40 DWDM wavelengths Optical Output Power 8dBm minimum Number of Optical Output 2, separate output for CATV and RF Noise Bandwidth 45 to 860MHz for CATV bａnd and 950 to 12000MHz for RF bａnd Carrier Noise Ratio (CNR) > 53dB (Direct), >52dB (w/EDFA) Composite Second Order (CSO) -63dB minimum Composite Triple Beat (CTB) -63dB minimum SBS Suppression Level +13.5dBm, 16.5dBm (Optional) RF Gain / OMI Adjustment Range +8dB to -8dB for CATV bａnd Input RF Power Level 15 - 25 dBmV for CATV bａnd Frequency Plan CATV + QAM + RF RF Frequency Range 45MHz - 870MHz for CATV; 950MHz-15,000MHz for RF Flatness in Frequency Range +/- 0.75dB in CATV band, +/- 3dB for RF bａnd Input RF Impedance 75 Ohm for CATV, 50 Ohm for RF Bａnd Input RF Return Loss 16 dB minimum for CATV, 10dB for RF Bａnd Mechanical Specifications Operating Temperature Range 0°C to +50°C Storage Temperature Range -40°C to +70°C Power Consumption 120 W maximum Power Supply 80 -240 VAC, 43 - 62 Hz Housing Dimensions 19″ x 14″ x 1.75″ Front Panel Display LCD Control / Monitoring DFB laser temperature, output power Alarm Status Over temperature, over current Optical Connectors F Type for CATV band, SMA Female for RF bａnd

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