激光發(fā)射機(jī) 雙波段CATV+RF發(fā)射機(jī)+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 /Mobile 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
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Technical Specifications |
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Model Number |
EMLT-1550-WM-08 |
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Technical Specifications |
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Transmission Range |
Up to 65km |
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Laser Wavelength Range |
1550nm ± 10nm (standard), available with 40 DWDM wavelengths |
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Optical Output Power |
8dBm minimum |
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Number of Optical Output |
2, separate output for CATV and RF |
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Noise Bandwidth |
45 to 860MHz for CATV band and 950 to 12000MHz for RF band |
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Carrier Noise Ratio (CNR) |
> 53dB (Direct), >52dB (w/EDFA) |
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Composite Second Order (CSO) |
-63dB minimum |
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Composite Triple Beat (CTB) |
-63dB minimum |
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SBS Suppression Level |
+13.5dBm, 16.5dBm (Optional) |
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RF Gain / OMI Adjustment Range |
+8dB to -8dB for CATV band |
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Input RF Power Level |
15 - 25 dBmV for CATV band |
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Frequency Plan |
CATV + QAM + RF |
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RF Frequency Range |
45MHz - 870MHz for CATV; 950MHz-15,000MHz for RF |
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Flatness in Frequency Range |
+/- 0.75dB in CATV band, +/- 3dB for RF band |
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Input RF Impedance |
75 Ohm for CATV, 50 Ohm for RF Band |
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Input RF Return Loss |
16 dB minimum for CATV, 10dB for RF Band |
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Mechanical Specifications |
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Operating Temperature Range |
0°C to +50°C |
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Storage Temperature Range |
-40°C to +70°C |
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Power Consumption |
120 W maximum |
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Power Supply |
80 -240 VAC, 43 - 62 Hz |
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Housing Dimensions |
19″ x 14″ x 1.75″ |
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Front Panel Display |
LCD |
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Control / Monitoring |
DFB laser temperature, output power |
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Alarm Status |
Over temperature, over current |
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Optical Connectors |
F Type for CATV band, SMA Female for RF band |
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