Notes:

1)TX Fault is an open collector/drain output, which should be pulled up with a 4.7K – 10KΩ resistor on the host board. Pull up voltage between 2.0V and VccT, R+0.3V. When high, output indicates a laser fault of some kind. Low indicates normal operation. In the low state, the output will be pulled to < 0.8V.

2)TX disable is an input that is used to shut down the transmitter optical output. It is pulled up within the module with a 4.7 – 10 K Ω resistor. Its states are:

Low (0 – 0.8V):

Transmitter on

(>0.8, < 2.0V):

Undefined

High (2.0 – 3.465V):

Transmitter Disabled

Open:

Transmitter Disabled

3)Mod-Def 0,1,2. These are the module definition pins. They should be pulled up with a 4.7K – 10KΩresistor on the host board. The pull-up voltage shall be VccT or VccR (see Section IV for further details). Mod-Def 0 is grounded by the module to indicate that the module is present Mod-Def 1 is the clock line of two wire serial interface for serial ID Mod-Def 2 is the data line of two wire serial interface for serial ID

4)LOS (Loss of Signal) is an open collector/drain output, which should be pulled up with a 4.7K – 10KΩ resistor. Pull up voltage between 2.0V and VccT, R+0.3V. When high, this output indicates the received optical power is below the worst-case receiver sensitivity (as defined by the standard in use). Low indicates normal operation. In the low state, the output will be pulled to < 0.8V.

5)VeeR and VeeT may be internally connected within the SFP module.

6)RD-/+: These are the differential receiver outputs. They are AC coupled 100Ω differential lines which should be terminated with 100Ω (differential) at the user SERDES. The AC coupling is done inside the module and is thus not required on the host board. The voltage swing on these lines will be between 370 and 2000 mV differential (185 – 1000 mV single ended) when properly terminated.

7)VccR and VccT are the receiver and transmitter power supplies. They are defined as 3.3V ±5% at the SFP connector pin. Maximum supply current is 300mA. Recommended host board power supply filtering is shown below. Inductors with DC resistance of less than 1 ohm should be used in order to maintain the required voltage at the SFP input pin with 3.3V supply voltage. When the recommended supply-filtering network is used, hot plugging of the SFP transceiver module will result in an inrush current of no more than 30mA greater than the steady state value. VccR and VccT may be internally connected within the SFP transceiver module.

8)TD-/+: These are the differential transmitter inputs. They are AC-coupled, differential lines with 100Ω differential termination inside the module. The AC coupling is done inside the module and is thus not required on the host board. The inputs will accept differential swings of 500 – 2400 mV (250 – 1200 mV single-ended), though it is recommended that values between 500 and 1200 mV differential (250 – 600 mV single-ended) be used for best EMI performance.

6

2008/1/15

 

Rev. 0A

DELTA ELECTRONICS, INC.

www.deltaww.com

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Delta Electronics LCP-1250 CWDM manual Delta ELECTRONICS, INC
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LCP-1250 CWDM specifications

Delta Electronics, a prominent leader in power and thermal management solutions, has developed the LCP-1250 CWDM (Coarse Wavelength Division Multiplexing) system, designed to enhance optical networking capabilities. This innovative solution is central to modern data centers and telecommunications, enabling efficient data transmission by using different wavelengths of light to send multiple signals over a single optical fiber.

One of the main features of the LCP-1250 CWDM is its exceptional capacity to support multiple channels. By leveraging the CWDM technology, the system can transmit up to 18 channels, each operating at various wavelengths in the range of 1270nm to 1330nm. This feature allows for the simultaneous transfer of multiple data streams, significantly increasing bandwidth without the need for additional fibers. Consequently, organizations can maximize the use of their existing infrastructure, leading to reduced operational costs.

Another key characteristic of the LCP-1250 is its scalability. The modular design enables users to easily expand their networks according to growing demands. As data traffic increases, additional capacity can be integrated without requiring massive overhauls or replacements. This flexibility is essential for businesses aiming to future-proof their networking capabilities and adapt to evolving market conditions.

Moreover, Delta’s LCP-1250 utilizes advanced optical components that enhance signal quality and minimize loss. The system supports a wide variety of applications, including enterprise interconnects, metropolitan area networks, and data center interconnections. The high performance and reliability of the LCP-1250 make it an ideal solution for critical data transmission needs.

In terms of management and monitoring, the LCP-1250 comes equipped with user-friendly interfaces and software tools that facilitate real-time network performance assessment. This allows operators to monitor parameters like signal strength, channel status, and network health, leading to proactive troubleshooting and optimized performance.

The LCP-1250 CWDM also adheres to stringent environmental and regulatory standards, ensuring not only efficient operation but also sustainability. Delta Electronics focuses on energy efficiency, which helps reduce the carbon footprint of data centers while maintaining high performance levels.

In conclusion, the Delta Electronics LCP-1250 CWDM system stands out for its high capacity, scalability, advanced optical technology, and ease of management. As organizations continue to seek innovative solutions for their networking challenges, the LCP-1250 positions itself as a reliable choice for efficient optical communication.
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