The **SES-2HD-R/E** is a professional-grade electronic component typically used in serial digital interface (SDI) video distribution systems. It is part of the **SES Series** by manufacturers like **Canoga Perkins** or specialized broadcast equipment providers, serving as a high-performance fiber optic transmitter or receiver for HD-SDI signals. --- ### 1. Core Technical Specifications The electronic architecture is designed to handle high-bandwidth video data with minimal jitter and signal degradation. | Feature | Specification | | :--- | :--- | | **Interface Type** | SDI, HD-SDI (High Definition Serial Digital Interface) | | **Data Rate** | Up to 1.485 Gbps (SMPTE 292M) | | **Fiber Connector** | ST or SC (usually Single-mode) | | **Electrical Connector** | BNC (75 Ohm) | | **Power Input** | Typically 5V DC or 12V DC (model dependent) | | **Operating Distance** | Up to 20km - 40km (depending on fiber type) | --- ### 2. Key Electronic Components The internal circuitry of the SES-2HD-R/E consists of several critical stages to ensure signal integrity: #### A. The Reclocker Digital video signals degrade over long copper cables. The **Reclocker** circuit: * Extracts the clock from the incoming data stream. * Suppresses accumulated jitter. * Retimes the signal before it is converted to light (transmitter) or output to BNC (receiver). #### B. The Optical Engine * **Transmitter (E-side):** Uses a Laser Diode (LD) to convert electrical BNC signals into light pulses. * **Receiver (R-side):** Uses a PIN Photodiode to convert incoming light pulses back into an electrical signal. #### C. Signal Equalization The input stage features an **Adaptive Cable Equalizer**. This compensates for the high-frequency loss caused by long lengths of coaxial cable (BNC) before the signal reaches the processing unit. --- ### 3. Application Workflow The "R/E" designation usually refers to the functional pair: 1. **"E" (Electrical to Optical):** Converts the BNC HD-SDI input into a fiber optic signal for long-distance transport. 2. **"R" (Optical to Electrical):** Receives the fiber signal and converts it back into a standard BNC HD-SDI output. ### 4. Diagnostic Indicators (LEDs) Most units feature onboard diagnostic electronics: * **PWR:** Indicates the internal DC-DC converter is functioning. * **SDI Lock:** Confirms the reclocker has successfully locked onto a valid video frequency. * **Optic Signal:** Confirms the photodiode is receiving light within the required decibel (dB) range. ---