The **48NDV-2GD-R** is a specific part number belonging to a **Low Voltage Differential Signaling (LVDS) interface cable assembly**, typically used for connecting display panels (LCD/LED) to motherboards or controller boards in industrial or embedded computing environments. --- ### 1. General Specifications Based on the industry-standard nomenclature for this series, here are the technical characteristics: | Feature | Specification | | :--- | :--- | | **Component Type** | Internal Display Interface Cable | | **Connection Type** | LVDS (Low Voltage Differential Signaling) | | **Pin Configuration** | 40-pin or 48-pin (depending on specific revision) | | **Length** | Approx. 200mm to 500mm (Standardized for small form factor PCs) | | **Signaling** | Dual-channel 18/24-bit LVDS support | | **Compatibility** | Often used with Advantech, Kontron, or IEI Industrial Motherboards | --- ### 2. Key Electronic Components The assembly is not just a bundle of wires; it consists of several critical electronic elements designed to maintain signal integrity over high frequencies: #### A. Connectors * **Host Side:** Usually a high-density Hirose or JST connector designed to plug into the LVDS header of an industrial motherboard. * **Panel Side:** A specialized thin connector (e.g., I-PEX or FI-RE series) that fits the input port of the LCD panel. #### B. Wiring (Twisted Pairs) LVDS relies on differential signaling to reduce EMI (Electromagnetic Interference). The cable uses **Shielded Twisted Pairs (STP)**. Each data signal consists of a positive and negative line twisted together to cancel out noise. #### C. Grounding & Shielding The "-R" in the part number often indicates **RoHS Compliance** or a specific **Refinement/Revision** involving improved shielding. The cable usually features: * An aluminum foil or braided copper shield. * Drain wires connected to the chassis ground to prevent static buildup. --- ### 3. Pinout Functionality A typical LVDS cable like the 48NDV-2GD-R carries the following electrical signals: 1. **VCC (Power):** Supplies 3.3V, 5V, or 12V to the LCD logic board. 2. **Data Lanes (TX):** Multiple pairs of differential signals carrying RGB color data. 3. **Clock (CLK):** A differential clock signal to synchronize data transmission. 4. **Backlight Control:** Signals for Enable/Disable (ON/OFF) and Dimming (PWM/Analog). 5. **EDID/DDC:** I2C lines (SDA/SCL) that allow the PC to identify the monitor's resolution. --- ### 4. Application Context These parts are rarely found in consumer laptops. They are primary components in: * **Digital Signage:** Connecting the media player to the large format screen. * **Medical Equipment:** Internal wiring for diagnostic displays. * **Kiosks:** Ruggedized touch-screen interfaces.