The **PPC-L157T-RXPE0E** is an industrial-grade Panel PC (PPC) manufactured by Advantech. It is designed for harsh environments, providing a combination of a high-quality display and a low-power embedded computing core. Below is a breakdown of its primary electronic components and specifications. --- ### 1. Core Computing Components The internal electronics are centered around the **Intel Atom N270** architecture, optimized for fanless operation and thermal efficiency. | Component | Specification | Description | | :--- | :--- | :--- | | **Processor (CPU)** | Intel Atom N270 1.6 GHz | A single-core processor with Hyper-Threading, ideal for HMI tasks. | | **Chipset** | Intel 945GSE + ICH7M | Handles data flow between the CPU, memory, and I/O ports. | | **Memory (RAM)** | 1x 200-pin DDR2 SODIMM | Supports up to 2GB of RAM (typically 533/667 MHz). | | **Storage Interface** | 1x CompactFlash / 1x SATA | Supports CF cards for OS booting and 2.5" HDD/SSD for data. | --- ### 2. Display and Touch Interface The front-facing electronic assembly consists of a high-resolution industrial LCD panel and a resistive touch controller. * **LCD Panel:** 15" TFT LCD with a maximum resolution of **1024 x 768** (XGA). * **Backlight:** Utilizes a CCFL (Cold Cathode Fluorescent Lamp) or LED system (depending on the specific revision), with a brightness of roughly 350 cd/m². * **Touch Controller:** 8-wire analog resistive touch screen. This allows for high accuracy and the ability to use gloves, which is standard in industrial settings. --- ### 3. Connectivity and I/O Electronics The motherboard (carrier board) integrates several controllers to manage industrial communication protocols. * **Networking:** Dual Gigabit Ethernet ports (Intel 82574L controllers) for redundant network connections. * **Serial Ports:** * 3x RS-232 ports. * 1x RS-232/422/485 port (software or jumper configurable). * **USB:** 4x USB 2.0 ports for peripherals. * **Expansion Slot:** 1x PCI slot (via a riser card) or 1x Mini PCIe slot for wireless modules or specialized I/O. --- ### 4. Power Circuitry The device features an industrial-grade power management system designed to handle fluctuations in factory power grids. * **Input Voltage:** 12V DC ~ 24V DC. * **Protection:** Includes over-voltage and over-current protection. * **Power Consumption:** Typically around 28W - 35W depending on the load. --- ### 5. Physical and Environmental Electronics * **IP Rating:** The front panel is **IP65 rated**, meaning the electronic display is protected against water jets and dust. * **Cooling:** Fanless design. The CPU dissipates heat through a large internal heatsink connected to the aluminum chassis.