Comprehensive Product Summary – CONTEC DIO‑48D‑LPE

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### 1. Product Overview

Product Name: DIO‑48D‑LPE
Model Number: DIO‑48D‑LPE
Series: PCI Express Low Profile Digital I/O Interface Boards
Article Number: DIO‑48D‑LPE
Manufacturer: CONTEC CO., LTD. (Osaka, Japan)
Product Type: PCI Express Low Profile TTL‑level Bi‑Directional Digital Input/Output Board
Bus Interface: PCI Express Base Specification Rev. 1.0a ×1 lane
Product Category: Industrial Automation / Measurement and Control – Digital I/O Boards

The CONTEC DIO‑48D‑LPE is a compact, high‑speed, low‑profile PCI Express digital I/O interface board designed for industrial and laboratory automation systems requiring fast, reliable, and flexible TTL‑level signal interfacing. It provides 48 bi‑directional LVTTL channels, software‑configurable as inputs or outputs, and supports interrupt generation, digital filtering, and full compatibility with CONTEC’s API‑PAC(W32) and Linux driver libraries.

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### 2. Key Features

- 48‑Channel Bi‑Directional Digital I/O:
Provides 48 LVTTL‑level I/O channels, configurable in 8‑bit units for input or output. Each channel can be individually controlled by software.

- High‑Speed Response:
Non‑isolated LVTTL (positive logic) I/O with a maximum response time of 200 ns, suitable for high‑frequency digital control and monitoring.

- Interrupt Capability:
All 48 input signals can be used as interrupt sources. Interrupts can be enabled/disabled per bit, and the trigger edge (rising/falling) is software‑selectable.

- Digital Filtering:
Built‑in programmable digital filter suppresses noise and contact chattering. Filter time selectable from 0.25 µs to 131 ms in 21 steps.

- i8255 Mode 0 Compatibility:
Emulates the Intel 8255 PPI Mode 0 interface, ensuring compatibility with legacy digital I/O systems and software.

- Low‑Profile PCIe Form Factor:
Compliant with PCI Express Low Profile mechanical specification. Includes both low‑profile and standard brackets for flexible installation.

- Software‑Configurable I/O Direction:
Each 8‑bit port can be dynamically configured for input or output via software control words.

- Comprehensive Software Support:
Bundled with CONTEC’s API‑PAC(W32) driver library for Windows and API‑DIO(LNX) for Linux. Includes sample programs, diagnostics, and LabVIEW VI‑DAQ support.

- Full Interrupt and Filter Control via API:
Interrupt masks, edge selection, and filter parameters are programmable through the driver API.

- Compact and Lightweight:
Board dimensions 121.69 mm (L) × 67.90 mm (H); weight approximately 60 g.

- Compatible with Existing CONTEC Boards:
Functionally equivalent to PCI and CardBus models PIO‑48D(PCI), PIO‑48D(LPCI)H, and PIO‑48D(CB)H, ensuring easy migration to PCI Express systems.

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### 3. Technical Specifications

| Parameter | Specification |
|----------------|-------------------|
| Bus Interface | PCI Express Base Specification Rev. 1.0a × 1 |
| I/O Type | Non‑isolated LVTTL‑level (positive logic) |
| Number of Channels | 48 channels (bi‑directional, all interrupt‑capable) |
| Logic Levels | Input High ≥ 2.0 V, Low ≤ 0.8 V; Output High ≥ 2.4 V @ −3 mA, Low ≤ 0.4 V @ 12 mA |
| Input Resistance | 10 kΩ (pull‑down) |
| Output Drive Capability | Source −3 mA @ 2.4 V, Sink 12 mA @ 0.4 V |
| Response Time | ≤ 200 ns |
| Interrupts | 48 input signals combined into one interrupt request (INTA#) |
| Interrupt Edge | Rising or falling edge selectable per bit |
| Digital Filter Range | 0 (disabled) – 20 (131.072 ms max); formula = 2ⁿ / (8 × 10⁶) s |
| Signal Extension Distance | Approx. 1.5 m (max., dependent on wiring) |
| Power Consumption | 3.3 VDC 300 mA (max.) |
| Operating Temperature | 0 – 50 °C |
| Operating Humidity | 10 – 90 % RH (non‑condensing) |
| Dimensions (L × H) | 121.69 mm × 67.90 mm |
| Weight | Approx. 60 g |
| Connector Type | 68‑pin 0.8 mm pitch (HONDA HDRA‑E68LFDT+ or equivalent) |
| Mounting Brackets | Low‑Profile (default) and Standard bracket included |
| Maximum Boards per System | Up to 16 boards (Board ID 0 – Fh) |
| Compliance | PCI Express Base Spec 1.0a, RoHS compliant |

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### 4. Functionality

Operating Principle:
The DIO‑48D‑LPE interfaces directly with LVTTL‑level digital signals. Each of the 48 channels can be configured as input or output in 8‑bit groups (Ports A, B, C × 2 groups). The board’s internal logic emulates two i8255 PPI Mode 0 devices, providing familiar register structures for software developers.

Use Cases and Applications:
- Industrial automation and machine control
- Digital signal monitoring and pattern generation
- Production line testing and inspection systems
- Laboratory instrumentation and data acquisition
- Embedded control in PCs and industrial PCs
- Replacement for legacy PCI/ISA digital I/O boards

Compatibility:
Fully compatible with CONTEC’s PCI and CardBus digital I/O boards. Connector pin assignments match the PIO‑48D(PCI) series when used with the DIO‑68M/96F or PCA68PS‑ cables.

Software Control:
All configuration and I/O operations are performed via CONTEC’s API‑PAC(W32) or API‑DIO(LNX) libraries. Functions include port/bit read‑write, interrupt handling, digital filter configuration, and diagnostic utilities.

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### 5. Components & Accessories

Included Items:
- DIO‑48D‑LPE board (Low‑Profile bracket pre‑installed)
- Standard‑size PCI bracket (for full‑height slots)
- CD‑ROM containing API‑PAC(W32) driver library, manuals, and sample programs
- Quick Start Guide / User’s Guide (PDF)

Optional Cables:
- DIO‑68M/96F – 68‑pin to 96‑pin half‑pitch shielded cable (0.5 m)
- PCA68PS‑0.5P / PCA68PS‑1.5P – 68‑pin shielded cables (0.5 m / 1.5 m)

Optional Terminal Blocks:
- EPD‑96 – 96‑pin DIN‑rail mount terminal unit
- DTP‑64(PC) – 64‑channel screw‑terminal panel

Connectors:
- Board connector: HDRA‑E68LFDT+ (HONDA Tsushin Kogyo)
- Mating connector: HDRA‑E68MA1 or equivalent

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### 6. Installation & Setup

System Requirements:
- PC with available PCI Express ×1 slot (supports ×1/×4/×8/×16 slots)
- Windows XP/2000/Server 2003 or Linux kernel compatible distribution
- Administrator privileges for driver installation

Installation Steps:
1. Install Software First:
Run the installer from the API‑PAC(W32) CD‑ROM before inserting the board.
2. Set Board ID:
Use rotary switch SW1 (0–Fh) to assign unique ID if multiple boards are installed.
3. Mount Board:
Power off PC, insert board into PCIe slot, secure bracket.
4. Driver Installation:
Upon boot, Windows detects the board as “DIO‑48D‑LPE.” Specify INF path (\INF\Win2000\Dio\PCI).
5. Initialize Software:
Launch “API‑TOOL Configuration” to register the board and save settings to registry.
6. Diagnostics:
Use the included diagnostic utility to verify I/O operation and interrupt functionality.

Linux Setup:
Driver package `cdioXXX.tgz` is included on the CD. Compile and install using `make` and `make install`, then configure with `./config` and start the driver via `contec_dio_start.sh`.

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### 7. Performance & Capabilities

- I/O Throughput: Direct LVTTL interface enables sub‑microsecond signal response (≤ 200 ns).
- Interrupt Latency: Hardware interrupt aggregation minimizes CPU load for high‑frequency events.
- Digital Filtering: Programmable filter suppresses transients and contact bounce for reliable input capture.
- Electrical Characteristics:
- Input current ≈ 0.4 mA @ 5 V
- Output sink 12 mA @ 0.4 V, source −3 mA @ 2.4 V
- Signal Integrity: Short cable length (≤ 1.5 m) recommended for high‑speed applications.
- Limitations: Non‑isolated design requires common ground with external devices; not suitable for high‑voltage or noisy environments without proper shielding.

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### 8. Standards & Compliance

- Bus Standard: PCI Express Base Specification Rev. 1.0a
- Mechanical Form Factor: Low Profile PCI Express Card (121.69 × 67.90 mm)
- Electrical Safety: Designed for SELV (5 V/3.3 V logic levels)
- Environmental Compliance: RoHS Directive compliant
- Software Standards: Win32 API compatible DLL interface; Linux shared library module
- EMC/EMI: Designed for industrial PC environments with proper chassis grounding

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### 9. Additional Information

Warranty:
Three‑year limited warranty covering defects in materials and workmanship. Excludes damage from misuse, modification, or improper installation.

Support & Updates:
- Website: [https://www.contec.com](https://www.contec.com)
- Downloads: Latest drivers, sample code, and manuals available free of charge.
- Technical Support: Email and phone support through regional CONTEC offices.

Maintenance:
- Periodically inspect connectors for dust or corrosion.
- Clean edge contacts with industrial alcohol if handled.
- Store in anti‑static bag at room temperature when not in use.

Safety Precautions:
- Do not install or remove board with power on.
- Avoid exposure to flammable gases or corrosive environments.
- Ensure adequate PC power supply capacity for all installed boards.

Disposal:
Dispose of the product in accordance with local electronic waste regulations.

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### Summary

The CONTEC DIO‑48D‑LPE is a robust, high‑performance PCI Express Low Profile digital I/O board offering 48 bi‑directional LVTTL channels, interrupt support, and programmable digital filtering. Its i8255 Mode 0 compatibility, software‑configurable I/O, and comprehensive driver support make it ideal for industrial automation, test and measurement, and embedded control applications. Compact dimensions, dual‑bracket design, and cross‑platform software libraries ensure seamless integration into modern PC‑based control systems.