Comprehensive Product Summary – CONTEC PO‑32L(PCI)H Opto‑Isolated 32‑Channel Digital Output PCI Card
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### 1. Product Overview

Product Name: Opto‑Isolated 32‑Channel Digital Output PCI Card
Model: PO‑32L(PCI)H
Series: PCI Digital I/O Interface Boards
Article Number: PO‑32L(PCI)H
Manufacturer: CONTEC CO., LTD. (Osaka, Japan)

The CONTEC PO‑32L(PCI)H is a high‑performance, opto‑isolated digital output interface board designed for PCI bus systems. It provides 32 channels of open‑collector, current‑sink type digital outputs with opto‑coupler isolation, ensuring robust electrical separation between the PC and external devices. The board is engineered for industrial automation, control, and data acquisition applications requiring reliable digital output control under electrically noisy conditions.

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### 2. Key Features

- 32 Opto‑Isolated Digital Output Channels:
Provides 32 open‑collector (current sink type) outputs, divided into four groups of eight channels each. Each 16‑channel group shares a common terminal, allowing the use of separate external power supplies per group.

- Opto‑Coupler Bus Isolation:
Complete isolation between the PC bus and I/O circuitry via opto‑couplers enhances noise immunity and protects the host system from voltage transients.

- High‑Speed Response:
Typical response time of 200 µs per channel, suitable for real‑time control and high‑frequency switching applications.

- Wide Output Voltage Range:
Supports external driver voltages from 12 VDC to 24 VDC (±10%), with a maximum output voltage rating of 35 VDC.

- Output Protection Circuits:
Each output group includes surge suppression using Zener diodes (RD47FM or equivalent) and overcurrent protection circuits for enhanced durability.

- Software Support:
Bundled with CONTEC’s API‑PAC(W32) driver library, providing Windows and Linux compatibility. Includes diagnostic utilities and sample programs for Visual Basic, Visual C++, and gcc.

- LabVIEW Integration:
Fully supported through downloadable libraries (DAQfast for LabVIEW and VI‑DAQ) for seamless integration with National Instruments LabVIEW environments.

- Compact PCI Form Factor:
Standard PCI board dimensions (121.69 mm × 105.68 mm) with universal keying for both 3.3 V and 5 V PCI slots.

- Industrial‑Grade Compliance:
Certified to VCCI Class A, CE (EMC Directive Class A), and RoHS Directive, ensuring compliance with international electromagnetic and environmental standards.

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### 3. Technical Specifications

| Parameter | Specification |
|----------------|------------------|
| Output Format | Opto‑coupler isolated open‑collector output (current sink type, negative logic) |
| Number of Channels | 32 channels (16 channels per common power group) |
| Output Voltage (Max.) | 35 VDC |
| Output Current (Max.) | 100 mA per channel |
| Residual Voltage (ON) | ≤ 0.5 V (≤ 50 mA), ≤ 1.0 V (≤ 100 mA) |
| Response Time | ≤ 200 µs |
| Surge Protection | Zener diode RD47FM (NEC) or equivalent |
| Overcurrent Protection | Provided per 8‑channel unit |
| External Power Supply | 12 – 24 VDC (±10%) |
| Dielectric Strength | 1000 Vrms between bus and I/O |
| Power Consumption | 5 VDC @ 200 mA (from PCI bus) |
| Operating Temperature | 0 – 50 °C |
| Operating Humidity | 10 – 90 % RH (non‑condensing) |
| Allowable Signal Cable Length | Approx. 50 m (depending on wiring environment) |
| PCI Bus Specification | 33‑bit, 33 MHz, universal keying (supports 3.3 V and 5 V slots) |
| Dimensions (L × H) | 121.69 mm × 105.68 mm |
| Weight | Approx. 130 g |
| Standards Compliance | VCCI Class A, CE Marking (EMC Class A), RoHS Directive |

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### 4. Functionality

The PO‑32L(PCI)H functions as a digital output interface board for PCs equipped with PCI expansion slots. Each output channel operates as an opto‑isolated open‑collector transistor output capable of sinking current from external loads such as relays, LEDs, or TTL‑level inputs.

Operating Principle:
- The board’s opto‑couplers isolate the PC’s internal circuitry from external devices.
- When a digital “1” is written to a channel, the corresponding transistor turns ON, allowing current to flow through the external load.
- When a digital “0” is written, the transistor turns OFF, interrupting current flow.
- All outputs default to OFF when the PC is powered on or reset.

Typical Applications:
- Industrial automation and process control
- PLC or relay control systems
- Signal switching and device actuation
- LED or indicator control
- TTL‑level signal driving
- Laboratory instrumentation and data acquisition

Compatibility:
- Compatible with Windows (API‑DIO(WDM), API‑DIO(98/PC)) and Linux (API‑DIO(LNX)) environments.
- Supports integration with LabVIEW via DAQfast and VI‑DAQ libraries.
- Can coexist with up to 15 additional CONTEC PCI boards (maximum 16 boards per system).

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### 5. Components & Accessories

Included Items (Standard Package):
1. PO‑32L(PCI)H board (1 pc)
2. First Step Guide (1 copy)
3. Driver Software Disk [API‑PAC(W32)] (1 pc) – includes drivers, user’s guide, and sample programs
4. Warranty Certificate (1 copy)
5. Serial Number Label (1 pc)

Optional Cables:
- Flat Cables (37‑pin D‑type connectors on both ends):
- PCB37P‑1.5 (1.5 m), PCB37P‑3 (3 m), PCB37P‑5 (5 m)
- Shielded Cables (37‑pin D‑type connectors):
- PCB37PS‑0.5P (0.5 m), PCB37PS‑1.5P (1.5 m), PCB37PS‑3P (3 m), PCB37PS‑5P (5 m)
- Flat Cable (single 37‑pin connector):
- PCA37P‑1.5 (1.5 m), PCA37P‑3 (3 m), PCA37P‑5 (5 m)
- Shielded Cable (two 37‑pin connectors):
- PCA37PS‑0.5P (0.5 m), PCA37PS‑1.5P (1.5 m), PCA37PS‑3P (3 m), PCA37PS‑5P (5 m)

Optional Accessories:
- Screw Terminal (M3 × 37P): EPD‑37A (*spring‑up type*)
- Screw Terminal (M3.5 × 37P): EPD‑37
- General Purpose Terminal (M3 × 37P): DTP‑3A
- Screw Terminal (M2.5 × 37P): DTP‑4C
- Signal Monitor for Digital I/O (32 bits): CM‑32L

(*Note: Optional cables PCB37P or PCB37PS are required for terminal accessories.*)

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### 6. Installation & Setup

System Requirements:
- PCI slot supporting 5 V or 3.3 V signaling (universal keying)
- +5 V power supply from PCI bus (board does not operate on +3.3 V‑only systems)
- Compatible operating system: Windows 7/8/10/11 or Linux kernel with API‑DIO(LNX) support

Installation Steps:
1. Software Installation:
Install the API‑PAC(W32) driver library before inserting the board. The installer provides both development and runtime environments.
2. Hardware Configuration:
- Set the Board ID (rotary switch SW1) if multiple boards are installed (range 0–Fh).
- Default ID = 0.
3. Board Installation:
- Power off the PC and insert the board into an available PCI slot.
- Secure the bracket with a screw.
4. Driver Initialization:
- Upon reboot, Windows automatically detects the board.
- Use Device Manager to confirm installation under “CONTEC Devices.”
5. Verification:
- Run the included Diagnosis Program to test I/O functionality.
- Verify output switching and response times.

Mounting & Handling Precautions:
- Do not insert or remove the board while the PC is powered.
- Avoid touching the gold‑plated edge connector.
- Ensure adequate power supply capacity for all installed boards.
- Use ferrite cores on I/O cables in noisy environments.

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### 7. Performance & Capabilities

- Output Drive Capability:
Each channel can sink up to 100 mA at voltages up to 35 VDC, suitable for driving relays, solenoids, or indicator lamps.

- Response Time:
200 µs maximum ensures fast switching suitable for automation control loops.

- Isolation & Noise Immunity:
1000 Vrms dielectric strength between bus and I/O circuits provides robust protection against ground potential differences and transient surges.

- Power Efficiency:
Low power draw (200 mA @ 5 VDC) minimizes system load.

- Scalability:
Up to 16 boards can be installed in a single system, providing up to 512 digital output channels.

- Limitations:
- Outputs are current‑sink type only (cannot source current).
- Requires external power supply for load circuits.
- No interrupt functionality (output‑only board).

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### 8. Standards & Compliance

- Electrical Safety & EMC:
- VCCI Class A (Japan)
- CE Marking (EMC Directive Class A)
- RoHS Directive (Restriction of Hazardous Substances)

- PCI Bus Compliance:
- PCI Local Bus Specification Rev. 2.2
- 33‑bit, 33 MHz operation
- Universal keying supports both 3.3 V and 5 V signaling environments

- Dielectric Strength:
1000 Vrms isolation between PC bus and external I/O circuits

- Environmental Conditions:
- Operating: 0 – 50 °C, 10 – 90 % RH (non‑condensing)
- Storage: Room temperature, dry, dust‑free environment

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### 9. Additional Information

Warranty:
CONTEC provides a limited three‑year warranty covering defects in materials and workmanship. The warranty excludes damage due to misuse, modification, or improper installation.

Technical Support:
- Website: [https://www.contec.com/](https://www.contec.com/)
- Latest drivers, manuals, and sample code available for download.
- Free updates for API‑PAC(W32) and LabVIEW libraries.
- Customer Service:
- RMA (Return Merchandise Authorization) required for repairs.
- Repairs are free within warranty period (freight prepaid).

Maintenance:
- Periodically inspect connectors and cables for dust or corrosion.
- Store in anti‑static packaging when not in use.
- Dispose of the product according to local electronic waste regulations.

Software Updates:
- API‑PAC(W32) regularly updated for new OS compatibility.
- API‑DIO(WDM) (Windows) and API‑DIO(LNX) (Linux) provide unified function calls for digital I/O operations.
- LabVIEW Libraries: DAQfast and VI‑DAQ available free of charge for seamless integration.

Differences from Previous Model (PO‑32L(PCI)):
- Added surge protection (Zener diodes) and overcurrent protection.
- Reduced board size from 176.41 × 106.68 mm to 121.69 × 105.68 mm.
- Maintains connector pin compatibility with legacy PO‑32L(PCI).

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### Summary

The CONTEC PO‑32L(PCI)H is a robust, opto‑isolated 32‑channel digital output PCI board engineered for industrial and laboratory automation systems. It combines high‑speed switching, electrical isolation, and comprehensive software support in a compact PCI form factor. With its 35 V/100 mA per‑channel capability, surge and overcurrent protection, and compatibility with Windows, Linux, and LabVIEW environments, the PO‑32L(PCI)H delivers reliable digital control for demanding applications.

Its compliance with international EMC and RoHS standards, three‑year warranty, and extensive accessory ecosystem make it a dependable choice for system integrators and engineers seeking a durable, high‑performance digital output interface for PCI‑based control systems.