1. Product Overview

Product Name: ACLD-9188
Model: ACLD-9188
Series: NuDAQ® ACLD Series Termination Boards
Article Number: ACLD-9188
Manufacturer: ADLINK Technology Inc., Taipei, Taiwan

The ADLINK ACLD-9188 is a universal industrial screw terminal and signal conditioning panel designed for use with ADLINK’s NuDAQ and ACL/PCI series data acquisition and control cards. It serves as a versatile termination and interface board for field signal wiring, providing convenient connectivity between external sensors, actuators, and DAQ modules. The ACLD-9188 supports both 37-pin D-sub and dual 20-pin flat cable connections, enabling flexible integration in laboratory, industrial, and embedded automation environments.

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2. Key Features

- Universal Screw Terminal Interface:
Provides 40 screw terminal points for secure, heavy-duty signal wiring. Each terminal corresponds to a channel on the connected DAQ card, simplifying field wiring and maintenance.

- Dual Connector Support:
Equipped with both a 37-pin D-type connector and two 20-pin flat cable connectors, allowing flexible connection options for shielded or ribbon cables.

- Signal Conditioning Capability:
Includes reserved circuit pads for implementing passive signal conditioning such as low-pass filters, voltage attenuators, current-to-voltage converters, or break detection circuits.

- Industrial-Grade Construction:
Features robust terminal blocks suitable for industrial environments, ensuring reliable electrical contact and mechanical stability.

- Compatibility with Multiple ADLINK DAQ Cards:
Designed for use with a wide range of ADLINK PCI and ACL series cards, including analog and digital I/O modules such as PCI-9114, PCI-9111, PCI-6208, PCI-7200, PCI-7230, PCI-7250/7251, ACL-8312/8316, ACL-8112, ACL-8216, ACL-8111, ACL-6126, ACL-7130, and ACL-7225.

- Flexible Mounting Options:
Supplied with nylon standoffs for table-top or panel mounting, supporting both benchtop testing and permanent installation.

- Low-Cost, High-Reliability Design:
Offers a cost-effective solution for signal termination and conditioning in industrial automation and data acquisition systems.

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3. Technical Specifications

- Physical Dimensions: 222 mm (W) × 114 mm (D)
- Weight: Approximately 0.5 kg (typical, including connectors and standoffs)
- Connectors:
- CN1, CN2: Two 20-pin flat cable connectors
- CN3: 37-pin D-sub connector (female)
- CN5: Internal interconnection bus linking CN1/CN2 to CN3
- Terminal Points: 40 screw terminals (A1–A20, B1–B20)
- Material: FR-4 PCB substrate with industrial-grade terminal blocks and nickel-plated D-sub connector
- Operating Voltage Range: Supports signal levels compatible with connected DAQ cards (typically ±10 V analog or TTL digital)
- Insulation Resistance: ≥100 MΩ between channels and ground (typical)
- Operating Temperature: 0°C to +50°C
- Storage Temperature: -20°C to +70°C
- Humidity: 10%–90% RH, non-condensing

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4. Functionality

The ACLD-9188 functions as a termination and signal conditioning interface between field devices and ADLINK data acquisition cards. It provides screw terminals for direct wiring of analog or digital signals, which are internally routed to the corresponding pins on the 37-pin or 20-pin connectors.

Typical Use Cases:
- Analog Signal Conditioning:
Users can implement passive RC networks on the reserved circuit pads to create low-pass filters or voltage dividers for analog input channels.
- Digital I/O Termination:
Provides a convenient interface for connecting switches, sensors, or actuators to digital input/output channels.
- Current Loop Conversion:
By adding precision resistors (e.g., 250 Ω), the board can convert 0–20 mA current loop signals into 0–5 V voltage signals.
- Break Detection and Attenuation:
The board’s layout supports custom resistor and capacitor configurations for break detection or signal attenuation.

Compatibility:
The ACLD-9188 is compatible with both PCI and ACL series DAQ cards from ADLINK, including analog input/output and digital I/O modules. It supports direct connection via 20-pin flat ribbon cables (ACL-10120-1) or shielded 37-pin cables for noise-sensitive applications.

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5. Components & Accessories

Included Items:
- ACLD-9188 Industrial Terminal Board
- Two 20-pin flat cables (model ACL-10120-1)
- Nylon standoffs for table-top or panel mounting
- User’s manual and documentation

Optional Accessories:
- Shielded 37-pin D-sub cable for noise-sensitive analog signals
- Additional flat ribbon cables for multi-board configurations
- External enclosures or DIN-rail mounting kits (optional, depending on installation environment)

Connectors and Terminals:
- CN1/CN2: 20-pin flat cable connectors for direct connection to DAQ cards
- CN3: 37-pin D-sub connector for shielded cable connection
- CN5: Internal bus linking CN1/CN2 to CN3
- Screw Terminals: 40 points labeled A1–A20 and B1–B20 for field wiring

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6. Installation & Setup

Requirements:
- Compatible ADLINK DAQ card with 20-pin or 37-pin interface
- Appropriate flat or shielded cable
- Power supply provided by the DAQ card (no external power required for passive operation)

Installation Steps:
1. Unpack and Inspect:
Verify that the ACLD-9188 board, cables, and accessories are undamaged.
2. Mounting:
Use the provided nylon standoffs to mount the board on a panel or tabletop.
3. Connection to DAQ Card:
- For 20-pin interface cards, connect the flat ribbon cables from CN1 and CN2 to the DAQ card’s digital or analog I/O ports.
- For 37-pin interface cards, use a shielded DB-37 cable between the DAQ card and CN3.
4. Signal Wiring:
Connect field signals to the screw terminals (A1–A20, B1–B20) according to the pin assignment table.
5. Configuration:
If signal conditioning is required, install resistors or capacitors on the designated circuit pads to form filters or attenuators.
6. Verification:
Check continuity and signal integrity before powering the system.

Mounting Options:
- Table-top configuration for laboratory testing
- Panel mounting for industrial enclosures

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7. Performance & Capabilities

- Signal Throughput:
Supports full analog bandwidth of connected DAQ cards (up to several hundred kHz, depending on card specifications).
- Electrical Performance:
- Minimal signal loss due to short trace lengths and low-resistance terminals
- Suitable for both single-ended and differential signal configurations (depending on DAQ card)
- Noise Immunity:
When used with shielded 37-pin cables, the ACLD-9188 provides improved noise rejection for analog signals.
- Load Capacity:
Terminal blocks support wire gauges from 18 to 22 AWG, accommodating typical industrial wiring.
- Limitations:
The ACLD-9188 is a passive board; it does not provide active amplification, isolation, or buffering. For high-speed or high-voltage isolation, external conditioning modules are recommended.

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8. Standards & Compliance

- Design Standards:
Complies with ADLINK’s internal quality and reliability standards for industrial I/O accessories.
- Electrical Safety:
Designed for low-voltage signal applications within the limits of the connected DAQ card.
- RoHS Compliance:
Manufactured using lead-free processes and RoHS-compliant materials.
- EMC Considerations:
When used with shielded cables and proper grounding, the ACLD-9188 supports EMC-compliant installations in industrial environments.
- Trademark:
NuDAQ® is a registered trademark of ADLINK Technology Inc.

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9. Additional Information

Warranty:
ADLINK provides a limited two-year warranty (one year in China) covering defects in materials and workmanship from the date of shipment. The warranty excludes damage caused by misuse, unauthorized repair, or operation beyond specified limits.

Support & Service:
- Technical Support: nudaq@adlink.com.tw
- Sales & Service: service@adlink.com.tw
- Website: [www.adlinktech.com](http://www.adlinktech.com)
- Telephone: +886-2-82265877
- Fax: +886-2-82265717
- Address: 9F, No. 166, Jian Yi Road, Chungho City, Taipei 235, Taiwan, R.O.C.

Maintenance:
The ACLD-9188 requires minimal maintenance. Periodically check terminal screws for tightness and inspect for dust or corrosion. Avoid exposure to excessive humidity or vibration.

Firmware/Software Updates:
As a passive termination board, the ACLD-9188 does not require firmware or software updates. However, users should ensure that the connected DAQ card drivers and software are up to date for optimal performance.

Service Procedure:
In case of malfunction, contact ADLINK technical support for an RMA (Return Material Authorization). Products must be securely packaged and shipped prepaid.

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Summary

The ADLINK ACLD-9188 is a robust, versatile, and cost-effective termination and signal conditioning board designed for industrial and laboratory data acquisition systems. Its combination of universal screw terminals, dual connector interfaces, and customizable signal conditioning capability makes it an ideal choice for engineers integrating analog and digital I/O in complex automation environments. With broad compatibility across ADLINK’s PCI and ACL series DAQ cards, the ACLD-9188 simplifies wiring, enhances reliability, and provides a flexible platform for custom signal interfacing and conditioning.