Comprehensive Product Summary – ADLINK ACL‑8112PG Multi‑Function Data Acquisition Card

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### 1. Product Overview

Product Name: ACL‑8112PG
Model: ACL‑8112PG
Series: ACL‑8112 Series (Enhanced Multi‑Function Data Acquisition Cards)
Article Number: ACL‑8112PG
Manufacturer: ADLINK Technology Inc.
Trademark: NuDAQ®

Product Description:
The ADLINK ACL‑8112PG is a high‑performance, high‑speed, multi‑function data acquisition (DAQ) card designed for IBM PC/AT and compatible systems. It integrates analog‑to‑digital (A/D) conversion, digital‑to‑analog (D/A) conversion, digital input/output (DIO), and timer/counter functions on a single half‑size ISA card. The ACL‑8112PG variant provides 16 single‑ended analog input channels with programmable gain, two 12‑bit analog output channels, 16 digital inputs, 16 digital outputs, and a 16‑bit counter/timer subsystem. It is optimized for applications requiring up to 100 kS/s sampling rate and 12‑bit resolution.

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### 2. Key Features

- Bus Interface: AT‑Bus (ISA) compatible.
- Analog Inputs: 16 single‑ended channels (ACL‑8112PG model).
- Analog Outputs: Two 12‑bit monolithic multiplying D/A channels with double buffering.
- Digital I/O: 16 TTL‑compatible digital inputs and 16 TTL‑compatible digital outputs.
- Timer/Counter: Three programmable 16‑bit down counters (Intel 8254 compatible).
- Sampling Rate: Programmable up to 100 kHz.
- Resolution: 12‑bit A/D and 12‑bit D/A conversion.
- Programmable Gain: Five levels (×1, ×2, ×4, ×8, ×16); ×0.5 selectable via jumper.
- Trigger Modes: Software, internal pacer (timer‑based), or external pulse trigger.
- Data Transfer Modes: Polling, DMA, or interrupt‑driven.
- Interrupt Levels: Selectable from IRQ3, 5–7, 9–12, or 15.
- DMA Channels: Selectable between Channel 1 or Channel 3.
- Power Supply: On‑board DC/DC converter for stable analog power.
- Connectors: One 37‑pin D‑type female connector and two 20‑pin IDC headers.
- Form Factor: Half‑size ISA card (163 mm × 123 mm).
- Software Support: C‑language library, DOS utilities, and optional Windows SDK (ACLS‑DLL2) and LabVIEW driver (ACLS‑LVIEW).

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### 3. Technical Specifications

Analog Input (A/D):
- Converter Type: ADS774 or equivalent, successive‑approximation.
- Resolution: 12 bits.
- Channels: 16 single‑ended (ACL‑8112PG).
- Input Range (Programmable):
- ±10 V, ±5 V, ±2.5 V, ±1.25 V, ±0.625 V
- or ±5 V, ±2.5 V, ±1.25 V, ±0.625 V, ±0.3125 V (jumper selectable).
- Conversion Time: 8 µs.
- Input Impedance: 10 MΩ.
- Overvoltage Protection: ±35 V continuous.
- Accuracy:
- Gains ×0.5–×4: ±0.015 % FSR ± 1 LSB
- Gains ×8–×16: ±0.02 % FSR ± 1 LSB
- Sampling Rate: Up to 100 kS/s (single or multiplexed).
- Trigger Modes: Software, internal pacer, or external trigger.
- Data Transfer: Polling, DMA, or interrupt.

Analog Output (D/A):
- Converter: DAC7541 or equivalent.
- Channels: 2 double‑buffered outputs.
- Resolution: 12 bits.
- Output Range:
- Internal reference: 0–5 V or 0–10 V (unipolar).
- External reference: up to ±10 V.
- Settling Time: 30 µs.
- Linearity: ±½ LSB.
- Output Drive: ±5 mA maximum.

Digital I/O:
- Channels: 16 inputs + 16 outputs (TTL/DTL compatible).
- Input Voltage Levels:
- Logic 0: 0–0.8 V
- Logic 1: ≥ 2.0 V
- Output Voltage Levels:
- Logic 0: ≤ 0.4 V @ 8 mA sink
- Logic 1: ≥ 2.4 V @ 0.4 mA source
- Input Load:
- Low: +0.5 V @ –0.2 mA
- High: +2.7 V @ +20 mA

Timer/Counter:
- Device: Intel 8254 compatible.
- Configuration: Three × 16‑bit down counters.
- A/D Pacer: Two cascaded 16‑bit counters (32‑bit total) with 2 MHz base clock.
- Pacer Output Frequency: 0.00046 Hz – 100 kHz.
- User Counter: One × 16‑bit counter with internal 2 MHz or external clock.

General:
- I/O Base Address: 16 consecutive I/O addresses (default = 0x220).
- Interrupts: IRQ3, 5, 6, 7, 9, 10, 11, 12, 15.
- DMA Channels: CH1 or CH3 (jumper selectable).
- Operating Temperature: 0 °C – 55 °C.
- Storage Temperature: –20 °C – 80 °C.
- Humidity: 5 – 95 % RH, non‑condensing.
- Power Consumption: +5 V @ 450 mA typ., +12 V @ 150 mA typ.
- Dimensions: 163 mm (L) × 123 mm (W).

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### 4. Functionality

Operating Principle:
The ACL‑8112PG performs high‑speed data acquisition by converting analog signals into 12‑bit digital values using a successive‑approximation ADC. The onboard programmable gain amplifier allows scaling of input ranges for optimal resolution. The card supports software, timer‑based, or external triggering for flexible sampling control. Data can be transferred to system memory via polling, interrupt, or DMA for efficient throughput.

Use Cases and Applications:
- Industrial process monitoring and control.
- Laboratory instrumentation and test automation.
- Energy management and environmental monitoring.
- Product testing and quality assurance.
- Event counting, frequency measurement, and waveform generation.
- Security and annunciation systems.

Compatibility:
- IBM PC/AT and compatible ISA‑bus systems.
- Supported operating environments: DOS (native), Windows 3.1/95/98/NT via optional SDK.
- Software integration with C/C++, Visual C++, Visual Basic, Delphi, and LabVIEW.

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### 5. Components & Accessories

Included Items:
- ACL‑8112PG DAQ card.
- ADLINK CD containing DOS utilities, C‑language library, and documentation.
- User’s Guide (Manual Rev. 3.51).

Optional Accessories / Daughter Boards:
- ACLD‑8125: 37‑pin thermocouple input board with cold‑junction compensation.
- ACLD‑9137: Direct 37‑pin connector board for simple wiring.
- ACLD‑9182: 16‑channel isolated digital input board (500 V DC isolation).
- ACLD‑9185: 16‑channel SPDT relay output board.
- ACLD‑9188: General‑purpose terminal board for 37‑pin D‑sub interface.

Connectors:
- CN1: 20‑pin IDC header for digital outputs (DO 0–15).
- CN2: 20‑pin IDC header for digital inputs (DI 0–15).
- CN3: 37‑pin D‑type female connector for analog I/O and timer/counter signals.

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### 6. Installation & Setup

System Requirements:
- IBM PC/AT or compatible with available ISA slot.
- DOS or Windows 3.x/9x/NT (for SDK).
- Free I/O address range (default 0x220–0x22F).
- Available IRQ and DMA channel (non‑conflicting).

Installation Steps:
1. Unpack the card using anti‑static precautions.
2. Verify jumper and DIP switch settings for base address, DMA, IRQ, and gain.
3. Insert the card into an ISA slot and secure it.
4. Connect external signals via CN1, CN2, and CN3.
5. Install software drivers and libraries from the ADLINK CD.

Configurable Settings:
- Base Address: DIP SW1 (default 0x220).
- DMA Channel: JP1/JP2 (CH1 or CH3).
- IRQ Level: JP3 (selectable IRQ3–15, default IRQ5).
- Trigger Source: JP5 (internal/external).
- Clock Source: JP4 (internal 2 MHz or external).
- D/A Reference: JP6/JP7 (internal/external reference).
- A/D Input Range: JP9 (±5 V or ±10 V).

Mounting:
Half‑size ISA card; fits standard PC chassis.

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### 7. Performance & Capabilities

Analog Input Performance:
- 12‑bit resolution with 8 µs conversion time.
- Programmable gain up to ×16 for fine signal scaling.
- 100 kS/s maximum sampling rate (single or multiplexed).
- ±35 V overvoltage protection ensures robust operation.

Analog Output Performance:
- 12‑bit resolution, 30 µs settling time.
- 0–5 V or 0–10 V unipolar output range.
- ±5 mA drive capability for external loads.

Digital I/O Performance:
- 16 inputs and 16 outputs, TTL compatible.
- Fast response suitable for control and monitoring.

Timer/Counter Capabilities:
- 32‑bit cascaded pacer timer for precise sampling control.
- User‑programmable 16‑bit counter for event counting or frequency generation.
- Pacer frequency range: 0.00046 Hz – 100 kHz.

Limitations:
- ISA‑bus interface limits throughput compared to modern PCI/PCIe cards.
- DOS‑based utilities; Windows support requires optional SDK.
- Single‑ended analog inputs only (no differential mode on PG model).

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### 8. Standards & Compliance

- Bus Standard: ISA (AT‑Bus).
- Electrical Compliance: TTL/DTL logic levels for digital I/O.
- Environmental: Operating 0–55 °C; Storage –20–80 °C; 5–95 % RH non‑condensing.
- Safety: On‑board DC/DC converter isolates analog and digital domains.
- Quality Assurance: Manufactured under ADLINK’s ISO‑certified processes.
- Software Standards: Compatible with Borland C/C++, Microsoft Visual C++, and National Instruments LabVIEW.

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### 9. Additional Information

Calibration:
The ACL‑8112PG includes five variable resistors (VRs) for fine calibration:
- VR1 – D/A CH1 full‑scale adjustment.
- VR2 – D/A CH2 full‑scale adjustment.
- VR3 – A/D full‑scale adjustment.
- VR4 – A/D amplifier offset adjustment.
- VR5 – A/D offset adjustment.
Calibration utilities and procedures are provided in the software package.

Software Support:
- C‑Language Library: 23 API functions for A/D, D/A, DIO, and timer operations.
- Development Kit (ACLS‑DLL2): Windows 3.1/95/98/NT support for VC++, VB, Delphi.
- LabVIEW Driver (ACLS‑LVIEW): VI library for integration with NI LabVIEW.
- Demo Programs: AD_DEMO1–4, DA_DEMO, DI_DEMO, DO_DEMO, TMR_DEMO.

Maintenance:
- Periodic calibration recommended for optimal accuracy.
- Keep card free from dust and static discharge.
- Verify jumper settings after relocation or service.

Warranty:
- One‑year limited warranty from date of shipment.
- Covers defects in materials and workmanship under normal use.
- Excludes damage from misuse, modification, or unauthorized repair.
- Return shipping prepaid; repair or replacement at ADLINK’s discretion.

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

Documentation:
- User’s Guide Rev. 3.51 (June 7, 2000).
- Proprietary information © 1996–2000 ADLINK Technology Inc.

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### Summary

The ADLINK ACL‑8112PG is a robust, cost‑effective, and versatile ISA‑bus data acquisition card integrating multiple analog and digital I/O functions. With 12‑bit resolution, 100 kS/s sampling rate, programmable gain, and flexible triggering and transfer modes, it serves as a comprehensive solution for industrial automation, laboratory measurement, and embedded control systems. Its combination of analog precision, digital control, and timing flexibility makes it suitable for a wide range of data acquisition and signal generation tasks. The card’s modular design, software libraries, and optional daughter boards provide scalability and ease of integration into both legacy and custom PC‑based measurement systems.