Comprehensive Product Summary – AI‑1664LA‑LPE

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### 1. Product Overview

Product Name: AI‑1664LA‑LPE
Article Number: AI‑1664LA‑LPE
Series: PCI Express Low Profile Analog Input Boards
Model Description: Low‑Profile PCI Express A/D Conversion Board, 100 kS/s, 16‑bit, 64 Channels + 4 DI + 4 DO
Manufacturer: CONTEC CO., LTD. (Osaka, Japan)
Product Type: Multifunction analog input interface board for PCI Express x1 bus systems
Version: Ver. 1.02 (backward‑compatible with Ver. 1.01)

The AI‑1664LA‑LPE is a low‑profile, PCI Express‑compliant analog input board designed for high‑precision data acquisition in PC‑based measurement and control systems. It provides up to 64 single‑ended or 32 differential analog input channels with 16‑bit resolution, integrated digital I/O, and a 32‑bit counter. The board supports both low‑profile and standard PCI brackets and includes Windows®/Linux® drivers, data‑logging software, and libraries for MATLAB® and LabVIEW®.

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### 2. Key Features

- High‑Precision Analog Input:
64 single‑ended or 32 differential channels, 16‑bit resolution, ±10 V bipolar input range, 10 µs conversion per channel (100 kS/s aggregate rate).

- Flexible Sampling Control:
Sampling start/stop can be triggered by software, external triggers, or comparison of conversion data. Supports internal or external sampling clocks.

- Buffered Data Acquisition:
On‑board 1 k‑word buffer memory configurable as FIFO or ring buffer for continuous background sampling independent of host CPU load.

- Digital I/O and Counter:
4 LVTTL‑level digital inputs and 4 LVTTL‑level digital outputs (positive logic), plus one 32‑bit up‑counter channel (10 MHz max).

- Digital Filtering:
Built‑in digital filter (1 µs selectable) suppresses chattering and noise on external trigger, sampling clock, digital input, and counter signals.

- Software‑Based Calibration:
Full analog input calibration via software; user can store additional calibration data for environmental adjustments.

- Driver and Software Support:
Includes CONTEC API‑PAC(W32) driver libraries for Windows and Linux, C‑LOGGER data‑logger software, and optional MATLAB ML‑DAQ and LabVIEW VI‑DAQ libraries.

- Compatibility:
Functionally and connector‑pin compatible with legacy PCI board AD16‑64(LPCI)LA, simplifying system migration.

- Dual Bracket Support:
Supplied with both low‑profile and standard PCI brackets for flexible installation.

- Regulatory Compliance:
RoHS and VCCI certified.

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### 3. Technical Specifications

Analog Input
- Isolation: Non‑isolated
- Input Type: Single‑ended (64 ch) / Differential (32 ch) (selectable by software)
- Input Range: Bipolar ±10 V
- Absolute Maximum Input Voltage: ±20 V
- Input Impedance: ≥ 1 MΩ
- Resolution: 16 bits
- Non‑linearity Error: ±5 LSB (≈ 0.1 % of FS at 0–50 °C)
- Conversion Speed: 10 µs per channel
- Sampling Rate: 100 kS/s max
- Buffer Memory: 1 k word (FIFO / Ring selectable)
- Start Trigger: Software / External (LVTTL, edge‑selectable)
- Stop Trigger: Sampling count / External / Software
- External Clock: LVTTL level, edge‑selectable
- Digital Filter: Selectable 1 µs filter for trigger and I/O signals

Digital I/O
- Input Channels: 4 (LVTTL positive logic, un‑isolated)
- Output Channels: 4 (LVTTL positive logic, un‑isolated)
- Output Drive: I_OL = 8 mA typical

Counter
- Channels: 1 (up‑count)
- Resolution: 32 bit (0 to FFFFFFFFh)
- External Inputs: 2 (LVTTL Gate / Up)
- Gate: High = Enable
- Up: Rising edge count
- External Output: LVTTL pulse output on count match
- Max Input Frequency: 10 MHz

Common / Electrical
- Bus Interface: PCI Express Base Specification Rev. 1.0a (x1 lane)
- I/O Address Space: 64 ports boundary
- Interrupt: INTA (single interrupt request line)
- Power Consumption: 3.3 V DC @ 620 mA max
- Operating Temperature: 0 – 50 °C
- Operating Humidity: 10 – 90 % RH (non‑condensing)
- Dimensions: 121.69 (L) × 67.90 (H) mm
- Weight: Approx. 90 g
- Connector Type: 2 × 68‑pin 0.8 mm pitch (HONDA HDRA‑E68W1LFDT‑SL or equivalent)
- Certifications: RoHS, VCCI

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### 4. Functionality

Operating Principle
The AI‑1664LA‑LPE converts analog voltage signals into 16‑bit digital data using an internal A/D converter. The multiplexer sequentially selects input channels, and conversion results are stored in the on‑board buffer. Sampling can be synchronized to internal or external clocks, and start/stop conditions are programmable.

Use Cases & Applications
- Multi‑channel data acquisition and logging
- Laboratory instrumentation and test automation
- Industrial process monitoring and control
- Sensor signal digitization (voltage ±10 V)
- Integration with MATLAB or LabVIEW for custom analysis

Compatibility
- Hardware: PCI Express x1 slot (low‑profile or standard)
- Software: Windows (32/64‑bit) and Linux distributions
- APIs: C/C++ (VB, Visual C++), MATLAB ML‑DAQ, LabVIEW VI‑DAQ

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### 5. Components & Accessories

Included Items
- AI‑1664LA‑LPE board × 1
- Low‑profile bracket (pre‑installed)
- Standard‑size bracket × 1
- API‑PAC(W32) installation disk (driver & manual)
- First Step Guide × 1
- Serial number label × 1
- Product registration card & warranty certificate × 1

Optional Cables
- PCB68PS‑0.5P (0.5 m) – Shielded 68‑pin half‑pitch cable (both ends)
- PCB68PS‑1.5P (1.5 m) – Shielded 68‑pin half‑pitch cable (both ends)
- PCA68PS‑0.5P / 1.5P – Shielded single‑ended 68‑pin cables
- ADC‑68M/96F (0.5 m) – 68‑to‑96 pin conversion shielded cable
*(Two cables required for CNA and CNB connectors.)*

Optional Terminal Blocks / Panels
- DTP‑64(PC): Screw terminal M2.5 × 96 P
- EPD‑68A: Screw terminal M3 × 68 P
- EPD‑96A / EPD‑96: Screw terminal M3 / M3.5 × 96 P
- ATP‑32F: BNC terminal unit (32 analog inputs)
- ATP‑8: BNC terminal unit (8 analog inputs)

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### 6. Installation & Setup

Requirements
- PC with available PCI Express x1 slot
- 3.3 V power supply capable of ≥ 620 mA
- Supported OS: Windows XP / Vista / 7 / 8 / 10 / 11 or Linux kernel with API‑AIO(LNX)

Installation Procedure
1. Software Installation: Install API‑PAC(W32) drivers before hardware insertion.
2. Bracket Selection: Replace low‑profile bracket with standard one if required.
3. Board ID Setting: Set rotary switch SW1 (0–Fh) for multi‑board systems.
4. Hardware Mounting: Insert board into PCIe slot with power off; secure with screw.
5. Driver Detection: Upon boot, Windows detects the device and installs the driver.
6. Device Initialization: Assign device name via Device Manager for API access.
7. Verification: Run diagnostic utility to confirm analog input, digital I/O, and counter operation.

Connection Guidelines
- Use shielded cables for long runs or noisy environments.
- Keep analog and digital grounds isolated to minimize noise.
- Connect unused analog inputs to analog ground.
- Do not exceed ±20 V input relative to analog ground.

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### 7. Performance & Capabilities

Analog Performance
- Sampling Rate: 100 kS/s (10 µs per channel)
- Resolution: 16 bits (1 part in 65,536)
- Input Range: ±10 V (bipolar)
- Accuracy: ±0.1 % FS typical
- Input Impedance: ≥ 1 MΩ
- Crosstalk Considerations: Use buffer amplifiers for > 1 MHz signals or high‑impedance sources.

Digital I/O Performance
- Logic Level: LVTTL (0–3.3 V)
- Input Filter: Selectable 1 µs digital filter
- Output Drive: 8 mA sink capability

Counter Performance
- Frequency Range: DC to 10 MHz
- Count Range: 0 to 4,294,967,295 (32 bit)
- Output Pulse Width: 1 µs typical
- Gate Control: High = Enable, Low = Disable

Buffer Operation
- FIFO Mode: Sequential data readout (first‑in first‑out)
- Ring Mode: Circular buffer for continuous streaming with overwrite

Limitations
- Non‑isolated inputs require common ground reference.
- High‑frequency signals (> 1 MHz) may introduce channel crosstalk without buffering.
- Two cables required to access all 64 channels (CNA + CNB).

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### 8. Standards & Compliance

- Bus Standard: PCI Express Base Specification Rev. 1.0a (x1)
- Electrical Levels: LVTTL logic for all digital I/O and control signals
- Environmental: Operating 0–50 °C, 10–90 % RH (non‑condensing)
- Safety & EMC: VCCI Class A compliant
- Environmental Regulation: RoHS Directive compliant
- Compatibility: Connector and function compatible with AD16‑64(LPCI)LA

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### 9. Additional Information

Software Support & Utilities
- API‑AIO(WDM): Windows driver library (DLL‑based Win32 API) with sample programs for Visual Basic and Visual C++.
- API‑AIO(LNX): Linux driver modules and shared libraries with gcc samples.
- C‑LOGGER: Graphical data‑logger software for signal display, zoom, file storage, and Excel export.
- ML‑DAQ: MATLAB library integrated with Data Acquisition Toolbox.
- VI‑DAQ: LabVIEW VI library for direct device access and simplified DAQ configuration.

Maintenance & Calibration
- Factory‑calibrated before shipment.
- User can perform software‑based recalibration using a precision voltage source (≥ 5 decimal digits).
- Factory settings can be restored via calibration utility.

Warranty & Support
- Warranty Period: Three (3) years from date of purchase.
- Coverage: Defects in materials and workmanship (excludes wear and misuse).
- Service: Return to CONTEC or authorized distributor with RMA and proof of purchase.
- Technical Support: Documentation, drivers, and updates available at [https://www.contec.com](https://www.contec.com).

Safety & Handling Precautions
- Do not install or remove the board with power on.
- Avoid contact with edge connectors; clean with industrial alcohol if touched.
- Keep analog and digital grounds separate to reduce noise.
- Use shielded cables to meet EMC requirements.
- Operate only in non‑corrosive, dust‑free environments.

Physical Design
- Compact low‑profile form factor (121.69 × 67.90 mm) fits small PC chassis.
- Two 68‑pin connectors (CNA and CNB) provide full channel access.
- FPGA‑based signal processing and DC/DC converter for stable operation.

Performance Comparison with AD16‑64(LPCI)LA
| Parameter | AI‑1664LA‑LPE | AD16‑64(LPCI)LA |
|------------|----------------|-----------------|
| Bus Type | PCI Express x1 | PCI 32‑bit 33 MHz |
| Power Supply | +3.3 V 620 mA max | +5 V 450 mA max |
| Logic Level | LVTTL | TTL |
| Dimensions (mm) | 121.69 × 67.90 | 121.69 × 63.41 |
| Weight | 90 g | 60 g |

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### Summary

The CONTEC AI‑1664LA‑LPE is a robust, high‑resolution, multi‑channel analog input board engineered for precision data acquisition over the PCI Express bus. Its 16‑bit A/D converter, 64 channels, and flexible triggering options make it suitable for laboratory, industrial, and embedded measurement systems. The inclusion of digital I/O, a high‑speed counter, and comprehensive software support (Windows, Linux, MATLAB, LabVIEW) ensures seamless integration into diverse applications. With RoHS/VCCI compliance, software‑based calibration, and a three‑year warranty, the AI‑1664LA‑LPE delivers reliable, long‑term performance for professional data‑acquisition environments.