Comprehensive Product Summary – ADLINK PCI‑9826H/512 PCI AD Digitizer Card

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### 1. Product Overview

Product Name: PCI‑9826H/512
Model: PCI‑9826H
Series: PCI/PXI‑98x6 High‑Speed 16‑bit Digitizer Series
Article Number: PCI‑9826H/512
Manufacturer: ADLINK Technology Inc.
Part Number: 50‑17031‑1020
Manual Revision: 2.02 (October 5, 2010)

The ADLINK PCI‑9826H/512 is a high‑performance PCI‑bus analog‑to‑digital (AD) digitizer card designed for high‑speed waveform acquisition and analysis. It belongs to ADLINK’s PCI/PXI‑98x6 family, which includes the PCI/PXI‑9816 (10 MS/s), PCI/PXI‑9826 (20 MS/s), and PCI/PXI‑9846 (40 MS/s) models. The PCI‑9826H variant provides four simultaneous 16‑bit analog input channels with a maximum sampling rate of 20 MS/s per channel, a ±1 V or ±5 V programmable input range, and 512 MB of onboard SDRAM for extended waveform capture.

This card is optimized for applications requiring high dynamic range and precise timing, such as radar, ultrasound, software‑defined radio, and scientific instrumentation.

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### 2. Key Features

- High‑Speed Sampling: 4 simultaneous 16‑bit ADC channels, each capable of up to 20 MS/s sampling rate.
- Deep Onboard Memory: 512 MB SDRAM shared across channels for long waveform recording independent of PCI bus bandwidth.
- Programmable Input Range: Software‑selectable ±1 V or ±5 V input range for flexible signal scaling.
- Selectable Input Impedance: 50 Ω or 1 MΩ input impedance, software‑configurable for high‑frequency or high‑impedance sources.
- Wide Analog Bandwidth: Typical 9.6 MHz (‑3 dB) bandwidth at 50 Ω input impedance.
- Flexible Triggering: Supports software, external digital, and analog triggers, as well as PXI STAR and PXI Trigger Bus sources.
- Multiple Trigger Modes: Post‑trigger, pre‑trigger, middle‑trigger, delay‑trigger, and re‑trigger acquisition modes.
- Multi‑Module Synchronization: Synchronize multiple digitizers via PXI Trigger Bus or SSI interface for scalable systems.
- Auto‑Calibration: Built‑in precision 5 V reference with ±3 ppm/°C drift for fully automated calibration.
- Scatter‑Gather DMA: Efficient high‑throughput data transfer to host memory without large contiguous buffers.
- PXI and PCI Compatibility: Available in both PXI 3U Eurocard and standard PCI half‑length form factors.
- Software Support: Compatible with ADLINK DAQPilot, DAQMaster, and WD‑DASK drivers for Windows, LabVIEW®, and MATLAB®.
- High Dynamic Performance: Typical SINAD 78.6 dBc, SFDR 88.9 dBc, and ENOB 12.77 bits at 20 MS/s.

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### 3. Technical Specifications

Analog Input
- Channels: 4 single‑ended, simultaneous sampling
- Connector Type: BNC (CH0–CH3)
- Input Impedance: 50 Ω or 1 MΩ (software‑selectable, default 50 Ω)
- Input Coupling: DC
- Input Range: ±1 V or ±5 V (software‑selectable)
- Overvoltage Protection: ±15 V for ±1 V/±5 V range
- ADC Resolution: 16 bits (1 in 65,536)
- Crosstalk: ≤ –80 dB at 1 MHz (50 Ω input)
- Offset Error: ±0.3 mV typical
- Gain Error: ±0.05 % (±1 V range), ±0.06 % (±5 V range)
- Bandwidth (‑3 dB): 9.6 MHz typical @ 50 Ω; 90 kHz @ 1 MΩ
- System Noise: 6 LSB RMS (±1 V range), 4 LSB RMS (±5 V range)

Spectral Performance (typical, 0.998 MHz input, 50 Ω)
- SINAD: 78.63 dBc (±1 V), 74.44 dBc (±0.2 V equivalent)
- SNR: 79.95 dBc
- THD: –88.29 dBc
- SFDR: 88.88 dBc
- ENOB: 12.77 bits

Timebase and Sampling
- Internal Oscillator: 20 MHz ±25 ppm
- External Clock Input: SMB connector, 50 Ω AC‑coupled, 1–2 V p‑p sine or square wave
- External Clock Sources: CLK IN, PXI STAR, PXI Trigger Bus[0..7], PXI 10 MHz, SSI bus
- Sampling Rate Range: 20 MS/s – 1.192 S/s (24‑bit divider)
- Timebase Export: Selectable PXI Trigger Bus line

Triggering
- Sources: Software, external digital (TRG IO), analog (CH0–CH3), PXI STAR, PXI Trigger Bus[0..7], SSI bus
- Modes: Pre‑trigger, post‑trigger, middle‑trigger, delay‑trigger, re‑trigger
- TRG IO Connector: SMB, bidirectional
- Input Compatibility: 3.3 V LVTTL (5 V tolerant)
- Input Thresholds: VIH ≥ 2.0 V, VIL ≤ 0.8 V
- Output Compatibility: 3.3 V TTL, VOH ≥ 2.4 V, VOL ≤ 0.2 V, 8 mA drive
- Minimum Pulse Width: 20 ns
- Analog Trigger Resolution: 8‑bit (256 steps across full scale)
- Trigger Level Range: Full input range (±1 V or ±5 V)

Data Storage and Transfer
- Onboard Memory: 512 MB SDRAM shared among channels
- Transfer Method: Scatter‑gather DMA (bus‑mastering)

Onboard Reference
- Reference Voltage: 5 V precision source
- Temperature Drift: ±3 ppm/°C
- Warm‑up Time: 15 minutes

Physical and Environmental
- Form Factor: Standard height, half‑length PCI card (167.64 mm × 106.68 mm)
- Slot Width: 1 PCI slot
- Operating Temperature: 0 °C – 50 °C (PCI version)
- Storage Temperature: –20 °C – 85 °C
- Humidity: 10 % – 90 %, non‑condensing
- Power Requirements:
- +12 V @ 0.3 A
- +5 V @ 1.5 A
- +3.3 V @ 0.8 A
- Total Power: ~13.7 W
- EMC Compliance: EN 55022 (emission), EN 55024 (immunity)

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### 4. Functionality

The PCI‑9826H digitizer converts analog input signals into 16‑bit digital data using four simultaneous ADCs. Each channel’s signal passes through a programmable gain amplifier, anti‑aliasing filter, and protection circuitry before digitization. The digitized data are stored in onboard SDRAM and later transferred to the host PC via DMA.

Use Cases and Applications:
- Software‑defined radio and wireless communication analysis
- Radar, sonar, and lidar signal acquisition
- Ultrasound and medical imaging systems
- Scientific and industrial research instrumentation
- Military and laboratory test systems

Compatibility:
- PCI 32‑bit/66 MHz interface supporting both 3.3 V and 5 V signaling
- Compatible with ADLINK’s DAQPilot, DAQMaster, and WD‑DASK drivers
- Supports Windows‑based environments, LabVIEW®, MATLAB®, and ActiveX automation

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### 5. Components & Accessories

Included Items:
- PCI‑9826H/512 digitizer card
- ADLINK All‑in‑One Software CD
- Software installation guide
- User’s manual

Front Panel Connectors:
- CH0–CH3 (BNC): Analog input channels
- TRG IO (SMB): Bidirectional trigger input/output
- CLK IN (SMB): External timebase input

Optional Accessories:
- ACL‑SSI‑2/3/4 Cables: For synchronizing 2–4 PCI‑98x6 modules via SSI interface
- PXI Trigger Bus Cables: For PXI multi‑module synchronization

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### 6. Installation & Setup

Requirements:
- Available PCI slot (32‑bit, 66 MHz)
- Anti‑static workstation and wrist strap recommended
- Operating environment: 0–50 °C, 10–90 % RH

Installation Steps (PCI version):
1. Power off the computer and remove the cover.
2. Insert the PCI‑9826H card into an available PCI slot.
3. Secure the bracket with the retaining screw.
4. Replace the cover and power on the system.
5. Install drivers and software from the ADLINK All‑in‑One CD.

Software Configuration:
- Use DAQMaster to detect and configure the device.
- Use DAQPilot for task‑oriented setup and data acquisition.
- For advanced control, use WD‑DASK API for custom applications.

Board Identification:
- Each PCI card includes a DIP switch (positions 1–5) for unique board ID assignment when multiple cards are installed.

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### 7. Performance & Capabilities

Sampling and Timing:
- Internal 20 MHz oscillator provides stable timebase with ±25 ppm accuracy.
- External clock input allows synchronization with other instruments.
- Sampling rate adjustable via 24‑bit divider (TIMEBASE / ScanIntrv).

Triggering Performance:
- Supports software, analog, and digital triggers with 20 ns minimum pulse width.
- Analog trigger slope selectable (rising/falling).
- Delay‑trigger and re‑trigger modes enable segmented acquisitions.

Data Throughput:
- Onboard SDRAM buffers high‑speed data to overcome PCI bandwidth limits.
- Scatter‑gather DMA ensures efficient transfer of large datasets.

Dynamic Range and Accuracy:
- 16‑bit resolution with ENOB ≈ 12.8 bits.
- SFDR ≈ 89 dBc, SINAD ≈ 79 dBc, THD ≈ –88 dBc.
- Offset error ≤ ±0.3 mV; gain error ≤ ±0.06 %.

Limitations:
- Bandwidth limited to ~9.6 MHz (‑3 dB) at 50 Ω input.
- 1 MΩ input mode bandwidth reduced to ~90 kHz.
- External clock must be continuous for proper ADC operation.

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### 8. Standards & Compliance

- PCI Interface: 32‑bit, 66 MHz, 3.3 V/5 V signaling
- PXI Compatibility: PXI Trigger Bus, PXI STAR, PXI 10 MHz clock (for PXI version)
- EMC Compliance: EN 55022 (emission), EN 55024 (immunity)
- Safety: CE‑compliant design; conforms to industrial environmental standards
- Calibration Reference: Internal 5 V precision source, ±3 ppm/°C drift
- Operating Environment: 0–50 °C (PCI), 0–55 °C (PXI), non‑condensing humidity

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### 9. Additional Information

Warranty & Support:
ADLINK provides standard warranty coverage and global technical support through regional offices in Taiwan, USA, China, Europe, Japan, Korea, Singapore, and India.

Maintenance:
- Perform periodic calibration using the built‑in auto‑calibration function.
- Avoid electrostatic discharge during handling.
- Ensure adequate ventilation and avoid exposure to moisture.

Software Updates:
- Latest drivers and SDKs available from [www.adlinktech.com](https://www.adlinktech.com).
- DAQPilot and DAQMaster provide automatic update and configuration utilities.

Safety Notes:
- Operate within specified temperature and voltage limits.
- Disconnect power before installation or removal.
- Replace onboard lithium battery only with approved type to avoid explosion risk.

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### Summary

The ADLINK PCI‑9826H/512 is a robust, high‑resolution, four‑channel digitizer optimized for high‑speed data acquisition and waveform analysis. With 20 MS/s per channel, 16‑bit resolution, and 512 MB onboard memory, it delivers precise, low‑noise performance for demanding applications. Its flexible triggering, synchronization, and calibration features make it ideal for laboratory, industrial, and defense measurement systems requiring accurate, repeatable signal capture.

The card’s combination of deep memory, programmable input ranges, and comprehensive software support ensures seamless integration into automated test setups, research instrumentation, and real‑time signal processing environments.