II. Model Interpretation

PXI: 3U single slot, standard PXI bus (compatible with PXIe hybrid slots)

6509: 65xx series (industrial DIO), 96 channels, 24 mA high current version

Core Positioning: High drive + High reliability + High-density static DIO

Part Number: 778858-01

Status: Out of production;

III. Technical Parameters (25℃)

1. Digital I/O (DIO)

Channels: 96 bidirectional (5 V TTL/CMOS), 12 8-bit ports (Port0–Port11)

Drive: 24 mA drive per channel (directly drive SSR, relay, LED)

Level: Input 0–5.5 V (threshold 0.8 V/2.2 V); Output 0–5 V

Input Protection: ±20 V (up to 2 pins) NI

Pull-up / Pull-down: selectable per port (4.7 kΩ pull-up / 47 kΩ pull-down) NI

Power-on State: programmable (input pull-up / pull-down; output high / low)

Rate: Up to 1 MHz (software timing)

2. Industrial Enhancement Features

Watchdog: Outputs switch to safe state when software fails, with timeout configurable

Input Digital Filtering: Anti-jamming / De-scrambling, programmable filtering time

Change Detection: Port level change triggers interrupt, fast response

Overcurrent Protection: I/O connector with replaceable fuse

3. Physical and Environmental

Size: 3U single slot (16.0×10.0 cm, without connectors)

Operating Temperature: 0–55℃

Power Consumption: 375 mA@+3.3 V, 250 mA@+5 V (approximately 2.4 W)

Calibration: No calibration required (pure digital module)

IV. Interface and Communication Configuration

Front panel interface: 100-pin SCSI female connector (0.050 pitch)

Adapter cable: SH100-100, R1005050 (100-pin to 2×50-pin)

Terminal box: CB-100, SCB-100A

Bus: PXI (PCI, trigger, 10 MHz reference clock)

Driver: NI-DAQmx 7.1+, supports LabVIEW, Python, C#, TestStand

Synchronization: PXI trigger bus, multi-module synchronization

V. Core Functions

96 high-density + 24 mA high current: Single card covers a large number of switches / sensors / actuators, no external driver required, directly control SSR / relay.

Industrial-grade high reliability: Watchdog + power-on programmable + input filtering + change detection, suitable for harsh industrial environments.

Flexible port grouping: 12 independent 8-bit ports, can be grouped configured for input / output, programming efficient.

Strong anti-interference: ±20 V overvoltage protection, port selectable pull-up / pull-down, suppress noise and false triggering NI.

Static control stability: 5 V TTL compatible, 1 MHz software rate, suitable for steady-state signal monitoring and control.

VI. Application Scenarios

Industrial ATE and switch matrix: Large-scale relay / contactor control, PCB test channel switching, multi-station synchronous control.

Industrial automation I/O expansion: PLC expansion, cabinet indicator lights, valve / motor start-stop, SSR drive.

Sensor array monitoring: 96-channel synchronous acquisition of switch quantity / proximity switch / photoelectric sensor, status monitoring.

Equipment safety interlock: Watchdog + change detection builds a safety circuit, software failure automatically switches to safe state. Laboratory and Testing System: Multi-station fixtures, sample positioning, safety signal control.

VII. Operating and Maintenance Instructions

Installation and Power On

Disconnect the power card, and ensure the chassis is reliably grounded; after powering on, NI-DAQmx self-checks without preheating.

Operating Temperature: 0–55℃. Keep the air ducts unobstructed and avoid high temperatures.

Wiring and Operation

Avoid frequent plugging and unplugging of the 100-pin interface; it is recommended to use the CB-100 wiring box for intermediate connection.

Output **≤ 24 mA / channel**, avoid overcurrent; Input voltage **≤ 5.5 V**, be aware of the ±20 V protection limit.

Use shielded twisted-pair cables for long distances, and keep away from strong electricity / motor interference sources.

Daily Maintenance

Keep the interface clean, and prevent dust accumulation when not in use for a long time; no calibration required, and regularly check the tightness of the connection terminals.

Fuse blowout requires factory repair; do not replace it yourself.