I. Digital Inputs (DI) – 16 ch, isolated, sink/source

• Channels: 16 isolated digital inputs (Bank 0)NI

• Voltage Range: ±30 VDCNI

• Logic Thresholds: Low ≤ +4 V, High ≥ +11 V

• Input Type: sink or source configurableNI

• Filtering: programmable debounce filters per channel

• Max Rate: ~100 kHz (software dependent)

• Functions: change detection, event counting, status monitoring

II. Digital Outputs (DO) – 16 ch, isolated, source

• Channels: 16 isolated digital outputs (Bank 1, source)NI

• Voltage Range: 0 ~ +30 VDC (source, high active)NI

• Load Current:

  • Continuous: 75 mA/channel

  • Peak: 350 mA/channel

• Output Type: source (supplies positive voltage to load)NI

• On‑Resistance: < 1 Ω (typical)

• Power‑On State: programmable (high/low/hold)NI

• Max Switching Rate: ~100 kHz

• Functions: single/ group control, pulse, software PWM, watchdog safety

III. Industrial Features

• Watchdog Timer: 1–65535 ms; fault → safe state (high/low)NI

• Programmable Power‑On: prevents unexpected actuationNI

• Dual‑Bank Isolation: DI bank / DO bank isolated from each other & system groundNI

• Overcurrent Protection: per‑channel current limiting

• High CMR: robust for motors, inverters, relays

IV. Physical & Environmental

• Size: half‑length PCI, ~12.4 × 12.6 × 2.2 cm

• Weight: ~0.15 kg

• Temperature: 0 ~ 55 °C (oper), −20 ~ 70 °C (storage)

• Humidity: 10%–90%, non‑condensing

• Isolation Voltage: ≥ 500 Vrms (banks to system ground)

• Power: +5 V @ ~150 mA; +3.3 V @ ~300 mA

V. Wiring Highlights

• DI (sink/source): sensor to +24 V or GND; threshold +4 V low / +11 V high

• DO (source): load between DO(+) and GND; DO high = ONNI

• Inductive loads: add 1N4007 freewheeling diode across coil

• Shielding: shield to isolated field ground, not system ground

VI. Core Advantages & Applications

• 16 isolated DI (sink/source) + 16 isolated source DO, ±30 V, 75 mA continuous source outputsNI

• Dual‑bank optical isolation, watchdog, programmable power‑on, NI‑DAQmx, half‑length PCINI

• Ideal for 24 V industrial sensors + relay/valve control, mixed I/O, manufacturing test, industrial automationNI