NI PXI-6602

Technical Specifications: Counters/Timers: 8 × 32 bit independent counters Digital I/O: 32 bidirectional TTL/CMOS compatible digital lines Frequency Measurement Range: 0 Hz to 80 MHz Logic Level: 5 V Digital Filter: Built-in digital debounce filters DMA Transfer: Up to three simultaneous high-speed DMA transfers

Function Features: Programmable counter source and gate selection. Software configurable count up / count down. Supports single pulse and continuous pulse train generation. Programmable signal polarity. Hardware and software triggering.

Application Scenarios: Encoder position acquisition, frequency and period measurement, pulse width test, industrial pulse generation, timing synchronization, quadrature encoder measurement.

Material Composition: Front panel: aluminum alloy. PCB: multi-layer FR4 board. Front connector: multi-pin shielded connector.

Structural Features: 3U single slot PXI form factor. Onboard timing logic chipset. Separate digital signal ground.

Working Principle: Onboard NI-TIO timing chip counts edge events from external digital or reference clock signals. Counters record pulse number, period or frequency. The module outputs digital pulses or pulse trains under hardware timed control.

Installation Requirements: Install in 3U PXI chassis. Connect external digital signals with 5 V logic compatible cables. Install NI-DAQmx driver.

Usage Notes: Match external signal voltage to 5 V logic threshold. Debounce filter setting must match input signal noise. Limited DMA channels, use interrupt transfer when DMA exhausted. Avoid overvoltage on digital input pins.