NI PXI-6602 Timing and Digital I/O Module

The NI PXI-6602 is a timing and digital I/O module for PXI systems that delivers eight 32-bit up/down counters/timers and 32 lines of 5 V TTL/CMOS-compatible digital I/O. The module handles encoder position measurement, event counting, period and pulse width measurement, pulse generation and train generation, and frequency measurement with maximum source frequencies reaching 125 MHz using prescaling. It provides six trigger lines with PXI trigger bus support, three simultaneous high-speed DMA transfer channels, and 8X or 2X prescaling options on every counter. The 32 digital I/O lines consist of 8 dedicated lines and 24 lines shared with counter/timers, all equipped with digital debouncing filters. Available base clocks include 100 kHz, 20 MHz, and 80 MHz, with base clock accuracy of 200 ppm (±0.02%) over temperature using PXI_CLK10.

– Technical Specifications

Counters and Timers
• 8 channels, 32-bit resolution
• Maximum source frequency: 80 MHz (125 MHz with prescalers)
• Prescaling: 8X or 2X on every counter, deactivatable
• Base clocks: 100 kHz, 20 MHz, 80 MHz
• Base clock accuracy: 200 ppm (±0.02%) over temperature

Digital I/O
• 32 lines: 8 dedicated, 24 shared with counter/timers
• 5 V TTL/CMOS compatible
• Digital debouncing filters

Triggering and Synchronization
• 6 trigger lines
• PXI trigger bus support
• 3 simultaneous high-speed DMA transfer channels

Physical and Environmental
• Dimensions: 6.3 inches × 3.9 inches (16.0 cm × 10.0 cm)
• I/O Connector: 68-pin female SCSI-II type
• Operating temperature: 0 °C to 55 °C
• Storage temperature: –20 °C to 70 °C
• Relative humidity: 0% to 90%, noncondensing
• Operating vibration: 0.3 grms (5 Hz to 500 Hz)
• Non-operating vibration: 2.4 grms (5 Hz to 500 Hz)

– Key Features

• Supports encoder position measurement, event counting, period measurement, pulse width measurement, pulse generation, pulse train generation, and frequency measurement
• Prescaling capabilities enable operation beyond base maximum frequencies
• Digital debouncing filters on all I/O lines reduce noise sensitivity

– Compatibility & Integration

Hybrid-slot-compatible for use in both PXI Express hybrid slots and standard PXI slots. Accessible in CompactPCI environments for elementary plug-in device functions only; PXI-specific functions unavailable in CompactPCI mode. NI-DAQmx driver software provides compatibility with LabVIEW, LabWindows/CVI, and Measurement Studio.