제품소개

제품소개

USB-6281 / 780053-09

ㆍ▷ 16 AI (18-비트, 625 kS/s), 2 AO (2.86 MS/s), 24 DIO

ㆍ▷ 16 SE/8 DIFF AI channels; 625 kSamples/s single channel, 500 kSamples/s multichannel

ㆍ▷ ±10 V to ±0.1 V input range

ㆍ▷ Two 16-bit AO channels; 2.86 MSample/s single channel, 2.00 MSamples/s dual-channel

Data sheet

Features
▷ 16 SE/8 DIFF AI channels; 625 kSamples/s single channel, 500 kSamples/s multichannel
▷ ±10 V to ±0.1 V input range
▷ Two 16-bit AO channels; 2.86 MSample/s single channel, 2.00 MSamples/s dual-channel
▷ 24 5 V logic DIO lines; 8 hardware-timed up to 1 MHz
▷ Two 32-bit, 80 MHz counter/timers
▷ 64 screw terminals or one 68-pin SCSI mass term I/O connectivity

Specification & Introduction
 Analog Input
▷ Number of channels 
    8 differential or 16 single ended
▷ ADC resolution 
    18 bits
▷ DNL 
    No missing codes guaranteed
▷ INL 
    Refer to the AI Absolute Accuracy section
▷ Sample rate
    Single channel maximum 
        625 kS/s
    Multichannel maximum (aggregate) 
        500 kS/s
    Minimum 
        No minimum
▷ Timing accuracy 
    50 ppm of sample rate
▷ Timing resolution 
    50 ns
▷ Input coupling 
    DC
▷ Input range 
    ±0.1 V, ±0.2 V, ±0.5 V, ±1 V, ±2 V, ±5 V,
    ±10 V
▷ Maximum working voltage for analog inputs (signal + common mode)
    ±10.4 V of AI GND
▷ CMRR (DC to 60 Hz) 
    110 dB
▷ Input impedance
    Device on
        AI+ to AI GND 
            >10 GΩ in parallel with 100 pF
        AI- to AI GND 
            >10 GΩ in parallel with 100 pF
    Device off
        AI+ to AI GND 
            820 Ω
        AI- to AI GND 
            820 Ω
▷ Input bias current 
    ±100 pA
▷ Crosstalk (at 100 kHz)
    Adjacent channels 
        -75 dB
    Non-adjacent channels 
        -90 dB1
▷ Small signal bandwidth (-3 dB) 
        750 kHz
▷ Input FIFO size 
        2,047 samples
▷ Scan list memory 
        4,095 entries
▷ Data transfers 
    PCI/PXI 
        DMA (scatter-gather), interrupts,
        programmed I/O
    USB    
        USB Signal Stream, programmed I/O
▷ Overvoltage protection for all analog input and sense channels
    Device on 
        ±25 V for up to four AI pins
    Device off 
        ±15 V for up to two AI pins
▷ Input current during overvoltage condition 
    ±20 mA maximum/AI pin

Ordering Information