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U2500A Series Side-by-Side Comparison

  
   U2531A  U2541A  U2542A
Analog Input   
Resolution14 bits16 bits16 bits
Number of channels4 differential input channels4 differential input channels4 differential input channels
Maximum sampling rate2 MSa/s250 kSa/s500 kSa/s
Analog Output   
Resolution12 bits12 bits12 bits
Number of channels222
Maximum update rate1 MSa/s1 MSa/s1 MSa/s
Function generator modeSine, square, triangle, sawtooth, and noise waveformsSine, square, triangle, sawtooth, and noise waveformsSine, square, triangle, sawtooth, and noise waveforms
Digital I/O   
Number of channels24-bit programmable input/output24-bit programmable input/output24-bit programmable input/output
CompatibilityTTLTTLTTL
General Purpose Digital Timer/Counter   
Maximum count(231 - 1) bits(231 - 1) bits(231 - 1) bits
Number of channelsTwo independent up/down countersTwo independent up/down countersTwo independent up/down counters
Input frequency range0.1Hz to 6MHz at 50% duty cycle  0.1Hz to 6MHz at 50% duty cycle0.1Hz to 6MHz at 50% duty cycle
Calibration1   
On-board reference voltage5V5V5V
Temperature drift±2ppm/°C±2ppm/°C±2ppm/°C
Stability±6 ppm/1000hrs±6 ppm/1000hrs±6 ppm/1000hrs
1:20-minute warm up time recommended