NI 6143 Specifications
This document lists the I/O terminal summary and specifications for the
NI PCI/PXI-6143.
For the most current edition of this document, refer to ni.com/manuals.
Refer to the DAQ Quick Start Guide for more information about accessing
documents on the NI-DAQ CD.
Note With NI-DAQmx, National Instruments has revised its terminal names so they are
easier to understand and more consistent among NI hardware and software products. The
revised terminal names used in this document are usually similar to the names they replace.
For a complete list of Traditional NI-DAQ terminal names and their NI-DAQmx
equivalents, refer to the Terminal Name Equivalents table in the S Series Help.
Table 1. I/O Terminal Summary
Specifications
The following specifications are typical at 25 °C unless otherwise noted.
Analog Input
Input Characteristics
Number of channels ............................... 8 differential
ADC resolution ...................................... 16 bits, 1 in 65,536
Sampling rate
Maximum........................................ 250 kS/s
Minimum ........................................ 0 S/s
Accuracy ......................................... ±50 ppm for internal time
Input coupling ........................................ DC
Input range ............................................. ±5 V
Input impedance
AI + to AI GND.............................. 100 M? in parallel with 10 pF
AI – to AI GND .............................. 100 M? in parallel with 10 pF
Input bias current ................................... ±20 pA typ, ±150 pA max
Input offset current................................. ±3 pA typ, ±20 pA max
Max working voltage for all analog input channels
Positive input (AI +) ....................... ±7 V
Negative input (AI –)...................... ±7 V
Overvoltage protection
(AI +, AI –) ............................................ ±15 V
Input current during
overvoltage conditions ........................... ±5.7 mA max
Input FIFO size ...................................... 2,046 samples
Data transfers ......................................... DMA, interrupts,
programmed I/O
DMA mode ............................................ Scatter-gather
DC Transfer Characteristics
DNL ........................................................±0.8 LSB typ, no missing codes
INL..........................................................±1.5 LSB typ, ±3.0 LSB max
System noise ...........................................0.8 LSBrms
Dynamic Characteristics
Phase mismatch ......................................±0.5° at 100 kHz
Crosstalk .................................................–90 dB at 50 kHz
Bandwidth...............................................490 kHz
SINAD ....................................................89 dB at 10 kHz
CMRR.....................................................75 dB at 60 Hz
SFDR ......................................................98 dB at 10 kHz
THD ........................................................–96 dBc at 10 kHz
Stability
Recommended warm-up time.................15 min
Onboard Calibration Reference
Level................................................2.50 V (±2.5 mV)
(actual value stored in EEPROM)
Temperature coefficient...................±7.0 ppm/°C max
Long-term stability ..........................±20 ppm/
Table 2. NI 6143 Analog Input DC Accuracy Information
Nominal
Range
at Full
Scale (V)
Absolute Accuracy
Gain
Error
(% of
Reading)
Offset
+INL
Error
(μV)
Gain Tempco
Ext./Int. Cal
(%/°C)
Offset
Tempco
(μV/°C)
Random
Noise
(μVrms)
Absolute
Accuracy at
Full Scale
(mV)
Relative
Accuracy
(mV)
±5.0
0.05
600
0.0007/0.0003
104
122
3.613
0.0488
Note: Accuracies are valid for measurements following an internal S Series calibration. Averaged numbers assume averaging
of 100 single-channel readings. Measurement accuracies are listed for operational temperatures within ±1 °C of internal
calibration temperature and ±10 °C of external or factory-calibration temperature. NI recommends a one-year calibration
interval. The Absolute Accuracy at Full Scale calculations were performed for a maximum range input after one year and
100 points of averaged data.
1,000
