NI PXIe-4302/4303 and TB-4302/4302C | © National Instruments | 17
Calibration Interval
TB-4302............................................................ No calibration
TB-4302C ......................................................... 1 year interval (verification only)
Electrical
TB-4302
Input range........................................................ Refer to NI PXIe-4302/4303 Specifications
CJC accuracy .................................................... 1.5 °C
1, 2
TB-4302C
Input range
Nominal .................................................... ±20 mA
Minimum .................................................. ±20.38 mA
Typical ...................................................... ±20.68 mA
Current shunt
Value ......................................................... 5 Ω
Accuracy ................................................... 0.5% max
Temperature stability ................................ 25 ppm/°C
Input impedance
between AI to AISENSE .................................. 47 Ω
Max voltage of AISENSE ................................ ±8.4 V
V
sup
pins
Current ...................................................... 2 A max
Voltage ...................................................... 30 V max
Overvoltage protection
between AI, AISENSE, and AIGND................ ±30 V for up to two AI pins
Mechanical
Screw terminal wire gauge ............................... 1.5 mm
2
(16 AWG), max
1
Combines CJC sensor accuracy and temperature difference between the CJC sensor and each screw
terminal.
2
Represents performance for wire gauge of 24 AWG.
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