Appendix A
Specifications
A-6
ni.com
Noise, DC to 10 kHz...............................200
μ
V
pp
Remote sense ..........................................Error less than ±0.02% per ohm
of lead resistance, both leads
Protection................................................Surge arrestors in parallel with
excitation terminals, shunt to
ground
Bridge Completion
Half-bridge..............................................Two
precision resistors,
5 k
Ω
each, 0.1% ratio matching
Quarter-bridge ........................................Socketed resistor inside the
SCXI-1314 terminal block
1
Shunt Calibration
Type ........................................................Two independent points
Resistor ...................................................Socketed inside the SCXI-1314
terminal block
2
Switch resistance ....................................32
Ω
typ
50 Ω
max
Switch off leakage ..................................<1 nA
Switch break-down voltage ....................±60 VDC
Power Consumption
V+ ...........................................................18.5 to 25 VDC, +170 mA max
V– ...........................................................–18.5 to –25 VDC, –170 mA max
+5 V ........................................................+4.75 to 5.25 VDC, 50 mA max
1
Half-bridge completion is performed inside the module and configured under software control. The quarter-bridge completion
resistor is in the SCXI-1314 terminal block and is socketed. Resistors shipped with the SCXI-1314 are 120
Ω
and
350
Ω
(default value) RN-55 style (standard 1/4 W size). The tolerance is ±0.1% and the temperature coefficient is
10 ppm/°C max.
2
Shunt calibration resistors are in the SCXI-1314 terminal block and are socketed. Resistors shipped with the SCXI-1314
are 100 k
Ω
RN-55 style (standard 1/8 W size). The tolerance is ±0.1% and the temperature coefficient is 10 ppm/°C max.