![background image](http://html.mh-extra.com/html/national-instruments/scxi-1338/scxi-1338_installation-manual_710180008.webp)
©
National Instruments Corporation
7
SCXI-1338 Installation Guide
Specifications
All specifications are typical at 25 °C unless otherwise specified.
Electrical
Compatible modules
SCXI-1120/D .................................. 8 input channels
SCXI-1125 ...................................... 8 input channels
SCXI-1126 ...................................... 8 input channels
Coupling................................................. DC
1
Current-receiver resistors
Resistor provided ............................ 1 per channel, socketed
(8
total)
Resistance ....................................... 249
Ω
Resistance accuracy ........................ ±0.1%
Temperature coefficient .................. 10 ppm/°C
Wattage ........................................... 0.25 W
Maximum working voltage
( common – mode)
Channel to ground........................... Each channel must remain within
300 V
rms
or ±300 VDC of ground
Channel to channel.......................... Each channel must remain within
300 V
rms
or ±300 VDC of the
voltage applied to any other
channel
Maximum input current ......................... ±20 mA
Field-wiring connectivity
Screw terminals for signals............. 16 (8 pairs)
Screw terminals
for functional earth ground ............. 2
Safety earth-ground lugs ................. 1
Strain relief ..................................... Strain-relief bar at
terminal block entrance
Maximum wire gauge ..................... 16 AWG
1
In instrumentation terminology,
DC coupling
means that both DC and AC signals are passed.
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com