Appendix A
Specifications
© National Instruments Corporation
A-3
SCXI-1120 User Manual
Note:
You can find the temperature T (
°
C) as follows:
T (
°
C) = T
K
- 273.15
where T
K
is the temperature in kelvin
T
K
=
1
a
+
b lnR
T
(
)
+
c lnR
T
(
)
3
[
]
a = 1.288 x 10
-3
b = 2.356 x 10
-4
c = 9.556 x 10
-8
R
T
= resistance of the thermistor in
Ω
R
T
=
50,000
V
TEMPOUT
2.5
−
V
TEMPOUT
V
TEMPOUT
= output voltage of the temperature sensor
Physical
Dimensions
1.2 by 6.8 by 8.0 in.
Connectors
50-pin male ribbon-cable rear connector
32-pin DIN C male front connector
(18-screw terminal adapter available)
Operating Environment
Temperature 0
°
to 50
°
C
Relative humidity
5% to 90% at 35
°
C
Storage Environment
Temperature -55
°
to 150
°
C
-55
°
to 125
°
C for the SCXI-1328
Relative humidity
5% to 90% noncondensing
