©
National Instruments Corporation
11
BNC/TC-2095 Rack-Mount Adapter Installation Guide
Configuring the Cold-Junction Sensor (TC-2095 Only)
The TC-2095 jumper W1 is set by factory-default to multiplexed
temperature sensor (MTEMP) mode. This setting multiplexes the
cold-junction sensor for SCXI modules operating in multiplexed mode.
Refer to Figure 3 for the location of jumper W1.
Do
not
change the factory-default position of jumper W1.
Table 3 shows the jumper W1 settings.
Temperature Sensor Output and Accuracy
The TC-2095 temperature sensor voltage output varies from 1.91 to
0.58 VDC over the 0 to 55 °C temperature range. Table 4 shows the
temperature sensor output accuracy.
To select and read the temperature sensor, refer to the driver software
documentation for programming information.
Table 3.
Jumper W1 Settings for the TC-2095
Jumper W1 Position
Description
MTEMP (CJTEMP)
mode—Factory-default setting.
Do not change the jumper
position.
Table 4.
Temperature Sensor Voltage Output Accuracy
Temperature Range
Voltage Output Accuracy
1
0 to 15 °C
±1.0 °C
15
to 35 °C
±0.65 °C
< 35 to 55 °C
±1.0 °C
1
Includes the combined effects of the temperature sensor accuracy and the temperature
difference between the temperature sensor and any screw terminal. The terminal sensor
accuracy includes tolerances in all component values, the effects caused by temperature
and loading, and self-heating.
W1
MTEMP
DTEMP
