background image

3

MTEMP

Thermocouple

- (red)

+ (white)

Thermocouple

This wire grounds the 

thermocouple to the 

chassis ground of the 

terminal block.

Chassis Ground

- (red)

+ (white)

MTEMP

        

a) SCXI-1300

  

b) SCXI-1303

Figure 2. Connecting a Thermocouple to Channel 0 of the SCXI Terminal Block

Step 2. Assemble Your SCXI System

A.  Configure the SCXI-1102 Module and Terminal Block—Most configuration

settings of the SCXI-1102 are set via software. The SCXI-1102 does include
one jumper, W1, which you should leave in the factory-default position
(position P). You do not need to modify the setting of W1 jumper unless you
are daisy-chaining multiple SCXI chassis and a cable is attached directly to
the SCXI-1102.

Note:

The SCXI-1300 and SCXI-1303 include a jumper to select the MTEMP or DTEMP channel
for the cold-junction sensor input. When used with the SCXI-1102, the position of this
jumper is irrelevant; MTEMP and DTEMP are connected internally in the SCXI-1102.

B.

Insert the SCXI-1102 module into your SCXI chassis.

C.  Cable SCXI module to your DAQ board—If you are using a plug-in DAQ

board, connect the SCXI-1102 to your DAQ board using the appropriate
SCXI-134X cable assembly.

If you are using the SCXI-1200 module, install the module into your SCXI
chassis and connect the SCXI-1200 to the parallel port of your PC, using the
cable included in the SCXI-1200 kit.

D. Attach terminal block—Finally, plug the SCXI-1300 or SCXI-1303 terminal

block onto the front of the SCXI-1102 module.

Summary of Contents for SCXI SCXI-1102

Page 1: ...and use They serve as a starting point for more complicated programs Following the programming instructions this note includes some useful background information a brief description of thermocouple op...

Page 2: ...diskette includes example programs written in LabVIEW LabWindows CVI and C for this application Step 1 Connect The Thermocouple Wire the thermocouple to channel 0 on your SCXI terminal block For the J...

Page 3: ...d a cable is attached directly to the SCXI 1102 Note The SCXI 1300 and SCXI 1303 include a jumper to select the MTEMP or DTEMP channel for the cold junction sensor input When used with the SCXI 1102 t...

Page 4: ...d Step 3 Configure Your Software Note If you are using a plug in DAQ board and have not installed and configured the board you should do so now Refer to your hardware user manual for instructions To c...

Page 5: ...menu to open the SCXI Configuration window 1 Select your chassis type 4 Click here to configure Module 1 These settings will be set auto matically for you 2 Select chassis slot 1 3 Select the SCXI 110...

Page 6: ...are shown below 1 Click here and choose SCXI configuration 1 Select your chassis type 2 Select the SCXI 1102 module 3 Select your DAQ board 4 Select chassis slot number 5 Choose multiplex mode 6 Set...

Page 7: ...ws the fundamental steps in programming the SCXI 1102 for thermocouples Start Read Cold Junction Temperature Voltage CJTEMP Read Thermocouple Voltage Convert Thermocouple Reading to Temperature Units...

Page 8: ...pensation When you connect a thermocouple wire to your terminal block you create one or two additional thermocouples where the sensor wire contacts the terminal You must account for the voltage genera...

Page 9: ...ain of 1 or 100 This amplification yields an input voltage range of 10 V or 100 mV This gain can be combined with gain on the DAQ board or module for higher amplification For example an AT MIO 16E 2 c...

Page 10: ......

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