Current Resistors in SCXI-1102 w/block 1300

[complexity]

I have a SCXI-1102/B/C module.  Currently, each channel is only receiving a voltage signal, but I would like use a 249 Ohm resistor to transform one channel to current-to-voltage converter (per SXI1102/B/C user manual).  The signals are connected through a SCXI-1300 block connector.  My concern is if the block connector is capable of this configuration (receiving a 4-10 mA signal) or do I require the 1308 block connector?  Thanks.

[AlanArmstead]

Hello complexity,

You can certainly use the SCXI-1300 connector block to measure current, but you must have your own precision resistors, and connect them outside of your terminal block.  The SCXI-1308 connector block has built-in 249 Ohm precision resistors to make that process a little easier.  Keep in mind, the SCXI-1102 module only measures voltage, not current.  So this is why we must convert the current to a voltage (by sending the current through a resistor) before we acquire data.  After acquiring the data, the driver does the math to determine what current the acquired voltage value corresponds to, based on the value of the resistor. 

-Alan A.