NI PXI-2501/2503 Current-Loop Receivers
The NI PXI-2501/2503 modules have sockets for transforming individual channels to current-to-voltage converters. NI offers a process-current pack of four 249 Ω, 0.1%, 5 ppm, 0.25 W resistors. The reference designator format for the current-loop resistors is such that for input channel x, the resistor is RCLx. For example, the resistor for channel 14 is RCL14.
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Caution Before installing the resistors in your module, make sure that no signals are connected to your module front connector. |
Before installing your module in the NI PXI chassis, you must install the resistors by performing the following steps:
- Ground yourself using a grounding strap or a ground connected to your PXI chassis. Properly grounding yourself prevents damage to your PXI module from electrostatic discharge.
- Bend and trim the resistor lead as shown in the following figure. Be sure that the resistor does not extend more than 0.5 in. above the surface of the circuit board.
- Insert the resistor into the appropriate socket, labeled RCLx.