Chapter 2
Installation
©
National Instruments Corporation
2-21
VXI-SC-1102 User Manual
Figure 2-1.
VXI-SC-1102 Parts Locator Diagram
Current-Loop Receivers
The VXI-SC-1102 has pads for transforming individual channels to
current-to-voltage converters. National Instruments offers an SCXI
Process Current Resistor Kit of four 249
Ω
, 0.1%, 5 ppm, 1/4 W
resistors. The reference designators for the current loop resistors have
the following format: for input channel
x
, the resistor is RCL
x
. For
example, the resistor for channel 28 is RCL28.
Warning:
Before installing the resistors in your submodule, make sure that there are
no signals connected to your submodule front connector.
Install the resistors by performing the following steps:
1.
Follow the instructions in the
VXI-SC-1000 Carrier Module
Installation Guide
to remove the VXI-SC-1102 submodule from
the carrier assembly.
2.
Bend and trim the resistor lead as shown in Figure 2-2. Be sure that
the resistor does not extend more than 0.65 in. above the surface of
the circuit board.
Figure 2-2.
Bent and Trimmed Resistor
3.
Insert the resistor into the appropriate pad, labeled RCL
x
.
4.
Solder the leads to the pad on the bottom side of the module.
5.
Follow the instructions in the
VXI-SC-1000 Carrier Module
Installation Guide
to replace the VXI-SC-1102 submodule in the
carrier assembly.
Summary of Contents for VXI-SC-1000
Page 1: ...VXI SC 1000...
