The RTI grid contains holes connected to the rear I/O connectors, XJ02 and XJ03, along with
several grounds, access to the 24 V supply from the backplane, and two pairs of holes
connected to each of the bank rails.
Each of the five grids has its own coordinate system. Rows are numbered from top to bottom,
and columns are marked with letters from left to right. Hole A1 is always at the top-left corner.
These coordinates are referenced in this document.
For a detailed assignment of the hole arrays, refer to the SLSC-12101 pinout sections of this
manual.
Power Consumption Validation
To ease the validation of power consumption in the module, you can monitor the power rails.
The 24 V and 3.3 V rails provided by the backplane go through bridge resistors that can be
removed so that current measurements can be performed. Resistor R 16 connects the
backplane 24 V rail to the module, and W1 provides two holes to connect a bypass cable for
current measurement or an external power supply. The 3.3 V rail uses resistor R168 as the
bridge and W6 as the bypass holes.
Figure 6. 24 V Bridge Resistor and Bypass Holes
The power supplies for banks 2-4 do not have a bridge resistor. Instead they are routed in such
a way that they have a thick trace on the primary side of the board so it can be cut. Holes exist
for bypass cables. A dotted line with a label of the bank it supplies power to indicates where
the trace should be cut. See the following figures.
Figure 7. Bank 2 Voltage Setting Header and Dotted Lines for Power Trace Cutting
SLSC-12101 User Guide
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© National Instruments
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