Twelve other mounting holes are provided: three larger holes in the corners of the board, and
nine smaller holes forming a grid in the center of the board in the prototyping area. These may
be used at the discretion of the module developer to provide mechanical fixturing as needed,
including shields, brackets, or mounting standoffs for custom secondary PCBs.
Figure 5. Mounting Hole Sizes and Locations
127.00 mm
(5.000 in.)
3X 66.68 mm
(2.625 in.)
3X 9.53 mm
(0.375 in.)
6.35 mm (0.250 in.)
0.0 mm (0.0 in.)
1.27 mm (0.50 in.)
253.54 mm (9.982 in.)
3X Ø 3.18 mm (0.125 in.)
Non-plated Thru Holes
3X Holes Reserved
for Extension HW
9X Ø 2.69 mm (0.106 in.)
Non-plated Thru Holes
3X 110.49 mm (4.350 in.)
3x 198.12 mm (7.800 in.)
0.0 mm (0.0 in.)
2X 11.94 mm (0.470 in.)
3X 19.05 mm (0.750 in.)
3X 123.83 mm
(4.875 in.)
Electrical Features
The Input Rails and Fuse
The module takes its power from the 24 V and 3.3 V provided by the chassis. 3.3 V is only
used for the VCCO of Bank 1 and other support circuitry such as the 40 MHz oscillator, flash
memory, and thermal sensors. The rest of the banks and the core power used by the CPLD
come from cascaded switcher regulators powered from an auxiliary 5 V supply connected to
the 24 V rail. Banks 2-4 can be set to different values to allow you to use different digital
standards available in the CPLD.
All the 24 V, 5 V, and Banks 1-4 VCCOs are available in the prototyping area to be used by
the support circuitry required by your design. You should make sure your design does not
exceed the power limitations of these rails.
As required by the
Switch Load and Signal Conditioning Module Design Specifications
, the
24 V power supply is protected by a 3.5 mA fuse. See the
SLSC-12101 Bill of Materials
for
more information.
8
|
ni.com
|
SLSC-12101 User Guide