© National Instruments | 1-11
NI SCB-68A User Manual
Securing the Cover on the SCB-68A
In most cases, attaching the cover with the integrated magnets is sufficient. To permanently
secure the cover to the SCB-68A base, you will need two M3 × 6 (4-40 × 5/16) thread-forming
Phillips panhead screws, such as Taptite
Trilobular
screws. You can purchase Taptite screws
from many vendors. Complete the following steps.
1. Using a 3.5 mm (9/64 in.) diameter drill bit, drill two holes through the silkscreened
crosshairs on the label side of the cover. When drilling, place the cover on a flat surface,
such as a drill press, and drill slowly to minimize burrs.
2. Replace the cover on the base, lining up the drill holes with the holes in the enclosure.
3. Screw the M3 × 6 (4-40 × 5/16) screws in with a torque of 8–10 in. ⋅ lb.
Soldering and Desoldering Components on the
SCB-68A
Some applications require you to make modifications to the SCB-68A, usually in the form of
adding components to the printed circuit device.
Soldering Equipment
To solder components on the SCB-68A, you need the following:
#1 and #2 Phillips screwdrivers
0.125 in. flathead screwdriver
Soldering iron and solder
Long nose pliers
Components specific to your application
Removing the SCB-68A Board from the Base
Complete the following steps to remove the SCB-68A from the base.
1. Disconnect the 68-pin cable from the SCB-68A, if connected, and remove the top cover.
2. Loosen the strain-relief screws, shown in Figure 1-1, with a #2 Phillips screwdriver.
3. Remove any signal wires from screw terminals with a flathead screwdriver.
4. Remove the printed circuit board mount screws and chassis ground lug, shown in
Figure 1-2, with a #1 Phillips screwdriver.
5. Remove the 68-pin connector screws, shown in Figure 1-7, with a flathead screwdriver.
To Next Page
Loading...
Need help?
General
