Chapter 2 Parts Locator and Wiring Guide
© National Instruments Corporation 2-3 SCB-68 Shielded Connector Block User Manual
To connect signals to the SCB-68, complete the following steps while
referring to Figure 1-1, SCB-68 Parts Locator Diagram, and to Figure 2-1.
1. Disconnect the 68-pin cable from the SCB-68, if it is connected.
2. Remove the shielding screws on either side of the top cover with a
Phillips-head number 1 screwdriver. You can now open the box.
3. Configure the switches and other options relative to the types of signals
you are using.
4. Loosen the strain-relief screws with a Phillips-head number 2
screwdriver. Slide the signal wires through the front panel strain-relief
opening. You can also remove the top strain-relief bar if you are
connecting many signals. Add insulation or padding if necessary.
5. Connect the wires to the screw terminals by stripping off 0.25 in. of the
insulation, inserting the wires into the green terminals, and tightening
the screws.
6. Reinstall the strain-relief bar (if you removed it) and tighten the
strain-relief screws.
7. Close the top cover.
8. Reinsert the shielding screws to ensure proper shielding.
You can now connect the SCB-68 to the 68-pin I/O connector.
Switch Configuration
The SCB-68 has five switches that must be properly configured to use the
SCB-68 with the DAQ device. Table 2-1 illustrates the available switch
configurations and the affected signals for each switch setting. Refer to
Table 2-1 to determine the switch setting that applies to your application,
and then refer to the following sections for more information on specific
types of signals.