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NI SCB-100 Installation Manual

100-pin shielded connector block
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NATIONAL
INSTRUMENTS
The Software is the Instrument
SCB-100 100-Pin Shielded
This guide describes how to connect and use the SCB-100 100-pin shielded connector block with
100-pin data acquisition (DAQ) products.
Introduction
The SCB-100 100-pin shielded connector block is a shielded board with 100 screw terminals that
connect to the AT-MIO-64E-3, AT-MIO-16DE-10, or other products using the 0.050 series
shielded D type I/O connector.
The terminal block has 100 screw terminals for easy connection to signal wires. A cold-junction
compensation temperature sensor is included for use with thermocouples. When the SCB-100
100-pin shielded connector block is used with other 100-pin products, bypass the accessories (the
cold junction compensation temperature sensor and the signal accessory power LED) using the
six switches, leaving a generic 100-screw terminal connector block. The SCB-100 also has a
strain-relief bar for securing signal wires or cables.
What You Need to Get Started
SCB-100 100-pin shielded connector block kit
SCB-100 100-pin shielded connector block
SCB-100 quick reference label
SCB-100 100-Pin Shielded Connector Block Installation Guide
100-pin cable (SH100100)
100-pin board
Philips-head #1 and #2 screwdrivers
0.125 in. flathead screwdriver
Long-nose pliers
Wire cutters
Wire insulation strippers
Soldering iron and solder
Resistors and capacitors (specific to your application)
320907A-01
© Copyright 1995 National Instruments Corporation. All rights reserved.
®
®
Connector Block
Installation Guide
February 1995

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Summary of Contents for NI SCB-100

  • Page 1 ® SCB-100 100-Pin Shielded Connector Block This guide describes how to connect and use the SCB-100 100-pin shielded connector block with 100-pin data acquisition (DAQ) products. Introduction The SCB-100 100-pin shielded connector block is a shielded board with 100 screw terminals that connect to the AT-MIO-64E-3, AT-MIO-16DE-10, or other products using the 0.050 series...

  • Page 2: Switch Settings And Temperature Sensor Configuration

    Switch Settings and Temperature Sensor Configuration To accommodate thermocouples, the SCB-100 100-pin shielded connector block has a temperature sensor for cold-junction compensation. To power the temperature sensor, switches S1, S2, and S3 must be on as shown in Figures 1, 2, and 3. Notice that this also causes the signal accessory power LED to be on.
  • Page 3 • For differential operation, connect the analog channel 0 to the temperature sensor by switching S5 and S4 to the up position, as shown in Figure 3. Figure 3. Differential Temperature Sensor Switch Configuration with Accessory Grounds Connected • For use with any 100-pin board, bypass all circuitry by switching S6 to the up position, as shown in Figure 4.

  • Page 4: Quick Reference Label

    A quick reference label is included to show switch configurations and define screw terminal pinouts for the AT-MIO-64E-3 and AT-MIO-16DE-10. Place it on the connector block’s inside cover for quick reference. Specifications This section lists the SCB-100 specifications. These ratings are typical at 25° C unless otherwise stated. General Number of screw terminals 101 (includes one no connect).

  • Page 5: Operating Environment

    If signal wires are connected to the SCB-100, dangerous voltages may exist even when the equipment is turned off. Before removing the cover, disconnect the AC power or any live circuit from the terminal block.

  • Page 6: Removing The Board

    You can remove the board from its housing to solder components into place. To remove the board, perform the following steps: 1. Disconnect the 100-pin cable from the SCB-100, if connected. 2. Remove the grounding screws on either side of the top cover with a Philips-head #1 screwdriver.
  • Page 7 Product Name Assembly Number Switches S4, S5, and S6 Screw Terminals 100-Pin I/O Connector Breadboard Area Signal Accessory Power LED Board Mount Screws Switches S1, S2, and S3 Jumper Trace (cut to disconnect) Figure 5. SCB-100 Terminal Block Parts Locator Diagram...

  • Page 8: Application Hints

    Refer to Figure 5 for more detail. Connecting Nonreferenced or Floating Signal Sources This section applies when the SCB-100 is used in conjunction with an analog input board such as the MIO-16D or MIO-64. A floating signal source is a signal source that is not connected in any way to the building ground system but has an isolated ground-reference point.

  • Page 9: Connecting Ground-Referenced Signal Sources

    Differential Inputs If the MIO DAQ board is configured for differential inputs, ground-referenced signal sources connected to the SCB-100 board do not require special components added to the SCB-100 board. For more detailed information on connections to ground-referenced signal sources and differential inputs, refer to the configuration chapter in your MIO board user manual.

  • Page 10: Optional Input Filtering And Broken Thermocouple Detection

    The sensor on the SCB-100 board is specified to be accurate to ±0.5° C. Minimize temperature differences between the sensor and the screw terminals by keeping the SCB-100 board away from drafts, heaters, and warm equipment.

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