Signal Connections Chapter 3
Lab-PC+ User Manual 3-28 © National Instruments Corporation
The GATE and OUT signals in Figure 3-17 are referenced to the rising edge of the CLK signal.
Cabling
National Instruments currently offers a cable termination accessory, the CB-50, for use with the
Lab-PC+ board. This kit includes a terminated, 50-conductor, flat ribbon cable and a connector
block. Signal input and output wires can be attached to screw terminals on the connector block
and thereby connected to the Lab-PC+ I/O connector.
The CB-50 is useful for initially prototyping an application or in situations where Lab-PC+
interconnections are frequently changed. When you develop a final field wiring scheme,
however, you may want to develop your own cable. This section contains information and
guidelines for designing custom cables.
The Lab-PC+ I/O connector is a 50-pin male ribbon cable header. The manufacturer part
numbers used by National Instruments for this header are as follows:
• Electronic Products Division/3M (part number 3596-5002)
• T&B/Ansley Corporation (part number 609-500)
The mating connector for the Lab-PC+ is a 50-position, polarized, ribbon socket connector with
strain relief. National Instruments uses a polarized (keyed) connector to prevent inadvertent
upside-down connection to the Lab-PC+. Recommended manufacturer part numbers for this
mating connector are as follows:
• Electronic Products Division/3M (part number 3425-7650)
• T&B/Ansley Corporation (part number 609-5041CE)
The following are the standard ribbon cables (50-conductor, 28 AWG, stranded) that can be used
with these connectors:
• Electronic Products Division/3M (part number 3365/50)
• T&B/Ansley Corporation (part number 171-50)