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Using the PCMCIA-CAN Synchronization Cable

Hardware: Industrial Communications>>CAN>>PCMCIA-CAN/2 Series 2

Problem:
The PCMCIA-CAN synchronization cable goes from a connector to ten wires. How should I connect them to my DAQ card to synchronize the two NI Hardware cards?

Solution:

The PCMCIA-CAN synchronization cable does provide the ability to synchronize a Series 2 PCMCIA-CAN card with other National Instruments hardware or external devices. This is done by using the synchronization cable to share Timing and triggering signals between the PCMCIA CAN RTSI line and the appropriate terminals on a DAQ terminal block.

The functionality of the PCMCIA-CAN synchronization cable is very similar to the RTSI bus for PCI hardware, with a few limitations:

• Four general-purpose I/O trigger lines, as opposed to seven for RTSI

• TRIG7_CLK clock line is an input-only signal that can receive a master timebase; the PCMCIA-CAN card cannot drive a timebase onto TRIG7_CLK.

See Table 1 for an explanation for each line and the Wire color.

Signal	Function	Wire Color
TRIG_0 (RTSI0)	General I/O Trigger	Red
TRIG_1 (RTSI1)	General I/O Trigger	Orange
TRIG_2 (RTSI2)	General I/O Trigger	Yellow
TRIG_3 (RTSI3)	General I/O Trigger	Green
TRIG7_CLK  (RTSI7/RTSI Clock)	Input-only timebase	White
GND	Ground	Black, Brown, Blue, Purple, Grey

Table 1: PCMCIA Synchronization Cable Wire Chart

To improve the signal integrity of the trigger lines, all GND wires should be connected to a digital logic ground system. Unused trigger lines may also be grounded.

Related Links:
Product Manuals: NI-CAN Hardware and Software Manual (2.4)


Attachments:


- PCMCIA CAN.JPG
- Table CAN PCMCIA.JPG



Report Date: 03/14/2007
Last Updated: 04/03/2007
Document ID: 47DDO0PS

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