Hello all and compliments of the season
I've recently picked up an N2758A CAN adaptor on Ebay very cheaply, the only problem is that it is sold as seen and does not have the cable to connect it to the 'scope.
I believe that the cable (part number N2758-61801) is still available for around £180 gbp, but as the device is an unknown I'd rather not spend that only to find that the adaptor is u/s.
I was wondering if there is any connection information available ?
Appreciating that the proper cable is at the very least a screened ribbon cable, I was wondering if I could make up a quick cable for testing the adaptor using just plain vanilla ribbon cable ?
Any help would be very much appreciated. Thanks in advance.
Kind Regards,
Robin
I've recently picked up an N2758A CAN adaptor on Ebay very cheaply, the only problem is that it is sold as seen and does not have the cable to connect it to the 'scope.
I believe that the cable (part number N2758-61801) is still available for around £180 gbp, but as the device is an unknown I'd rather not spend that only to find that the adaptor is u/s.
I was wondering if there is any connection information available ?
Appreciating that the proper cable is at the very least a screened ribbon cable, I was wondering if I could make up a quick cable for testing the adaptor using just plain vanilla ribbon cable ?
Any help would be very much appreciated. Thanks in advance.
Kind Regards,
Robin
I'm going to be referring to this link http://cp.literature.agilent.com/litweb ... -92001.pdf
which is the User's Manual for the N2758A so you can look at pictures and some info. As you can see on p.6, this is a 16-pin ribbon connector. It is a straight through connector with the nice red wire as pin 1. So you connect the red wire to pin 1 of the 40-pin connector going to the scope and on pin 1 of the 16-pin connector that will connect to the N2758A module. That's how the ribbon cable goes. As you know the other woven cable is more complicated so I'm not discussing that one.
Once you have this ribbon cable as you can read from the link, the RS-232 connectors will have the actual CAN bus with the pinouts for that 9-pin RS-232 found on p.15.
Now, the ribbon cable will have a viewable trigger and rx signals through channels 11 and 15 respectively, see p. 8. Of course you can also try to see the CAN signal through the analog channel 1 using the corresponding test points on the N2758A module.
Hope this helps, let me know if you have any questions.
edgardog