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  1. EEcarl

    Termination Resistors for PCM bus

    It is a flat cable, so cutting it just after the last PCM connector won't work. I will check with a scope. I will populate the board with pull downs and choose the values when I have protos. Thanks.
  2. EEcarl

    rf remote control / in-car

    Im not sure I would buy a wireless or RF controller. If I were in the market for a steering wheel transmission shifter I would want it to be wired, probably CAN bus. An IR will need line of sight, and it is likely you will obstruct the transmitter at times.
  3. EEcarl

    Termination Resistors for PCM bus

    There are terminations at the boards. Just not on the far end board, it does not use the PCM. The PCM is only transferred within 6" of the cable, the other 18" does not require it, but I can terminate at that end if needed.
  4. EEcarl

    Termination Resistors for PCM bus

    I have an app that uses a 24" cable with multiple connectors at different intervals on it. It carries a digital audio PCM bus and other signals. The PCM signals are only used on 6" of the cable, from there to the other end they are currently left floating. My question is should I terminate them...
  5. EEcarl

    Looking for test probe wire

    Hello, I have been looking for a type of test probe wire for 5 years now, and someone here has to know about this stuff. Here goes. It is about 22 guage comes on a spool and has single .100" female connectors about every 6" daisy chaned on the wire. It is a priceless complement to scopes and...
  6. EEcarl

    Single Pull up/down resistor for multiple Pins

    I have always been told not to use one pull up/down resistor for more than one pin. Whether it is used for unused Input pins or multiple Enable pins. However I am starting to see it in some schematics. Can anyone tell me why this shoudl not be done other than for ATE simplification?
  7. EEcarl

    PCB pointer labels

    Does anyone know where to get stickers/labels in the shape of and arrow or pointer to indicate a specific area of a PCB? I did not see them at Avery or Digikey.

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