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  1. beyersk

    Dual bus serial comms (RS232 & RS485)

    Thanks. You are right, some will smoke others won't, but I won't know what the customer's got. So I'll stick with old fashioned jumpers or use the LTC1387 or MAX3160 when plug-n-play weighs more than economics.
  2. beyersk

    spi and rs232

    You would definately have to use a amplifier if the signal is only 0-30mV, also the diff input means you also need an instrumentation amplifier to handle that. Thus, it realy seems you need a complete designed system. Look at PC Data Acquisition Cards or something like the ADAM modules. Go to...
  3. beyersk

    spi and rs232

    Hi CTzar The easiest would probably be if you use a Maxim-Dallas 1-wire A/D converter like the DS2450 which has 4 channels at 16 bit resolution. Dallas does supply a device that you may plug into your serial com port on the PC to communicate with their 1-wire devices. The internet site of...
  4. beyersk

    Dual bus serial comms (RS232 & RS485)

    Yes, I want combined RS232 and RS485 abilities on one bus, i.e. single connector with only max. 3 wires connected in connector (Gnd, Tx/A (RS232/RS485), RX/B (RS232/RS485) ). Thus the user can plug in with either bus protocol, and the system must preferably check what bus protocol the user is...
  5. beyersk

    Dual bus serial comms (RS232 & RS485)

    Hi I know one gets IC's that can do it in one, but they are generally expensive and sometime not normally stocked by our suppliers making for lon lead time on manuf. I want to use MAX232 eqv. and say LTC485 to make a dual bus where the user can connect to unit via RS232 or RS485. The problem...

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