[Diy_efi] wide band O2's

[gary]

MessageAs I understand it, WB controller (analog) circuitry that relies on 
a sensor calibration resistor without manual calibration, does not 
allow for sensor outputs as they drift over time/use.  The sensors 
drift, but the calibration resistor stays the same.  I question the 
accuracy over time/use.

GAS
  ----- Original Message ----- 
  From: WopOnTour 
  To: diy_efi at diy-efi.org 
  Sent: Tuesday, July 05, 2005 10:08 PM
  Subject: Re: [Diy_efi] wide band O2's


  Wouldn't it depend on what ASIC was chosen to provide nurnst and 
  pumping cell current control and AC-DC measurement?...  It's been 
  known that these ASICS do not require routine calibration as they 
  derive a trim solution based on the sensor calibration resistance. 

  ----- Original Message ----- 
    From: gary 
    To: diy_efi at diy-efi.org 
    Sent: Tuesday, July 05, 2005 5:15 PM
    Subject: Re: [Diy_efi] wide band O2's


    I thot digital was 'state of the art'.  Isn't PLX analog?  
    I question the accuracy.

    GAS

      ----- Original Message ----- 
      From: Brian McMahan 
      To: diy_efi at diy-efi.org 
      Sent: Tuesday, July 05, 2005 10:42 AM
      Subject: RE: [Diy_efi] wide band O2's


      If you want state of the art you should try the PLX R-500. It's the 

      best I've ever used.

      www.plxdevices.com 
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