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High-impedance mode for precision measurement unit

  • US 6,828,775 B2
  • Filed: 02/21/2003
  • Issued: 12/07/2004
  • Est. Priority Date: 02/21/2003
  • Status: Expired due to Fees
First Claim
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1. A method of operating a precision measurement unit (PMU) having an output amplifier that provides a forcing voltage or current to a device under test, comprising the steps of:

  • activating a high-impedance mode of said PMU to safely permit disconnection of said PMU from a first device under test by decoupling the output amplifier from an output terminal of the PMU and disabling operation of said output amplifier; and

    deactivating said high-impedance mode to safely permit connection of said PMU to a second device under test by coupling said output amplifier to said output terminal and enabling operation of said output amplifier.

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