Column Control DTX

Tips for Preventing Damage to Digital Multimeters

Technical Overviews

Ensure proper grounding

  • Always use the three-prong AC power cord supplied with the instrument.
  • Proper grounding of the instrument will prevent a build-up of electrostatic charge which may be harmful to the instrument and the operator.
  • Do not damage the earth-grounding protection by using an extension cable, power cable or autotransformer without a protective ground conductor.
  • Check AC power quality and polarity; typical AC voltage required is 100 V, 120 V, 220 V ± 10% or 240 V +5%/–10%. Typical expected grounding wire resistance is < 1 Ω, the voltage between neutral and ground line is < 1 V. Install uninterruptible power supply [UPS] if necessary.
  • For more information, view “Considerations for Instrument Grounding - Application Note”.

 

 Read the warning labels and specifications

  • Do not exceed the values provided in the specifications guide or as indicated by the yellow warning labels on the instrument.
  • Refer to the specification guide for conditions required to meet the listed specification. Note information regarding stabilization time, instrument settings and calibration/alignment requirements.

Avoid overpowering the analyzer

  • Avoid damage to the digital multimeter (DMM) by having some idea of the signal level to be measured. 
  • Before turning on or turning off the connected equipment or the DUT, reduce the signal level to the minimum safety level. 
  • Current input terminals (I) are rated at ± 1.5 A peak with a maximum non-destructive input of < 1.25 A RMS.

Check for proper temperature and humidity

  • Keep DMM in a clean and dry environment. Temperature for typical storage condition is between –40 and 75 °C, Humidity < 95% RH.
  • Ensure proper ventilation among racks. Temperature for optimal operating is 23 to –5 °C, always keep DMM ambient temperature at < 30 °C.
  • Cooling vents and fans should be inspected and cleaned frequently.

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Column Control DTX