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Chapter 4 Calibration Procedures
Test Considerations
4
4
Test Considerations
For optimum performance, all procedures should comply with the
following recommendations:
• Assure that the calibration ambient temperature is stable and
between 21 °C and 25 °C (23 °C
±2 °C).
• Assure ambient relative humidity is less than 80%.
• Allow a 1-hour warm-up period before verification or adjustment.
• Keep the measurement cables as short as possible, consistent with
the impedance requirements.
• Use only RG-58 or equivalent 50
Ω cable.
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