Note
Do not use correction factors in a broadband,
•When there are multiple emitters with frequencies that are close to each other and the nearest calibration frequencies have very similar correction factors.
Correction factors should NOT be used:
•When the frequencies of the emitters are diverse. Correction factors may vary considerably and there is no way to determine the distribution of energy from the various emitters. It is more accurate not to use a correction factor under these conditions. See Measurement Uncertainty on page 27.
To use a correction factor for a probe in memory...
1.Press F4 (FREQ) from the measurement screen. A new screen will appear to allow you to enter a frequency.
2.Enter the frequency for which you want to correct readings. Make sure you fill in all four positions. If you make a mistake just enter more digits until correct. For greater accuracy, use the units that allow the larger numbers. For example, enter 10kHz, not 00.01 MHz.
3.Change the units (if needed) by pressing either F1 (kHz), F2 (MHz), or F3 (GHz).
4.Press F4 (SAVE). The meter will automatically calculate the correction factor for the frequency you have entered from the two closest correction factors that were stored when you put the probe in memory. The calculated numeric value will be displayed briefly before the meter automatically returns to the measurement screen. See page 64 for a more complete description.
5.The frequency that you are correcting for will be displayed on the right side of the third line of the display.
Chapter 4 Making a Measurement | 25 |