Making Measurements Using Spectrum Analyzer Mode
Adjusting the resolution bandwidth may result in a decrease in amplitude of the signal. This is known as a tracking error. Tracking errors occur when the tracking generator’s output frequency is not exactly matched to the input frequency of the spectrum analyzer. Tracking errors are most notable when using narrow resolution bandwidths. Tracking error can be compensated manually or automatically. In narrow bandwidths, the manual method of adjusting the tracking is usually faster than the automatic tracking adjustment. To compensate for the tracking error manually, press (AUX], Track Gen , and MAN TRK ADJUST , then use the knob to adjust the trace for the highest amplitude. To compensate for the tracking error automatically, press (AUXCTRL), Track Gen , then
TRACKING PEAK .
IEF | 48.8 | dBmV | AT 10 | d!3 |
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| TRACKING | ||||
jB/ |
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WA | SB |
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CORR |
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CENTER 350 0 | MHZ |
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| #RES | BW | 10 | kHr |
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| VBW 10 CHL | SWP | 15.0 | set |
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Figure 5.8. Manual Tracking Adjustment Compensates for Tracking Error
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