5 Key Reference
Delta
| Activates a second marker at the position of the | |
| first marker. (If no marker is present, two markers | |
| appear at the center of the display). The amplitude | |
| and frequency (or time) of the first marker is | |
| fixed. The marker number is indicated above the | |
| delta marker, and the same number is indicated | |
| with an R (for example, 1R) above the reference | |
| marker. Use the data controls to position the delta | |
| marker. Annotation in the active function block | |
| and in the upper- right corner of the display | |
| indicates the frequency (or time) and amplitude | |
| differences between the two markers. The markers | |
| will be turned off if the scale type is changed | |
| between log and linear. | |
| Press Delta again moves the reference marker to the active | |
N O T E | ||
marker position, so you are allowed to make delta | ||
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| measurements from differing reference points without having | |
| to turn off the makers and begin again. | |
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| |
| The delta marker function permits | |
N O T E | ||
measurements provided the signal is a single spectral | ||
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| component (sinusoid). Place a normal marker on the signal, | |
| press Delta, place the delta marker in the noise, and activate | |
| Marker Noise. The indicated amplitude indicates | |
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Key access: [MARKER]
Off
Turns off the active function markers.
Key access: [MARKER]
84 | N9340A User’s Guide |