To measure frequency and amplitude
1 Complete the one of the previous tasks: “To measure a wideband spectrum” or “To
measure a narrowband spectrum.”
2 Activate the trace containing the signal component you want to measure.
3 If the marker is not already turned on, press [
Marker
], then press [
MARKER ON OFF
]to
highlight ON.
4 Turn the knob to place the marker on the component.
5 Read the frequency and amplitude from the marker readout.
The [
SPAN
]and[
RESOLUTN (LINES)
] softkeys—located under the [
Freq
]
hardkey—control the frequency resolution of the marker readout. Resolution
increases when you decrease the span or when you increase the number of lines that
areusedtodividethespan.
Frequency resolution is poorest at
full-span—marker readout for a 10.000
kHz crystal reads 9.984 khz.
Frequency resolution increases when
using a narrower span—marker readout
now indicates 10.002 kHz.
Agilent 35670A
Operator's Guide Measuring Spectra and Networks
4-5