Agilent Technologies 35670A User Manual

To measure a narrowband spectrum
1 Complete the previous task, “To measure a wideband spectrum.”
2 Activate the trace containing the signal component you want to examine more closely.
3 Press [
Marker
], then press [
MARKER ON OFF
] to highlight ON.
4 Turn the knob to place the marker on the component.
5 Press [
Freq
][
CENTER
], then press the [
Mkr Value
] hardkey (located on the numeric
keypad).
6 Press [
SPAN
], then press the down-arrow hardkey to narrow the frequency span.
7 If averaging is enabled, press [
Start
] to begin measuring.
The [
Mkr Value
] hardkey provides a quick way to enter the current value of the
marker readout in a numeric entry softkey. It enters either the X-axis value or the
Y-axis value, depending on the requirements of the softkey. Be sure that
[
MARKER ABS REL
] (in the Marker menu) is set to ABS so the readout values represent
the marker’s actual position rather than its position relative to the marker reference.
Close-in sidebands on this 10.000 kHz crystal oscillator
signal are not visible with a wideband spectrum.
A narrowband spectrum reveals low-level 60 Hz
sidebands.
Agilent 35670A
Measuring Spectra and Networks Operator's Guide
4-4

Agilent Technologies 35670A Specifications

General

Brand	Agilent Technologies
Model	35670A
Category	Measuring Instruments
Language	English