SIGLENT
SSA3000X User Manual 45
2.3.3.4 Freq Counter
Turn on or off the frequency counter. The frequency readout is accuracy is up to 0.01 Hz.
The function is invalid when selecting marker 2, 3, 4.
If marker 1 is selected but no active, turning on the frequency counter will open marker 1
Normal marker automatically.
The frequency counter measures the frequency near the center frequency in Zero span mode.
2.3.3.5 Off
Turn off the noise marker enabled, N dB BW measurement or Frequency Counter, but not the
marker itself.
2.3.3.6 Read Out
Select a desired readout type of the X-axis for the marker and different markers can use different
readout types. This setting will change the readout type and affect the marker readings in the
active function area and at the upper right corner of the screen, but will not change the actual
value.
1. Frequency
In this type, Normal marker shows the absolute frequency; while Delta marker and Delta Pair
marker show the frequency difference between the delta marker and reference marker. The default
readout mode in non-zero span mode is “Frequency”.
Note: This type is invalid in Zero span mode.
2. Period
In this type, Normal marker shows the reciprocal of frequency; while Delta marker and Delta Pair
marker show the reciprocal of frequency difference. When the frequency difference is zero, the
reciprocal is infinite and 100 Ts is displayed.
Note: This type is invalid in Zero span mode.
3. Δ Time
In this type, Normal marker shows the time difference between the marker and the start of the
sweep; while Delta marker and Delta Pair marker show the sweep time difference between the
delta marker and reference marker.
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