Instructions

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only appears for ACPR measurement type. Opens a numeric entry screen enabling
the channel spacing to be entered in MHz.
Note the Span and associated RBW/VBW are not set by the Automatic Measurement function,
but must be set manually to an appropriate value. For further information about the Automatic
Measurements function see section 7.12.
4.7.3 Frequency Counter Options
A frequency counter can be selected to operate at the active marker point causing a
short pause as the measurement takes place. The counter provides much higher
accuracy than the marker readout since the latter is related to the span (accuracy =
span/270).
turns the counter function on or off. Note that the counter can also be turned on or
off from the Marker Function key pop-upsee section 4.6.1.
enables the resolution of the counter to be set to 1kHz, 100Hz or 10Hz.. The
measurement time is approximately 200ms for 1kHz resolution, 210ms for 100Hz
resolution, and 300ms for 10Hz resolution.
Frequency measurement is performed at the active marker frequency at the end of the sweep.
Note that the counter requires a signal to be continuously present at the marker point during the
period when the measurement is made. Modulation and other signal disturbances will cause
the counter reading to jitter.