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3 Spectrum Analyzer Mode

3.5 ACP Measurement

This sets the top line to 10dBm with each vertical division representing 1dB. Thus,

if a point on trace 1 is on the fifth graticule line from the top, it represents 5dBm and

will read out remotely as 5.

Example 2

Set the following:

–

Display Scale (Lin)

–

Y Axis Unit, Volts

–

Ref Level, 100mV (10mV/div)

This sets the top line to 100mV and the bottom line to 0V, so each vertical division

represents 10mV. Thus, if a point on trace 1 is on the fifth graticule line from the

top, it represents 50mV and will read out remotely as 50.

NOTE

The units of current (A, dBmA, dBuA) are calculated based on 50 Ω input

impedance.

Transducer Unit

Transducer Units (formerly called Antenna Units) are units of field strength rather

than amplitude, and are used when correcting the response of device such as

antennas whose amplitude characteristics are measured in units of field strength.

All five of the Transducer Units (dBmA/m, dBmV/m, dBG, dBpT, dBmA) are treated

by the instrument exactly as though they were dBmV, when uncorrected. You must

load an appropriate correction factor using Input/Output, Corrections for accurate

and meaningful results.

If a remote command is sent to the instrument that uses one of the Transducer Units

as a terminator, the instrument treats it as though DBUV had been sent as the

terminator.

When a Correction is turned on that uses a Transducer Unit, the Y Axis Unit changes

to that Transducer Unit. All of the selections in the Y-Axis Unit dropdown are then

grayed-out, except the Transducer Unit selection. The unit being used is shown on

this selection in square brackets, and appears on the control in square brackets

preceded by Xducer Unit.

Example:

If the Transducer Unit in the Correction is dBmV/m, then the selection in the

dropdown looks like this:

Spectrum Analyzer Mode User's &Programmer's Reference 893

Keysight x-series User Manual

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