HP Saw E4419B manual Setting the Units of Measurement

Power Meter Operation

Setting the Units of Measurement

Setting the Units of Measurement

The “dBm/W” menu is used to select the measurement units on the currently selected window. These can either be logarithmic (dBm or dB) or

linear (Watt or %) units. Preset sets the measurement units to dBm

Local

(logarithmic units). Table 2-5 shows which units are applicable to the individual measurement modes.

Press dBm/W , then select the unit of measurement from dBm , W , dB or

%. Softkeys which cannot be selected in your particular mode of operation appear with their text grayed out.

Note	When the unit of measurement is set to Watt, it is possible that
	negative power measurements may be displayed when measuring
	low power levels.
	Table 2-5: Measurement Units
	Measurement	Relative Mode Off					Relative Mode On1
	Mode	Linear			Log		Linear		Log
	Single Channel	Watt		dBm			%		dB
	Ratio	%		dB			%		dB
	Difference	Watt		dBm			%		dB
	1. When relative mode is on (that is,		Rel		,			is “On”), the
						Rel Off On
			Offset
	measurement is compared to a reference value.

HP E4419B User’s Guide 2-35