Agilent Technologies 8487D Podręcznik Użytkownika Pobierz pdf (Strona 74)

Power Meter Operation

Making Relative Measurements

2-34 Agilent E4418B User’s Guide

Making Relative Measurements

Relative mode allows you to compare any measurement result to a

reference value. The relative reading can be displayed in either dB or % by

pressing and selecting either or . When the measurement

result is displayed in % a prefix multiplier may be shown.

Relative mode is window dependent and when enabled displays “Rel” in

the window to which it’s applied.

Procedure

To set a reference value on the currently selected window:

1. Press .

2. Press to use the current reading as the reference value. This

allows you to compare any measurement result in dB or

percentage (%).

3. is automatically set to “On” when is pressed.

Successive measurements are now displayed relative to the reference

value. The relative mode can be disabled and re-enabled simply by

pressing .

dBm/W

dB %

Rel

Offset

Rel

Rel Off On Rel

Rel Off On

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Agilent Technologies 8487D Podręcznik Użytkownika Strona 74