164 Keysig ht N9923-90001 User’s GuideVVM (Vector Voltmeter) Mode - Option 308VVM Mode SettingsVVM Mode SettingsSelect VVM Mode before making any setting in this section.How to select VVM Mode— Press Mode— Then VVMMeasurement SelectionHow to select a VVM Measurement— Press Measure 1— Then choose from the following:— 1-Port Cable Trimming 1-port reflection measurement. Learn how tomake this measurement in “1-Port Cable Trimming Measurements ”on page 169.— 2-Port Transmission 2-port transmission measurement. Learn howto make this measurement in “2-Port Transmission Measurements”on page 171.— B/A and A/B 2-port ratioed receiver measurements using externalsources. Learn more in “A/B and B/A Measurements” on page 172.Frequency SelectionHow to set Frequency— Press Freq/Dist— Then Frequency— Enter a value using the numeric keypad, the arrows, or the rotaryknob.— After using the arrows or the rotary knob, press Enter. The incrementsetting of the arrows is based on the current span and can NOT be changedin VVM Mode.— After using the keypad, select a multiplier key. Learn about multiplierabbreviations in “Multiplier Abbreviations” on page 34.Display ResolutionYou can display either one digit or two digits after the decimal point for bothmagnitude and phase readings.