Using Vector Voltmeter Mode For The First Time - Anritsu MS2024B Manual

Vector Voltmeter, Option 15
Disclaimer (an important distinction): The Vector Voltmeter Option 15 in the
Anritsu VNA Master and LMR Master does not measure RF voltages. The
traditional vector voltmeter function of probing RF voltages (A and B) in
two channels, and displaying A, B, A/B, B/A, and the phase difference between
Note them is now obsolete, and those instruments are no longer available. The Vector
Network Analyzer has replaced the ratio functions of the vector voltmeters. The
Vector Network Analyzer measures those amplitude and phase ratios very
accurately. Thus it is a suitable replacement for the most used ratio function of
VVMs, that of measuring component parameters.
11-3

Using Vector Voltmeter Mode for the First Time

Before conducting a measurement in Vector Voltmeter mode, select a CW frequency and
perform a calibration. During calibration, choose between a 1-port or 2-port calibration
depending upon whether return or insertion type measurements (respectively) are desired.
The choice of whether to use a 1-port or a 2-port measurement is usually dictated by the
physical site configuration. If the DUT (device under test) is compact, such as cables or
amplifiers or filters, then the 2-port measurement may be used because both ends are
available near the Vector Network Analyzer. If a cable is already installed permanently, then
the 1-port methods are indicated because only the one end of the DUT is convenient to the
test port.
When making a 1-port connection to the DUT, select the Return measurement type and
perform a 1-port calibration. When making a 2-port connection to the DUT, select the
Insertion measurement type and perform a 2-port calibration. The following paragraphs
further explain these steps.
Vector Network Analyzer MG
11-3 Using Vector Voltmeter Mode for the First Time
PN: 10580-00289 Rev. K 11-3