Overview - Agilent Technologies FieldFox N9913A User Manual

Overview

In the FieldFox, both 1-port and 2-port measurement types use a different
configuration setup from the HP/Agilent 8508A Vector Voltmeter.
Typical 8508A measurement configuration –as shown in the 8508A manual.
The above block diagram requires an external source and directional coupler to
measure the electrical length of a DUT or cable to be trimmed. Separate paths
are used to measure the Incident signal (A) and Reflected signal (B). To measure
the ratio of the Reflected/Incident signals, you were required to select B/A for
both the Magnitude and Phase display.
In the FieldFox, the source and directional coupler are inside the instrument.
This allows you to connect the DUT to ONLY the FieldFox PORT 1, with NO
external instruments, in order to make Cable Trimming measurements.
See the FieldFox block diagram and Cable Trimming procedures beginning on
page 145.
VVM Mode Settings
Select VVM Mode before making any setting in this section.
How to select VVM Mode
 Press Mode
 Then
Measurement Selection
How to select a VVM Measurement
 Press Measure 1
 Then choose from the following:
VVM (Vector Voltmeter) Mode
VVM
1-Port Cable Trimming
o
this measurement on page 145.
1-port reflection measurement. Learn how to make
141