Keysight N9912A - Operation in Modes

5-20 Keysight N9912A Service Guide
Theory of Operation
Operation in Modes
5-
Operation in Modes
The FieldFox User’s Guide describes the various modes of operation and
describes the user interface for each mode. The following information
describes how the hardware is used in the various modes to make
measurements.
There are four basic modes of operation:
— CAT—Cable and Antenna Test
— NA—Network Analyzer
— SA—Spectrum Analyzer
—PM—Power Meter
CAT and NA modes have similar capabilities but are separate modes of
operation.
Additional modes of operation may be created as new firmware is developed.
The four basic modes listed above represent how the hardware may be used to
make basic measurements. Additional modes will provide customized user
interfaces but will not change how the basic measurements are performed.
The following table indicates port functionality for each mode of operation and
the required options. See the “Service Related User Operations” section of
Chapter 8 for more details.
For a given mode, the analyzer “remembers” the most recent state of the
current mode when you change to another mode.
For most screens under System 7 key, the current measurement mode
continues to operate while the screen is displayed. For instance, while the
battery information screen is displayed, the measurement mode remains
active.
Table 5-1 Port Function by Mode
Measurement
Mode
RF OUT
Port
RF IN
Port
Required
Option(s)
CAT
(One Port)
Input/Output Inactive None
(standard)
CAT
Insertion Loss
Output Input 110
NA
S11
Input/Output Inactive 303
NA
S21
Output Input 110 and 303
SA Inactive Input 230 or 231
Power Meter Inactive Inactive 302