Keysight N9923A Service Guide 5-19
Theory of Operation
Operation in Modes
Operation in Modes
The N9923A FieldFox RF Vector Network Analyzer User’s Guide (Part Number
N9923-90001) 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
— VVM—Vector Voltmeter
— PM—Power Meter
CAT, NA, and VVM modes make similar measurements 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
“Service Related User Operations”
in
details.
Table 5-1
Port Function by Mode
Measurement
Mode
PORT 1
Port
PORT 2
Port
Required
Option(s)
CAT
(Return Loss)
Input/Output
Inactive
305
CAT
Insertion Loss
Output
Input
305
NA
S11
Input/Output
Inactive
None
(standard)
NA
S12
Input
Output
122
NA
S21
Output
Input
None
(standard)
NA
S22
Inactive
Input/Output
122
VVM
1-Port
Input/Output
Inactive
308
VVM
2-Port
Output
Input
308