Agilent
N9923A FieldFox
RF Vector Network Analyzer
2 MHz to 4/6 GHz
Data Sheet
Table of Contents
Definitions ...................................................................................................................... 2
FieldFox RF Vector Network Analyzer ....................................................................... 3
Cable and Antenna Analyzer (Option 305) ............................................................. 10
External USB Power Sensor Support (Option 302) ............................................... 10
Vector Voltmeter (Option 308) .................................................................................. 11
Block Diagram ............................................................................................................. 11
General Information .................................................................................................... 12
N9923A FieldFox RF VNA Options ........................................................................... 14
N9923A Upgrade Options .......................................................................................... 15
Calibration Kits ............................................................................................................ 15
FieldFox Data Link Software ..................................................................................... 16
Definitions
Specification (spec.)
Warranted performance. Specifications include guardbands to account for the
expected statistical performance distribution, measurement uncertainties, and
changes in performance due to environmental conditions. The following conditions must be met:
• FieldFox has been turned on for 10 minutes.
• FieldFox is within its calibration cycle.
• FieldFox remains at a stable surrounding environment temperature (between
-10 to 55 °C) for 90 minutes prior to turn-on and during operation.
Typical (typ.)
Expected performance of an average unit at a stable temperature between 20 °C
to 30 °C for 90 minutes prior to turn-on and during operation; does not include
guardbands. It is not covered by the product warranty. The FieldFox must be
within its calibration cycle.
Nominal (nom.)
A general, descriptive term or design parameter. It is not tested, and not covered
by the product warranty.
Calibration
The process of measuring known standards to characterize an instrument’s
systematic (repeatable) errors.
Corrected (residual)
Indicates performance after error correction (calibration). It is determined by the
quality of calibration standards and how well “known” they are, plus system
repeatability, stability, and noise.
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FieldFox RF Vector Network Analyzer
Description
Frequency range
Frequency reference
Accuracy ±2 ppm
Aging rate ±1 ppm/yr
Temperature stability ±1 ppm over -10 to 55 ºC
Frequency resolution 1 Hz < 3.2 GHz
Data points 101, 201, 401, 601, 801, 1001, (10,001 with SCPI)
Measurements S11, S21 magnitude and phase
Formats Log magnitude, linear magnitude, VSWR,
Directivity
Corrected, with full two-port
calibration, N9910X-800 calibration
kit (option 122)
Corrected with QuickCal (option 112) 38 dB (typical)
System impedance 50Ω (nominal) 75Ω with appropriate adapter and
System dynamic range1 (IF bandwidth = 300 Hz)
2 MHz to 6 GHz 90 dB 100 dB (typical)
Receiver dynamic range2 (IF bandwidth = 300 Hz)
2 MHz to 6 GHz 104 dB (typical)
Receiver compression level at 0.1 dB compression +10 dBm (typical)
Test port output power
High +5 dBm (nominal)
Low -40 dBm (nominal)
Test port 1 or 2 damage level
2 MHz to 6 GHz +23 dBm
Trace noise (high output power, IF bandwidth = 300 Hz)
Magnitude < 3 GHz, 0.008 dB rms (typical)
Temperature stability
Stability magnitude 0.01 dB/ºC at 23 ºC ±5 ºC (typical)
IF bandwidths 300 Hz, 1 kHz, 3 kHz, 10 kHz, 30 kHz
Specification Supplemental Information
2 MHz to 4 GHz Option 104
2 MHz to 6 GHz Option 106
1.2 Hz > 3.2 GHz
S22, S12 magnitude and phase (option 122)
phase, Smith chart, polar, group delay
42 dB
calibration kit
> 3 GHz, 0.01 dB rms (typical)
1. System dynamic range = source maximum output power - receiver noise floor
2. Receiver dynamic range = receiver maximum input level - receiver noise floor
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FieldFox RF Vector Network Analyzer (continued)
Description
Display range
Log magnitude S11 or S22 -1000 to 1000 dB
Log magnitude S21 or S12 -1000 to 1000 dB
Log magnitude resolution 0.01 dB
Phase -180 to +180 degrees
Phase resolution 0.01 degrees
VSWR 1.01 to 1000
VSWR resolution 0.01
Averaging 2 to 999
Number of traces Four traces available. Tr1, Tr2, Tr3, Tr4
Data markers Each trace has six independent markers that can be displayed simultaneously.
Marker formats Default marker format is the trace format. In Smith chart or polar format,
Marker functions Peak, Next Peak, Peak Left, Peak Right, Mkr→ Center, Min Search, Peak
Sweep type Linear
Sweep time Set sweep time in seconds
Sweep trigger Continuous, single
Display formats Single-trace
Display data Display data, memory, data and memory, or data math
Trace math Vector division or subtraction of current linear measurement values and
Scale Autoscale, scale, reference level, reference position
Title Add custom titles to the display.
Limit lines Define test limit lines that appear on the display for go/no go testing. Lines
Calibration Types
CalReady Each FieldFox is calibrated at the test port.
Frequency response Simultaneous magnitude and phase correction of frequency response errors
Enhanced response Corrects for frequency response and source match for transmission
1-port calibration Corrects for directivity, frequency response, and source match errors.
Information
Averages vector data on each successive sweep
Delta markers are available for each marker.
[Real +Imag] or [Mag and Phase] formats are also available.
Excursion, Peak Threshold
Dual-trace overlay (both traces on one graticule)
Dual-trace split (each trace on separate graticules)
Three-trace split (each trace on separate graticules)
Quad-trace split (each trace on separate graticules)
memory data.
Autoscale: Automatically selects scale resolution and reference value to
center the trace. Autoscale all scales all visible traces.
may be any combination of horizontal, sloping lines, or discrete data points.
Each trace can have its own limit line.
for either reflection or transmission measurements.
measurements, and corrects for reflection frequency response, directivity and
source match errors for reflection measurements.
4
FieldFox RF Vector Network Analyzer (continued)
Description
2-port calibration
(with option 122)
1-port QuickCal
(with option 112)
2-port QuickCal
(with option 112 and 122)
Guided calibration wizard FieldFox’s calibration wizard recommends a calibration type and calibration
Interpolated error correction With any type of accuracy enhancement applied, interpolated mode
Information
Full 12-term error correction. Corrects for directivity, source match,
reflection frequency response, load match, and transmission frequency
response for an N9923A with option 122, full two-port S-parameters.
Unknown thru and QSOLT are both available.
Corrects for directivity, frequency response, and source match errors, using
internal and external standards.
Full 12-term error correction. Corrects for directivity, source match,
reflection frequency response, load match, and transmission frequency
response.
kit based on selected parameters and connector types. Alternatively, users
can select their own calibration type and calibration kit.
recalculates the error coefficients when the test frequencies are changed.
The number of points can be increased or decreased and the start/stop
frequencies can be changed, but the resulting frequency span must be a
subset of the original calibration frequency span.
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