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Keysight Technologies
FieldFox RF Analyzer
N9912A 4/6 GHz
Technical Overview
02 | Keysight | FieldFox RF Analyzer - Technical Overview
Boost Your Readiness
Every piece of gear in your kit had to prove its worth. Measuring up and earning a spot is
the driving idea behind the Keysight Technology, Inc. FieldFox RF analyzers. It starts with
adaptability: every operating mode is lexible enough to meet the needs of novices and
experts alike. To accelerate your work, each mode has a task-driven interface that saves
time in the ield. Best of all, FieldFox is designed to withstand your toughest working
conditions.
Step up to FieldFox – and achieve more in the ield.
03 | Keysight | FieldFox RF Analyzer - Technical Overview
World’s Most Integrated Handheld RF Analyzer
Key measurements
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Cable and antenna test, distance-to-fault, return loss, cable loss
Vector network analysis with Smith chart display and time domain
Vector voltmeter
Spectrum analyzer, CHP, ACPR, OBW
Interference analyzer, spectrogram, waterfall, record and playback
Independent source, CW and tracking
Power meter (USB), channel power meter (built-in), and pulse
measurements
Key differentiators
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–
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Integrated QuickCal calibrates without a calibration kit
Immediate measurements with CalReady
50 percent faster than traditional
handheld instruments
Superior dynamic range (96 dB) and sensitivity (-148 dBm) in the spectrum
analysis mode
Cable and antenna analyzer
Vector network analyzer
2 MHz to 4/6 GHz
Spectrum analyzer
100 kHz* to 4/6 GHz
*Useable to 5 kHz
Signal source
2 MHz to 4/6 GHz
04 | Keysight | FieldFox RF Analyzer - Technical Overview
Pick up FieldFox for its ergonomics
7.4” W
188 mm
Connector covers
help keep dust out
Anti-glare 6.5 inch
LCD display with
LED backlight
Convenient side
strap makes it
easy to hold
and carry
11.5” H
292 mm
Task-driven keys
are grouped to
easily and
naturally perform
standard ield
measurements
Portrait design and
large buttons for
easy operation —
even with gloves on
Dedicated marker keys for quick
marker function access
Backlit keypad
05 | Keysight | FieldFox RF Analyzer - Technical Overview
…and depend on its durability and convenience
2.8” D
72 mm
RF Out
External reference
and external trigger
Connector bay protects
RF connectors
Easily accessible
battery compartment
RF In
Spacious connector design makes
connections fast and simple
LAN port for data transfer,
SCPI programming and
remote control from iPad
SD lash card slot for
additional data storage
Quick-connect
shoulder strap clips
Simplify interference
analysis with AM/FM
tune and listen
USB ports for data transfer, GPS
receiver, and USB power sensors
Gasketed doors protect
ports from moisture
06 | Keysight | FieldFox RF Analyzer - Technical Overview
Key Measurements
Cable and antenna analyzer
Fifty to sixty percent of cell site
problems are caused by faulty cables,
connectors, and antennas. Degraded
feed lines cause poor coverage, unnecessary handovers, paging failures,
and access failures on uplink. To avoid
service quality problems, it is critical
to keep cell sites’ cable and antenna
systems in good condition.
Use FieldFox to make return loss,
VSWR, insertion loss/transmission,
one-port cable loss, and distance-tofault (DTF) measurements. You can test
antennas, cables, ilters, and ampliiers with a single instrument.
Insertion loss display
View and control the
RL and DTF displays
independently
Return loss and DTF
measurements
FieldFox can make both return loss
and distance-to-fault measurements
at the same time. This helps you
correlate overall system degradation
with speciic faults in the cable and
antenna system.
The built-in cable editor allows you to
edit existing cable types on-site, and
save them as new cable types with
user deined names.
07 | Keysight | FieldFox RF Analyzer - Technical Overview
Measurements in the ield without the need to manually calibrate
Each instrument is CalReady at the RF Out
port, immediately following power-on or
preset. This means it’s already calibrated
and ready to make measurements such as
one-port cable loss, VSWR, return loss,
and DTF measurements at the test port.
Industry’s irst and only
QuickCal
The industry’s irst and only built-in calibration system allows you to calibrate the
cable/antenna tester without carrying a
calibration kit into the ield. As with any
test instrument, when you add an additional device to the test port, such as a
jumper cable or attenuator, you need to
calibrate using a calibration kit (cal kit).
QuickCal eliminates the hassle of carrying
and using a cal kit, plus provides worryfree accuracy every time.
Broadband calibration
FieldFox allows you to make broadband
calibrations, which means the instrument
is calibrated over the maximum frequency
span. After a broadband calibration,
you can change the frequency range or
number of points without recalibrating the
instrument.
Calibration Wizard
08 | Keysight | FieldFox RF Analyzer - Technical Overview
Built-in spectrum analyzer
Interference is a major source of cell site problems. Interference can be internal or
external, and uplink or downlink. Downlink interference reduces coverage, while uplink
interference causes access failure. Interference has a direct impact on the quality of
service of wireless communication services.
FieldFox has an optional built-in spectrum analyzer that covers frequency ranges from
5 kHz to 6 GHz. It provides a fast spectrum scan to detect interference and RF burst
capture to measure intermittent signals. It displays four traces at the same time, and you
can choose different detector modes.
Field strength measurements
RF spectrum monitoring aided by spectrogram
recording
Field strength characterization is a common test performed by operators in the ield. To
make accurate measurements, the gain and loss of the antenna and cables need to be
accounted for. With FieldFox, antenna factors and cable loss data can be loaded using
either the front panel or the Data Link software.
Interference analyzer
FieldFox interference analyzer is designed for identifying interference signals quickly in
the ield. It has the best dynamic range on the market (96 dB) with very fast sweep times
under narrow resolution bandwidths (RBWs).
FieldFox provides a spectrogram and waterfall display to detect intermittent interference
signals or monitor signals of interest for longer periods of time. Signal traces can be
recorded into internal memory or external lash memory devices, the saved traces can
be played back for ofline processing.
FieldFox also allows you to listen to demodulated AM/FM signals to identify signal types.
Select one of the pre-loaded radio frequency standards, or create your
own custom standard
Use the spectrum analyzer’s audio signal strength indicator
to locate signals when walking around
09 | Keysight | FieldFox RF Analyzer - Technical Overview
Independent signal source and tracking generator
FieldFox has a built-in independent signal source, with a frequency range of 2 MHz to 4/6
GHz. The signal source and spectrum analyzer can be on at the same time. The signal
source can be tuned to any frequency, independent of the spectrum analyzer frequency.
The signal source can be used to create a test signal to measure coverage, antenna isolation, antenna direction alignment, frequency offset device veriication, and long cable
loss measurement.
FieldFox’s source can generate both a CW signal and a swept frequency signal, similar
to a traditional tracking generator. This feature is standard on FieldFox RF analyzers with
spectrum analyzer Options 230 or 231.
FieldFox’s independent CW signal source,
coupled, viewed in “Night Vision” display mode
Channel power meter
With Option 311, FieldFox is able to make channel power measurements (CPMs) easily,
without the need for an external USB power sensor. Users can set the center frequency
directly or select from a list of pre-deined radio standards such as GSM or LTE. Additionally, with CPM, the channel bandwidth can be controlled, thereby reducing errors
caused by out-of-band signals.
Limit lines simplify testing
Limit lines or masks can be used for quick pass/fail testing of devices or frequency
spectrums. FieldFox allows you to deine ixed and relative limit lines, for both the RF
spectrum traces and S-parameters. Additionally, with a single key press, you can build
a limit line table from a current trace, and add offsets or margins to simplify your testing
process.
Channel power measurements are easily displayed on a large analog
display, viewed in “Outdoor Sun” display mode
Use limit lines or masks to perform spectrum conformance tests
10 | Keysight | FieldFox RF Analyzer - Technical Overview
Network analyzer time domain
With the time domain Option, FieldFox computes the inverse Fourier transform of the
frequency-domain data to display relection or transmission coeficients versus time.
Time domain gating can be used to remove unwanted responses such as connector
mismatch or cable discontinuities, and the results can be displayed in either time or
frequency domain. FieldFox’s time domain function supports both low pass mode and
band pass mode, enabling users to measure both broadband and frequency-selective
devices.
Network analysis
S11, S11 phase, Smith chart and polar display are available with Option 303 (Network
analysis capability). To obtain S21or insertion loss/gain, users need to order Option 110
(transmission measurement), in addition to Option 303.
For in-ixture measurements, use FieldFox’s port extension or electrical delay capability
to easily extend the reference plane to the device interface to provide accurate measurements. You can use the electrical delay capability to measure deviation from linear
phase by removing the linear portion of the phase delay.
If you need to measure the magnitude and phase of all four S-parameters, consider the
N9923A FieldFox RF VNA. Please refer to Keysight FieldFox RF Vector Network Analyzer,
literature part number 5990-5087EN.
Use time domain gating to remove unwanted responses. Before gating: Traces 1
and 3, After gating: Traces 2 and 4.
Device input impedance displayed on a Smith chart
The marker bandwidth/Q factor function simpliies ilter testing and tuning.
11 | Keysight | FieldFox RF Analyzer - Technical Overview
Power meter with USB power sensor
FieldFox can connect with the Keysight USB power sensors to make average power measurements up to 40 GHz. Using USB peak power sensors, users can measure both the
average and the peak power of a modulated signal.
Pulse measurements
FieldFox’s pulse measurement option allows users to eficiently characterize pulsed-RF
signals such as those used in radar and electronic warfare systems, leveraging Keysight’s
USB peak power sensors (available in 18 and 40 GHz models). Measurements include
peak power, peak to average ratio, and pulse proiling.
Pulse measurement
Transmission measurement
FieldFox provides a 2-port transmission measurement that measures insertion loss, ampliier gain, ilter passband, and loss. It also makes a S21 scalar measurement if Option
303 is enabled.
Transmission measurement
Vector voltmeter
Using FieldFox’s vector voltmeter (VVM), the phase shift and electrical length of a device
can be measured.
By utilizing the “Zero” function, the phase and electrical length of one device can be
measured relative to a “golden device”. View results on the large display which can be
seen as far as ten feet away.
VVM applications:
- Cable trimming of phase matched cables
- Verifying the isolation of 2-port components
- Radio navigation – VHF omnidirectional radio
range (VOR) and instrumentation landing
system (ILS)
FieldFox offers much of the VVM functionality of the popular Keysight 8508A, in a
handheld portable form factor, and without the need for the source/bridge/accessories
required with the 8508A.
12 | Keysight | FieldFox RF Analyzer - Technical Overview
Feature and Beneit Summary
Comprehensive measurement capabilities
Cable and antenna test
– Return loss, VSWR
– Distance-to-fault
Return loss/VSWR measurements allow you to evaluate the impedance
matching performance of the feed line across the frequency range of
interest.
Distance-to-fault measurements help you identify the faults along a feed
line. Use these measurements to precisely pinpoint the location of damaged or degraded antennas, connectors, ampliiers, ilters, and duplexers,
etc.
FieldFox provides up to 1001 data-point resolution to help accurately
locate faults and extend measurement distance.
Perform and view return loss and distance-tofault measurements at the same time
Locate interference signals
Waterfall display
Transmission test
– Cable loss
– Insertion loss
– Ampliier gain
Transmission test is used to accurately measure cable loss, insertion loss
(ilters), and ampliier gain (tower mounted ampliier). FieldFox offers twoport transmission magnitude measurements with up to 72 dB dynamic
range.
One-port cable loss
For already-installed cables, FieldFox accurately measures cable loss via
the RF Out port. The instrument measures actual cable loss, without the
need for additional computation.
CalReady at test port
Each instrument is calibrated at the RF Out port. When you power up the
instrument, it is ready to make measurements such as one-port cable
loss, VSWR, return loss, and DTF at the test port.
QuickCal
The industry’s-irst and only built-in calibration system allows you to
calibrate the cable and antenna tester without carrying a calibration
kit with you all the time. It provides worry-free accuracy and excellent
repeatability.
Mechanical
calibration
Open-short-load (OSL) is standard in FieldFox. There are four calibration
kits deined in the instrument.
Spectrum analysis
The built-in spectrum analyzer allows you to scan up to 6 GHz and detect
internal and external interference. FieldFox can detect signals as low as
-148 dBm up to 6 GHz, with phase noise of -88 dBc at 10 kHz, and a third
order intercept (TOI) better than +18 dBm.
Limit lines
Use limit lines or masks for pass/fail testing. You can set up both ixed
and relative limit lines, or build a limit line table from a current trace.
Interference analyzer
Spectrogram and waterfall displays allow you to detect and monitor
intermittent interference signals. The interested signals can be recorded
and played back.
Field strength
measurements
Antenna factors and cable loss data can be loaded using either the front
panel or the Data Link software. Field strength can be
displayed in dBuV/m, dBuA/m, dBG or dBpT.
GPS
Enables operators to ind exact locations and time/location stamp their
measurement reports. The GPS information can be displayed on the
screen and saved as part of the image, data or recorded signal.
13 | Keysight | FieldFox RF Analyzer - Technical Overview
Comprehensive measurement capabilities (continued)
Independent signal
source
Provides a test signal to measure coverage, antenna isolation, long cable loss,
frequency offset, and align antenna direction.
Power suite
measurements
Built-in spectrum analyzer provides one-button power suite measurements
such as; channel power, ACPR and OBW for LTE, WiMAX, WCDMA, TD-SCDMA,
cdma2000 and GSM measurements.
Custom radio
standards
Use one of the pre-loaded radio standards such as GSM 1900 or WCDMA
850, or create your own custom radio standard using a csv ile.
AM/FM tune and
listen
The built-in spectrum analyzer can demodulate AM/FM modulated signals
and play the audio via speaker or headset. This feature is very useful to
identify types of signals.
Channel power meter
Channel power meter measurements provide absolute power measurements over a deined frequency bandwidth, without the need for an external
power sensor.
Power meter
Makes accurate true average power measurements without bringing a
power meter along. The state-of-the-art Keysight USB power sensors
provide measurements up to 24 GHz.
Pulse characterization
Using USB peak sensors and FieldFox, you can measure peak power, peak
to average ratio, and pulse proile parameters such as rise time, fall time
and pulse repetition frequency.
Smith chart
Smith charts can be used to display impedance matching characteristics in
cable and antenna systems.
Vector voltmeter
The large vector voltmeter display makes it easy to match two or more
device’s electric length and ensure signals that travel on different devices
have the same delay.
Electrical delay
Using the electrical delay function, you can remove the linear portion of the
phase shift and view the deviation from linear phase.
Port extension
Allows you to extend the reference plan after calibration. This feature is
useful for measurements such as in-ixture test, where calibrating at the
DUT or reference plane is cumbersome.
Network analyzer time
domain
Using the time domain feature, you can display relection or transmission coeficients versus time. Time domain gating can be used to remove
unwanted responses such as connector mismatch or cable discontinuities.
Channel power measurement
Make accurate true average power measurements without bringing along a power meter
Keysight’s FieldFox pulse measurements simplify
radar ield testing.
14 | Keysight | FieldFox RF Analyzer - Technical Overview
Field-proof usability
Translective display and
backlit keys
Task-driven key design
Translective display makes it easy to read measurements in direct sunlight
The display is designed for easy viewing in indoor and outdoor settings
and in direct sunlight and darkness. Access different display modes via
softkeys.
Front-panel keys are grouped to easily and naturally perform standard
ield measurements.
Speaker and
headphone jack
Used for demodulated audio signal capability.
One-button
measurement
Provides task-driven user interface to simplify the measurements.
Rugged design
Water-resistant chassis,
keypad and case design
The case is made from polycarbonates that withstand wide temperature ranges and salty, humid environments.
RF connector
protection
A specially designed connector bay protects the RF connectors from
damage during drops or other external impacts.
Dust-free design
With no vents or fans in the case, FieldFox resists dust for better
equipment reliability.
Meets tough environmental standard
Meets MIL-PRF-28800F Class 2 speciication.
Gasketed doors
Protects instrument interface from moisture.
Modern connectivity
Water resistant chassis withstands wide temperature ranges and humid environments
USB 2.0 ports
Two USB 2.0 ports; can be used for data transfer, GPS receiver and
USB power sensor support.
LAN port
Used for SCPI programming, Data Link connection, and remote control
via iOS device.
SD lash card slot
Use as a data storage device.
FieldFox Data Link software
Transfer data remotely from the instrument to a PC for backofice applications such as baseline analysis and report generation.
Remote control
capability
Remotely monitor and control FieldFox using an iOS device such as
iPad or iPhone, via a LAN network connection.
15 | Keysight | FieldFox RF Analyzer - Technical Overview
Speciications
A condensed version of the speciications is provided here. See the User’s Guide for the complete version;
http://cp.literature.cdn.keysight.com/litweb/pdf/N9912-90001.pdf
Speciication (spec.):
Typical (typ.):
Warranted performance. Speciications 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 at least 10 minutes
(unless otherwise stated)
– FieldFox is within its calibration cycle
– Storage or operation at 25 ±5 °C range
(unless otherwise stated)
Expected performance of an average unit over a 20 °C to 30 °C
temperature range, unless otherwise indicated; 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.
Cable and antenna analyzer (Option 104 or 106)
Frequency
Frequency range
Option 104
2 MHz1 to 4 GHz
Option 106
2 MHz2 to 6 GHz
Frequency reference
Accuracy
±2 ppm
Aging rate
±1 ppm/yr
Temperature stability
±1 ppm over -10 to 55 ºC
Frequency resolution
2 MHz to 1.6 GHz
2.5 kHz
> 1.6 GHz to 3.2 GHz
5 kHz
> 3.2 GHz to 6 GHz
10 kHz
Measurement speed
Return loss
1.5 ms/point (nominal)
1.75 GHz to 3.85 GHz, 1001 points, Cal ON
Distance-to-fault
2.4 ms/point (nominal)
0 to 500 ft, 601 points, Cal ON
Data points
101, 201, 401, 601, 801, 1001 (up to 10,001 using SCPI)
Directivity
Corrected
> 42 dB
QuickCal (Option 111)
> 42 dB (typical)3
Source match
Corrected
> 36 dB
QuickCal (Option 111)
≥ 35 dB (typical) 3
Relection tracking
Corrected
± 0.06 dB
QuickCal (Option 111)
± 0.15 dB (typical) 3
1. Spectrum analyzer (Option 230) start frequency is 100 kHz, usable to 5 kHz.
2. Spectrum analyzer (Option 231) start frequency is 100 kHz, usable to 5 kHz.
3. Requires 90 minute warm up.
16 | Keysight | FieldFox RF Analyzer - Technical Overview
Dynamic range
Relection (RF Out port)
2 MHz to 4 GHz
60 dB (typical)
> 4 GHz to 6 GHz
55 dB (typical)
Transmission measurement (Option 110)
2 MHz to 2 GHz
72 dB (typical)
> 2 GHz to 3 GHz
67 dB (typical)
> 3 GHz to 5 GHz
58 dB (typical)
> 5 GHz to 6 GHz
49 dB (typical)
Output power range
High power
2 MHz to 4 GHz
< +8 dBm, +6 dBm (nominal)
> 4 GHz to 6 GHz
< +7 dBm, +2 dBm (nominal)
Low power
2 MHz to 4 GHz
< -23 dBm, -25 dBm (nominal)
> 4 GHz to 6 GHz
< -24 dBm, -29 dBm (nominal)
Immunity to interference
+16 dBm (nominal)
Maximum input level (RF Out port)
+23 dBm
Maximum input DC voltage (RF Out port)
±50 VDC
17 | Keysight | FieldFox RF Analyzer - Technical Overview
Cable and antenna measurements
Return loss
Display range
0 to 100 dB
Resolution
0.01 dB
VSWR
Display range
0 to 100
Resolution
0.01
Distance to fault (DTF)
Range = (number of points - 1)/ (span*2) x Vf (velocity factor in cable) x c (light speed)
Resolution = range/(number of points - 1)
Number of points: 101, 201, 401, 601, 801, 1601, 4001, 10,001 (custom number of points
can be set using SCPI)
Distance-to-fault display: return loss, VSWR, relection coeficient
Cable loss (1-port)
Terminated cable under test with short
Insertion loss (2-ports)
Requires Option 110
Transmission measurement (Option 110)
Frequency range
Option 104
2 MHz to 4 GHz
Option 106
2 MHz to 6 GHz
Dynamic range
2 MHz to 2 GHz
72 dB (typical)
2 GHz to 3 GHz
67 dB (typical)
> 3 GHz to 5 GHz
58 dB (typical)
> 5 GHz to 6 GHz
49 dB (typical)
18 | Keysight | FieldFox RF Analyzer - Technical Overview
Network analysis (Option 303)
S11
Vector measurement, S11 magnitude and S11 phase. Speciication is listed under Cable
and antenna analyzer section (S11/Return loss).
S21
Scalar measurement, S21 magnitude. Speciication is listed under transmission measurement. S21 requires Option 110 transmission measurement.
A
Relected power
R
Source power
Display
Log, linear, phase, VSWR, Smith chart, polar, group delay, unwrapped phase
Calibration types
Mechanical cal
QuickCal
Normalization
IF bandwidth selections
300 Hz, 1 kHz, 3 kHz, 10 kHz and 30 kHz
Data points
101, 201, 401, 601, 801, 1001, 1601, 4001, 10,001 (custom number of points can be set using SCPI)
Vector network analyzer time domain (Option 010)
Using time domain, data from transmission or relection measurements in the frequency domain are converted to the time
domain. The time-domain response shows the measured parameter value versus time.
Time stimulus modes
Low-pass step
This stimulus, similar to a traditional time domain relectometer (TDR) stimulus waveform,
is used to measure low-pass devices. The frequency-domain data should extend from DC
(extrapolated value) to a higher value.
Low-pass impulse
This stimulus is also used to measure low-pass devices.
Bandpass impulse
The bandpass impulse stimulates a pulsed RF signal and is used to measure the timedomain response of band-limited devices.
Windows
The windowing function can be used to ilter the frequency-domain data and thereby reduce overshoot and ringing in the time-domain
response.
Gating
The gating function can be used to selectively remove relection or transmission time-domain responses. In converting back to the frequency domain the effects of the responses outside the gate are removed.
19 | Keysight | FieldFox RF Analyzer - Technical Overview
Spectrum analyzer (Option 230 or 231)
Frequency
Frequency range
Option 104
100 kHz to 4 GHz, usable to 5 kHz
Option 106
100 kHz to 6 GHz, usable to 5 kHz, tunable to 6.1 GHz
Frequency reference
Accuracy
±2 ppm
Frequency aging
±1 ppm/yr
Frequency reference
Temperature stability
±1 ppm over -10 to 55 °C
Frequency readout accuracy
± (readout frequency x frequency reference accuracy + RBW centering + 0.5 x horizontal resolution)
Frequency span
Range
0 Hz (zero span), 10 Hz to maximum frequency
Span accuracy
±(2 x RBW centering + horizontal resolution)
Span resolution
1 Hz
Resolution bandwidth (RBW)
Range (-3 dB bandwidth)
Zero span
300 Hz to 1 MHz in 1-3-10 sequence; 2 MHz
Non-zero span
10 Hz to 300 kHz in 1/1.5/2/3/5/7.5/10 sequence; 1 MHz, 2 MHz
Accuracy
1 kHz to 1 MHz: ±5% (nominal)
10 Hz to 100 KHz non-zero span: ±1% (nominal)
2 MHz: ±10% (nominal)
300 Hz zero span: ±10% (nominal)
Selectivity (-60 dB/ -3 dB)
4:1 (nominal)
Video bandwidth (VBW)
Range
1 Hz to 2 MHz in 1/1.5/2/3/5/7.5/10 sequence
Stability
Noise sidebands, CF = 1 GHz
10 kHz offset: -88 dBc/Hz ( typical)
30 kHz offset: -89 dBc/Hz, (typical)
100 kHz offset:
1 MHz offset: -115 dBc/Hz, (typical)
Sweep acquisition, span > 0 Hz
Range
1 to 5000, number of data acquisitions per trace point; value is normalized to the minimum
required to achieve amplitude accuracy with CW signals
Resolution
1
Readout
Measured value representing time required to tune
Trace updates
Span = 20 MHz, RBW = 3 kHz: 1.5 updates/second
Span = 100 MHz, RBW auto coupled: 7 updates/second
Span = 6 GHz, RBW auto coupled: 1 update/second
Trace points
101, 201, 401, 601, 801, 1001 points, default is 401
20 | Keysight | FieldFox RF Analyzer - Technical Overview
Amplitude
Measurement range
Displayed average noise level (DANL) to +20 dBm
Input attenuator range
0 to 31 dB, 1 dB steps
Maximum DC voltage at RF In port
±50 VDC
Maximum input power at RF In port
+27 dBm (0.5 W)
Displayed average noise level (DANL)
10 Hz RBW, 10 Hz VBW, 50 ohm termination input, 0 dB attenuation, average detector
Preampliier OFF
20 to 30 °C
10 MHz to 2.4 GHz
-130 dBm (typical)
> 2.4 GHz to 5.0 GHz
-125 dBm (typical)
> 5.0 GHz to 6.0 GHz
-119 dBm (typical)
Preampliier ON (Option 235)
20 to 30 °C
10 MHz to 2.4 GHz
-148 dBm (typical)
> 2.4 GHz to 5.0 GHz
-145 dBm (typical)
> 5.0 GHz to 6.0 GHz
-138 dBm (typical)
-10 to 55 °C
10 MHz to 2.4 GHz
< -141 dBm
> 2.4 GHz to 5 GHz
< -138 dBm
> 5 GHz to 6 GHz
Total absolute amplitude accuracy
< -130 dBm
1
Peak detector, 10 dB attenuation, preampliier off, RBW < 2 MHz, input signal 0 dBm to -50 dBm, all settings auto-coupled
20 to 30 ºC
2 MHz to 10 MHz
±1.8 dB
±0.60 dB (typical)
> 10 MHz to 3.0 GHz
±1.5 dB
±0.50 dB (typical)
> 3.0 GHz to 5.0 GHz
±1.9 dB
±0.60 dB (typical)
> 5.0 GHz to 6.0 GHz
±2.1 dB
±0.60 dB (typical)
Second harmonic distortion (SHI)
-30 dBm signal at input mixer
2 MHz to 1.35 GHz
< -70 dBc, +40 dBm SHI (nominal)
1.35 GHz to 3.0 GHz
< -80 dBc, +50 dBm SHI (nominal)
1.
Requires 90 minute warm up
21 | Keysight | FieldFox RF Analyzer - Technical Overview
Third order intermodulation distortion (TOI)
Two -30 dBm tones at input mixer, > 100 kHz tone separation
< -96 dBc, +18 dBm TOI (nominal)
Residual responses
Input terminated, 0 dB attenuation, preampliier off, RBW ≤ 1 kHz, VBW auto-coupled
20 MHz to 3 GHz
-90 dBm (nominal)
> 3 GHz to 6 GHz
-85 dBm (nominal)
Spurious responses
Input mixer level -30 dBm
RFsig = RFtune + 417 MHz
-70 dBc (nominal)
RFsig = RFtune + 1.716 GHz
-80 dBc (nominal)
Input mixer level -10 dBm, irst IF image response
RFsig = RFtune – 2 x 0.8346 GHz,
for RFtune 5.7 to 6.0 GHz
-50 dBc (nominal)
Sidebands
-80 dBc (nominal)
-60 dBc (nominal) when battery charging, 260 kHz offset
Preampliier (Option 235 requires Option 230 or 231)
Option 230
100 kHz to 4 GHz
Option 231
100 kHz to 6 GHz
Gain
22 dB (nominal)
Reference level
Range
-170 dBm to +30 dBm
Resolution
0.1 dB
Accuracy
0 dB (no error)
Traces
4 traces, data/max/average/min
Detectors
Normal, positive peak, negative peak, sample, average
Markers
Marker types
Normal, noise marker, band/interval marker, frequency counter marker
Number of markers or delta markers
6
Marker functions
Peak, next peak, peak left, peak right, marker to center, minimum search
RF In VSWR
1.5:1 (50 ohm)
Trigger
22 | Keysight | FieldFox RF Analyzer - Technical Overview
Independent signal source or tracking generator
The independent source or tracking generator is included with either spectrum analyzer option 230 or 231. The source
can be used in continuous wave (CW) or stimulus/response (S/R) mode. In CW mode, the source frequency is independent of the receiver frequency. The source can be tuned to a frequency that is different from the receiver. In stimulus/
response mode, the source operates the same as a traditional tracking generator - the receiver tracks the source.
Frequency range
2 MHz to 4 GHz (Option 230) or 2 MHz to 6 GHz (Option 231)
Amplitude
High power
2 MHz to 4 GHz < +8 dBm, +6 dBm (nominal)
>4 GHz to 6 GHz <+7 dBm, +2 dBm (nominal)
Low power
2 MHz to 4 GHz <-23 dBm, -25 dBm (nominal)
>4 GHz to 6 GHz < -24 dBm, -29 dBm (nominal)
Attenuation
0 to 31 dB
Functions
Continuous wave, stimulus / response
External, video trigger, FFT gating with video (IF envelope) trigger
Channel power meter (Option 311)
Channel power meter is a built-in power measurement that does not require an external power sensor. Users can set the
center frequency and channel bandwidth. The results are shown on a large analog display.
Frequency range
100 kHz to 4/6 GHz
Power accuracy1
Frequency range
Spec
Typical
2 MHz to 10 MHz
±1.8 dB
±0.60 dB
> 10 MHz to 3.0 GHz
±1.5 dB
±0.50 dB
> 3.0 GHz to 5.0 GHz
±1.9 dB
±0.60 dB
> 5.0 GHz to 6.0 GHz
±2.1 dB
±0.60 dB
Power meter measurement with USB sensor (Option 302)
Support for Keysight USB average and peak power sensors. Frequency and power range dependent on sensor.
List of supported sensors: www.keysight.com/ind/usbsensorsforieldfox.
Pulse measurements with USB peak power sensor (Option 330)
FieldFox’s pulse measurement option can be used to characterize RF pulses such as those used in radar and electronic
warfare systems. Measurements are made using FieldFox and Keysight’s UBS peak power sensors.
Performance speciications such as frequency, dynamic range and minimum pulse width depend on the peak power sensor. Supported peak power sensors: www.keysight.com/ind/usbsensorsforieldfox.
Remote control capability with iPad or iPhone (Option 030)
Users can now remotely monitor and control their FieldFox using their iOS device such as an iPad, iPhone, or iPod Touch.
FieldFox’s Remote Viewer iOS app emulates the front panel of the unit, so users can simply press any FieldFox key right
from their iOS device, including the hardkeys or softkeys.
With this technology, FieldFox can now be placed in areas where users do not wish to stay long due to extremely harsh
or unsafe conditions. Additionally, if one technician or engineer has trouble making a measurement or determining the
source of a problem, another can step in to remotely troubleshoot and solve the problem, which helps minimize rework
and multiple trips.
1. Speciication requires 90 minute warm-up
23 | Keysight | FieldFox RF Analyzer - Technical Overview
When the application is launched, users can access the FieldFox demo videos and technical literature such as user
guides, application notes, and datasheets. Accessing this information via the FieldFox app helps engineers and technicians in the ield quickly ind the data they need to resolve issues as they arise. Such capabilities also make the app ideal
for training and educational purposes.
The iOS device and FieldFox communicate via a WLAN or broadband data connection. Without Option 030, users can
remotely view the live display screen of their FieldFox, but cannot control the instrument.
General speciications
Connector type
Type-N (female)
Input impedance
50 ohm
External reference
Input type
BNC female
Reference frequency
10 MHz
Required level
-5 dBm to 10 dBm
Display
6.5” translective, color VGA LED backlit 640 x 480 with anti-glare coating
Speaker
Built-in speaker
Headphone jack
Built-in headphone jack
Connectivity
2 x USB 2.0; 1 x mini USB; 1 x LAN
GPS
Latitude, longitude, elevation and accurate time are provided. The GPS information can be displayed on the screen, and saved as part of
the image, data, or recording ile. The GPS capability is standard with all N9912A FieldFox RF analyzers. An external USB GPS receiver is
required. Keysight recommends the Microsoft Streets & Trips, or Microsoft AutoRoute with GPS locator.
Internal storage
Minimum 16 MB, up to 1000 traces
External storage
1 x micro SD slot and 2 x USB 2.0
EMC
Complies with European EMC Directive 2004/108/EC
– IEC/EN 61326-2-1)
– CISPR Pub 11 Group 1, Class A
– AS/NZS CISPR 11
– ICES/NMB-001
ESD
– IEC/EN 61000-4-2, functional up to 20 kV test
Safety
Complies with European Low Voltage Directive 2006/95/EC
• IEC/EN 61010-1 2nd Edition
• Canada: CSA C22.2 No. 61010-1-04
• USA: UL 61010-1 2nd Edition
24 | Keysight | FieldFox RF Analyzer - Technical Overview
General speciications continued
Environmental
Meets MIL-PRF-28800F Class 2 speciication
Humidity
95% at 40 °C
Temperature
Operating
-10 ºC to +55 ºC
Non-operating
-51 ºC to 71 ºC
Weight
6.2 lbs / 2.8 kg including battery
Dimensions (H x W x D)
11.5” x 7.4” x 2.8” (292 x 188 x 72 mm)
Power
Power supply
External DC input: 15 to 19 VDC
External AC power adapter
Input
100 to 250 VAC, 50 to 60 Hz; 1.25 to 0.56 A
Output
15 VDC, 4 A
Power consumption
12 W
Battery
6 cell Lithium Ion, 10.8 V, 4.6 A-h
Battery operating time
4 hours
Languages
English, Chinese, French, Spanish, Japanese, Russian, German, Italian, and Turkish
25 | Keysight | FieldFox RF Analyzer - Technical Overview
Coniguration Information
N9912A FieldFox RF analyzer
FieldFox RF Analyzer base functions:
One port cable and antenna analyzer (4 GHz), broadband calibration, CalReady, standard
mechanical cal kit support. Measurements include: return loss, distance-to-fault (DTF),
one port cable loss and VSWR.
Standard accessories included N9912A:
AC/DC adapter; battery; soft carrying case comes with backpack and shoulder straps;
Quick Reference Guide; User’s Guide
N9912A FieldFox Options
Option 104
4 GHz cable and antenna analyzer
Option 106
6 GHz cable and antenna analyzer
Qption 110
Transmission measurement
Option 111
QuickCal
Option 230
4 GHz spectrum analyzer (requires Option 104)
Option 231
6 GHz spectrum analyzer (requires Option 106)
Option 235
Preampliier for spectrum analyzer (requires Option 230 or 231)
Option 236
Interference analyzer
Option 302
External USB power sensor support
Option 303
Network analysis capability
Option 308
Vector voltmeter
Option 010
Network analyzer time domain
Option 311
Channel power meter
Option 030
Remote control capability (from iOS device)
Option 330
Pulse measurements (requires USB peak power sensor)
N9912A upgrades
The following upgrades are available for the N9912A FieldFox RF Analyzer. More information regarding upgrades is available at:
www.keysight.com/find/fieldfoxsupport
Product number before upgrade
N9912AU-110
Description
Required Options before upgrade
Add transmission measurement capability
None
Allows use of second port in NA and CAT
modes.
N9912AU-111
Add QuickCal
None
N9912AU-230
Add 4 GHz spectrum analyzer
4 GHz unit only, Option 104
Add 6 GHz spectrum analyzer
6 GHz unit only, Option 106
May only be installed on 4 GHz instrument.
N9912AU-231
May only be installed on 6 GHz instrument.
N9912AU-235
Add preampliier to spectrum analyzer
Spectrum analyzer Option, 230 or 231
N9912AU-236
Add interference analyzer
Spectrum analyzer Option, 230 or 231
N9912AU-302
Add external USB power sensor support
None
N9912AU-303
Add network analyzer capability; one port
only
None
For second port, add Option 110.
N9912AU-308
Vector voltmeter
None
N9912AU-010
Add network analyzer time domain
Network analyzer Option 303
N9912AU-311
Add channel power meter
None
N9912AU-030
Add remote control capability
None
N9912AU-330
Add pulse measurements (requires USB peak
power sensor)
None
26 | Keysight | FieldFox RF Analyzer - Technical Overview
Coniguration Information continued
N9910X RF/MW handheld analyzer accessories
N9910X-800
T-calibration kit, DC to 6 GHz, Type-N (m)
N9910X-801
T-calibration kit, DC to 6 GHz, Type-N (f)
N9910X-802
T-calibration kit, DC to 6 GHz, 7/16 DIN (m)
N9910X-803
T-calibration kit, DC to 6 GHz, 7/16 DIN (f)
85514A
4-in-1 OSLT mechanical calibration kit, DC to 9 GHz, Type-N (m), 50 ohm
85515A
4-in-1 OSLT mechanical calibration kit, DC to 9 GHz, Type-N (f), 50 ohm
N9910X-810
Rugged phase-stable cable, Type-N (m) to Type-N (m), 5 ft
N9910X-811
Rugged phase-stable cable, Type-N (m) to Type-N (f), 5 ft
N9910X-812
Rugged phase-stable cable, Type-N (m) to Type-N (m), 12 ft
N9910X-813
Rugged phase-stable cable, Type-N (m) to Type-N (f), 12 ft
N9910X-814
Rugged phase-stable cable, Type-N (m) to 7/16 (m), 5 ft
N9910X-815
Rugged phase-stable cable, Type-N (m) to 7/16 (m), 12 ft
N9910X-816
Rugged phase-stable cable, Type-N (m) to Type-N (f), 3.28 ft
N9910X-817
Rugged phase-stable cable, Type-N (m) to Type-N (m), 3.28 ft
N9910X-820
Antenna, directional, multiband, 800 to 2500 MHz, 10 dBi
N9910X-821
Antenna, telescopic whip, 70 MHz to 1 GHz
N9910X-843
Coaxial adapter, Type-N (m) to 7/16 DIN (f)
N9910X-845
Adapter kit: Type-N (f) to 7/16 DIN (f), Type-N (f) to 7/16 DIN (m), Type-N (f) to Type-N (f)
N9910X-846
Coaxial adapter, Type-N (m) 50 ohm to Type-N (f) 75 ohm (Recommend quantity 2 for
75 ohm measurements)
N9910X-860
Fixed attenuator, 40 dB, 100 W, DC to 3 GHz, Type-N (m) to Type-N (f)
N9910X-861
Fixed attenuator, 40 dB, 50 W, DC to 8.5 GHz, Type-N (m) to Type-N (f)
N9910X-870
Extra battery
N9910X-872
External battery charger
N9910X-873
AC/DC adapter
N9910X-874
External bias-tee, 2.5 MHz to 6 GHz, 1 W, 0.5 A
N9910X-875
DC car charger and adapter
N9910X-880
Extra soft carrying case with backpack and shoulder strap
N9910X-881
Hard transit case
For more information go to: www.keysight.com/ind/ieldfox
27 | Keysight | FieldFox RF Analyzer - Technical Overview
Coniguration Information continued
Antenna, N9910X-821
Directional antenna, N9910X-820
Bias-tees, N9910X-874
Phase stable cable, N9910X-810
100 Watt attenuator, N9910X-860
85514A
85515A
DC car charger and adapter,
N9910X-875
Adapter kit, N9910X-845
T-Cal kits
N9910X-800
N9910X-801
N9910X-802
N9910X-803
28 | Keysight | FieldFox RF Analyzer - Technical Overview
Soft carrying case with backpack and shoulder straps
included with a standard N9912A. For an extra soft
carrying case order N9910X-880
Hard transit case, N9910X-881
AC/DC adapter,
N9910X-873
FieldFox its inside hard transit case
External battery charger,
N9910X-872
29 | Keysight | FieldFox RF Analyzer - Technical Overview
myKeysight
www.keysight.com/find/mykeysight
A personalized view into the information most relevant to you.
Three-Year Warranty
www.keysight.com/find/ThreeYearWarranty
Keysight’s commitment to superior product quality and lower total cost
of ownership. The only test and measurement company with three-year
warranty standard on all instruments, worldwide.
Keysight Assurance Plans
www.keysight.com/find/AssurancePlans
Up to five years of protection and no budgetary surprises to ensure your
instruments are operating to specification so you can rely on accurate
measurements.
www.keysight.com/go/quality
Keysight Technologies, Inc.
DEKRA Certified ISO 9001:2008
Quality Management System
Keysight Channel Partners
www.keysight.com/find/channelpartners
Get the best of both worlds: Keysight’s measurement expertise and product
breadth, combined with channel partner convenience.
www.keysight.com/find/fieldfox
www.keysight.com/find/im_forum
For more information on Keysight
Technologies’ products, applications or
services, please contact your local Keysight
office. The complete list is available at:
www.keysight.com/find/contactus
Americas
Canada
Brazil
Mexico
United States
(877) 894 4414
55 11 3351 7010
001 800 254 2440
(800) 829 4444
Asia Paciic
Australia
China
Hong Kong
India
Japan
Korea
Malaysia
Singapore
Taiwan
Other AP Countries
1 800 629 485
800 810 0189
800 938 693
1 800 11 2626
0120 (421) 345
080 769 0800
1 800 888 848
1 800 375 8100
0800 047 866
(65) 6375 8100
Europe & Middle East
Austria
Belgium
Finland
France
Germany
Ireland
Israel
Italy
Luxembourg
Netherlands
Russia
Spain
Sweden
Switzerland
United Kingdom
0800 001122
0800 58580
0800 523252
0805 980333
0800 6270999
1800 832700
1 809 343051
800 599100
+32 800 58580
0800 0233200
8800 5009286
800 000154
0200 882255
0800 805353
Opt. 1 (DE)
Opt. 2 (FR)
Opt. 3 (IT)
0800 0260637
For other unlisted countries:
www.keysight.com/find/contactus
(BP-04-23-15)
This information is subject to change without notice.
© Keysight Technologies, 2008 - 2015
Published in USA, May 23, 2015
5989-8618EN
www.keysight.com
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