Agilent Technologies FieldFox N9912A User manual

Agilent
FieldFox
RF Analyzer
N9912A
User’s Guide
Manufacturing Part Number: N9912–90001
Print Date: October 01, 2012
Supersedes: September 04, 2012
©Agilent Technologies, Inc.

2 N9912A FieldFox User’s Guide
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The hardware and/or software described in this document are furnished under a license and may be
used or copied only in accordance with the terms of such license.
Contacting Agilent
Assistance with test and measurements needs and information on finding a local Agilent office are
available on the Web at: http://www.agilent.com/find/assist
If you do not have access to the Internet, please contact your Agilent field engineer.
In any correspondence or telephone conversation, refer to the Agilent product by its model number
and full serial number. With this information, the Agilent representative can determine whether your
product is still within its warranty period.
Safety and Regulatory Information
The safety and regulatory information pertaining to this product is located on page 172.
Where to Find the Latest Information
Documentation is updated periodically. For the latest information, please visit:
http://www.agilent.com/find/fieldfox
Software Updates
Is your product software up-to-date? Periodically, Agilent releases software updates to fix known
defects and incorporate product enhancements. To search for software updates for your product, go to
www.agilent.com/find/fieldfoxsupport

FieldFox User’s Guide 3
Elements of this product's Software use SharpZipLib as an "as provided" stand alone capability.
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Copyright (c) 2005-2008 Terence Parr
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4 N9912A FieldFox User’s Guide
What’s New in A.6.00 Release ...................................................... 7
Overview......................................................................................................8
Options and Features....................................................................... 8
Accessories ....................................................................................... 9
FieldFox Manuals, Software, and Supplemental Help ............. 10
Preparing for Initial Use of Your New FieldFox ...................................11
Check the Shipment....................................................................... 11
Meeting Power Requirements for the AC/DC Adapter ........... 11
Install the Lithium-Ion Battery ..................................................... 12
FieldFox ON/OFF Settings ............................................................ 13
FieldFox High-Temperature Protection ....................................... 13
Avoid Overpowering the FieldFox ................................................ 14
Take the FieldFox Tour .................................................................. 15
Front Panel....................................................................................... 16
Top Panel ......................................................................................... 17
Side Panel........................................................................................ 17
Screen Tour ..................................................................................... 18
How to Enter Numeric Values...................................................... 19
CAT (Cable and Antenna Test) Mode ....................................................20
CAT Mode Settings ........................................................................ 21
Return Loss Measurements ......................................................... 28
1-Port Cable Loss Measurements ............................................... 28
2-Port Insertion Loss Measurements ......................................... 30
DTF (Distance to Fault) Measurements ................................................31
DTF Measurement Settings.......................................................... 32
NA (Network Analyzer) Mode................................................................40
NA Mode Settings.......................................................................... 40
Time Domain - Option 010.......................................................................53
Time Domain (Transform) Settings ............................................. 54
Trace Settings ................................................................................. 58
Gating ............................................................................................... 59

FieldFox User’s Guide 5
Calibration for CAT, NA, and VVM Modes ............................................61
Verifying Calibration and Jumper Cable Integrity ..................... 66
Calibration Method Summary....................................................... 68
SA (Spectrum Analyzer) Mode...............................................................69
SA Mode Settings .......................................................................... 70
Channel Measurements ................................................................ 96
Interference Analyzer (SA Mode) - Option 236..................................105
Spectrogram and Waterfall Displays......................................... 105
Record Playback ........................................................................... 109
CPM (Channel Power Meter) Mode - Option 311..............................118
Power Meter Settings.................................................................. 118
Power Meter Mode –Option 302 .........................................................121
Power Meter Settings.................................................................. 122
VVM (Vector Voltmeter) Mode –Option 308 ......................................127
Overview ........................................................................................ 128
VVM Mode Settings..................................................................... 129
1-Port Cable Trimming Measurements..................................... 132
2-Port Transmission Measurements......................................... 133
Data Analysis Features..........................................................................135
All about Markers......................................................................... 135
All about Limit Lines .................................................................... 145
All about Trace Math................................................................... 148
File Management....................................................................................151
Saving and Recalling Files .......................................................... 151
Printing........................................................................................... 158
System Settings......................................................................................159
Run/Hold ....................................................................................... 159
Preset ............................................................................................. 160
Volume Control ............................................................................. 160
Display Settings............................................................................ 161

6 N9912A FieldFox User’s Guide
Preferences.................................................................................... 163
System Configuration .................................................................. 164
Service Diagnostics...................................................................... 170
Working with the Lithium-Ion Battery ................................................172
Viewing Battery Charge Status.................................................. 172
Charging the Battery.................................................................... 174
Reconditioning the Battery......................................................... 175
Battery Care................................................................................... 176
Maximizing Battery Life............................................................... 177
Lithium Ion Battery Disposal...................................................... 177
Hardkey/Softkey Menus .......................................................................178
Safety Considerations ............................................................................188
Certification and Compliance Statements................................ 202
Appendix A: Connector Care Review...................................................203
Appendix B : Specifications/Data Sheet ............................................204
Appendix C : Instrument Calibration....................................................205
Index.........................................................................................................206

Overview 7
What’s New in A.6.00 Release
For customers upgrading FieldFox firmware, the following is a list of new
features:
CAT mode
Dual-Trace configuration .....................................22
Increased Resolution.............................................26
NA mode
Point Averaging......................................................46
Increased Resolution.............................................48
Manual Output Power Setting .............................49
Time Domain - Opt 010 .........................................53
CPM (Channel Power Meter) mode
New Mode (Opt 311)............................................118
Power Meter mode
Step Detection ......................................................126
VVM mode
Frequency setting to 1 Hz resolution ...............129
System
Relative Limit Lines ............................................146
Build Limits from Trace .....................................147
Security Level.......................................................168
Instrument Calibration .......................................205

8 N9912A FieldFox User’s Guide
Overview
Options and Features
The FieldFox may be ordered to include the following options and features:
Options and Features
Learn more
Cable and Antenna Test (CAT) Mode
▪ 2 MHz to 4 GHz (Option 104)
▪ 2 MHz to 6 GHz (Option 106)
Measurements:
▪ Distance-to-fault (DTF)
▪ DTF & Return Loss
▪ Return Loss (dB)
▪ VSWR
▪ DTF (VSWR)
▪ Cable Loss (1-Port)
▪ Insertion loss (2-Port) (Option 110)
CAT Mode on page 20
Transmission Measurement (Option 110)
CAT Mode on page 20
NA Mode on page 40
QuickCal (Option 111)
Built-in cal kit. Industry first!
Cal on page 62
Spectrum Analyzer (SA) Mode
General purpose measurements for basic monitoring and
troubleshooting.
▪ 100 kHz to 4 GHz (Option 230)
▪ 100 kHz to 6 GHz (Option 231)
SA Mode on page 69
▪ Preamplifier for Spectrum Analyzer (Option 235)
On page 76
▪ Interference Measurements (Option 236)
On page 105
Channel Power Meter Mode (Option 311)
No Power Meter required
On page 118
Power Meter Mode (Option 302)
Use with Agilent External USB Power Sensors
Power Meter Mode on
page 118
Network Analyzer (NA) Mode (Option 303)
▪ 2 MHz to 4 GHz (Option 104)
▪ 2 MHz to 6 GHz (Option 106)
▪ Vector 1-port (Standard)
▪ Scalar 2-port (Option 110)
Measurements:
▪ S11 Reflection (several formats)
▪ S21 Transmission (several formats) (Option 110)
▪ A receiver
▪ R receiver
NA Mode on page 40
Vector Voltmeter (VVM) Mode (Option 308)
Measure electrical length
VVM Mode on page 127

Overview 9
Measurements:
▪ 1-Port Cable Trimming (Mag and Phase)
▪ 2-Port Transmission (Magnitude only)
Designed for Field Environment
▪ Lightweight 6.2 lbs (2.8 kg) including battery
▪ Rugged, weather resistant shell with no fan/vents
▪ Daylight viewable 6.5” (16.5 cm) color LCD
▪ Backlit keys for night use
▪ Integrated kickstand
▪ Configurable hand and shoulder straps
▪ Softcase for carrying all gear
▪ Quick Reference Guide with laminated pages
Slots for removable USB Flash Drive and microSD Card
▪ Expands internal storage
▪ Useful for file transfer
▪ Flash Drive and microSD Card not included
▪ FieldFox release 4.0 supports microSDHC (high-capacity) Card
Save / Recall on page 153
Battery or AC Power
▪ Rechargeable Li-Ion battery with ~4 hr life
▪ Easily removable battery
▪ AC/DC adapter
▪ External battery charger (N9910X–872)
On page 172.
FieldFox Data Link Software
▪ Easily manage files and compile reports
▪ Reads data from the FieldFox and plots traces
▪ Help file included with the software installation
▪ Download the latest version of the software at
http://www.agilent.com/find/fieldfox
Additional Features
▪ Menus localized to 7 languages
Languages on page 163
Accessories
The following accessories are included with every FieldFox. Spare accessories
can be ordered at any time.
Accessory Part
Number
Description
N9910X–873
AC/DC Adapter
N9910X–870
Lithium-Ion Battery
N9910X–880
Softcase w/ Backpack & Shoulder Strap
N9910X–890
User’s Guide (printed copy)
N9910X–891
Quick Reference Guide (printed copy)
To see a complete list of accessories that are available for the FieldFox, please
visit: http://www.agilent.com/find/fieldfox.

10 N9912A FieldFox User’s Guide
FieldFox Manuals, Software, and Supplemental Help
The following manuals and software are available for the FieldFox. For the very
latest versions, please visit the FieldFox support website at:
www.agilent.com/find/fieldfoxsupport.
Check the manual revision on the first page of each manual.
User’s Guide –This manual, included with shipment.
Quick Reference Guide –Printed copy with laminated pages for outdoor use
included with shipment.
Supplemental Online Help - Concepts and Reference information.
http://na.tm.agilent.com/fieldfox/help/FieldFox.htm
FieldFox Data Link Software and Help –Free download.
Service Guide –Free download.
Firmware Updates –Check to see if you have the latest FieldFox firmware.
Conventions that are used in the Manual
Hardkey indicates a front panel button. The functionality of these buttons
does not change.
The six Softkey menus change dynamically and follow these color conventions:
Softkey Blue indicates an available setting.
Softkey Green indicates a change in menu level when selected.
Softkey Black indicates the default or selected setting.
Softkey Yellow indicates an active entry in process.
Softkey Grey indicates a key that is NOT available.
Safety Notes
The following safety notes are used throughout this manual. Familiarize yourself
with each of the notes and its meaning before operating this instrument. More
pertinent safety notes for using this product are located in “Safety
Considerations” on page 188.
CAUTION
Caution denotes a hazard. It calls attention to a procedure that, if not
correctly performed or adhered to, could result in damage to or destruction
of the product. Do not proceed beyond a caution notice until the indicated
conditions are fully understood and met.
WARNING
Warning denotes a hazard. It calls attention to a procedure which, if not
correctly performed or adhered to, could result in injury or loss of life. Do
not proceed beyond a warning note until the indicated conditions are fully
understood and met.

Preparing for Initial Use of Your New FieldFox 11
Preparing for Initial Use of Your New FieldFox
Check the Shipment
When you receive your FieldFox, check the shipment according to the following
procedure:
1. Inspect the shipping container for damage. Signs of damage may include a
dented or torn shipping container or cushioning material that indicates signs
of unusual stress or compacting. If not damaged, save the packaging
material in case the FieldFox needs to be returned.
2. Carefully remove the contents from the shipping container, and verify that
the standard accessories and your ordered options are included in the
shipment according to the Box Contents List.
3. For any question or problems, refer to Contacting Agilent on page 2.
Meeting Power Requirements for the AC/DC Adapter
Voltage: 100 VAC to 250 VAC
Frequency: 50 Hz to 60 Hz
Current: 1.25 –0.56 A
The AC/DC adapter supplied with the analyzer is equipped with a three-wire
power cord, in accordance with international safety standards. The power cable
appropriate to the original product shipping location is included with the
FieldFox.
Various AC power cables are available from Agilent that are unique to specific
geographic areas. You can order additional AC power cables that are correct for
use in different areas. For the power cord part number information please visit:
http://www.agilent.com/find/fieldfox

12 N9912A FieldFox User’s Guide
Install the Lithium-Ion Battery
Step
Notes
1. Open the battery door.
Push the button on the battery compartment door while sliding the door outward.
2. Insert the battery.
The terminals end of the battery is inserted into the compartment.
3. Close the battery door.
Slide the battery compartment door upwards until it latches.
Battery Usage
When you receive your FieldFox, the lithium-ion battery is not installed, and it is
partially charged to approximately 40% to preserve battery life. A lithium-ion
battery has no memory effect, so it can be used partially charged, as shipped.
A fully charged battery will power your FieldFox for about four hours, so if you
plan to use it for this long, you should fully charge the battery.
NOTE The FieldFox will shut down to prevent the battery from discharging to a level
that is damaging. If this occurs, charge the battery either internally or externally.
Learn more about the lithium-ion battery on page 172.
Battery charge status is viewable:
In the upper-right corner of the screen.
On the Battery screen. To access the screen, select System, Service
Diagnostics, and Battery.
On the battery. Open the FieldFox battery compartment door to view the
battery LCD.

Preparing for Initial Use of Your New FieldFox 13
To conserve battery power:
Use Run/Hold to single-trigger a measurement when needed. Hold is shown on
the display.
Press System then Display then Brightness. Use the ▲|▼ arrows, the rotary
knob, or numeric keypad to adjust the brightness to dim the FieldFox display
as much as possible.
Briefly press the power button to switch to Stand By mode when the FieldFox
is not being used. Press again to restore power. All current settings are
preserved.
NOTE When powered by the battery only, the FieldFox can stay in Stand By mode for a
maximum of four hours and then it powers off automatically. When the relative
battery charge drops about 20%, the FieldFox will power off to preserve the
remaining charge.
To recharge a battery:
Use ONLY a FieldFox charger to recharge a battery.
The battery can be fully charged while in the FieldFox in about 4 hours with
the FieldFox either ON or OFF.
It can be fully charged externally using the external battery charger (Opt 872)
in about 4 hours.
When the battery is removed, the FieldFox can still be powered by the AC/DC
adapter.
FieldFox ON/OFF Settings
To turn power ON, briefly press the power button. The LED is green. Boot-up
takes about 1 minute.
To switch to Stand By mode (low battery drain), briefly press the power
button. The LED is orange and blinks. To turn power ON, briefly press the
power button. Power and settings are restored instantly. See the Note above
concerning Stand By mode.
To turn Power OFF (very low battery drain), press and hold the power button
until power is OFF - about 4 seconds. The LED is off.
Data and instrument state are NOT automatically saved when the FieldFox is
powered OFF. Learn how to save data and instrument state on page 151.
FieldFox High-Temperature Protection
The following features prevent degradation or damage in the event of high
internal temperatures in the FieldFox.
NOTE Do NOT store the FieldFox in the softcase while powered ON or in Stand By
mode.
How to monitor the internal FieldFox temperature:
Press System, then Service Diagnostics.

14 N9912A FieldFox User’s Guide
Then Internal Temperatures.
The temperature at which the following events occur is the average of the RF1,
RF2, SB1, SB2 temperatures. These temperatures come from internal sensors
embedded within FieldFox.
Temperature Control Mode
At approximately 73 °C, the FieldFox enters Temperature Control mode by
reducing display intensity and measurement speed. This should decrease the
internal temperature which preserves measurement accuracy and maintains the
long-term reliability of the FieldFox.
When entering Temperature Control mode, save your instrument state and data
that you want to keep.
When the temperature drops to approximately 71°C, normal operating settings
are restored.
NOTE Measurement speed specifications do NOT apply in Temperature Control Mode.
High-Temp Shutdown
In extreme situations, Temperature Control mode may not stop an increase in
the FieldFox internal temperature. At approximately 75°C, High-Temperature
Shutdown will engage and turn OFF the FieldFox.
Just prior to shutdown, the FieldFox will display a warning of imminent shut
down.
Avoid Overpowering the FieldFox
The FieldFox can be damaged with too much power or voltage applied.
Exceeding the maximum RF power levels shown below will cause an ADC Over
Range message to appear on the screen.
WARNING
Maximum Input Voltages and Power:
RF OUT Connector: ±50 VDC, +23 dBm RF
RF IN: ±50 VDC, +27 dBm RF
DC Input: 19 VDC, 4 ADC
Learn more about Maximum power and voltages in the FieldFox Data Sheet on
page 204.
NOTE Very often, coaxial cables and antennas build up a static charge, which, if
allowed to discharge by connecting to the FieldFox, may damage the instrument
input circuitry. To avoid such damage, it is recommended to dissipate any static
charges by temporarily attaching a short to the cable or antenna prior to
attaching to the FieldFox.

Preparing for Initial Use of Your New FieldFox 15
Take the FieldFox Tour
Front Panel

16 N9912A FieldFox User’s Guide
Front Panel
No.
Caption
Description
Learn More on Page:
1
Power
ON: press momentarily.
STAND BY: with FieldFox power ON, press briefly.
OFF: press and hold until the FieldFox shuts off (about 4 seconds).
13
2
LED
Not lit: FieldFox OFF, not charging
Green: FieldFox ON. Charging status indicated by battery icon on screen
Orange, flashing: FieldFox STAND BY
Orange, intensity increasing, flashing slowly: FieldFox OFF, charging
13
3
System
Displays a submenu for system setup
159
4
Function keys
Includes: Freq/Dist, Scale/Amptd , BW , Sweep , Trace, Meas
Setup, Measure, and Mode
Refer to specific Mode.
5
Preset
Returns the analyzer to a known state
160
6
Enter
Confirms a parameter selection or configuration
--
7
Marker
Activates marker function
135
8
Mkr→/Tools
Displays a submenu for marker functions
139
9
Esc
Exits and closes the dialog box or clears the character input
--
10
Save/Recall
Saves the current trace or recalls saved data from memory
151
11
Limit
Sets limit lines for quick Pass/Fail judgment
145
12
Run/Hold
Toggles between free Run and Hold/Single operation.
159
13
Cal
Displays a submenu for calibration functions
53
14
Arrow keys
Increases or decreases a value or setting.
--
15
◄Back
Returns to the previous menu selection.
--
16
Rotary knob
Highlights an item for selection, or enables incremental changes to
values.
--
17
Softkeys
Allows selection of settings for configuring and performing
measurements, and for other FieldFox functions.
--
18
Screen
Transflective screen, viewable under all lighting conditions. If you are
using your FieldFox in direct sunlight, you do not need to shield the
display from the sunlight. In bright lighting conditions, the display is
brighter and easier to read when you allow light to fall directly on the
screen. Alternative color modes exist that maximize viewing in direct
sunlight conditions, as well as other conditions such as nighttime work.
Note: Clean the Transflective screen with gentle and minimal wiping
using Isopropyl alcohol applied to a lint-free cloth.
160 - Display settings
18 - Screen Tour

Preparing for Initial Use of Your New FieldFox 17
Top Panel
Caption
Description
Learn More
RF OUT
For CAT and NA measurements, use to make reflection measurements.
Maximum: ±50 VDC, +23 dBm RF
CAT Mode on page 20
NA Mode on page 40
Ext Trig/Ext Ref
External Reference connector to connect to an external frequency
reference. Maximum: 5.5 VDC.
Ext Ref on page 165
Ext Trig (SA Mode) on
page 87
RF IN
For CAT and NA mode, use to make transmission measurements.
For SA use to make all measurements.
Maximum: ±50 VDC, +27 dBm RF.
SA Mode on page 69
Side Panel
Caption
Description
Learn More
Ethernet cable connector to read trace data using the FieldFox Data Link Software.
Download the latest version of the software at
http://www.agilent.com/find/fieldfox
Reserved for future use.
DC power connector used to connect to the AC/DC adapter. Maximum: 19 VDC, 4
ADC.
On page 12
Micro Secure Digital slot. Use to extend the memory of the FieldFox.
File locations on page 151
Standard USB connector used to connect a power sensor for Power Meter Mode.
Also used to save files to a USB flash drive.
Use of Keyboard and Mouse is NOT supported.
File locations on page 151
Audio output jack for use with SA Mode Tune and Listen.
On page 80

18 N9912A FieldFox User’s Guide
Screen Tour
Caption
Description
Learn More on Page:
1
Title –write your own text here
162
2
Current Mode
3
Run / Hold
159
4
Display Format
Mode dependent
5
Scale/division
Mode dependent
6
Calibration Status (CAT and NA)
Detection Method (SA)
61
7
Velocity Factor (Fault Meas)
34
8
Averaging Status and Count
Mode dependent
9
Data / Mem Display (CAT and NA)
Step / FFT (SA)
148- Trace Math
80 - Res BW
10
Resolution Setting
Mode dependent
11
Measurement Start Freq or Distance
Mode dependent
12
Bandpass / Lowpass setting (Fault Meas)
IF BW in NA Mode
34
13
Output Power Level (CAT and NA)
27
14
Measurement Stop Freq or Distance
Mode dependent
15
Actual Sweep Time
Mode dependent
16
Limit Line Status
145
17
Time and Date
165
18
Marker Readout
135
19
Battery Status
172
20
Measurement Type (CAT and NA)
21
Reference Level
Mode dependent
22
Reference Position
Mode dependent

Preparing for Initial Use of Your New FieldFox 19
How to Enter Numeric Values
Many settings on the FieldFox require the entry of numeric values.
How to enter numeric values
Use any combination of the following keys:
Numeric 0–9 keys, along with the polarity ( +/-) key.
Up/Down arrow keys to increment or decrement values.
Rotary knob to scroll through a set of values.
Back erases previously entered values.
Esc exits data entry without accepting the new value.
To complete the setting:
Press Enter or a different softkey or hardkey.
Multiplier Abbreviations
Many times after entering numeric values, a set of multiplier or suffix softkeys
are presented. The following explains the meaning of these abbreviations.
Select Frequency multipliers as follows:
GHz Gigahertz (1e9 Hertz)
MHz Megahertz (1e6 Hertz)
kHz Kilohertz (1e3 Hertz)
Hz Hertz
Select Time multipliers as follows:
s Seconds
ms milliseconds (1e–3)
us microseconds (1e–6)
ns nanoseconds (1e–9)
ps picoseconds (1e-12)

20 N9912A FieldFox User’s Guide
CAT (Cable and Antenna Test) Mode
CAT Mode is typically used to test an entire transmission system, from the
transmitter to the antenna. This process is sometimes referred to as Line
Sweeping.
CAT Mode is similar to NA (Network Analyzer) Mode. Learn more in the
Supplemental Online Help: http://na.tm.agilent.com/fieldfox/help/
CAT Mode Distance to Fault measurements are discussed on page 31.
In this Chapter
Measurement Selection.........................................21
Dual-Trace Configurations...................................22
Coupled Frequency ...............................................23
Quick Settings ........................................................22
Frequency Range ...................................................24
Scale Settings .........................................................24
Averaging ...............................................................25
Single/Continuous .................................................26
Resolution ...............................................................26
Sweep Time.............................................................26
Output Power .........................................................27
Interference Rejection ..........................................27
Procedures
Return Loss Measurement ...................................28
1-Port Cable Loss Measurement..........................28
2-Port Insertion Loss Measurement ...................30
Distance to Fault Measurements.........................31
See Also
All about Calibration.............................................53
Set Markers...........................................................135
Use Limit Lines ....................................................145
Use Trace Math ....................................................148
Making 75Ω (ohm) Measurements at the FieldFox Supplemental Online Help:
http://na.tm.agilent.com/fieldfox/help/