Agilent Technologies FieldFox N9913A User manual

Agilent
FieldFox Analyzers
N9913A, N9914A
N9915A, N9916A, N9917A, N9918A
N9925A, N9926A, N9927A, N9928A
N9935A, N9936A, N9937A, N9938A
User’s Guide
Manufacturing Part Number: N9927–90001
Print Date: July 2, 2013
Supersedes: March 25, 2013
©Agilent Technologies, Inc.

2 FieldFox User’s Guide
Warranty Statement
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Technology Licenses
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 188.
Where to Find the Latest Information
Documentation is updated periodically. For the latest information, please visit:
www.agilent.com/find/fieldfoxsupport
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 the Agilent Technical
Support website at: http://www.agilent.com/find/TechSupport or www.agilent.com/find/fieldfoxsupport.

FieldFox User’s Guide 3
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Copyright (c) 2005-2008 Terence Parr
All rights reserved.
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Redistribution and use in source and binary forms, with or without modification, are permitted provided that the
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DAMAGE.

4 FieldFox User’s Guide
A.07.00 Firmware Release Updates............................................... 7
Overview......................................................................................................8
Models and Options......................................................................... 8
Accessories ....................................................................................... 8
FieldFox Manuals, Software, and Supplemental Help ............... 9
Preparing for Initial Use of Your New FieldFox ...................................10
Check the Shipment....................................................................... 10
Meeting Power Requirements for the AC/DC Adapter ........... 10
Install the Lithium-Ion Battery ..................................................... 11
FieldFox ON/OFF Settings ............................................................ 12
FieldFox High-Temperature Protection....................................... 12
Avoid Overpowering the FieldFox ................................................ 13
Take the FieldFox Tour .................................................................. 14
Front Panel....................................................................................... 15
Top Panel ......................................................................................... 16
Right Side Panel.............................................................................. 17
Left 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 ......................................................... 27
1-Port Cable Loss Measurements ............................................... 28
2-Port Insertion Loss Measurements ......................................... 29
DTF (Distance to Fault) Measurements ................................................30
DTF Measurement Settings.......................................................... 31
NA (Network Analyzer) Mode................................................................38
NA Mode Settings.......................................................................... 38
Time Domain - Option 010.......................................................................53
Time Domain (Transform) Settings ............................................. 54
Trace Settings ................................................................................. 58

FieldFox User’s Guide 5
Gating ............................................................................................... 59
Calibration for NA, CAT, and VVM Modes ............................................62
Verifying Calibration and Jumper Cable Integrity..................... 73
Calibration Method Summary....................................................... 74
SA (Spectrum Analyzer) Mode...............................................................75
SA Mode Settings .......................................................................... 76
Channel Measurements .............................................................. 106
Interference Analyzer (SA Mode) Option 236 ....................................115
Spectrogram and Waterfall Displays......................................... 115
Record Playback ........................................................................... 119
Reflection Mode (SA Models) ..............................................................128
Reflection Mode Settings............................................................ 129
Channel Power Meter (CPM) Mode Option 310 ................................131
CPM Settings ................................................................................ 131
Power Meter Mode ................................................................................134
Power Meter Settings.................................................................. 135
VVM (Vector Voltmeter) Mode.............................................................140
Overview ........................................................................................ 141
VVM Mode Settings..................................................................... 141
1-Port Cable Trimming Measurements..................................... 145
2-Port Transmission Measurements......................................... 146
A/B and B/A Measurements .................................................... 147
Data Analysis Features..........................................................................148
All about Markers......................................................................... 148
All about Limit Lines .................................................................... 158
All about Trace Math................................................................... 161
File Management....................................................................................164
Saving and Recalling Files .......................................................... 164
Printing........................................................................................... 171

6 FieldFox User’s Guide
System Settings......................................................................................172
Run/Hold ....................................................................................... 172
Preset ............................................................................................. 173
Audio (Volume) Control............................................................... 173
Display Settings............................................................................ 174
Preferences.................................................................................... 176
System Configuration .................................................................. 178
Service Diagnostics...................................................................... 186
Working with the Lithium-Ion Battery ................................................188
Viewing Battery Charge Status.................................................. 188
Charging the Battery.................................................................... 189
Reconditioning the Battery......................................................... 191
Battery Care................................................................................... 192
Maximizing Battery Life............................................................... 192
Lithium Ion Battery Disposal...................................................... 193
Hardkey/Softkey Menus .......................................................................194
Safety Considerations ............................................................................204
Certification and Compliance Statements................................ 212
Appendix A: Connector Care Review...................................................213
Appendix B: Specifications/Data Sheet .............................................214
Appendix C: Instrument Calibration.....................................................215
Index.........................................................................................................216

Overview 7
A.07.00 Firmware Release Updates
For customers upgrading FieldFox firmware, the following is a list of changes
from the previous release:
NA Mode
3-trace overlay configuration ..............................40
External Triggering ...............................................48
Removed limitations on Marker Table .............151
Expanded Marker Formats ................................153
Marker Colors.......................................................152
SA Mode
InstAlign annotation ...........................................100
RF Burst Triggering...............................................94
RF Burst Alignment.............................................101
Field Strength Correction (Red) Trace..............83
Longer Zero span sweep times............................93
Negative Trigger Delay..........................................94
FFT Gating ..............................................................97
CAT Mode
Distance Units saved to Preferences ................176
All Modes (System)
Limit Beep on Pass..............................................160
Preferences Quick Settings table ......................176
Date and Time change restrictions...................184
Power ON ..............................................................185
NA Factory Cal date ............................................186

8 FieldFox User’s Guide
Overview
Models and Options
Models
Model
Max Freq (GHz)
Description
N9913A
4
Vector Network Analyzer AND Spectrum Analyzer
N9914A
6.5
Vector Network Analyzer AND Spectrum Analyzer
N9915A
9
Vector Network Analyzer AND Spectrum Analyzer
N9916A
14
Vector Network Analyzer AND Spectrum Analyzer
N9917A
18
Vector Network Analyzer AND Spectrum Analyzer
N9918A
26.5
Vector Network Analyzer AND Spectrum Analyzer
N9925A
9
Vector Network Analyzer
N9926A
14
Vector Network Analyzer
N9927A
18
Vector Network Analyzer
N9928A
26.5
Vector Network Analyzer
N9935A
9
Spectrum Analyzer
N9936A
14
Spectrum Analyzer
N9937A
18
Spectrum Analyzer
N9938A
26.5
Spectrum Analyzer
Minimum Frequency: 30 kHz for all models
FieldFox Options: For a comprehensive list, view the FieldFox Configuration
Guide at: http://cp.literature.agilent.com/litweb/pdf/5990-9836EN.pdf
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.

Overview 9
FieldFox Manuals, Software, and Supplemental Help
The following manuals and software are available for the FieldFox. To see if you
have the very latest versions of each of these, please visit our 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 204.
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.

10 FieldFox User’s Guide
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

Preparing for Initial Use of Your New FieldFox 11
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 188.
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.
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.

12 FieldFox User’s Guide
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.
The battery can be fully charged externally using the external battery charger
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. Boot-up takes about 1
minute.
To switch to Stand By mode (low battery drain), briefly press the power
button. 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. Data and instrument state are NOT
automatically saved when the FieldFox is powered OFF. Learn how to save
data and instrument state on page 164.
You can make a setting to automatically Power ON the FieldFox when a power
source is connected. Learn how on page 185.
Power button LED status
Solid green –Power is ON
Blinking green –FieldFox in Stand By mode
Blinking amber –Battery charging.
Blinking amber and green –Stand By mode and battery charging.
Not lit –Power is Off and battery is not charging.
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.
Then Internal Temperatures.

Preparing for Initial Use of Your New FieldFox 13
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, switching to Outdoor Sun display colors, and
reducing measurement speed. This should decrease the internal temperature
which preserves measurement accuracy and maintains the long-term reliability
of the FieldFox. When this occurs, the following message is displayed on the
FieldFox screen:
The system is entering Temperature Control Mode due to high internal
temperature.
When entering Temperature Control mode, save your instrument state and data
that you want to keep.
When the temperature drops to approximately 71°C, a message is displayed
indicating that the FieldFox is leaving Temperature Control Mode and 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 IN/OUT Connectors: ±50 VDC, +27 dBm RF
DC Input: 19 to 19 VDC, 40 Watts maximum when charging battery
Learn more about Maximum power and voltages in the
FieldFox Data Sheet on page 214.
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.

14 FieldFox User’s Guide
Take the FieldFox Tour
Front Panel

Preparing for Initial Use of Your New FieldFox 15
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).
12
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
12
3
System
Displays a submenu for system setup
172
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
173
6
Enter
Confirms a parameter selection or configuration
--
7
Marker
Activates marker function
148
8
Mkr→/Tools
Displays a submenu for marker functions
153
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
164
11
Limit
Sets limit lines for quick Pass/Fail judgment
158
12
Run/Hold
Toggles between free Run and Hold/Single operation.
172
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.
173 - Display settings
18 - Screen Tour

16 FieldFox User’s Guide
Top Panel
Caption
Description
Learn More
Port 1
RF Output
For CAT and NA measurements, use to make reflection measurements.
Maximum: ±50 VDC, +27 dBm RF
CAT Mode on page 20
NA Mode on page 38
Port 2
SA RF Input
For SA, use to make all measurements.
For CAT, NA, and VVM mode, use to make Port 2 transmission
measurements.
Maximum: ±50 VDC, +27 dBm RF.
SA Mode on page 75
GPS Ant
For use with built-in GPS. Produces a 3.3 VDC bias voltage for the antenna
pre-amplifier. Use with a GPS antenna such as N9910X-825. Other GPS
antennas can also be used.
GPS on page 179.
Ref In
Trig In
Frequency Reference Source and External Trigger Input signal.
Maximum: 5.5 VDC.
Freq. Ref on page 181.
Ext Trig (SA Mode) on
page 94

Preparing for Initial Use of Your New FieldFox 17
Right Side Panel
Connector
Description
Learn More
Ethernet cable connector to read trace data using the FieldFox Data Link Software.
Download the latest version of the software at:
www.agilent.com/find/fieldfoxsupport
On page 184.
IF Out used in SA mode for external signal processing.
On page 91.
Frequency Reference Source Output
Trigger Output –reserved for future development.
On page 181.
Secure Digital slot. Use to extend the memory of the FieldFox.
File locations on page 164
Reserved for future use.
Two standard USB connectors 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 164
Left Side Panel
Caption
Description
Learn More
Audio output jack for use with SA Mode Tune and Listen.
On page 86
DC Voltage Source for use with external DC Bias.
On page 182
DC power connector used to connect to the AC/DC adapter. Maximum: 19 VDC, 4
ADC.
On page 11

18 FieldFox User’s Guide
Screen Tour
Caption
Description
Learn More on Page:
1
Title –write your own text here
175
2
Current Mode
3
Run / Hold
172
4
Display Format
Mode dependent
5
Scale/division
Mode dependent
6
Calibration Status (CAT and NA)
Detection Method (SA)
62
7
Velocity Factor (Fault Meas)
33
8
Averaging Status and Count
Mode dependent
9
Data / Mem Display (CAT and NA)
Step / FFT (SA)
161- Trace Math
86 - 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
33
13
Output Power Level (CAT and NA)
26
14
Measurement Stop Freq or Distance
Mode dependent
15
Actual Sweep Time
Mode dependent
16
Limit Line Status
158
17
Time and Date
179
18
Marker Readout
148
19
Battery Status
188
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 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/FieldFox.htm
CAT Mode Distance to Fault measurements are discussed on page 30.
In this Chapter
Measurement Selection.........................................21
Coupled Frequency ...............................................22
Quick Settings ........................................................22
Frequency Range ...................................................23
Scale Settings .........................................................23
Averaging ...............................................................24
Single/Continuous .................................................25
Resolution ...............................................................25
Sweep Time.............................................................25
Output Power .........................................................26
Interference Rejection ..........................................26
Procedures
Return Loss Measurement ...................................27
1-Port Cable Loss Measurement..........................28
2-Port Insertion Loss Measurement ...................29
Distance to Fault Measurements.........................30
See Also
All about Calibration.............................................53
Set Markers...........................................................148
Use Limit Lines ....................................................158
Use Trace Math ....................................................161
Making 75Ω (ohm) Measurements at the FieldFox Supplemental Online Help:
http://na.tm.agilent.com/fieldfox/help/FieldFox.htm