Fluke 96000 Series User manual

September 2014
© 2014 Fluke Corporation. All rights reserved. Specifications are subject to change without notice.
All product names are trademarks of their respective companies.
96000 Series
RF Reference Source
Service Manual

LIMITED WARRANTY AND LIMITATION OF LIABILITY
Each Fluke product is warranted to be free from defects in material and workmanship under
normal use and service. The warranty period is one year and begins on the date of shipment.
Parts, product repairs, and services are warranted for 90 days. This warranty extends only to the
original buyer or end-user customer of a Fluke authorized reseller, and does not apply to fuses,
disposable batteries, or to any product which, in Fluke's opinion, has been misused, altered,
neglected, contaminated, or damaged by accident or abnormal conditions of operation or
handling. Fluke warrants that software will operate substantially in accordance with its functional
specifications for 90 days and that it has been properly recorded on non-defective media. Fluke
does not warrant that software will be error free or operate without interruption.
Fluke authorized resellers shall extend this warranty on new and unused products to end-user
customers only but have no authority to extend a greater or different warranty on behalf of Fluke.
Warranty support is available only if product is purchased through a Fluke authorized sales outlet
or Buyer has paid the applicable international price. Fluke reserves the right to invoice Buyer for
importation costs of repair/replacement parts when product purchased in one country is submitted
for repair in another country.
Fluke's warranty obligation is limited, at Fluke's option, to refund of the purchase price, free of
charge repair, or replacement of a defective product which is returned to a Fluke authorized
service center within the warranty period.
To obtain warranty service, contact your nearest Fluke authorized service center to obtain return
authorization information, then send the product to that service center, with a description of the
difficulty, postage and insurance prepaid (FOB Destination). Fluke assumes no risk for damage in
transit. Following warranty repair, the product will be returned to Buyer, transportation prepaid
(FOB Destination). If Fluke determines that failure was caused by neglect, misuse, contamination,
alteration, accident, or abnormal condition of operation or handling, including overvoltage failures
caused by use outside the product’s specified rating, or normal wear and tear of mechanical
components, Fluke will provide an estimate of repair costs and obtain authorization before
commencing the work. Following repair, the product will be returned to the Buyer transportation
prepaid and the Buyer will be billed for the repair and return transportation charges (FOB
Shipping Point).
THIS WARRANTY IS BUYER'S SOLE AND EXCLUSIVE REMEDY AND IS IN LIEU OF ALL
OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY
IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
FLUKE SHALL NOT BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL, OR
CONSEQUENTIAL DAMAGES OR LOSSES, INCLUDING LOSS OF DATA, ARISING FROM
ANY CAUSE OR THEORY.
Since some countries or states do not allow limitation of the term of an implied warranty, or
exclusion or limitation of incidental or consequential damages, the limitations and exclusions of
this warranty may not apply to every buyer. If any provision of this Warranty is held invalid or
unenforceable by a court or other decision-maker of competent jurisdiction, such holding will not
affect the validity or enforceability of any other provision.
Fluke Corporation
P.O. Box 9090
Everett, WA 98206-9090
U.S.A.
Fluke Europe B.V.
P.O. Box 1186
5602 BD Eindhoven
The Netherlands
11/99

i
Table of Contents
Chapter Title Page
1 Introduction and Specifications......................................................... 1-1
Introduction............................................................................................ 1-1
Contact Fluke Calibration ...................................................................... 1-2
Safety Information ................................................................................. 1-2
Symbols............................................................................................. 1-3
General Safety Summary .................................................................. 1-3
Prevent Instrument Damage.............................................................. 1-5
Specifications ........................................................................................ 1-7
General Specifications (96040A and 96270A) .................................. 1-7
Frequency Reference Input/Output Specifications
(96040A and 96270A) ....................................................................... 1-8
Leveled Sine Specifications at Leveling Head Output
(96040A and 96270A) ....................................................................... 1-8
Leveled Sine Specifications at Microwave Output (96270A)............. 1-11
Leveled Sine Specifications at Leveling Head Output (96040A and
96270A) and Microwave Output (96270A) ........................................ 1-13
Modulation Specifications at Leveling Head Output
(96040A and 96270A) and Microwave Output (96270A)................... 1-15
Frequency Sweep Specifications at Leveling Head Output
(96040A and 96270A) and Microwave Output (96270A)................... 1-18
Frequency Counter Specifications..................................................... 1-19
Power Meter Readout Specifications (96270A only) ......................... 1-19
GPIB Command Emulation Mode Specifications .............................. 1-19
2 Theory of Operation ............................................................................ 2-1
Introduction............................................................................................ 2-1
Overall Functional Description .............................................................. 2-1
User Interface .................................................................................... 2-3
Frequency Synthesis ......................................................................... 2-4
Amplitude Control .............................................................................. 2-4
Frequency Modulation ....................................................................... 2-5
Amplitude Modulation ........................................................................ 2-5
Instrument Control ............................................................................. 2-6
Power Supplies.................................................................................. 2-6

96000 Series
Service Manual
ii
3 Performance Tests .............................................................................. 3-1
Introduction............................................................................................ 3-1
Recommended Tools and Equipment ................................................... 3-1
Performance Test.................................................................................. 3-4
Reference Frequency Accuracy ........................................................ 3-5
Frequency Accuracy (96040A and 96270A)...................................... 3-6
Harmonics and Spurious Signal Content - Levelling Head
(96040A and 96270A) ....................................................................... 3-9
Phase Noise Test (96040A and 96270A, Optional)........................... 3-12
Modulation Test-Leveling Head (96040A and 96270A, Optional) ..... 3-14
Frequency Counter Accuracy (96040A and 96270A)........................ 3-17
Level Accuracy – 50 ΩLeveling Head (96040A and 96270A) ......... 3-18
Attenuation Accuracy – 50 ΩLeveling Head
(Optional 96040A and 96270A) ........................................................ 3-31
VSWR Test – 50 ΩLeveling Head (Optional 96040A and 96270A) 3-33
Level Accuracy – 75 ΩLevelling Head (96040A and 96270A) ......... 3-36
Attenuation Accuracy – 75 ΩLeveling Head
(Optional, 96040A and 96270A) ........................................................ 3-49
VSWR Test – 75 Ω(Optional) ........................................................... 3-51
Microwave Output Level Accuracy
(96270A, Optional Functional Test)................................................... 3-55
Microwave Output Frequency Accuracy (96270A only) .................... 3-66
Microwave Output Harmonics and Spurious Signal Content
(96270A)............................................................................................ 3-70
Modulation Test (96270A, Optional).................................................. 3-75
4 Calibration Adjustment....................................................................... 4-1
Introduction............................................................................................ 4-1
Calibration Adjustments ........................................................................ 4-1
Rear Panel Calibration Enable Switch............................................... 4-3
Reference Frequency Adjustment ..................................................... 4-3
Base Adjustment - Front Panel Head RF Output .............................. 4-4
Leveling Head Adjustment – 50 Ω..................................................... 4-7
Leveling Head Adjustment – 75 Ω..................................................... 4-10
Microwave Output Adjustment – With Low-Level
Output Option Fitted .......................................................................... 4-14
Microwave Output Adjustment – Low-Level Output
Option Not Fitted ............................................................................... 4-16
Microwave Output Flatness Characterization.................................... 4-18
5 Maintenance......................................................................................... 5-1
Operator Maintenance........................................................................... 5-1
Clean the Product.............................................................................. 5-1
Clean the Air Filter............................................................................. 5-2
Replace the Line-Power Fuses ......................................................... 5-2
Troubleshooting..................................................................................... 5-4
Disassembly and Reassembly .............................................................. 5-4
Before You Start ................................................................................ 5-5
Removing External Hardware Components ...................................... 5-5
Handles ......................................................................................... 5-5
Top and Bottom Covers................................................................. 5-6
Bottom Feet ................................................................................... 5-6
Shields........................................................................................... 5-6
Remove the Air Filter......................................................................... 5-6

Contents (continued)
iii
Removing Major Assemblies ............................................................. 5-8
RF Output PCA.............................................................................. 5-8
2 x 2W Coaxial Relays .................................................................. 5-10
Front Panel Assembly ................................................................... 5-10
Display and Keypad PCA .............................................................. 5-11
Digital PCA .................................................................................... 5-12
27 GHz Control PCA (96270A)...................................................... 5-13
Synthesizer PCA ........................................................................... 5-14
Fans............................................................................................... 5-15
Rear Panel Assemblies ................................................................. 5-16
Interconnection PCA...................................................................... 5-17
Low Voltage Transformer .............................................................. 5-18
Power Supply PCA ........................................................................ 5-18
Switch Mode Power Supply Module .............................................. 5-19
Leveling Head 50 Ωand 75 Ω–Disassembly and Reassembly........ 5-19
Leveling Head Disassembly Procedure......................................... 5-20
Leveling Head Reassembly Procedure ......................................... 5-21
Reassembling the Product ................................................................ 5-21
Safety Test ........................................................................................ 5-21
Running Self-Test.................................................................................. 5-22
Review the Results............................................................................ 5-23
Interpreting the Results ..................................................................... 5-25
Firmware Upgrade................................................................................. 5-26
Equipment Required for the Restore or Upgrade .............................. 5-26
Firmware Installation ......................................................................... 5-27
6 Lists of Replaceable Parts.................................................................. 6-1
Introduction............................................................................................ 6-1
How to Obtain Parts .............................................................................. 6-1
Replaceable Parts Lists......................................................................... 6-2
Appendices
A Performance Test Record ............................................................... A-1

96000 Series
Service Manual
iv

v
List of Tables
Table Title Page
1-1. Symbols..................................................................................................... 1-3
3-1. Recommended Equipment........................................................................ 3-2
3-1. Recommended Equipment........................................................................ 3-3
3-2. Frequency Accuracy Test.......................................................................... 3-7
3-3. Harmonics Test ......................................................................................... 3-11
3-4. Spurious Content Test............................................................................... 3-12
3-5. Phase Noise Test (96040A and 96270A).................................................. 3-14
3-6. AM Rate Test – Leveling Head (96040A and 96270A) ............................. 3-15
3-7. AM Depth Test – Leveling Head (96040A and 96270A) ........................... 3-15
3-8. FM Rate Test – Levelling Head (96040A and 96270A)............................. 3-16
3-9. FM Deviation Test – Leveling Head (96040A and 96270A ....................... 3-17
3-10. 50 ΩLeveling Head, Low Frequency Level Accuracy Test Points............ 3-21
3-11. 50 ΩLeveling Head, High Frequency Level Accuracy Test Points,
Thermal Power Sensor (96040A and 96720A) ......................................... 3-23
3-12. 50 ΩLeveling Head, High Frequency Level Accuracy Test Points,
Diode Power Sensor (96040A and 96720A) ............................................. 3-25
3-13. 50 ΩLeveling Head, Low-Level Accuracy Test Points Part A
(96040A and 96270A) ............................................................................... 3-28
3-13. 50 ΩLeveling Head, Low Level Accuracy Test Points
(96040A and 96720A) ............................................................................... 3-28
3-14. 50 Leveling Head, Optional Ultra-Low Level Accuracy Test Points
(96040A and 96270A) ............................................................................... 3-30
3-15. 50 ΩLeveling Head Attenuation Accuracy (50 Ω) Test Points.................. 3-32
3-16. 50 ΩLeveling Head VSWR Test (96040A and 96270A)........................... 3-36
3-17. Level Accuracy Test (75 Ω), Low Frequency Test Points ......................... 3-39
3-18. 75 ΩLeveling Head, High Frequency Level Accuracy Test Points
(96040A and 96270A) ............................................................................... 3-42
3-19. 75 ΩLeveling Head, Low Level Accuracy Test Points, Part A
(96040A and 96270A) ............................................................................... 3-45
3-20. 75 ΩLeveling Head, Low Level Accuracy Test Points, Part B
(96040A and 96270A) ............................................................................... 3-46
3-21. 75 ΩLeveling Head Optional Ultra-Low Level Accuracy Test
(96040A and 96270A) ............................................................................... 3-48
3-22. Attenuation Accuracy Test - 75 ΩLeveling Head (96040A and 96270A) . 3-51
3-23. VSWR Test (75 Ω) .................................................................................... 3-55

96000 Series
Service Manual
vi
3-24. Microwave Output Level Accuracy Test, Low Frequency Test Points ...... 3-58
3-25. Microwave Output Level Accuracy Test, High Frequency Test Points...... 3-61
3-26. Microwave Output Level Accuracy Test, Additional Low Level Test
Points, Part A ............................................................................................ 3-64
3-27. Microwave Output Level Accuracy Test, Additional Low Level
Test Points, Part B .................................................................................... 3-65
3-28. Frequency Accuracy Test – Microwave Output......................................... 3-68
3-29. Harmonics Test, Microwave Output .......................................................... 3-73
3-30. Sub Harmonics and Interharmonics Test, Microwave Output ................... 3-74
3-31. Microwave Output AM Rate Test .............................................................. 3-76
3-32. Microwave Output AM Depth Test ............................................................ 3-76
3-33. Microwave Output FM Rate Test............................................................... 3-77
3-34. Microwave Output FM Deviation Test ....................................................... 3-77
5-1. Power Input Fuse ...................................................................................... 5-3
5-2. Descriptions of the Rows in a Test Failure Display ................................... 5-24
6-1. Final Assembly .......................................................................................... 6-2

vii
List of Figures
Figure Title Page
2-1. Overall Functional Block Diagram (96040A) ............................................. 2-2
2-2. Overall Functional Block Diagram (96270A) ............................................. 2-3
2-3. Synthesizer PCA - Simplified Schematic................................................... 2-8
2-4. RF Output PCA - Simplified Schematic..................................................... 2-9
2-5. Leveling Head Assembly - Simplified Block Diagram................................ 2-10
2-6. 27 GHz Control and Multiplier PCA – Simplified Schematic ..................... 2-11
3-1. Equipment Connections - Reference Frequency Accuracy Test............... 3-5
3-2. Equipment Connections - Frequency Accuracy Test ................................ 3-6
3-3. Equipment Connections - Frequency Accuracy Test Part B ..................... 3-8
3-4. Equipment Connections - Harmonics and Spurious Content Test ............ 3-10
3-5. Equipment Connections - 50 Leveling Head, Low Frequency
Level Accuracy Test Points (96040A and 96720A)................................... 3-19
3-6. Equipment Connections - 50 ΩLeveling Head, High Frequency
Level Accuracy Test Points (96040A and 96720A)................................... 3-22
3-7. Equipment Connections - 50 ΩLeveling Head, Low Level
Accuracy Test Points................................................................................. 3-26
3-8. Equipment Connections - 50 ΩLeveling Head Attenuation
Accuracy Test............................................................................................ 3-31
3-9. Equipment Connections - 50 ΩLeveling Head VSWR Test
(96040A and 96270A) ............................................................................... 3-33
3-10. 75 ΩEquipment Connections - Leveling Head, Low Frequency
Level Accuracy Test Points (96040A and 96270A)................................... 3-38
3-11. Equipment Connections- 75 ΩLeveling Head, High Frequency
Level Accuracy Test Points (96040A and 96270A)................................... 3-40
3-12. Equipment Connections- 75 ΩLeveling Head, Low Level Accuracy
Test Points (96040A and 96270A) ............................................................ 3-43
3-13. Equipment Connections - Attenuation Accuracy Test 75 Ω
Leveling Head (96040A and 96270A) ....................................................... 3-50
3-14. Equipment Connections - 75 ΩLevelling Head VSWR Test
(96040A and 96270A) ............................................................................... 3-53
3-15. Microwave Output Level Accuracy Tests, Low Frequency Points
Connections .............................................................................................. 3-57
3-16. Microwave Output Level Accuracy Tests, High Frequency Points............ 3-59
3-17. Microwave Output Level Accuracy Tests, Low-level Points (Low-level
Microwave Output option only).................................................................. 3-62

96000 Series
Service Manual
viii
3-18. Equipment Connections - Microwave Output Frequency Accuracy
Test Part A ................................................................................................ 3-67
3-19. Equipment Connections - Microwave Output Frequency Accuracy
Test Part B ................................................................................................ 3-69
3-20. Equipment Connections – Microwave Output Harmonics and
Spurious Content Test............................................................................... 3-71
5-1. Access the Fuse........................................................................................ 5-3
5-2. Removing External Hardware and Shields................................................ 5-7
5-3. Removing the RF Output PCA .................................................................. 5-9
5-4. Removing the Front Panel Assembly ........................................................ 5-11
5-5. Removing the Digital PCA......................................................................... 5-12
5-6. Removing the 27 GHz Control PCA (96270A) .......................................... 5-13
5-7. Removing the Synthesizer PCA ................................................................ 5-14
5-8. Removing the Fans ................................................................................... 5-15
5-9. Removing the Rear Panel ......................................................................... 5-17
5-10. Removing Power Supply PCA................................................................... 5-19
5-11. Exploded View of the Leveling Head......................................................... 5-20
5-12. Select a Self-Test Sequence..................................................................... 5-22
5-13. Summary of Self-Test Results................................................................... 5-23
5-14. Expanded Self-Test Failure Results.......................................................... 5-23
6-1. Final Assembly .......................................................................................... 6-4

1-1
Chapter 1
Introduction and Specifications
Introduction
This manual provides performance test, calibration adjustment, and minor
troubleshooting and repair procedures necessary to verify and maintain the
performance of the 96000 Series RF Reference Source (the Product or the
Instrument).
Note
In many of the procedures in this manual, the Instrument is referred
to as the UUT (Unit Under Test). Performance test and calibration
adjustment procedures apply to the 96040A and 96270A models
unless otherwise noted.
The performance test is a series of tests based on the published 1-year
specifications for the Instrument. Fluke Calibration recommends the performance
test as an acceptance test when the Instrument is first received and later as a
calibration procedure to ensure that the Instrument meets its published
specifications. Fluke Calibration recommends a 1-year calibration cycle for the
Instrument.
Use calibration adjustments to correct out-of-tolerance parameters so they meet
published specifications. If the Instrument fails the performance test, it is an
indication that the Instrument requires calibration adjustment and/or repair. While
calibration adjustment can be accomplished without removal of the covers, repair
requires access to the interior of the Instrument. See Chapter 5, Maintenance for
internal access and repair information.
Note
The Instrument top cover is removable for air filter cleaning access
without the need to break calibration integrity seals. A calibration
integrity seal is located on the internal top shield and is revealed
once the outer-top cover is removed (see Chapter 5, Maintenance
for details). Additional calibration integrity seals are located on the
rear panel over the lower outer cover and over the calibration enable
switch. Fluke Calibration recommends that users apply calibration
integrity seals in the same three locations.

96000 Series
Service Manual
1-2
Environmental and warm up conditions required for the performance test and
calibration adjustments are stated at the beginning of each of the respective
sections.
Unless otherwise directed, all connections are made via a Leveling Head of the
specified impedance.
Note
The Leveling Head is an integral part of the UUT functionality.
Repairs detailed in this manual are to the Modular-level only. For repair to a
deeper level, return the Product to Fluke Calibration or take the Product to a local
Fluke Calibration Service Center.
Contact Fluke Calibration
To contact Fluke Calibration, call one of the following telephone numbers:
•Technical Support USA: 1-877-355-3225
•Calibration/Repair USA: 1-877-355-3225
•Canada: 1-800-36-FLUKE (1-800-363-5853)
•Europe: [phone]
•Japan: [phone]
•Singapore: [phone]
•China: [phone]
•Brazil: [phone]
•Anywhere in the world: [phone]
To see product information or download manuals and the latest manual
supplements, visit Fluke Calibration’s website at www.flukecal.com.
To register your product, visit http://flukecal.com/register-product.
Safety Information
This section addresses safety considerations and describes symbols that may
appear either in this manual or on the Instrument. A Warning identifies
conditions and procedures that are dangerous to the user. A Caution identifies
conditions and procedures that can cause damage to the Product or the
equipment under test.
 Warning
To prevent possible electrical shock, fire, or personal injury,
carefully read the information under General Safety Summary
before attempting to install, use, or service the Product.

Introduction and Specifications
Safety Information 1
1-3
Symbols
The safety and electrical symbols shown in Table 1-1 may appear on the
Instrument or in this manual.
Table 1-1. Symbols
Symbol Meaning Symbol Meaning
Risk of Danger. Important
information. See Manual. Earth Terminal
Hazardous voltage. Risk of
electric shock. Recycle
IO Power ON / OFF Conforms to European Union
directives.
Intertek ETL listed mark for
CSA C22.2, 61010-1 and UL
61010-1
Conforms to relevant Australian
EMC standards
AC (Alternating Current) Conforms to relevant South
Korean EMC standards.

This product complies with the WEEE Directive (2002/96/EC) marking
requirements. The affixed label indicates that you must not discard this
electrical/electronic product in domestic household waste. Product Category: With
reference to the equipment types in the WEEE Directive Annex I, this product is
classed as category 9 "Monitoring and Control Instrumentation" product. Do not
dispose of this product as unsorted municipal waste. Go to Fluke’s website for
recycling information.
General Safety Summary
This manual contains information and warnings that must be observed to keep
the Instrument in a safe condition and ensure safe operation. Using or servicing
the Instrument in conditions other than as specified in this manual could
compromise your safety.
To use the Instrument correctly and safely, read and follow the precautions on
the next few pages, as well as the safety instructions or warnings given
throughout this manual. In addition, follow all generally accepted safety practices
and procedures when working with and around electricity.

96000 Series
Service Manual
1-4
Warning
To prevent possible electrical shock, fire, or personal injury:
•Read all safety information before you use the Product.
•Carefully read all instructions.
•Use the Product only as specified, or the protection supplied by the
Product can be compromised.
•Do not use the Product if it operates incorrectly.
•Do not use the Product around explosive gas, vapor, or in damp or wet
environments.
•Disable the Product if it is damaged.
•Do not use the Product if it is damaged.
•Use this Product indoors only.
•Use only the mains power cord and connector approved for the voltage
and plug configuration in your country and rated for the Product.
•Do not apply hazardous voltages to any connector other than the mains
supply to the mains input.
•Make sure the ground conductor in the mains power cord is connected to
a protective earth ground. Disruption of the protective earth could put
voltage on the chassis that could cause death.
•Replace the mains power cord if the insulation is damaged or if the
insulation shows signs of wear.
•If the mains power cord is to be the accessible disconnect device, the
mains power cord must not be longer than 3 meters (118.1 inches).
•Turn the Product off and remove the mains power cord. Stop for 2 minutes
to let the power assemblies discharge before you open the fuse door.
•Do not operate the Product with covers removed or the case open.
Hazardous voltage exposure is possible.
•Restrict the humidity of the operating environment to the level specified
for any equipment used that conforms to IEC60950-1 used with the
Product.
•Remove the input signals before you clean the product.
•Use only specified replacement parts.
•Use only specified replacement fuses.
•Have an approved technician repair the Product.
•Do not apply more than the rated voltage, between the terminals or
between each terminal and earth ground.
•Use good lifting practices when lifting or moving the Product. The Product
is an unbalanced load and can weigh as much as 18 kg (40 pounds).

Introduction and Specifications
Safety Information 1
1-5
Prevent Instrument Damage
Caution
To prevent possible damage to the Product or to equipment
under test:
•The front panel Head RF Output and Head Control
connectors on the Product are suited only for use with Fluke
96040A-xx Leveling Heads or the 9600FLT 1-GHz Wide
Offset Filter. Only compatible power sensors should be
connected to the front panel Sensor connectors. No other
connections are permitted.
•The Leveling Heads are fitted with close tolerance metrology
grade N-connectors compliant with MIL-C-39012 and MMC
Standards for Precision N-connectors. When used in
demanding metrology applications the Leveling Heads are
likely to be mated with similar high-quality connectors, thus,
minimizing the opportunity for wear and damage. However,
in applications that require frequent mating or mating to
lower quality connectors, the opportunity for damaging the
connectors increases. On these high-risk occasions,
consider using a sacrificial adapter to prevent damage to
the N connectors.
•Improper mating of 50 Ωand 75 Ωconnectors will cause
irreversible damage the center pin. Although appearance is
similar, the dimensions (pin diameter) of 75 Ωdiffer
significantly from those of 50 Ω. Make sure that the 50 Ω
Leveling Head is mated only to 50 Ωsystems and, likewise,
that the 75 ΩLeveling Head is mated only with 75 Ω
systems. Otherwise, mechanical damage of metrology-
grade connectors and out-of-tolerance performance is likely
to occur.
•Very high-grade flexible coaxial transmission line conducts
the RF input signal to 96040A-xx Leveling Heads. As with
any coaxial line, deformation of sidewalls or abrupt bending
can degrade performance. Take care to avoid mechanical
stress or tight bend radius < 60 mm (2.4 in).
•Critical connector mating dimensions could be damaged
during disassembly of a Leveling Head. DO NOT TAMPER with
the four mounting screws at the base of the N-Connector.
Leveling Head disassembly should only be performed by
qualified service personnel at a Fluke Service Center.

96000 Series
Service Manual
1-6
•The optional power sensor(s) contain components which
can be destroyed by electrostatic discharges. To prevent
this, never touch the sensor RF connector inner conductor
and never open the sensor. Never exceed the sensor
maximum RF power limit. Even brief overloads can destroy
the sensor.
•Reliable and repeatable RF interconnections are achieved
only at specified torque settings. Performance will be
impaired if torque settings are not observed, and permanent
connector damage is likely to result from over-tightening.
•To prevent damage to the Product, do not use aromatic
hydrocarbons or chlorinated solvents for cleaning.
•To prevent the public transmission of an unintentional RF signal,
never connect the Product output to an antenna outside a shielded
room.

Introduction and Specifications
Specifications 1
1-7
Specifications
General Specifications (96040A and 96270A)
Performance
All specifications apply to a 1-year calibration interval at an ambient temperature
of Tcal ±5 °C.
Nominal factory Tcal calibration temperature 23 °C.
Unless otherwise noted, specifications are stated at a 99 % confidence level
Standard Interfaces
IEEE488.2 (GPIB)
96270A only: Compatible power sensor inputs [1]
96270A only: USB memory device
Warmup Time 60 minutes
Temperature
Operating: 0 °C to 50 °C
Specified Operation: 5 °C to 40 °C
Storage: -20 °C to +70 °C
Relative Humidity Operating or Storage:
Non-condensing, 5 °C to 30 °C <90 %, <40 °C <75 %, <70 °C <45 %
Altitude Operating: ≤2,000 m
Non-operating: ≤12,000 m
Safety EN 61010-1: Pollution Degree 2, Installation Category II
Electromagnetic Compatibility
EN 61326 -1: Controlled.
Applies to use in Korea only. Class A Equipment (Industrial Broadcasting &
Communication Equipment) [2]
[2] This product meets requirements for industrial (Class A) electromagnetic
wave equipment and the seller or user should take notice of it. This equipment is
intended for use in business environments and is not to be used in homes.
Line Power Voltage: 100 V to 240 V rms with additional voltage fluctuations of ±10 %.
Frequency: 50 Hz to 60 Hz with additional frequency variation of ±3 Hz.
Power Consumption 250 VA
Dimensions
442 mm (17.4 in) wide, 146 mm (5.76 in) high and 551 mm (21.7 in) deep,
including handles. Mounts within industry-standard 483 mm (19 in) rack-mount
frames when fitted with Y9600 rack mounting kit.
Weight 18 kg (40 lb)
[1] See Power Meter Readout specifications for compatible power sensor details.
442 mm (17.4")
146 mm
(5.75")
133 mm
(5.24")
551 mm (21.7")
hpn366eps
96040A and 96270A Dimensions

96000 Series
Service Manual
1-8
Frequency Reference Input/Output Specifications (96040A and 96270A)
Frequency Reference Input Rear-panel Reference Frequency Input BNC connector
Frequency 1 MHz to 20 MHz in 1 MHz steps ±0.3 ppm, typical
Level 1 V pk nominal into 50 Ω, ±5 V pk max
Frequency Reference Output Rear-panel Reference Frequency Output BNC connector
Frequency 1 MHz or 10 MHz, user selectable
Level 1.5 V pk-pk into 50 Ω, 3 V pk-pk into 1 kΩ, TTL compatible
Accuracy [1] [2] ±0.05 ppm
Ageing Rate and Stability [2] After 24-hr warmup: ≤±5x10-10/day, typical
Continuous operation: ≤±2x10-8/month typical, ≤±5x10-8 over 1 year
[1] Includes all stability effects for the 1-year calibration interval and Tcal ±5 °C temperature range applicable to all specifications.
[2] Specifications apply only if Internal Frequency Reference operation is selected. With External Frequency Reference operation
selected, the frequency of the Frequency Reference Output is locked to the signal applied to the Frequency Reference Input.
Leveled Sine Specifications at Leveling Head Output (96040A and 96270A)
Frequency
Range 1 mHz to 4 GHz
Resolution Standard: <100 MHz: 0.001 Hz (1 mHz), ≥100 MHz: 11 digits
Enhanced: 0.000 01 Hz (10 μHz)
Accuracy Internal Frequency Reference: ±0.05 ppm ± 5 μHz
External Frequency Reference: Ext Freq Ref Accuracy ±5 μHz
Amplitude 50 ΩOutput 75 ΩOutput
Output Connector Precision 50 ΩN-Series male Precision 75 ΩN-Series male
Range
-130 dBm to +24 dBm
(0.2 μV to 10 V pk-pk)
>125 MHz: +20 dBm
>1.4 GHz: +14 dBm
-130 dBm to +18 dBm
(0.13 μV to 6.3 V pk-pk)
>125 MHz: +14 dBm
>1.4 GHz: +8 dBm
Resolution 0.001 dB 0.001 dB
VSWR
≤100 MHz: ≤1.05
≤2 GHz: ≤1.1
2 GHz to 4 GHz: ≤1.0 + 0.05 x f (GHz)
≤100 MHz: ≤1.1
≤1 GHz: ≤1.2
≤2 GHz: ≤1.3

Introduction and Specifications
Specifications 1
1-9
Attenuation 50 Output 75 Output
Attenuation
10 Hz [1] to 128 MHz
Relative to +16 dBm output:
0 - 55 dB ±0.025 dB
55 - 64 dB ±0.03 dB
64 - 74 dB [1] ±0.05 dB
74 - 100 dB [1] ±0.07 dB
100 - 116 dB [1] ±0.15 dB
Relative to +10 dBm output:
0 - 49 dB ±0.02 dB
49 - 59 dB ±0.03 dB
59 - 69 dB [1] ±0.05 dB
69 - 94 dB [1] ±0.07 dB
94 - 110 dB [1] ±0.15 dB
Relative to +10 dBm output
0 - 33 dB ±0.07 dB
33 - 64 dB ±0.1 dB
64 - 100 dB [2] ±0.2 dB
100 - 110 dB [2
±0.4 dB
Cumulative and Incremental
Attenuation
To determine the attenuation
specification between any two
output levels, apply an RSS [3]
summation of the dB values
listed for each output level.
Relative to any level between +10 dBm
and -100 dBm, 10 Hz [1] to 128 MHz
+16 to +10 dBm ±0.025 dB
+10 to -39 dBm ±0.02 dB
-39 to -48 dBm ±0.03 dB
-48 to -58 dBm [1] ±0.05 dB
-58 to -84 dBm [1] ±0.07 dB
-84 to -100 dBm [1] ±0.15 dB
Relative to any level between +10 dBm and
-100 dBm, 10 Hz [2] to 128 MHz
+10 to -23 dBm ±0.07 dB
-23 to -54 dBm ±0.1 dB
-54 to -90 dBm [2 ±0.2 dB
-90 to -100 dBm [2] ±0.4 dB
[1] 50 Output attenuation specifications are typical at absolute levels of less than -48 dBm up to 20 kHz, at less than -74 dBm up to
100 kHz, and at less than -84 dBm at all frequencies.
[2] 75 Output attenuation specifications are typical at absolute levels of less than -54 dBm up to 20 kHz, at less than -80 dBm up to
100 kHz, and at less than -90 dBm at all frequencies.
Absolute Amplitude Accuracy 50 ΩOutput
Amplitude
dBm
10 Hz [1]
to
<100 kHz
100 kHz
>100 kHz
to
<10 MHz
10 MHz
to
128 MHz
>128 MHz
to
300 MHz
>300 MHz
to
1.4 GHz
>1.4 GHz
to
3 GHz
>3 GHz
to
4 GHz
>+20 to +24 ±0.03 dB ±0.03 dB ±0.05 dB ±0.05 dB Output not available
>+14 to +20 ±0.03 dB ±0.03 dB ±0.05 dB ±0.05 dB ±0.07 dB ±0.2 dB
-17 to +14 ±0.03 dB ±0.03 dB ±0.05 dB ±0.05 dB ±0.07 dB ±0.2 dB ±0.3 dB ±0.3 dB
-48 to <-17 ±0.03 dB ±0.03 dB ±0.05 dB ±0.05 dB ±0.07 dB ±0.2 dB ±0.3 dB ±0.5 dB
>-74 to <-48
Not
Specified
±0.2 dB ±0.2 dB ±0.1 dB ±0.1 dB ±0.4 dB ±0.5 dB ±0.5 dB
>-84 to -74 ±0.5 dB ±0.5 dB ±0.1 dB ±0.3 dB ±0.5 dB ±1.0 dB ±1.0 dB
>-94 to -84 ±0.5 dB ±0.5 dB ±0.3 dB ±0.5 dB ±1.0 dB ±1.0 dB Not
Specified
-130 to -94 ±0.7 dB ±1.5 dB ±1.5 dB ±1.5 dB [2]
[1] Also applies as typical accuracy at frequencies <10 Hz.
[2] Specification are typical

96000 Series
Service Manual
1-10
Amplitude Flatness relative to
100 kHz 50 ΩOutput
Amplitude
dBm
10 Hz [1]
to
<100 kHz
100 kHz
>100 kHz
to
<10 MHz
10 MHz
to
128 MHz
>128 MHz
to
300 MHz
>300 MHz
to
1.4 GHz
>1.4 GHz
to
3 GHz
>3 GHz
to
4 GHz
>+20 to +24 ±0.03 dB ±0.00 dB ±0.04 dB ±0.04 dB Output not available
>+14 to +20 ±0.03 dB ±0.00 dB ±0.04 dB ±0.04 dB ±0.06 dB ±0.2 dB
-17 to +14 ±0.03 dB ±0.00 dB ±0.04 dB ±0.04 dB ±0.06 dB ±0.2 dB ±0.3 dB ±0.3 dB
-48 to <-17 ±0.03 dB ±0.00 dB ±0.04 dB ±0.04 dB ±0.06 dB ±0.2 dB ±0.3 dB ±0.5 dB
>-74 to <-48
±0.00 dB ±0.2 dB ±0.1 dB ±0.1 dB ±0.4 dB ±0.5 dB ±0.5 dB
>-84 to -74 ±0.00 dB ±0.5 dB ±0.1 dB ±0.3 dB ±0.5 dB ±1.0 dB ±1.0 dB
>-94 to -84 ±0.00 dB ±0.5 dB ±0.3 dB ±0.5 dB ±1.0 dB ±1.0 dB
-130 to -94 Not Specified
[1] Also applies as typical accuracy at frequencies <10 Hz.
Absolute Amplitude Accuracy 75 ΩOutput
Amplitude
dBm
10 Hz [1]
to
<20 kHz
>20 kHz
to
<100 kHz
>100 kHz
to
<10 MHz
10 MHz
to
125 MHz
>125 MHz
to
300 MHz
>300 MHz
to
1.4 GHz
>1.4 GHz [2]
to
3 GHz
>3 GHz [2]
to
4 GHz
>+14 to +18 ±0.12 dB ±0.12 dB ±0.12 dB ±0.12 dB Output not available
>+8 to +14 ±0.12 dB ±0.12 dB ±0.12 dB ±0.12 dB ±0.15 dB ±0.25 dB
-23 to +8 ±0.12 dB ±0.12 dB ±0.12 dB ±0.12 dB ±0.15 dB ±0.25 dB ±0.3 dB ±0.5 dB
-54 to <-23 ±0.15 dB ±0.15 dB ±0.15 dB ±0.15 dB ±0.2 dB ±0.5 dB ±0.5 dB ±0.5 dB
>-80 to <-54
Not Specified
±0.2 dB ±0.2 dB ±0.2 dB ±0.5 dB ±0.5 dB ±0.5 dB
>-90 to -80 ±0.7 dB ±0.7 dB ±0.7 dB ±1.0 dB ±1.0 dB ±1.0 dB
>-100 to -90 ±0.7 dB ±0.7 dB ±0.7 dB ±1.0 dB ±1.0 dB Not
Specified
-120 to -100 ±1.5 dB ±1.5 dB ±1.5 dB ±1.5 dB
[1] Also applies as typical accuracy at frequencies <10 Hz.
[2] Specifications are typical for frequencies >2 GHz