Anritsu MS2665C User manual

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Document No.: M-W1335AE-15.0
ANRITSU CORPORATION
MS2665C/67C/68C
Spectrum Analyzer
Operation Manual
Vol. 1
(Basic Operating Instructions)
For safety and warning information, please read this
manual before attempting to use the equipment.
Keep this manual with the equipment.
15th Edition

ii
Safety Symbols
To prevent the risk of personal injury or loss related to equipment malfunction, Anritsu Corporation uses the following
safety symbols to indicate safety-related information. Ensure that you clearly understand the meanings of the
symbols BEFORE using the equipment. Some or all of the following symbols may be used on all Anritsu
equipment. In addition, there may be other labels attached to products that are not shown in the diagrams in this
manual.
Symbols used in manual
This indicates a very dangerous procedure that could result in serious injury or
death if not performed properly.
This indicates a hazardous procedure that could result in serious injury or death if
not performed properly.
This indicates a hazardous procedure or danger that could result in light-to-severe
injury, or loss related to equipment malfunction, if proper precautions are not taken.
Safety Symbols Used on Equipment and in Manual
The following safety symbols are used inside or on the equipment near operation locations to provide information
about safety items and operation precautions. Ensure that you clearly understand the meanings of the symbols
and take the necessary precautions BEFORE using the equipment.
This indicates a prohibited operation. The prohibited operation is indicated
symbolically in or near the barred circle.
This indicates an obligatory safety precaution. The obligatory operation is
indicated symbolically in or near the circle.
This indicates a warning or caution. The contents are indicated symbolically in or
near the triangle.
This indicates a note. The contents are described in the box.
These indicate that the marked part should be recycled.
MS2665C/67C/68C
Spectrum Analyzer
Operation Manual Vol. 1 (Basic Operating Instructions)
28 November 1997 (First Edition)
12 December 2007 (15th Edition)
Copyright © 1997-2007, ANRITSU CORPORATION.
All rights reserved. No part of this manual may be reproduced without the prior written permission of the
publisher.
The contents of this manual may be changed without prior notice.
Printed in Japan
DANGER
WARNING
CAUTION

For Safety
iii
WARNING
1. ALWAYS refer to the operation manual when working near locations
at which the alert mark shown on the left is attached. If the advice in
the operation manual is not followed there is a risk of personal injury
or reduced equipment performance. The alert mark shown on the
left may also be used with other marks and descriptions to indicate
other dangers.
2. IEC 61010 Standard
The IEC 61010 standard specifies four categories to ensure that an
instrument is used only at locations where it is safe to make
measurements. This instrument is designed for measurement
category I (CAT I). DO NOT use this instrument at locations
specified as category II, III, or IV as defined below.
Measurement category I (CAT I):
Secondary circuits of a device that is not directly connected to a
power outlet.
Measurement category II (CAT II):
Primary circuits of a device that is directly connected to a power outlet,
e.g., portable tools or home appliance.
Measurement category III (CAT III):
Primary circuits of a device (fixed equipment) to which power is
supplied directly from the distribution panel, and circuits running from
the distribution panel to power outlet.
Measurement category IV (CAT IV):
Building service-line entrance circuits, and circuits running from the
service-line entrance to the meter or primary circuit breaker
(distribution panel).
3. To ensure that the instrument is earthed, always use the supplied 3-
pin power cord, and insert the plug into an outlet with an earth
terminal. If power is supplied without earthing the equipment, there
is a risk of receiving a severe or fatal electric shock or causing
damage to the internal components.
Electric Shock

For Safety
iv
WARNING
4. This equipment cannot be repaired by the operator. DO NOT attempt
to remove the equipment covers or unit covers or to disassemble
internal components. Only qualified service personnel with a
knowledge of electrical fire and shock hazards should service this
equipment. There are high-voltage parts in this equipment presenting
a risk of severe injury or fatal electric shock to untrained personnel. In
addition, there is a risk of damage to precision components.
5. The performance-guarantee seal verifies the integrity of the equipment.
To ensure the continued integrity of the equipment, only Anritsu service
personnel, or service personnel of an Anritsu sales representative,
should break this seal to repair or calibrate the equipment. If the
performance-guarantee seal is broken by you or a third party, the
performance of the equipment cannot be guaranteed. Be careful not
to break the seal by opening the equipment or unit covers.
6. This equipment should always be positioned in the correct manner.
If the cabinet is turned on its side, etc., it will be unstable and may be
damaged if it falls over as a result of receiving a slight mechanical
shock.
Always set up the equipment in a position where the power switch
can be reached without difficulty.
7. DO NOT short the battery terminals and never attempt to disassemble
the battery or dispose of it in a fire. If the battery is damaged by any of
these actions, the battery fluid may leak. This fluid is poisonous.
DO NOT touch the battery fluid, ingest it, or get in your eyes. If it is
accidentally ingested, spit it out immediately, rinse your mouth with
water and seek medical help. If it enters your eyes accidentally, do
not rub your eyes, rinse them with clean running water and seek
medical help. If the liquid gets on your skin or clothes, wash it off
carefully and thoroughly.
8. This instrument uses a Liquid Crystal Display (LCD). DO NOT subject
the instrument to excessive force or drop it. If the LCD is subjected to
strong mechanical shock, it may break and liquid may leak.
This liquid is very caustic and poisonous.
DO NOT touch it, ingest it, or get in your eyes. If it is ingested
accidentally, spit it out immediately, rinse your mouth with water and
seek medical help. If it enters your eyes accidentally, do not rub
your eyes, rinse them with clean running water and seek medical help.
If the liquid gets on your skin or clothes, wash it off carefully and
thoroughly.
Repair
Falling Over
Battery Fluid
LCD
Calibration

For Safety
v
CAUTION
1. Always remove the mains power cable from the power outlet before
replacing blown fuses. There is a risk of electric shock if fuses are
replaced with the power cable connected. Always use new fuses of
the type and rating specified on the rear panel of the instrument.
There is a risk of fire if a fuse of a different rating is used.
T5A indicates a time-lag fuse.
2. Keep the power supply and cooling fan free of dust.
•Clean the power inlet regularly. If dust accumulates around the
power pins, there is a risk of fire.
•Keep the cooling fan clean so that the ventilation holes are not
obstructed. If the ventilation is obstructed, the cabinet may
overheat and catch fire.
3. Never input a signal of more than the indicated value between the
measured terminal and ground. Input of an excessive signal may
damage the equipment.
• Maximum DC voltage ratings:
RF Input DC 0 V
• Maximum AC power ratings:
RF Input +30 dBm
• NEVER input a >+30 dBm and >DC 0 V power to RF Input.
• Excessive power may damage the internal circuits.
Fuse Replacement
Cleaning
Check Terminal

For Safety
vi
CAUTION
This equipment uses a Poly-carbomonofluoride lithium battery to backup
the memory. This battery must be replaced by service personnel when
it has reached the end of its useful life; contact the Anritsu sales section
or your nearest representative.
Note: The battery used in this equipment has a maximum useful life of
7 years. It should be replaced before this period has elapsed.
This equipment uses memory cards as external storage media for
storing data and programs.
If this media is mishandled or becomes faulty, important data may be lost.
To prevent this chance occurrence, all important data and programs
should be backed-up.
Anritsu will not be held responsible for lost data.
Pay careful attention to the following points.
•Never remove the memory card from the instrument while it is being
accessed.
•The memory card may be damaged by static electric charges.
•The back-up battery in SRAM memory cards has a finite life.
Replace the battery periodically. For details, refer to the explanation
on the memory card later in this manual.
•Anritsu has thoroughly tested all external storage media shipped with
this instrument. Users should note that external storage media not
shipped with this instrument may not have been tested by Anritsu, thus
Anritsu cannot guarantee the performance or suitability of such media.
This instrument is designed for an industrial environment.
In a residential environment this instrument may cause radio interference
in which case the user may be required to take adequate measures.
Replacing Memory
Back-up Battery
External
Storage Media
Use in a residential
environment

vii
Equipment Certificate
Anritsu Corporation certifies that this equipment was tested before
shipment using calibrated measuring instruments with direct traceability
to public testing organizations recognized by national research
laboratories, including the National Institute of Advanced Industrial
Science and Technology, and the National Institute of Information and
Communications Technology, and was found to meet the published
specifications.
Anritsu Warranty
Anritsu Corporation will repair this equipment free-of-charge if a
malfunction occurs within one year after shipment due to a manufacturing
fault, under the condition that this warranty is void when:
•The fault is outside the scope of the warranty conditions described in
the operation manual.
•The fault is due to mishandling, misuse, or unauthorized modification
or repair of the equipment by the customer.
•The fault is due to severe usage clearly exceeding normal usage.
•The fault is due to improper or insufficient maintenance by the
customer.
•The fault is due to natural disaster including fire, flooding, earthquake,
etc.
•The fault is due to use of non-specified peripheral equipment,
peripheral parts, consumables, etc.
•The fault is due to use of a non-specified power supply or in a non-
specified installation location.
In addition, this warranty is valid only for the original equipment
purchaser. It is not transferable if the equipment is resold.
Anritsu Corporation shall assume no liability for injury or financial loss of
the customer due to the use of or a failure to be able to use this equipment.
Anritsu Corporation Contact
In the event that this equipment malfunctions, contact an Anritsu Service
and Sales office. Contact information can be found on the last page of
the printed version of this manual, and is available in a separate file on
the CD version.

viii
Notes On Export Management
This product and its manuals may require an Export License/Approval by
the Government of the product's country of origin for re-export from you
r
country.
Before re-exporting the product or manuals, please contact us to confirm
whether they are export-controlled items or not.
When you dispose of export-controlled items, the products/manuals need
to be broken/shredded so as not to be unlawfully used for military purpose.

ix
Crossed-out Wheeled Bin Symbol
Equipment marked with the Crossed-out Wheeled Bin Symbol complies
with council directive 2002/96/EC (the “WEEE Directive”) in European
Union.
For Products placed on the EU market after August 13, 2005, please
contact your local Anritsu representative at the end of the product's
useful life to arrange disposal in accordance with your initial contract and
the local law.

x
Front Panel Power Switch
To prevent malfunction caused by accidental touching, the front power switch of this
equipment turns on the power if it is pressed continuously for about one second in the
standby state. If the switch is pressed continuously for one second in the power-on state, the
equipment enters the standby state.
In the power-on state, if the power plug is removed from the outlet, then reinserted into it,
the power will not be turned on. Also, if the lines is disconnected due to momentary power
supply interruption or power failure, the power will not be turned on (enters the standby
state) even if the line is recovered.
This is because this equipment enters the standby state and prevents incorrect data from
being acquired when the line has to be disconnected and reconnected.
For example, if the sweep time is 1,000 seconds and data acquisition requires a long time,
momentary power supply interruption (power failure) might occur during measurement and
the line could be recovered automatically to power-on. In such a case, the equipment may
mistake incorrect data for correct data without recognizing the momentary power supply
interruption.
If this equipment enters the standby state due to momentary power supply interruption or
power failure, check the state of the measuring system and press the front power switch to
restore power to this equipment.
Further, if this equipment is built into a system and the system power has to be
disconnected then reconnected, the power for this equipment must also be restored by
pressing the front power switch.
Consequently, if this equipment is built into remote monitoring systems that use MODEMs,
the standby function of this equipment must be modified.

xi
ABOUT DETECTION MODE
This instrument is a spectrum analyer which uses a digital storage system. The spectrum
analyzer makes level measurements in frequency steps obtained by dividing the frequency
span by the number of measurement data points (501). This method of measurement cannot
detect the signal peak level if the spectrum of a received signal is narrower than these
frequency steps.
To resolve this problem, this instrument usually operates in positive peak detection mode
and normal detection mode. In the positive peak detection mode, the highest level within the
frequency range between the sample points can be held and traced. In the normal detection
mode, both the positive peak and the negative peak can be traced.
Positive peak detection mode should be used for almost all measurements including normal
signal level measurement, pulsed noise analysis, and others. It is impossible to measure
the signal level accurately in sample detection mode or in negative peak detection mode.
Use of sample detection mode is restricted to random noise measurement, occupied
frequency bandwidth measurement for analog communication systems, and adjacent-
channel leakage power measurement, etc.
Measurement Item
• Normal signal ..................................................................................................POS PEAK
• Random noise ..................................................................................................SAMPLE
• Pulsed noise .....................................................................................................NORMAL (POSI-NEG)
• Occupied frequency bandwidth, adjacent-channel leakage power ..........SAMPLE
(for analog communication systems)
• Occupied frequency bandwidth, adjacent-channel leakage power ..........POS PEAK or SAMPLE
(for digital communication systems)
When a detection mode is specified as one of the measurement methods, make the
measurement in the specified detection mode.

xii
CE Conformity Marking
Anritsu affixes the CE conformity marking on the following product(s) in
accordance with the Council Directive 93/68/EEC to indicate that they
conform to the EMC and LVD directive of the European Union (EU).
CE marking
1. Product Model
Model: MS2665C/MS2667C/MS2668C Spectrum
Analyzer
2. Applied Directive
EMC: Directive 2004/108/EC
LVD: Directive 2006/95/EC
3. Applied Standards
•EMC:Emission: EN 61326-1: 2006 (Class A)
Immunity:EN 61326-1: 2006 (Table 2)
Performance Criteria*
IEC 61000-4-2 (ESD) B
IEC 61000-4-3 (EMF) A
IEC 61000-4-4 (Burst) B
IEC 61000-4-5 (Surge) B
IEC 61000-4-6 (CRF) A
IEC 61000-4-8 (RPFMF) A
IEC 61000-4-11 (V dip/short) B, C
*: Performance Criteria
A: During testing, normal performance within the
specification limits.
B: During testing, temporary degradation, or loss of
function or performance which is self-recovering.
C: During testing, temporary degradation, or loss of
function or performance which requires operator
intervention or system reset occurs.

xiii
Harmonic current emissions:
EN 61000-3-2: 2006 (Class A equipment)
•LVD: EN 61010-1: 2001 (Pollution Degree 2)
4. Authorized representative
Name: Loic Metais
European Quality Manager
ANRITSU S.A. France
Address, city: 16/18 Avenue du Québec SILIC 720 Zone de
Courtaboeuf
91951 Les Ulis Cedex
Country: France

xiv
C-tick Conformity Marking
Anritsu affixes the C-tick mark on the following product(s) in accordance
with the regulation to indicate that they conform to the EMC framework
of Australia/New Zealand.
C-tick marking
1. Product Model
Model: MS2665C/MS2667C/MS2668C Spectrum
Analyzer
2. Applied Standards
EMC:Emission: EN 61326-1: 2006 (Class A equipment)

xv
Power Line Fuse Protection
For safety, Anritsu products have either one or two fuses in the AC power
lines as requested by the customer when ordering.
Single fuse: A fuse is inserted in one of the AC power lines.
Double fuse: A fuse is inserted in each of the AC power lines.
Example 1: An example of the single fuse is shown below:
Fuse Holder
Example 2: An example of the double fuse is shown below:
Fuse Holders

xvi

I
ABOUT THIS MANUAL
(1) Composition of MS2665C/67C/68C Operation Manuals
The MS2665C/67C/68C Spectrum Analyzer operation manuals of the standard type are composed of the
following three documents. Use them properly according to the usage purpose.
Composition
of
Operation Manuals
(Remote control part)
Detailed operating instruction part
Basic operating instruction part
(PTA control part)
Programming part
Vol. 1
Vol. 2
Vol. 3
Basic operating instruction part: Basic Operating Instructions: Provides information on the
MS2665C/67C/68C outline, preparation before use, panel
description, basic operation, soft-key menu and performance tests.
Detailed operating instruction part: Detailed Operating Instructions: Provides information on the detailed
panel operating instructions on MS2665C/67C/68C that expand on
the basic operation and soft-key menu in the Basic Operating
Instruction Part.
Programming part: Composed of the Remote Control Part and PTA Control Part. The
Remote Control Part provides information on RS-232C remote
control, GPIB remote control and sample programs, while the PTA
Control Part describes about PTA operation and PTL commands.

II
TABLE OF CONTENTS
For Safety ................................................................................................................. iii
ABOUT THIS MANUAL.................................................................................................... I
SECTION 1 GENERAL ............................................................................................. 1-1
Product Outline ............................................................................................................................ 1-3
Composition of Operation Manual .............................................................................................. 1-4
Equipment Configuration ............................................................................................................ 1-5
Standard configuration .................................................................................................. 1-5
Options .......................................................................................................................... 1-6
Optional Accessories and Peripherals.......................................................................................... 1-7
Specifications ............................................................................................................................... 1-9
SECTION 2 PREPARATIONS BEFORE USE.......................................................... 2-1
IInstallation Site and Environmental Conditions......................................................................... 2-3
Locations to be avoided ................................................................................................ 2-3
Fan clearance................................................................................................................. 2-3
Safety Measures ........................................................................................................................... 2-4
Power-on ....................................................................................................................... 2-4
Input level to RF Input ..................................................................................................2-5
Connector of RF Input .................................................................................................. 2-5
Installation ................................................................................................................................... 2-6
Rack mounting .............................................................................................................. 2-6
Preparations before Power-on...................................................................................................... 2-7
Protective grounding ..................................................................................................... 2-8
Replacing fuse ............................................................................................................... 2-9
Precaution for Handling Memory Card ..................................................................................... 2-11
SECTION 3 PANEL DESCRIPTION......................................................................... 3-1
Table of Front and Rear Panel Features....................................................................................... 3-3

III
SECTION 4 SOFT-KEY MENU ................................................................................. 4-1
Soft-key Menu List ...................................................................................................................... 4-4
Menu Tree .................................................................................................................................... 4-8
SECTION 5 BASIC OPERATION PROCEDURE ..................................................... 5-1
Signal Display .............................................................................................................................. 5-3
Turn the power on ......................................................................................................... 5-3
Execute automatic calibration ....................................................................................... 5-4
Set the signal to the center of the screen ....................................................................... 5-4
Enlarge and display the signal ....................................................................................... 5-5
Marker Operation ......................................................................................................................... 5-6
Check of the zone marker function
The “marker →CF” function check
“Measure” Function Check .......................................................................................................... 5-8
Screen Hard Copy ........................................................................................................................ 5-9
Initialization (Restore shipment state) ....................................................................................... 5-10
SECTION 6 PERFORMANCE TESTS ...................................................................... 6-1
Requirement for Performance Tests ............................................................................................ 6-3
Instruments Required for Performance Test ................................................................................ 6-4
Performance Test ......................................................................................................................... 6-6
Reference oscillator frequency stability ........................................................................ 6-7
Frequency readout accuracy .......................................................................................... 6-9
Frequency span readout accuracy ............................................................................... 6-14
Resolution bandwidth (RBW) and selectivity............................................................. 6-18
Sideband phase noise .................................................................................................. 6-24
Frequency measurement accuracy .............................................................................. 6-27
Amplitude display linearity ......................................................................................... 6-29
Frequency response ..................................................................................................... 6-33
Reference level accuracy............................................................................................. 6-39
Average noise level ..................................................................................................... 6-42
Second harmonic distortion......................................................................................... 6-47
Resolution bandwidth (RBW) switching uncertainty ................................................. 6-50
Input attenuator (RF ATT) switching uncertainty ...................................................... 6-53
Sweep time and time span accuracy............................................................................ 6-56
Service ..................................................................................................................................... 6-60