Page 1 08/2005 www.valuetronics.com...
Page 2 Copyright R&S FS315 Copyright Copyright © Copyright 2005 ROHDE & SCHWARZ GmbH & Co. KG Test and Measurement Division Mühldorfstraße 15 81671 München, Germany edition 08/2005 Printed in Germany. Printed on FFC bleached paper. Subject to alterations, Errors excepted. Reprints, also in extracts, are only allowed with written permission of the manufacturer. All rights reserved.
Page 3: Chapter Overview
R&S FS315 Chapter Overview Chapter Overview General Content of the Manual for Spectrum Analyzer R&S FS315 Data Sheet Safety Instructions Certificate of Quality EC Certificate of Conformity Customer Support List of Rohde & Schwarz Offices Chapter 1 Introduction Chapter 2 Control Elements Chapter 3 Putting the R&S FS315 into Operation...
Page 4: Content Of The Manual
Content of the Manual R&S FS315 Content of the Manual Operating Manual This operating manual provides information about: Introduction Technical characteristics of the instrument Putting into operation Basic operating procedures and control elements Operation via menus and remote control By way of an introduction, a typical R&S FS315 measurement is described. The operating manual also contains information about maintenance and trou- bleshooting based on the warnings and error messages issued by the instru- ment.
Page 5: Table Of Contents
R&S FS315 Table of Contents Table of Contents Chapter Overview ..........................0-3 Content of the Manual........................0-4 Operating Manual ........................0-4 Table of Contents ..........................0-5 Data Sheet ............................0-12 Frequency..........................0-12 Level ............................. 0-13 Trigger ............................. 0-15 Tracking Generator........................0-15 Inputs .............................
Page 6 Table of Contents R&S FS315 Getting Started .................... 4-43 4.1 Level and Frequency Measurements................... 4-43 4.1.1 Measurement Task ...................... 4-43 4.1.2 Measurement Procedure ..................... 4-44 4.2 Measuring the Frequency Response of a Twoport............4-45 4.2.1 Measurement Task ...................... 4-45 4.2.2 Measurement ....................... 4-45 Manual Operating Concept ................
Page 7: Table Of Contents
R&S FS315 Table of Contents Using the R&S FS315 ................. 6-70 6.1 R&S FS315 Factory Settings ....................6-70 6.2 Spectrum Analyzer ........................ 6-71 6.2.1 Selecting the Frequency Span (FREQ/SPAN Menu) ..........6-72 6.2.1.1 Entering the Center Frequency ..............6-73 6.2.1.2 Frequency-Axis Display Modes..............
Page 8 Table of Contents R&S FS315 6.2.4.5 Evaluating the Individual Pixels of a Trace ..........6-128 6.2.4.5.1 Selecting the Detector ................6-129 6.2.5 Measured-Value Display (TRACE Menu)..............6-131 6.2.5.1 Selecting the Active Trace................. 6-132 6.2.5.1.1 Activating Traces ..................6-133 6.2.5.2 Displaying the Active Trace............... 6-135 6.2.5.3 Trace Difference Function .................
Page 9 R&S FS315 Table of Contents 6.3.6.1 Displaying Module Data ................6-196 6.3.6.2 Displaying Instrument Statistics ..............6-196 6.3.6.3 Displaying System Messages ..............6-197 Remote Control/PC Software R&S FS315-K1 ......... 7-199 7.1 Applications of PC Software ....................7-199 7.2 Installation and Configuration.................... 7-200 7.2.1 Installing the PC Software ..................
Page 10 Table of Contents R&S FS315 7.6.1 File ..........................7-234 7.6.2 Function ........................7-235 7.6.2.1 FREQ Menu....................7-236 7.6.2.2 Amp Menu ....................7-237 7.6.2.3 Marker Menu ..................... 7-238 7.6.2.4 BW/Sweep Menu..................7-240 7.6.2.5 Trace Menu ....................7-241 7.6.2.6 Trigger Menu ..................... 7-242 7.6.2.7 Measure Menu...................
Page 11 R&S FS315 Data Sheet Error Messages ..................9-272 9.1 System Messages........................ 9-272 9.2 Warnings Indicating Impermissible Operating States ............. 9-273 Index ......................10-275 Operating manual, 08/2005 0-11 E-1147.1000.04 www.valuetronics.com...
Page 12: Data Sheet
Data Sheet R&S FS315 Data Sheet For the R&S FS315 a calibration cycle of 1 year is recommended. Note Frequency Frequency range 9 kHz to 3 GHz Frequency resolution 0.1 Hz Reference frequency 10 MHz, nominal Aging 2 x 10 /year Temperature drift 5°...
Page 13: Level
R&S FS315 Data Sheet Bandwidths Resolution bandwidths (-3 dB) in 1, 2, 3, 5 sequence 200 Hz to 20 MHz Bandwidth accuracy RBW ≤ 1 MHz < 1 % 2 MHz ≤ RBW ≤ 10 MHz < 5 % RBW 10 MHz, 20 MHz <...
Page 14 Data Sheet R&S FS315 Displayed average noise level 9 kHz to 3 GHz, < -110 dBm, typ. -115 dBm RF attenuator 0 dB, RBW 300 Hz, VBW 10 Hz Spurious Inherent spurious RF attenuator 0 dB, < -85 dBm input terminated Other spurious 10 MHz to 3 GHz, <...
Page 15: Trigger
R&S FS315 Data Sheet Trigger Span ≥ 1 kHz Trigger source free run, external 0 s ≤ Trigger offset ≤ 100 ms, Trigger offset Sweep time > 100 ms resolution 25 ns Span = 0 Hz Trigger source free run, external, video -100 ms ≤...
Page 16: Inputs
Data Sheet R&S FS315 Inputs RF input Connector N female (front panel) 50 Ω Input impedance VSWR RF attenuation 20 dB < 1.5 LO radiation RF attenuation 10 dB < -50 dBm External trigger input Connector N female (front panel) Voltage level Reference frequency input Connector...
Page 17: Interfaces
R&S FS315 Data Sheet Interfaces USB host device-specific command set, A plug, protocol version 1.1 remote control via supplied Windows driver (Win- dows XP/2000) USB device B plug, protocol version 1.1 Connector for external monitor 15-pin D-SUB female (VGA) Keyboard connector PS/2 female General Data Display...
Page 18: Safety Instructions
Safety Instructions R&S FS315 Safety Instructions This unit has been designed and tested in accordance with the EC Certificate Note of Conformity and has left the manufacturer’s plant in a condition fully comply- ing with safety standards. To maintain this condition and to ensure safe operation, the user must ob- serve all instructions and warnings given in this operating manual.
Page 19 R&S FS315 Safety Instructions Safety The unit may be used only in the operating conditions and positions specified instructions by the manufacturer. Unless otherwise agreed, the following applies to R&S products: IP degree of protection 2X, pollution severity 2 overvoltage category 2, only for indoor use, altitude max.
Page 20 Safety Instructions R&S FS315 Lithium batteries must not be exposed to high temperatures or fire. Keep batteries away from children. If the battery is replaced improperly, there is danger of explosion. Only re- place the battery by R&S type (see spare part list). Lithium batteries are suitable for environmentally-friendly disposal or special- ized recycling.
Page 21: Certificate Of Quality
R&S FS315 Certificate of Quality Certificate of Quality Certificate of Dear Customer, quality You have decided to buy a Rohde & Schwarz product. You are thus assured of receiving a product that is manufactured using the most modern methods available. This product was developed, manufactured and tested in compli- ance with our quality management system standards.
Page 22: Ec Certificate Of Conformity
EC Certificate of Conformity R&S FS315 EC Certificate of Conformity E-1147.1000.04 0-22 Operating manual, 08/2005 www.valuetronics.com...
Page 23: Customer Support
R&S FS315 Customer Support Customer Support Technical support – For quick, expert help with any Rohde & Schwarz equipment, contact one of our Customer Support Centers. A team of highly qualified engineers provides where and when you telephone support and will work with you to find a solution to your query on need it any aspect of the operation, programming or applications of Rohde &...
Page 24 List of Rohde & Schwarz Offices R&S FS315 List of Rohde & Schwarz Offices HEADQUARTERS Phone E-mail Germany Rohde & Schwarz GmbH & Co. KG +49 (89) 4129-0 Mühldorfstraße 15 · D-81671 München +49 (89) 4129-12164 Postfach 801469 · D-81614 München PLANTS Rohde &...
Page 25 R&S FS315 List of Rohde & Schwarz Offices Branch offices of Rohde & Schwarz Vertriebs-GmbH Zweigniederlassung Nord, Geschäftsstelle Berlin +49 (30) 34 79 48-0 Ernst-Reuter-Platz 10 · D-10587 Berlin +49 (30) 34 79 48 48 Postfach 100620 · D-10566 Berlin Zweigniederlassung Büro Bonn +49 (228) 918 90-0 Josef-Wirmer-Straße 1-3 ·...
Page 26 List of Rohde & Schwarz Offices R&S FS315 Bosnia-Herzegovina See Slovenia Brasil ROHDE & SCHWARZ DO BRASIL LTDA. +55 (11) 56 44 86 11 (general) Av. Alfredo Egidio de Souza Aranha, 177, 1° +55 (11) 56 44 86 25 (sales) andar - Santo Amaro +55 (11) 56 44 86 36 04726-170 Sao Paulo –...
Page 27 R&S FS315 List of Rohde & Schwarz Offices Czech Republic ROHDE & SCHWARZ - Praha s.r.o. +420 (2) 24 31 12 32 Hadovka Office Park +420 (2) 24 31 70 43 Evropská 2590 / 33c office@rscz.rohde-schwarz.com 16000 Praha 6 ROHDE & SCHWARZ DANMARK A/S +45 (43) 43 66 99 Denmark Ejby Industrivej 40...
Page 28 List of Rohde & Schwarz Offices R&S FS315 India ROHDE & SCHWARZ India Pvt. Ltd. +91 (40) 23 32 24 16 Hyderabad Office +91 (40) 23 32 27 32 302 & 303, Millenium Centre rsindiah@nd2.dot.net.in 6-3-1099/1100, Somajiguda Hyderabad - 500 016 ROHDE &...
Page 29 R&S FS315 List of Rohde & Schwarz Offices Korea ROHDE & SCHWARZ Korea Ltd. +82 (2) 3485 1900 83-29 Nonhyun-Dong, Kangnam-Ku +82 (2) 5474 300 Seoul 135-010 sales@rskor.rohde-schwarz.com service@rskor.rohde-schwarz.com ROHDE & SCHWARZ DANMARK A/S +371 (7) 50 23 55 Latvia Latvian Branch Office +371 (7) 50 23 60 Merkela iela 21-301...
Page 30 List of Rohde & Schwarz Offices R&S FS315 Nigeria Ferrostaal Abuja +234 (9) 413 52 51 Plot 3323, Barada Close +234 (9) 413 52 50 P.O.Box 8513, Wuse, Victoria Island fsabuja@rosecom.net Off Amazon Street Maitama, Abuja ROHDE & SCHWARZ NORGE AS +47 (23) 38 66 00 Norway Enebakkveien 302 B...
Page 31 R&S FS315 List of Rohde & Schwarz Offices Singapore Rohde & Schwarz +65 (6) 846 1872 Regional Headquarters Singapore Pte. Ltd. +65 (6) 846 1252 1 Kaki Bukit View rsca@rssg.rohde-schwarz.com #04-01/07 Techview Singapore 415 941 Specialne systemy a software, a.s. +421 (2) 65 42 24 88 Slovak Republic Svrcia ul.
Page 32: List Of Rohde & Schwarz Offices
List of Rohde & Schwarz Offices R&S FS315 Tunisia TELETEK +216 (71) 77 33 88 71, Rue Alain Savary +216 (71) 77 05 53 Residence Alain Savary (C64) 1003 Tunis ROHDE & SCHWARZ International GmbH +90 (216) 385 19 17 Turkey Liaison Office Istanbul +90 (216) 385 19 18...
Page 33: Introduction
R&S FS315 Applications for the R&S FS315 Introduction This chapter Chapter 1 describes the uses of the R&S FS315 and also provides informa- tion on the storage and transportation procedures that should be adopted for the instrument. Warranty conditions are also explained. Further Chapter 2 contains an overview of the R&S FS315’s control elements, indica- information...
Page 34: Supplied Accessories
Supplied Accessories R&S FS315 Supplied Accessories Content 1 power cord Europe 1 country specific power cord (if different from Europe) 1 manual German/English 1 USB cable 1 CD (Content: operating manual German/English, data sheet German/English PC software R&S FS315-K1, Acrobat Reader™) Warranty Warranty The General Terms and Conditions of Rohde &...
Page 35: Control Elements
R&S FS315 Front View Control Elements Front View ON/STANDBY switch RF IN, RF input connector ON/STANDBY indicator RF OUT, RF output connector BACK/SYS key Unit keys ESC/CANCEL key Rotary knob ENTER key Numerical keys Cursor keys 3 / 4 Function keys Screen Cursor keys 6 / 5 Operating manual, 08/2005...
Page 36: Rear View
Rear View R&S FS315 Rear View Input connector for external trigger AC line switch Connector for external USB host Connector for external monitor Output connector for USB device Connector for external keyboard (e. g. printer) Output of internal/external reference Power supply connector (10 MHz) AC line fuses Input for external reference (10 MHz)
Page 37: Putting The R&S Fs315 Into Operation
R&S FS315 Unpacking the R&S FS315 Putting the R&S FS315 into Operation This chapter Chapter 3 describes how to put the R&S FS315 into operation. Further Chapter 2 contains an overview of the R&S FS315‘s control elements, indica- information tors, etc. Chapter 4 “Getting started”, takes you step-by-step through a number of sim- ple measurements.
Page 38 Setting up the Instrument R&S FS315 Setting the handle Place the thumb and two fingers around the side-mounted setting lever and loosen it with a turning action. Slide the handle lengthwise while twisting it radially in steps of about 12°. Close the setting lever by pressing on the outer surface.
Page 39: Connecting The R&S Fs315 To The Ac Line
R&S FS315 Connecting the R&S FS315 to the AC Line Connecting the R&S FS315 to the AC Line The R&S FS315 meets the requirements for Safety Class I to DIN EN 61010- Caution 1/IEC 61010-1, e. g. all metal parts that can be touched or accessed without removing the enclosure are connected to the protective ground of the power supply network.
Page 40: Function Test
Function Test R&S FS315 Function Test When performing service procedures, follow the requirements of VDE 0701. Caution Only properly qualified technicians are allowed to repair the R&S FS315. The instrument does not contain any parts the operator can repair. After the R&S FS315 has been switched on ( 3-39), the green LED ON [2] Function test on the instrument’s front panel comes on.
Page 41: Connecting An External Keyboard
R&S FS315 Connecting an External Keyboard Connecting an External Keyboard Only connect the keyboard when the R&S FS315 is off or in the STANDBY Caution mode, otherwise malfunctions may occur at a later date. You can connect an external PC keyboard via the 6-pin PS/2 KEYBOARD connector [22] on the R&S FS315’s rear panel.
Page 42: Connecting A Usb Stick
Connecting a USB Stick R&S FS315 Connecting a USB Stick To ensure that the USB stick is detected by the R&S FS315, the stick must Caution be formatted in the FAT32 file system. You can connect an external USB stick to the USB device interface [17] at the rear of the R&S FS315.
Page 43: Getting Started
R&S FS315 Level and Frequency Measurements Getting Started This chapter Chapter 4 uses a number of simple measurements to illustrate how to oper- ate the R&S FS315. For the following example, the initial setting for instrument is the default set- ting (factory).
Page 44: Measurement Procedure
Level and Frequency Measurements R&S FS315 4.1.2 Measurement Procedure Introduction In this example, a signal with a frequency of 200 MHz and a level of -30 dBm is applied to the RF input [8]. The center frequency and the span are set manually.
Page 45: Measuring The Frequency Response Of A Twoport
R&S FS315 Measuring the Frequency Response of a Twoport Measuring the Frequency Response of a Twoport 4.2.1 Measurement Task If the DUT is an amplifier, the input stage of the R&S FS315 can be destroyed Caution by overloads or DC components. If there is a possibility that the limits speci- fied in the data sheet could be violated, the input must be protected with a power attenuator and/or a DC block.
Page 46 Measuring the Frequency Response of a Twoport R&S FS315 Measurement steps Perform the following steps: Reset the instrument. • Press the key. • Select in the menu bar using the cursor keys. • Press the function key. Set the center frequency (CENTER) to 1 GHz. •...
Page 47: Manual Operating Concept
R&S FS315 Making Entries from the Keypad Manual Operating Concept This chapter Chapter 5 contains an overview of the R&S FS315’s basic manual operating concept. This includes a description of the keypad, the screen layout, menu operation and how to set parameters. There is an overview of the menus and functions at the end of this chapter.
Page 48: Rotary Knob
Making Entries from the Keypad R&S FS315 5.1.3 Rotary Knob Function As well as the numerical keys and the cursor keys, the rotary knob is also used to set parameters. The rotary knob has several functions: − Incrementing (turn clockwise) or decrementing (turn counter- clockwise) numerical instrument parameters using a specified step size.
Page 49: Action Keys
R&S FS315 Making Entries from the Keypad 5.1.6 Action Keys Function The action keys are used to complete menu-guided settings. − With numerical entries, pressing this key completes an entry without closing the entry field. − With a selection field, the setting is adopted and the selection window is closed.
Page 50: Screen Display
Screen Display R&S FS315 Screen Display Introduction The screen [14] provides on-going information about events and the parame- ters associated with the selected measurement functions. The display mode for the measurement results, the lettering of the function keys and the type of menu all depend on the current settings. The screen is divided into three areas: Screen layout Diagram area...
Page 51: Diagram Area
R&S FS315 Screen Display 5.2.1 Diagram Area Displays in the The diagram area contains: diagram area Measurement diagrams and the associated scales (h) and traces (e) Measured value displays, e. g. display line (d) and markers (c) Parameter field (b) and status displays (a) Selection fields and entry fields that come up on the screen (g) Error messages that come up on the screen (f) Status display...
Page 52: Menu Area
Screen Display R&S FS315 5.2.2 Menu Area Menu display Menus for setting the measurement parameters and the measurement func- tions are displayed in the menu area. The selected menu is highlighted, e. g. FREQ/SPAN menu: 5.2.3 Function Area Displaying the When a menu is selected, the associated instrument functions are displayed current assignment in the function area.
Page 53: Calling And Changing Menus
R&S FS315 Calling and Changing Menus Calling and Changing Menus Introduction Operating the R&S FS315 is menu-guided. All the menus used to set the measurement parameters and measurement functions are displayed in the menu area. The instrument functions associated with any menu you select are displayed in the function area.
Page 54 Calling and Changing Menus R&S FS315 Calling/quitting function key in the menu. Press the submenus The MARKER 1 submenu opens and the new functions are assigned to the function keys [13]. Press the function key in the submenu. The submenu is closed and the previous functions remain assigned to the function keys [13].
Page 55: Setting Parameters
R&S FS315 Setting Parameters Setting Parameters There is a choice Parameters can be set in a number of ways: of methods Direct selection of an instrument function (function key) Selecting settings from selection fields Entering numerical parameters in entry fields The numerical keys [12], the unit keys [9], the rotary knob [11], the cursor keys [6, 7] and the action keys [4, 5] can all be used to select and enter in- strument parameters.
Page 56: Selecting Settings
Setting Parameters R&S FS315 5.4.2 Selecting Settings Introduction When you select a menu, a number of instrument functions are displayed in the function area. If certain function keys are then pressed, a selection field is displayed in the diagram area. You can then choose and activate any of the settings offered for selection.
Page 57: Entering Numerical Parameters
R&S FS315 Setting Parameters 5.4.3 Entering Numerical Parameters Introduction When you select a menu, a number of instrument functions will be displayed in the function area. If you press certain function keys, an entry field will be displayed in the diagram area. The function key you select is highlighted.
Page 58 Setting Parameters R&S FS315 Correcting an entry Press the SYS/BACK key [3] repeatedly until you have deleted the incor- rect digit (e.g. the second two in 1.224 MHz). 2 × Then enter the correct final digits. Terminating Press the ESC/CANCEL key [4] to abort the entry. entries The old value is retained.
Page 59: Entry Using The Cursor Keys And The Rotary Knob
R&S FS315 Setting Parameters 5.4.3.2 Entry using the Cursor Keys and the Rotary Knob e. g. : function key in the menu. Press the Setting the span 6-73) An entry field containing the current setting appears in the top left-hand corner.
Page 60 Setting Parameters R&S FS315 Terminating Press the ESC/CANCEL key [4] to abort the entry. entries The old value is retained. The entry window is closed. Invalid If the limit value is reached, the numeric value in the entry window remains parameter entry the same and is neither increased nor decreased.
Page 61: Overview Of All Menus And Functions
R&S FS315 Overview of all Menus and Functions Overview of all Menus and Functions 5.5.1 Spectrum Analyzer 5.5.1.1 FREQ/SPAN Menu Function key assignment Entering the center frequency 6-73) Open submenu: Display modes for the frequency axis Quitting the submenu Entering the span 6-75) Displaying the whole frequency range 6-76)
Page 62: Ampt Menu
Overview of all Menus and Functions R&S FS315 5.5.1.2 AMPT Menu Function key assignment Entering the reference level 6-84) Entering a level offset 6-85) Selecting the level display range 6-86) Selecting a unit for the level display 6-87) Setting the RF input attenuation manually 6-89) Setting the RF input attenuation automatically 6-90)
Page 63 R&S FS315 Overview of all Menus and Functions Open submenu: Accepting marker values as settings Quitting the submenu Set the center frequency to the marker frequency 6-102) Set the marker level as a reference level 6-102) Set the step size for entering the center frequency to the marker frequency 6-104) Open submenu:...
Page 64: Bw/Sweep Menu
Overview of all Menus and Functions R&S FS315 5.5.1.4 BW/SWEEP Menu Function key assignment Setting the resolution bandwidth manually 6-119) Activating automatic resolution bandwidth setting 6-119) Setting the video bandwidth manually 6-120) Activating automatic video bandwidth setting 6-120) Open submenu: Setting the RBW/VBW coupling ratio Quitting the submenu Setting the coupling ratio RBW/VBW manually...
Page 65: Trace Menu
R&S FS315 Overview of all Menus and Functions 5.5.1.5 TRACE Menu Function key assignment Open submenu: Selecting the active trace Quitting the submenu Turning on and activating Trace 1 6-133) Turning on and activating Trace 2 6-133) Trace display mode: Overwrite mode 6-135) Trace display mode: Min./Max.
Page 66: Meas Menu
Overview of all Menus and Functions R&S FS315 5.5.1.7 MEAS Menu Function key assignment Open submenu: Measure the power in the time domain (ZERO SPAN) Quitting the submenu Output the peak value within the section 6-145) Output the mean value within the section 6-145) Output the mean square within the time domain 6-145)
Page 67 R&S FS315 Overview of all Menus and Functions Open submenu: AM/FM demodulation Quitting the submenu Select the AM/FM demodulation mode 6-161) Adjust the headphone volume 6-161) Set the demodulation bandwidth 6-161) Switching off the AM/FM demodulation 6-161) Measure the third-order intercept point 6-162) Open submenu: Activating the transducer function...
Page 68: System Functions
Overview of all Menus and Functions R&S FS315 5.5.2 SYSTEM Functions 5.5.2.1 PRESET Menu Function key assignment Calls an instrument default setting 6-170) Selects an instrument default setting 6-170) 5.5.2.2 STATUS Menu Function key assignment Spectrum analyzer settings 6-171) Settings for the channel power measurement 6-173) Tracking generator settings 6-174)
Page 69: Service Menu
R&S FS315 Overview of all Menus and Functions 5.5.2.5 SERVICE Menu Function key assignment Performs a selftest 6-194) 5.5.2.6 INFO Menu Function key assignment Displays module data 6-196) Displays instrument statistics 6-196) Displays system messages 6-197) Operating manual, 08/2005 5-69 E-1147.1000.04 www.valuetronics.com...
Page 70: Using The R&S Fs315
R&S FS315 Factory Settings R&S FS315 Using the R&S FS315 This chapter All the spectrum analyzer functions and their uses are fully described in chap- ter 6. The order in which the menus are described follows that of the proce- dures for configuring and starting measurements: R&S FS315 default settings Setting measurement parameters...
Page 71: Spectrum Analyzer
R&S FS315 Spectrum Analyzer Spectrum Analyzer Introduction The R&S FS315 measures signal spectra over the selected frequency range using the selected resolution bandwidth and sweep. The time characteristic of the amplitude at the set frequency is displayed in zero span. User interface When the R&S FS315 is switched on and the selftest passed, the spectrum analyzer’s user interface is activated.
Page 72: Selecting The Frequency Span (Freq/Span Menu)
Spectrum Analyzer R&S FS315 6.2.1 Selecting the Frequency Span (FREQ/SPAN Menu) What the settings Use the FREQ/SPAN menu to specify the frequency range. are for • Selecting the menu using the 3 or 4 cursor key [6]. Select the FREQ/SPAN The menu name is highlighted and the appropriate functions are as- menu signed to the function keys [13].
Page 73: Entering The Center Frequency
R&S FS315 Spectrum Analyzer 6.2.1.1 Entering the Center Frequency If you know the frequency of the signal you want to measure, you can set the x axis of the diagram area accordingly. Enter the signal frequency as the center frequency (CENTER) and specify a SPAN ( 6-75).
Page 74: Frequency-Axis Display Modes
Spectrum Analyzer R&S FS315 6.2.1.2 Frequency-Axis Display Modes The frequency axis (x axis) can be displayed in a number of ways. Using the What the settings SPAN SETTINGS submenu, you can display the whole frequency range, are for zoom in on subranges of the frequency axis or project the diagram area onto the whole of the screen, if and when you require.
Page 75: Entering The Span
R&S FS315 Spectrum Analyzer 6.2.1.2.1 Entering the Span If you know the frequency of the signal you want to measure, you can set the SPAN Setting the span Press the function key in the menu. An entry field containing the current setting is displayed in the top left- hand corner.
Page 76: Displaying The Whole Frequency Range
Spectrum Analyzer R&S FS315 6.2.1.2.2 Displaying the Whole Frequency Range If you do not know the frequency of the signal to be investigated, you can display the R&S FS315’s whole frequency range along the x axis of the dia- gram area. You can then systematically reduce the span to the appropriate size ( 6-75).
Page 77: Switching Over To The Zero Span
R&S FS315 Spectrum Analyzer 6.2.1.2.3 Switching over to the ZERO SPAN The amplitude of a particular signal component in the frequency spectrum can be displayed as a function of time. To activate this mode, enter the fre- quency of the signal component as the center frequency. You can then define the x axis to be the time axis.
Page 78: Zoom Functions
Spectrum Analyzer R&S FS315 6.2.1.2.4 ZOOM Functions If you want to increase or decrease the size of the screen window to analyze traces, you can zoom onto sections of the span or fill the whole screen with the current screen window. Reducing •...
Page 79: Entering The Start Frequency And The Stop Frequency
R&S FS315 Spectrum Analyzer 6.2.1.3 Entering the Start Frequency and the Stop Frequency If you want to analyze a specific frequency range, you can enter a start fre- quency and a stop frequency. The frequency range is shown along the x axis of the diagram area.
Page 80: Entering The Step Width Of The Center Frequency
Spectrum Analyzer R&S FS315 6.2.1.4 Entering the Step Width of the Center Frequency Using the CF STEP SIZE submenu, you can set any step size of the rotary What the settings knob you want or have the R&S FS315 set a step size that is a function of the are for measurement parameters.
Page 81: Setting The Step Size
R&S FS315 Spectrum Analyzer 6.2.1.4.1 Setting the Step Size If you want to examine the frequency spectrum at certain intervals, you can Setting the step size enter the value of your choice for the step size of the rotary knob. manually Press the function key in the...
Page 82: Activating Signal Tracking
Spectrum Analyzer R&S FS315 6.2.1.5 Activating Signal Tracking If the frequency of the signal being analyzed is continually varying, you can use this function to obtain a display that appears to be stationary. The power of signals of this kind can then be measured over long periods. When signal tracking is selected, the center frequency of the R&S FS315 is continually set to the frequency of the signal with most power.
Page 83: Setting The Level Axis And The Rf Input (Ampt Menu)
R&S FS315 Spectrum Analyzer 6.2.2 Setting the Level Axis and the RF Input (AMPT Menu) What the settings From the AMPT menu, you can define the y axis of the measurement dia- are for gram as the level axis. You can also specify the attenuation of the RF input. •...
Page 84: Entering The Reference Level
Spectrum Analyzer R&S FS315 6.2.2.1 Entering the Reference Level The upper diagram limit is specified with the reference level. REF LEVEL The currently activated unit is used as the unit for reference level entries ( Note 6-87). The default setting is “dBm”. Entering the Press the function key in the...
Page 85: Entering A Level Offset
R&S FS315 Spectrum Analyzer 6.2.2.2 Entering a Level Offset If you have connected external attenuators or amplifiers between the DUT and the RF input, you can enter a level offset to adjust the level display. The level offset is added to the reference level. REF LEVEL + REF LEVEL OFFSET Entering a Press the...
Page 86: Selecting The Level Display Range
Spectrum Analyzer R&S FS315 6.2.2.3 Selecting the Level Display Range Use the level display range to define the “visible” level range and set the measurement diagram scale. Levels can be displayed using either logarithmic or linear scales. The lettering of the grid lines is automatically adapted. 8 dB 1 dB/div.
Page 87: Selecting The Level Display Unit
R&S FS315 Spectrum Analyzer 6.2.2.4 Selecting the Level Display Unit Note function key is only available for activated transducer factors if the unit of the antenna factors is dB. To make it easier to analyze results, you can display levels in dBm, dBmV, dBµV, dBµA, mV and mW.
Page 88 Spectrum Analyzer R&S FS315 Log display/RANGE in xV, xA or xW (The letter x is a wildcard character for the letters m or µ.) If a mV or mW has been selected for UNIT, only the reference level is dis- played in the selected unit.
Page 89: Setting The Rf Input Attenuation Manually
R&S FS315 Spectrum Analyzer 6.2.2.5 Setting the RF Input Attenuation Manually In the default setting, the input attenuation is coupled to the reference level. In most cases, this is the setting that will be used because it prevents the input stages from being overdriven and so, consequently, any incorrect measure- ments.
Page 90: Setting The Rf Input Attenuation Automatically
Spectrum Analyzer R&S FS315 6.2.2.6 Setting the RF Input Attenuation Automatically The input attenuation should be set automatically to prevent the R&S FS315’s input mixer from being overloaded. There are three RF input modes you can choose from (coupling between reference level and input attenuation) to op- timize measurements: NORMAL Normal setting for measurements...
Page 91 R&S FS315 Spectrum Analyzer Activating the auto- function key in the menu. Press the matic input attenuation A selection field containing the available settings is displayed. The de- setting mode fault setting is NORMAL. Using the rotary knob [11] select a criterion for autosetting the input attenuation.
Page 92: Selecting The Setting High Sensitivity
Spectrum Analyzer R&S FS315 6.2.2.7 Selecting the Setting High Sensitivity By setting SET HIGH SENS, you can change several settings in the device in order to increase the input and measurement sensitivity of the analyzer in comparison to the normal setting. This function is helpful when you want to measure weak antenna signals with the analyzer.
Page 93: Signal Analysis Using Marker Functions (Mkr Menu)
R&S FS315 Spectrum Analyzer 6.2.3 Signal Analysis using Marker Functions (MKR Menu) What the settings Using the MKR menu, you can position markers on any point on the trace to are for read off any levels or level differences of interest. The measured values indi- cated by the markers (marker values) are displayed in the parameter field ( 5-51).
Page 94: Activating Marker 1
Spectrum Analyzer R&S FS315 6.2.3.1 Activating Marker 1 From the MARKER 1 submenu, you can activate a marker and position it on What the settings the trace. All the current level and frequency values (marker values) are dis- are for played.
Page 95: Reading Off Measured Values With Marker 1
R&S FS315 Spectrum Analyzer 6.2.3.1.1 Reading off Measured Values with Marker 1 You can position marker 1 on the trace to read off specific levels and fre- quencies (marker values). Activating marker 1 Press the function key in the submenu. and placing it on the trace maximum Marker 1 is activated and placed on the current trace maximum.
Page 96 Spectrum Analyzer R&S FS315 Moving marker 1 Enter a new value for the marker frequency using the numerical keys [12], rotary knob [11] or cursor keys [7]. The permissible entry range is: to any position – Span/2 ≤ f ≤ f + Span/2 Center Marker...
Page 97: Frequency Measurements Using The Frequency Counter
R&S FS315 Spectrum Analyzer 6.2.3.1.2 Frequency Measurements using the Frequency Counter The normal marker indicates the frequency represented by the pixel on which it is placed. The measurement uncertainty is relatively large because the number of pixels is limited to 250. When a measurement is made with the frequency counter, the sweep is stopped at the frequency indicated by marker 1, the frequency is counted using the required resolution (10 Hz, 1 Hz) and then the sweep is restarted.
Page 98: Activating Marker 2
Spectrum Analyzer R&S FS315 6.2.3.2 Activating Marker 2 From the MARKER 2 submenu, you can activate a second marker and posi- What the settings tion it on the trace. Marker 2 can be used either as a normal marker (NORM) are for or as a delta marker (DELTA).
Page 99: Reading Off Measured Values With Marker 2
R&S FS315 Spectrum Analyzer 6.2.3.2.1 Reading off Measured Values with Marker 2 To read off specific levels, you can activate marker 2 as a normal marker (in addition to marker 1) and position it on the trace. The current level and fre- quency can be displayed in this way (M2 marker values).
Page 100: Reading Off Level Differences
Spectrum Analyzer R&S FS315 6.2.3.2.2 Reading off Level Differences You can define marker 2 as a delta marker to read off level differences from the trace. The level difference between marker 2 and a reference point is displayed. Marker 1 ( 6-94) or reference values that have been set manually 6-114) can be used as reference points.
Page 101: Accepting Marker Values As Settings
R&S FS315 Spectrum Analyzer 6.2.3.3 Accepting Marker Values as Settings From the MKR> submenu, you can accept the marker values of the active What the settings marker as settings for level, frequency or frequency steps. are for The step size used to enter the center frequency with the help of the rotary knob can also be the marker frequency.
Page 102: Moving Trace Sections In The Measurement Diagram
Spectrum Analyzer R&S FS315 6.2.3.3.1 Moving Trace Sections in the Measurement Diagram If you want to analyze a section of the trace more closely, you can change ist location within the measurement diagram using the active marker. The marker frequency becomes the center frequency and the marker level be- comes the upper diagram boundary.
Page 103 R&S FS315 Spectrum Analyzer Setting the Press the function key in the submenu. reference level to the marker level The current marker level is set as the reference level ( 6-84). The trace is shifted vertically until the marker level forms the upper limit of the measurement diagram.
Page 104: Setting The Step Size To The Marker Frequency
Spectrum Analyzer R&S FS315 6.2.3.3.2 Setting the Step Size to the Marker Frequency If you set the step size to the marker frequency, you will find that you can quickly jump back to the start frequency when you are stepping through the frequency spectrum with the help of the rotary knob.
Page 105: Marker Measurement Functions
R&S FS315 Spectrum Analyzer 6.2.3.4 Marker Measurement Functions From the MKR FCTN submenu, using the markers, you can select certain What the settings spectral components of the input signal to measure the noise power density are for and the signal bandwidth. Note function key is available only when the markers are turned on.
Page 106: Measuring The Noise Power Density
Spectrum Analyzer R&S FS315 6.2.3.4.1 Measuring the Noise Power Density The R&S FS315 allows you to measure the noise power density at the active marker position. Measuring noise Turn on the markers ( 6-94, 6-98). power density Position the activated marker ( 6-95, 6-99) as desired.
Page 107 R&S FS315 Spectrum Analyzer Additional meas- The following additional settings must be made to ensure that the noise power density measurement returns correct values: urement settings Detector Sample or RMS ( 6-129) Video bandwidth: ≤ 0.1 x resolution bandwidth for sample detector ≥...
Page 108: Measuring The Filter Or Signal Bandwidth
Spectrum Analyzer R&S FS315 6.2.3.4.2 Measuring the Filter or Signal Bandwidth If you want to measure the bandwidth of a certain signal spectrum shown in the measurement diagram, you can do this with the N dB DOWN function. Two lines one of which is n dB down on the active reference marker are dis- played on the screen [14].
Page 109 R&S FS315 Spectrum Analyzer Terminating the • Press the function key in the submenu. measurement The signal or filter bandwidth measurement is terminated and the tempo- rary markers T1 and T2 disappear from the screen. Operating manual, 08/2005 6-109 E-1147.1000.04 www.valuetronics.com...
Page 110: Activating A Display Line
Spectrum Analyzer R&S FS315 6.2.3.5 Activating a Display Line If you want to observe whether a signal exceeds or falls below a certain level you can activate a horizontal display line in the measurement diagram and adjust its position. Activating the Press the function key in the menu.
Page 111: Setting The Search Criterion Of Functions Next Peak Left/Right
R&S FS315 Spectrum Analyzer 6.2.3.6 Setting the Search Criterion of Functions NEXT PEAK LEFT/RIGHT From the MARKER SETTINGS submenu, you can set the search criterion of What the settings functions NEXT PEAK LEFT/RIGHT. The PEAK EXCURSION function key are for enables –...
Page 112: Entering The Peak Excursion
Spectrum Analyzer R&S FS315 6.2.3.6.1 Entering the Peak Excursion If NEXT PEAK LEFT or NEXT PEAK RIGHT is selected, these functions search for the next relative maximum left or right of the current marker posi- tion irrespective of the current signal amplitude. When the signal level de- creases for a definite amount, the peak excursion, to either side of the maxi- mum a relative maximum is given.
Page 113 R&S FS315 Spectrum Analyzer 50 dB With this setting, NEXT PEAK LEFT and NEXT PEAK RIGHT will not find any peak excursion signal, as the signal level does not decrease by more than 48 dB to either side of any signal. Order of signals detected: PEAK: signal 3...
Page 114: Setting Reference Points For Level-Difference Measurements
Spectrum Analyzer R&S FS315 6.2.3.7 Setting Reference Points for Level-Difference Measurements From the REF FIXED submenu, you can define any reference point within the What the settings R&S FS315’s measurement range. You can use this point as a fixed refer- are for ence for level-difference measurements using the delta marker ( 6-100).
Page 115: Manual Entry Of Reference Points
R&S FS315 Spectrum Analyzer 6.2.3.7.1 Manual Entry of Reference Points There are two methods you can use to find level differences on the trace. The first method is to define a reference point on the trace using marker 1, whereby the entered level values must be within a specific range ( 6-94).
Page 116 Spectrum Analyzer R&S FS315 Entering a reference 3a) Frequency-domain display mode (SPAN > 0, 6-72): point frequency • Press the function key in the submenu. An entry field containing the current setting (frozen marker frequency)is displayed in the top left-hand corner. •...
Page 117 R&S FS315 Spectrum Analyzer Activating M1 • Press the function key in the submenu. marker values as reference points The reference values (R) disappear from the screen and the M1 marker values are again activated. Marker 1 is positioned on the last reference point frequency on the trace and can again be moved, e.
Page 118: Setting The Bandwidths And The Sweep Time (Bw/Sweep Menu)
Spectrum Analyzer R&S FS315 6.2.4 Setting the Bandwidths and the Sweep Time (BW/SWEEP Menu) What the settings You can set the resolution bandwidth (RBW), the video bandwidth (VBW) and are for the sweep time using the BW/SWEEP menu. The parameters determine the measurement procedure and can be coupled as a function of the SPAN or set independently.
Page 119: Setting The Resolution Bandwidth
R&S FS315 Spectrum Analyzer 6.2.4.1 Setting the Resolution Bandwidth The span and the resolution bandwidth can be set independently. In the de- fault setting, however, these two parameters are coupled to make operating the instrument easier. This setting is recommended for many applications because operating errors are prevented.
Page 120: Setting The Video Bandwidth
Spectrum Analyzer R&S FS315 6.2.4.2 Setting the Video Bandwidth You can set a variety of video bandwidths to smooth the trace. You can set video bandwidths from 10 Hz to 20 MHz in a 1, 2, 3, 5, 10 sequence on the R&S FS315.
Page 121: Rbw, Vbw And Span Coupling Ratio
R&S FS315 Spectrum Analyzer 6.2.4.3 RBW, VBW and SPAN Coupling Ratio You can set the coupling ratio between the video bandwidth, the resolution What the settings bandwidth and the frequency display span using the COUPLING RATIO sub- are for menu. Selecting the •...
Page 122: Changing The Coupling Ratio Rbw/Vbw
Spectrum Analyzer R&S FS315 6.2.4.3.1 Changing the Coupling Ratio RBW/VBW You can change the automatic coupling between resolution bandwidth (RBW) and the video bandwidth (VBW) by means of the RBW/VBW MANUAL function. This makes it possible to increase the display accuracy of the analyzer in comparison to the default setting (RBW/VBW AUTO).
Page 123: Switching Over The Coupling Rbw/Span To Low Noise
R&S FS315 Spectrum Analyzer 6.2.4.3.2 Switching Over the Coupling RBW/SPAN to Low Noise You can change the automatic coupling between frequency display span (SPAN) and resolution bandwidth (RBW) by means of the RBW/SPAN LOW NOISE function. This makes it possible to increase the measurement sensitivity of the analyzer in comparison to the normal setting.
Page 124: Setting The Sweep
Spectrum Analyzer R&S FS315 6.2.4.4 Setting the Sweep You can select the type of sweep and the sweep time from the SWEEP sub- What the settings menu. are for Selecting the • function key in the menu. Press the SWEEP submenu The submenu opens and the appropriate functions are assigned to the function keys [13].
Page 125: Selecting The Frequency Sweep
R&S FS315 Spectrum Analyzer 6.2.4.4.1 Selecting the Frequency Sweep Frequency sweep is the process where the resolution filter covers a defined frequency range. Sweeps may be performed continuously (CONT SWEEP) or once (SIN- GLE SWEEP). Starting a • function key in the submenu.
Page 126: Setting The Sweep Time
Spectrum Analyzer R&S FS315 6.2.4.4.2 Setting the Sweep Time In normal span (SPAN > 0 Hz) the sweep time is the time taken by the resolu- tion filter set to a specific bandwidth (RBW) to sweep a particular frequency range or span. In the default setting, the sweep time is coupled to the span (SPAN), the resolution bandwidth (RBW) and the video filter (VBW).
Page 127 R&S FS315 Spectrum Analyzer Activating The automatic sweep time setting is only available in the normal span mode. automatic sweep • Press the function key in the submenu. time setting The sweep time is coupled to the span, the resolution bandwidth (RBW) and the video bandwidth (VBW).
Page 128: Evaluating The Individual Pixels Of A Trace
Spectrum Analyzer R&S FS315 6.2.4.5 Evaluating the Individual Pixels of a Trace The detectors are used to reduce the number of sampled level measure- What the settings ments to be displayed on the screen to 250 pixels. A total of six different de- are for tectors are available in the R&S FS315.
Page 129: Selecting The Detector
R&S FS315 Spectrum Analyzer 6.2.4.5.1 Selecting the Detector MAX/MIN PEAK The peak detectors determine the largest of all positive (MAX PEAK) or the smallest of all negative (MIN PEAK) peak values of the measured levels for the individual frequencies, which are represented by one of the 250 pixels.
Page 130 Spectrum Analyzer R&S FS315 Selecting detector When the R&S FS315 is switched on, trace 1 is active and is displayed in the CLEAR/WRITE display mode. The MAX PEAK detector is active (default setting). Press the appropriate function key in the menu.
Page 131: Measured-Value Display (Trace Menu)
R&S FS315 Spectrum Analyzer 6.2.5 Measured-Value Display (TRACE Menu) What the settings Using the TRACE menu, you can apply various display modes to the input- are for signal results. Two traces (Trace 1, Trace 2) are provided for this purpose. •...
Page 132: Selecting The Active Trace
Spectrum Analyzer R&S FS315 6.2.5.1 Selecting the Active Trace Via the SELECT TRACE submenu, you can activate a second trace and se- What the settings lect the current trace (Trace 1, Trace 2) to which all the following settings will are for be applied.
Page 133: Activating Traces
R&S FS315 Spectrum Analyzer 6.2.5.1.1 Activating Traces The measured values for the input signal can be displayed using two different traces (Trace 1 and Trace 2). However, only one trace is active and can be used at any one time. The other trace is frozen and displayed. This means that the two traces can be compared.
Page 134 Spectrum Analyzer R&S FS315 Turning off Press the function key in the submenu. Trace 2 Trace 2 is now active. Press the function key in the menu. Trace 2 is blanked out. Press the function key in the submenu. Trace 1 is activated and Trace 2 is turned off. The current values are displayed in the trace colour.
Page 135: Displaying The Active Trace
R&S FS315 Spectrum Analyzer 6.2.5.2 Displaying the Active Trace You can select the following settings for displaying the active trace: CLEAR/WRITE Overwrites the trace on every frequency sweep. HOLD Displays the minimum/maximum over several sweeps. This function is used to find the minimum/maximum value of a signal over several frequency sweeps ( CONT.
Page 136 Spectrum Analyzer R&S FS315 Displaying signal Press the function key in the menu. minimum/maximum A selection field containing the available settings is displayed. The de- fault setting is Min Hold. Select a settings for displaying the active trace with rotary knob [11]. Press the ENTER key [5] to close the selection field.
Page 137 R&S FS315 Spectrum Analyzer The new setting is saved. Averaging is started and the result is dis- played. The current display mode AVG is shown in the top left of the diagram area. Freezing traces Press the function key in the menu.
Page 138: Trace Difference Function
Spectrum Analyzer R&S FS315 6.2.5.3 Trace Difference Function Note function key is available only if both traces are turned on ( 132). What the settings You can activate the difference function for two traces (Trace 1, Trace 2) from are for the MATH submenu and use this function to analyze the input signal.
Page 139: Activating The Trace Difference Function
R&S FS315 Spectrum Analyzer 6.2.5.3.1 Activating the Trace Difference Function You can use the R&S FS315’s MATH function to directly determine differ- ences between signals by forming the difference of two traces. The new ref- erence for the difference trace is in the center of the measurement diagram (50 %).
Page 140: Triggering Measurements (Trig Menu)
Spectrum Analyzer R&S FS315 6.2.6 Triggering Measurements (TRIG Menu) What the settings From the TRIG menu, you can select a variety of trigger sources. You can set are for the trigger edge and the measurement time for external trigger signals (TTL). •...
Page 141: Internal Trigger Sources
R&S FS315 Spectrum Analyzer 6.2.6.1 Internal Trigger Sources Depending on the measurement, you can use a variety of criteria for trigger- ing measurements in the frequency domain (SPAN > 0) or in the time domain (ZERO SPAN). Free-running triggering Triggering by the display level (only in the time domain, ZERO SPAN) Free-running Suitable for measurements on stationary signals where a time reference is triggering...
Page 142: External Trigger Sources
Spectrum Analyzer R&S FS315 6.2.6.2 External Trigger Sources For certain measurements, you can use an external TTL signal (squarewave signal) as a trigger. The trigger period is user-selectable. The R&S FS315 allows you to set triggering on a rising or on a falling edge of the squarewave. External triggering Connect the external signal source to the R&S FS315’s input connector [15].
Page 143: Measurement Functions (Meas Menu)
R&S FS315 Spectrum Analyzer 6.2.7 Measurement Functions (MEAS Menu) What the settings From the MEAS menu, you can select the following settings: are for Power measurement in the time domain Channel power measurement and measurement of the occupied band- width Tracking generator settings AM/FM demodulator settings Selection of transducer factors...
Page 144: Measuring The Power In The Time Domain
Spectrum Analyzer R&S FS315 6.2.7.1 Measuring the Power in the Time Domain From the TIME DOMAIN PWR submenu, you can determine the trace section What the settings for which the power measurement is to be performed. You can measure ei- are for ther the mean square (RMS), arithmetic mean (MEAN) or maximum value (PEAK).
Page 145: Measuring The Power
R&S FS315 Spectrum Analyzer 6.2.7.1.1 Measuring the Power By using the "Time Domain Power" measurement function, the R&S FS315 determines in the time domain (ZERO SPAN) the power of the signal by inte- grating the pixels within the selected section. This allows you to measure the power of TDMA signals, for example, during the transmission phase or during the mute phase.
Page 146 Spectrum Analyzer R&S FS315 Press the function key in the submenu. The mean square is measured within the limit lines T1 and T2 and dis- played in the measurement diagram (RMS:). In the default setting, these are the left and the right limit lines of the measurement diagram. Changing the Press the function key in the...
Page 147 R&S FS315 Spectrum Analyzer Press the function key in the submenu. An entry field containing the current setting of the limit line is displayed in the top left-hand corner. The default setting is the right side of the dia- gram. Enter a new value ( 5-57).
Page 148: Measuring The Channel Power
Spectrum Analyzer R&S FS315 6.2.7.2 Measuring the Channel Power From the CHANNEL POWER submenu, you can measure the channel power What the settings for a predefined channel bandwidth or determine the occupied bandwidth are for (OBW) Selecting the • function key in the menu.
Page 149: Measuring The Channel Power
R&S FS315 Spectrum Analyzer 6.2.7.2.1 Measuring the Channel Power When the channel power is measured, the displayed level values are integrated within a predefined bandwidth. In combination with the RMS detector, this allows the rms value of a transmit signal to be determined. The channel power is defined by the set center frequency, the set channel bandwidth and the trace detector.
Page 150 Spectrum Analyzer R&S FS315 Correct power meas- To ensure that power measurements are performed correctly (especially in urement of noise the case of noise signals) and, therefore, that the effective power can be signals measured, it is important to make the following settings: 6-119 <<...
Page 151: Measuring The Occupied Bandwidth
R&S FS315 Spectrum Analyzer 6.2.7.2.2 Measuring the Occupied Bandwidth An important characteristic of a modulated signal is its occupied bandwidth. In a radio transmission system, for example, the occupied bandwidth must remain within specific limits to ensure unimpaired transmission in adjacent channels. The occupied bandwidth is defined as the bandwidth in which 99% of the entire power of a transmitter is contained.
Page 152: Configuring The Built-In Generator
Spectrum Analyzer R&S FS315 6.2.7.3 Configuring the Built-In Generator From the TRACKING GEN submenu, you can enter the generator operating What the settings mode, the frequency and output level, the frequency offset for frequency- are for converting measurements and a level offset. The configuration options for the generator differ depending on the selected operating mode.
Page 153 R&S FS315 Spectrum Analyzer Selecting the • Press the function key in the menu. TRACKING GEN submenu The submenu opens and the appropriate functions are assigned to the function keys [13]. Function key assignment Quitting the submenu Enter the output level 6-159) Enter the frequency or 6-159)
Page 154: Selecting The Operating Mode
Spectrum Analyzer R&S FS315 6.2.7.3.1 Selecting the Operating Mode The “Tracking Generator” operating mode is not available in zero-span mode. Note The generator is switched off when in its initial state. You can select two dif- ferent operating modes: Tracking Generator The generator operates at the same frequency as the analyzer.
Page 155 R&S FS315 Spectrum Analyzer Performing trans- The transmission measurement measures the transmission characteristics of mission measure- a twoport. The built-in tracking generator is used as the signal source. It is ment connected to the input connector of the DUT. The input of the R&S FS315 is supplied from the output of the DUT.
Page 156 Spectrum Analyzer R&S FS315 Performing reflec- The reflection measurement is used to determine the percentage of power versus frequency that is reflected by a DUT port. An external bridge that is tion measurement connected between the tracking generator output and the analyzer input is necessary for the measurement.
Page 157 R&S FS315 Spectrum Analyzer Entering frequency Press the function key in the submenu. offset An entry field containing the current setting of the limit line is displayed in the top left-hand corner. The default setting is 0 Hz. Enter a new value ( 5-57).
Page 158 Spectrum Analyzer R&S FS315 Setting reference To display the gain of active components, you must shift the reference posi- position tion of the trace. Press the function key in the submenu. An entry field containing the current setting of the limit line is displayed in the top left-hand corner.
Page 159: Freq Fixed" Mode
R&S FS315 Spectrum Analyzer 6.2.7.3.3 “Freq Fixed” Mode In “Freq Fixed” mode, the generator operates independently of the spectrum analyzer. You can freely select the frequency and level of the generator. Entering the level Press the function key in the submenu.
Page 160: Am/Fm Demodulation
Spectrum Analyzer R&S FS315 6.2.7.4 AM/FM Demodulation From the DEMOD submenu, you can demodulate AM or FM signals and What the settings identify them using connected headphones. are for Selecting the Switch the R&S FS315 to the time-domain mode (ZERO SPAN, 6-75).
Page 161: Demodulating Signals
R&S FS315 Spectrum Analyzer 6.2.7.4.1 Demodulating Signals AM/FM demodulator of the R&S FS315 to demodulate the You can use the input signal (AM, FM) and to monitor it using headphones connected to the socket [25]. You can limit the signal bandwidth of the signal to be demodulated by select- ing a resolution bandwidth.
Page 162: Measuring The Third-Order Intercept Point
Spectrum Analyzer R&S FS315 6.2.7.5 Measuring the Third-Order Intercept Point If two signals with different frequencies are applied to a DUT with non-linear characteristic, intermodulation products occur at the output. Third-order mix- ture products are of particular importance since they are close to the useful signals.
Page 163 R&S FS315 Spectrum Analyzer Activating the Adjust the frequency span ( 6-75). measurement The intercept point can only be calculated correctly if the input signals have approximately the same level (± 1.5 dB) and the intermodulation products are within the selected frequency span. Adjust the reference level ( 6-84).
Page 164: Activating The Transducer Function
Spectrum Analyzer R&S FS315 6.2.7.6 Activating the Transducer Function From the TRANSDUCER submenu, you can load, save, activate or deacti- What the settings vate transducer sets created using the PC software R&S FS315-K1 ( are for 258). Selecting the • function key in the menu.
Page 165: Using Transducer Sets
R&S FS315 Spectrum Analyzer 6.2.7.6.1 Using Transducer Sets You can load a transducer set from a USB stick to the R&S FS315 and save it in the internal memory. To do this, you must connect the USB stick to the USB device connector [17] at the rear of the instrument.
Page 166 Spectrum Analyzer R&S FS315 Saving transducer Press the function key in the submenu. set to internal mem- A selection field containing the available transducer sets on the USB stick is displayed. Select a transducer set with rotary knob [11]. Press the ENTER key [5] to close the selection field. The transducer set is saved to the internal memory.
Page 167: System Functions (Back/Sys Key)
R&S FS315 SYSTEM Functions (BACK/SYS Key) SYSTEM Functions (BACK/SYS Key) Introduction The R&S FS315 has system and service functions as well as measurement functions. All current settings can be called so that they can be viewed at a glance, and saved for use at a later date, a selftest can be run on the R&S FS315 and the system settings configured.
Page 168 SYSTEM Functions (BACK/SYS Key) R&S FS315 Menus for system and service functions Selects and calls the instrument‘s default setting 6-169 Displays the current instrument settings 6-171) Saves and loads user-defined settings 6-177) System settings 6-184) Service functions 6-194) System information 6-195) E-1147.1000.04 6-168...
Page 169: Instrument Default Setting (Menu Preset)
R&S FS315 SYSTEM Functions (BACK/SYS Key) 6.3.1 Instrument Default Setting (Menu PRESET) What the settings From the PRESET menu, you can specify a user-defined instrument setting are for as the instrument default setting and directly call it. Selecting the Press the BACK/SYS key [3]. PRESET menu with the 3 or 4 cursor key [6].
Page 170: Selecting And Calling The Instrument Default Setting
SYSTEM Functions (BACK/SYS Key) R&S FS315 6.3.1.1 Selecting and Calling the Instrument Default Setting When you switch on the R&S FS315, those settings that were valid when the R&S FS315 was last switched off are restored. The R&S FS315 also lets you save and call user-defined instrument settings. If you frequently use one of these settings and want to load it quickly, you can define this setting to be the PRESET (default setting) and call it directly at any time.
Page 171: Displaying The Current Instrument Setting (Status Menu)
R&S FS315 SYSTEM Functions (BACK/SYS Key) 6.3.2 Displaying the Current Instrument Setting (STATUS Menu) What the settings From the STATUS menu, you can display an overview of the principal current are for instrument settings. Selecting the Press the BACK/SYS key [3]. STATUS menu with the 3 or 4 cursor key [6].
Page 172: Spectrum Analyzer Settings
SYSTEM Functions (BACK/SYS Key) R&S FS315 6.3.2.1 Spectrum Analyzer Settings Application If you wish to see all the spectrum analyzer settings at a glance, you can have the parameters clearly displayed for you together with their current set- tings. Displaying •...
Page 173: Settings For The Channel Power Measurement
R&S FS315 SYSTEM Functions (BACK/SYS Key) 6.3.2.2 Settings for the Channel Power Measurement If you wish to see all settings for measuring the channel power at a glance, Application you can have the parameters clearly displayed for you together with their current settings.
Page 174: Tracking Generator Settings
SYSTEM Functions (BACK/SYS Key) R&S FS315 6.3.2.3 Tracking Generator Settings If you wish to see all the tracking generator settings at a glance, you can Application have the parameters clearly displayed for you together with their current set- tings. Displaying •...
Page 175: Demodulation Settings
R&S FS315 SYSTEM Functions (BACK/SYS Key) 6.3.2.4 Demodulation Settings If you wish to see all the settings for demodulation at a glance, you can have Application the parameters clearly displayed for you together with their current settings. Displaying • In the menu press the function key.
Page 176: Settings For Transducer Sets
SYSTEM Functions (BACK/SYS Key) R&S FS315 6.3.2.5 Settings for Transducer Sets If you wish to see all settings for transducer sets at a glance, you can have Application the parameters clearly displayed for you together with their current settings. Displaying •...
Page 177: User-Defined Settings (File Menu)
R&S FS315 SYSTEM Functions (BACK/SYS Key) 6.3.3 User-Defined Settings (FILE Menu) What the settings You can save user-defined settings and load them when required from the are for FILE menu. You can also print out a screenshot. Selecting the Press the BACK/SYS key [3]. FILE menu menu with the 3 or 4 cursor key [6].
Page 178: Saving And Loading User-Defined Settings
SYSTEM Functions (BACK/SYS Key) R&S FS315 6.3.3.1 Saving and Loading User-Defined Settings When you switch on the R&S FS315, those settings that were valid when the R&S FS315 was last switched off are restored. The R&S FS315 also lets you save and load user-defined settings. You can save 10 different settings (SAVE 1 to 10) and 5 traces (WAVE 1 to 5).
Page 179 R&S FS315 SYSTEM Functions (BACK/SYS Key) Loading user- Connect the USB stick to the USB connector DEV [17] if the USB stick is where the settings are saved. defined settings Press the function key in the menu. A table containing the available settings is displayed (memory locations). Select a setting with the 5 or 6 cursor key [7].
Page 180: Printing Out A Screenshot
SYSTEM Functions (BACK/SYS Key) R&S FS315 6.3.3.2 Printing out a Screenshot The R&S FS315 prints out (printer) or saves (USB stick) a current screenshot when you press the BACK/SYS key and an overview of the principal current instrument settings. A printer with a USB device connector or a USB stick is required.
Page 181 R&S FS315 SYSTEM Functions (BACK/SYS Key) Printing out a Connect a printer to the USB connector DEV [17]. screenshot Select a printer for the output unit ( 6-180). Press the function key in the menu. A table containing the available parameters is displayed. Select the PRINT SCREEN parameter with the 5 or 6 cursor key [7].
Page 182 SYSTEM Functions (BACK/SYS Key) R&S FS315 Saving the screen- Connect the USB stick to the USB connector DEV [17]. shot as a bitmap Select the USB stick for the output unit ( 6-180). (.bmp) in the USB stick Press the function key in the menu.
Page 183 R&S FS315 SYSTEM Functions (BACK/SYS Key) Saving the wave- Connect the USB stick to the USB connector DEV [17]. form data as an Press the function key in the menu. ASCII file (.asc) in the USB stick A table containing the available parameters is displayed. Select the ASCII TO USB-STICK parameter with the 5 or 6 cursor key [7].
Page 184: System Settings (Config Menu)
SYSTEM Functions (BACK/SYS Key) R&S FS315 6.3.4 System Settings (CONFIG Menu) What the settings You can configure the general system parameters for time/date, reference are for source, instrument interface and screen saver from the CONFIG menu. Selecting the Press the BACK/SYS key [3]. CONFIG menu menu with the 3 or 4 cursor key [6].
Page 185: Setting The Date And Time Of Day
R&S FS315 SYSTEM Functions (BACK/SYS Key) 6.3.4.1 Setting the Date and Time of Day When you save a setting, it is time-stamped using the time provided by the internal real-time clock ( 6-178). When you set the internal real-time clock, you can choose between two date and time display format options and modify the parameters.
Page 186 SYSTEM Functions (BACK/SYS Key) R&S FS315 Setting Press the function key in the menu. the date A table containing the available parameters is displayed. Select the DATE parameter with the 5 or 6 cursor key [7]. Press the ENTER key [5]. An entry field containing the current setting is displayed.
Page 187: Selecting An Internal Or External Reference Source
R&S FS315 SYSTEM Functions (BACK/SYS Key) 6.3.4.2 Selecting an Internal or External Reference Source The R&S FS315 acting as the frequency standard for all internal oscillators can use the internal reference source (internal) or an external reference source (external). A 10 MHz crystal oscillator is used as the internal refer- ence source.
Page 188: Configuring The Instrument Interfaces
SYSTEM Functions (BACK/SYS Key) R&S FS315 6.3.4.3 Configuring the Instrument Interfaces The R&S FS315 can be remote-controlled via the existing USB host interface [16]. The R&S FS315 automatically detects an existing connection to a PC and also automatically switches to remote control in the default setting (AUTO).
Page 189 R&S FS315 SYSTEM Functions (BACK/SYS Key) EXTERN If EXTERNAL is set, the USB master switch is in the “remote control” mode and the R&S FS315 can only be controlled via a PC. When you press the BACK/SYS key [3], the R&S FS315 can be switched again to “local mode”...
Page 190: Setting The Screen Saver Mode
SYSTEM Functions (BACK/SYS Key) R&S FS315 6.3.4.4 Setting the Screen Saver Mode The R&S FS315 has a screen-saver function that turns off the screen [14] Activating the after a certain time. There are a number of timing options for screen turn-off: screen saver none The screen is always on.
Page 191 R&S FS315 SYSTEM Functions (BACK/SYS Key) Activating the If the instrument is in remote-control mode and the results are being dis- played on the controller (PC monitor) the screen can be switched off. Screen saver in remote-control picture mode The screen displays when the instrument is in remote-control mode. black The screen is switched off.
Page 192 SYSTEM Functions (BACK/SYS Key) R&S FS315 Setting screen back- You can select the following background colors for the screen [14] of the ground color R&S FS315: black The screen background is black. blue The screen background is blue. white The screen background is white. Press the function key in the menu.
Page 193: Selecting An Internal Or External Monitor
R&S FS315 SYSTEM Functions (BACK/SYS Key) 6.3.4.5 Selecting an Internal or External Monitor Screen display is possible via the internal monitor or an external monitor. intern Screen display is via the built-in colour TFT display. extern Screen display is via the connected monitor. Selecting If required, connect a monitor to the MONITOR connector [21].
Page 194: Service Functions (Service Menu)
SYSTEM Functions (BACK/SYS Key) R&S FS315 6.3.5 Service Functions (SERVICE Menu) What the settings You can call a number of auxiliary functions to be used for servicing or trou- are for bleshooting from the SERVICE menu. These functions are not required for normal measurements with the R&S FS315.
Page 195: System Information (Info Menu)
R&S FS315 SYSTEM Functions (BACK/SYS Key) 6.3.6 System Information (INFO Menu) What the settings You can obtain information such as module data, instrument statistics and are for system messages from the INFO menu. Selecting the Press the BACK/SYS key [3]. INFO menu menu with the 3 or 4 cursor key [6].
Page 196: Displaying Module Data
SYSTEM Functions (BACK/SYS Key) R&S FS315 6.3.6.1 Displaying Module Data You can display the serial number of the modules installed in the R&S FS315. Calling • Press the function key in the menu. module data A table listing the current modules and the serial number is displayed. 6.3.6.2 Displaying Instrument Statistics You can display the following R&S FS315 statistics:...
Page 197: Displaying System Messages
R&S FS315 SYSTEM Functions (BACK/SYS Key) 6.3.6.3 Displaying System Messages You can display the most recent R&S FS315 system messages in their order of occurrence. Operating errors are neither saved nor displayed. System messages help the service personnel to analyze the instrument and handle errors, and should therefore only be deleted by them.
Page 198 SYSTEM Functions (BACK/SYS Key) R&S FS315 Deleting system Press the function key in the menu. messages (only for service The table of current system messages is displayed. Select the first line with the 5 or 6 cursor key [7]. Press the ENTER key [5]. The field for the input of the password is displayed.
Page 199: Remote Control/Pc Software R&S Fs315-K1
R&S FS315 Applications of PC Software Remote Control/PC Software R&S FS315-K1 The latest remote control commands and software drivers for the USB- Note interface of the R&S FS315 can be downloaded from the R&S Smart Instru- ments internet site: www.smart-instruments.de Applications of PC Software Performance fea- The PC Software R&S FS315-K1 allows convenient operation of the R&S...
Page 200: Installation And Configuration
Installation and Configuration R&S FS315 Installation and Configuration System requirements The PC software runs on Windows™ 2000 and XP operating systems with USB interface. 7.2.1 Installing the PC Software To install the PC software, you must have administrator rights on your PC. ( Note Windows™...
Page 201 R&S FS315 Installation and Configuration Click <Next> to continue the installation. Click <Browse> to assign a new directory if you wish to install the pro- gram in another directory than proposed. Click <Next> to continue the installation. Operating manual, 08/2005 7-201 E-1147.1000.04 www.valuetronics.com...
Page 202 Installation and Configuration R&S FS315 Click <Next> to continue the installation. Installation begins and the data are transferred to the PC.Please wait a moment. Click <Finish> to successfully complete the installation. Click <Yes> to restart the computer. E-1147.1000.04 7-202 Operating manual, 08/2005 www.valuetronics.com...
Page 203: Installing The Device Drivers
R&S FS315 Installation and Configuration All new settings are now effective and the following appears in the Win- dows™ Start\Programs\Rohde&Schwarz\Series300 start-up menu: Install the device driver now ( next section). 7.2.1.2 Installing the Device Drivers 7.2.1.2.1 Installing Steps for Windows™ 2000 R&S FS315 is connected to the PC via the USB interface.
Page 204 Installation and Configuration R&S FS315 Installing device Click <Next> to continue the installation. drivers Select Search for a suitable driver for my device and click <Next> to continue the installation. E-1147.1000.04 7-204 Operating manual, 08/2005 www.valuetronics.com...
Page 205 R&S FS315 Installation and Configuration Select CD-ROM drives and click <Next> to continue the installation. Then the search results for the driver data are displayed. Click <Next> to continue the installation. Operating manual, 08/2005 7-205 E-1147.1000.04 www.valuetronics.com...
Page 206 Installation and Configuration R&S FS315 Click <Finish> to complete the installation. This is followed by the installation of the device driver for the Rohde & Schwarz Power Supply. Windows generally "remembers" all the nec- essary information when installing the Spectrum Analyzer R&S FS315 and installs the Rohde &...
Page 207: Installing Steps For Windows™ Xp
R&S FS315 Installation and Configuration The drivers are now correctly installed and this can be checked using the device manager. Create now the program version for specific instrument ( 7-212). 7.2.1.2.2 Installing Steps for Windows™ XP Connecting R&S R&S FS315 is connected to the PC via the USB interface. The connection FS315 to the PC cable has two plug types.
Page 208 Installation and Configuration R&S FS315 If the R&S FS315 is not automatically recognized, check that the USB master switch of the R&S FS315 is at AUTO ( 6-188). Installing device Select Install the software automatically and click <Next> to continue drivers the installation.
Page 209 R&S FS315 Installation and Configuration Click <Finish> to successfully complete the installation. This is followed by the installation of the device driver for the Rohde & Schwarz Power Supply. Windows generally "remembers" all the nec- essary information when installing the Spectrum Analyzer R&S FS315 and installs the Rohde &...
Page 210 Installation and Configuration R&S FS315 The drivers are now correctly installed and this can be checked using the device manager. Create now the program version for specific instrument ( 7-212). E-1147.1000.04 7-210 Operating manual, 08/2005 www.valuetronics.com...
Page 211: Connecting The Pc-Software With The R&S Fs315
R&S FS315 Installation and Configuration 7.2.2 Connecting the PC-Software with the R&S FS315 Introduction Due to the USB-Technology which is used in the R&S FS315, more than one instrument in the 300 Series can be connected with a PC at the same time. For each instrument a connection with the respective software which allows the opening and remote controlling of the specific instrument has to be cre- ated.
Page 212: Creating The Program Version
Installation and Configuration R&S FS315 7.2.2.2 Creating the Program Version Selecting In I click on the instrument for which you create a link. the instrument Creating the pro- Click <Create Program>. A program version for specific instrument is gram version for created and displayed in II with the status ( ).
Page 213: Uninstalling The Pc Software
R&S FS315 Installation and Configuration 7.2.3 Uninstalling the PC Software Installation steps for Place the CD ROM, which came with the product, in the installation drive. The autorun function automatically initiates installation. Alternatively you Windows™ 2000 may also initiate the installation in the start menu of Windows™ Start\Run using the Setup.exe from the CD.
Page 214: Update Pc Software
Installation and Configuration R&S FS315 7.2.4 Update PC Software Introduction Old versions of the PC-Software can be updated with the Series 300 Soft- ware Manager. Therefore the old version has to be uninstalled ( 7-213). The new version can then be installed ( 7-200).
Page 215 R&S FS315 Installation and Configuration Selecting In I click on the instrument for which you wish to update a link. the instrument Updating the Click in II on <Update>, to update the displayed link. link Click in II on <Exit>, to shut down the service program. The updated connection FS315 0000xxxxxx is displayed in the Windows™...
Page 216: Starting The Remote Control
Starting the Remote Control R&S FS315 Starting the Remote Control 7.3.1 Connecting the Instrument to the PC PC software R&S FS315-K1 must be installed before you can connect the Note R&S FS315 to the PC ( 7-200). Introduction R&S FS315 is connected to the PC via the USB interface. The connection cable has two plug types.
Page 217: Starting The Program
R&S FS315 Starting the Remote Control 7.3.2 Starting the Program Starting the program In the Windows™ start-up directory click on: Start\Programs\Rohde&Schwarz\Series300\FS315 0000xxxxxx If the link is not avail- If the program does not start, then click with the right mouse button in the able Windows™...
Page 218 Starting the Remote Control R&S FS315 Program interface The program starts up and you may begin using the R&S FS315 remote control. Loading the current A new session opens automatically when you start the program. The current R&S FS315 settings are loaded. The following settings are display and instrument settings evaluation functions and are not transferred to the PC software: Marker functions (...
Page 219: Closing The Remote Control
R&S FS315 Getting Started 7.3.3 Closing the Remote Control Closing the program In Windows™ click on the close symbol x. You may also select the option Exit in the pull-down menu File. Closing the remote Remove the USB cable from one side or press the BACK/SYS key at control the front panel of the R&S FS315.
Page 220: Measuring Sequence
Getting Started R&S FS315 7.4.1.2 Measuring Sequence In this example, a signal with a frequency of 200 MHz and a level of –30 dBm Introduction is applied to the HF input of the R&S FS315. The center frequency and the frequency display span are set manually.
Page 221 R&S FS315 Getting Started Measuring the level Press <Ctrl+Shift+M>. The marker jumps to the signal peak. An arrow and frequency with appears above of the diagram at the position of the marker. the marker You can change the position of the marker by moving the arrow with the left <Mouse Button>.
Page 222: Control Concept
Control Concept R&S FS315 Control Concept 7.5.1 PC Monitor Display The PC monitor provides continuous information about the results and pa- Introduction rameters of the selected measuring functions. The display format for the measuring results and the insertion of the function displays depend on the current settings.
Page 223: Diagram
R&S FS315 Control Concept 7.5.1.1 Diagram The diagram area contains: Diagram displays Measuring diagram with scale (a) and traces (i) Measuring value displays, e.g., display lines (h) and markers (f) Limit lines (k) Parameter field (c) and status displays (e) Navigation elements in x ( ) and y direction ( Pop-up error messages (d)
Page 224: Menus
Control Concept R&S FS315 7.5.1.2 Menus Different pull-down menus can be accessed in the menu area. Calling up and dis- playing menus In addition, Windows™-typical menu items can be called up via a toolbar (icons). Menus for setting the measuring parameters and functions are also available as a toolbar and can be selected directly.
Page 225: Functions
R&S FS315 Control Concept 7.5.1.3 Functions Main functions dis- The main functions of the R&S FS315 are always displayed in the top part play of the function display. These are: Center frequency (Center) Frequency display span (Span) Reference level (Level) Sweep time (SWT) Resolution band width (RBW) These may be changed at any time.
Page 226: Input Via Keyboard And Mouse
Control Concept R&S FS315 7.5.2 Input via Keyboard and Mouse Introduction The R&S FS315 is remote controlled via PC keyboard and mouse with the help of menus. The most important keys are: Numeric keys 0 ... 9 3 / 4/ 6 / 5 Arrow keys Function keys F5 ...
Page 227: Function Keys
R&S FS315 Control Concept − Positioning the cursor in the input fields with the 3 / 4 arrow keys − Increasing or decreasing numerical parameter inputs with the 6 / 5 arrow keys 4 x 6 4 x 5 7.5.2.3 Function Keys Function Function keys open the menus to set the measuring parameters and measur-...
Page 228: Action Keys (Enter, Esc)
Control Concept R&S FS315 7.5.2.4 Action Keys (Enter, Esc) The action keys complete the menu-operated settings. Function − Enter key This key closes the input or selection. The new value now applies. − Esc key This key closes the selection. The old value is preserved. 7.5.2.5 Tab Key Function...
Page 229: Mouse Buttons
R&S FS315 Control Concept 7.5.2.7 Mouse Buttons Placing the mouse pointer over and clicking on any program interface item Function will allow for different actions. − Left mouse button Pull-down menus can be opened with the mouse − The contents of input fields can be highlighted with mouse button pressed and held −...
Page 230: Calling Up And Changing The Menus
Control Concept R&S FS315 7.5.3 Calling up and Changing the Menus Various methods are The R&S FS315 is remote controlled via a menu. The keyboard and the possible mouse can be used to select a menu ( 7-226). Instrument parameters (and program functions) can be selected in different ways on the PC interface, e.g., unit for the level display: Selecting with the pull-down menu Selecting with short keys...
Page 231: Setting The Parameters
R&S FS315 Control Concept 7.5.4 Setting the Parameters Introduction Parameters can be set in different ways: Selecting an instrument function directly (command button) Selecting settings in the selection fields Inputting numerical parameters in the input fields Moving markers The keyboard and mouse can be used for the settings ( 7-226).
Page 232: Selecting The Settings
Control Concept R&S FS315 7.5.4.2 Selecting the Settings Several settings are available for certain instrument functions, e.g., level dis- Setting the instru- play unit. ment functions in selection windows The selection window can be reached in a number of different ways ( 230), e.g., selection using the toolbar menu.
Page 233 R&S FS315 Control Concept Selecting the unit The entry is made in the active measurement unit, which is indicated after the numeric value in the entry field and can be changed. Make sure that there are no spaces between the numeric figure and the measurement unit. You may omit the base unit (e.g.
Page 234: Moving The Markers
Overview of all Menus and Functions (Shortcuts) R&S FS315 7.5.4.4 Moving the Markers In the diagram area, lines (markers, limits, etc.) can be inserted to analyze Introduction the trace. In addition, an arrow is displayed at the edge of the diagram at the position of the corresponding line.
Page 235: Function
R&S FS315 Overview of all Menus and Functions (Shortcuts) 7.6.2 Function Instrument functions are accurately described in chapter 6 of the R&S Note FS315 manual. The menus used to set the spectrum analyzer are displayed in the pull down Menus for configur- menu Functions or in the toolbar menu.
Page 236: Freq Menu
Overview of all Menus and Functions (Shortcuts) R&S FS315 7.6.2.1 FREQ Menu Main function dis- play (always visible) Function display (insert with F5 key) Function and shortcut ( 1 ) Entering the center frequency ( 2 ) Entering the span ( 3 ) Entering the start frequency ( 4 )
Page 237: Amp Menu
R&S FS315 Overview of all Menus and Functions (Shortcuts) 7.6.2.2 Amp Menu Main function dis- play (always visible) Function display (insert with F6 key) Function and shortcut Entering the reference level ( 1 ) Entering a level offset ( 2 ) Selecting the level display range ( 3 ) Selecting a unit for the level display...
Page 238: Marker Menu
Overview of all Menus and Functions (Shortcuts) R&S FS315 7.6.2.3 Marker Menu Function display (insert with F7 key) Function and shortcut Open submenu: Activate marker 1 Place marker 1 on the trace maximum ( 6 ) Place marker 1 on the next trace maximum to the left ( 7 ) Place marker 1 on the next trace maximum to the right ( 8 )
Page 239 R&S FS315 Overview of all Menus and Functions (Shortcuts) Open submenu: Marker measurement functions Measuring noise power density ( 15 ) Measuring signal bandwidth ( 16 ) Bring display line up on screen ( 14 ) Bring limit line up on screen 7-249) Open submenu: Reference points for measuring level differences...
Page 240: Bw/Sweep Menu
Overview of all Menus and Functions (Shortcuts) R&S FS315 7.6.2.4 BW/Sweep Menu Main function dis- play (always visible) Function display (insert with F8 key) Function and shortcut Setting the resolution bandwidth manually ( 2 ) Activating automatic resolution bandwidth setting ( 9 ) Setting the video bandwidth manually ( 3 )
Page 241: Trace Menu
R&S FS315 Overview of all Menus and Functions (Shortcuts) Open submenu: Setting the detector PEAK detector is active ( 7 ) MIN PEAK detector is active ( 7 ) SAMPLE detector is active ( 7 ) RMS detector is active ( 7 ) AVERAGE detector is active ( 7 )
Page 242: Trigger Menu
Overview of all Menus and Functions (Shortcuts) R&S FS315 7.6.2.6 Trigger Menu Function display (insert with F10 key) Function and shortcut Free-running measurements ( 1 ) Triggering by an external TTL signal ( 2 ) Triggering by the display level ( 3 ), ( 6 ) Setting the trigger edge Triggering on positive-going edge...
Page 243: Measure Menu
R&S FS315 Overview of all Menus and Functions (Shortcuts) 7.6.2.7 Measure Menu Function display (insert with F11 key) Function and shortcut Open submenu: Measure the power in the time domain (ZERO SPAN) Output the peak value within the section ( 1 ) Output the mean value within the section ( 1 ) Output the rms value within the section...
Page 244 Overview of all Menus and Functions (Shortcuts) R&S FS315 Function display (insert with TG key) Function and shortcut Open submenu: Configuring the built-in generator Enter the output level ( 2 ) Enter the frequency or enter the frequency offset (Tracking Generator) ( 5 ) Calibrate the test setup and activate the calibration ( 4 )
Page 245: View
R&S FS315 Overview of all Menus and Functions (Shortcuts) 7.6.3 View Menus for configur- Menus for resizing the window and setting screen colors are available in the ing the program in- pull-down menu View. terface Switch on/off large window 7-266) Set screen color 7-267) 7.6.4...
Page 246: Saving/Exporting Data (File)
Saving/Exporting Data (File) R&S FS315 Saving/Exporting Data (File) 7.7.1 Opening the Session A new session is opened automatically when the program is started ( Application 217). The current R&S FS315 settings are loaded. The following settings are display and evaluation functions and are not transferred to the PC software: Marker functions ( 7-238) Scale of measuring diagram (Range, Unit)
Page 247: Loading The Saved Settings
R&S FS315 Saving/Exporting Data (File) 7.7.1.2 Loading the Saved Settings If you drag and drop an *.fs file (saved instrument settings) to the FS315- Note K1.exe icon while the program is closed, the program will open using the settings from this *.fs file. Beginning the Select menu item: Open.
Page 248: Saving The Session
Saving/Exporting Data (File) R&S FS315 7.7.2 Saving the Session Application You can save specific instrument settings if you plan to work with them on a regular basis (Save Session). You may also change a previously saved instrument setting and save it under a different file name (Save Session as..).
Page 249: Monitoring The Measuring Values
R&S FS315 Saving/Exporting Data (File) 7.7.3 Monitoring the Measuring Values Introduction If you wish to monitor deviation of measuring values you may set limit lines (Limit Lines) to monitor them. A logfile is created which can be opened with any text editor or with Microsoft Excel™. 7.7.3.1 Inserting the Limit Lines Application...
Page 250 Saving/Exporting Data (File) R&S FS315 Use the left-hand table to enter the frequency and amplitude values for the Lower Line and use the right-hand table to enter the Upper Line. Each row in the table describes a reference point on the limit line. At least 2 value pairs (reference points) per line must be entered, e.g., lower line: -80 dB for full span.
Page 251 R&S FS315 Saving/Exporting Data (File) Inserting limit lines Tick the check boxes for Lower Line and/or Upper Line to activate the limit line(s). Click <APPLY> to activate the limit line(s). The status information Upp and/or Low are displayed in the diagram. Saving and loading Press <SAVE>...
Page 252: Monitoring
Saving/Exporting Data (File) R&S FS315 7.7.3.2 Monitoring A logfile is created during the monitoring process, which documents over- and undershooting of a limit line. This allows random events to be captured. Creating the logfile Select menu item: Logfile. The Logfile window opens. Click <change>...
Page 253 R&S FS315 Saving/Exporting Data (File) Starting the monitor- Enter the maximum logfile memory size in KB. The default setting is ”512 KB”. Click <Enable recording> to start the monitoring process. The button lights up red. If an over- or undershoot of a limit is detected, the corresponding status information Upp and/or Low flashes in the diagram.
Page 254: Analyzing The Logfile
Saving/Exporting Data (File) R&S FS315 7.7.3.3 Analyzing the Logfile The logfile contains the measuring data, which were recorded during the Logfile content monitoring process. A record is created from the following parameters when a limit line has been over- or undershot. Date - event date Time...
Page 255: Exporting The Measuring Data
R&S FS315 Saving/Exporting Data (File) 7.7.4 Exporting the Measuring Data Application To record the measurements, you can save the current diagram with the most important parameter settings in ASCII code or you can save a screen- shot of the current window as a JPEG. 7.7.4.1 Creating the ASCII File Creating the ASCII...
Page 256: Creating The Screenshot
Saving/Exporting Data (File) R&S FS315 ASCII File contents The ASCII file contains the following parameters: Center - center frequency Span - span - resolution bandwidth Pixel - level values of the trace The number of exported level values (pixels) depends on the setting for the Note size of the window.
Page 257: Printing The Window
R&S FS315 Saving/Exporting Data (File) 7.7.5 Printing the Window Page setup Select menu item: Page setup. The Page setup opens. Check the <Print header> box ( ) to print a header with the file name, date and page number. Check <Use default margins from preferences> to print page with the presettings.
Page 258: Transducer Factors
Transducer Factors R&S FS315 Transducer Factors Antenna factors (transducer factors) are necessary to allow the field strength received using an antenna to be displayed on a spectrum analyzer with the correct level. Antenna factors are supplied by the antenna manufacturers in the form of calibration reports or as simple ASCII or text files.
Page 259 R&S FS315 Transducer Factors Meaning of buttons and entry fields Transducer Set <New> Creating transducer set <Open> Opening transducer set <Save> Saving transducer set Transducer Files <New> Creating transducer list <Import> Importing transducer list <Remove> Deleting transducer list Unit Selecting unit of the transducer list Comment Editing a comment for transducer list Transducer Factors...
Page 260: Creating Transducer List
Transducer Factors R&S FS315 7.8.1 Creating Transducer List Antenna factors will be supplied in calibration certificates on paper or elec- tronically as ASCII-files by the antenna manufacturers. They specify discrete level correction values over the frequency range of the antenna. For frequencies not included in the correction list, level correction values are determined by linear interpolation.
Page 261 R&S FS315 Transducer Factors Editing transducer Click on <Add> in the field Transducer Factors. factors A new line (correction value) will be created in the transducer list. Click repeatedly on <Add> to create the wished number of correction values. Click in the field Transducer Factors on the line you want to edit. The cursor jumps to the entry field Frequency.
Page 262 Transducer Factors R&S FS315 Saving transducer Click on <Save> in the field Transducer Set. list The window Save File will be opened. Choose a Directory and type in the file name. Click on <Save>. The transducer list will be saved (*.tds) Importing trans- Click on <Import>...
Page 263: Creating Transducer Set
R&S FS315 Transducer Factors 7.8.2 Creating Transducer Set In addition to the antenna factors, it is also possible to take the damping fac- tor of a cable or the gain of an amplifier into consideration. A complete system can consist of several components (up to 10 transducer lists) for which a cumulative correction factor (transducer set) is calculated.
Page 264 Transducer Factors R&S FS315 Transducer factor Cumulative correction factor Transducer list 2 Transducer list 1 You can create new transducer sets and load and edit existing transducer sets. The save function saves all information from the transducer set. Only the cumulative correction factor is used when a transducer set is trans- ferred to the R&S FS315 from a USB stick.
Page 265: Activating Transducer Factors
R&S FS315 Transducer Factors 7.8.3 Activating Transducer Factors The transducer factors and transducer sets are calculated and edited using the PC software R&S FS315-K1. If the R&S FS315 is remote-controlled from the PC, the selected transducer set is applied directly to the displayed trace. You can also use a USB stick to load/save transducer sets to/from the R&S FS315 ( 6-164).
Page 266: Customizing The Working Window (View)
Customizing the Working Window (View) R&S FS315 Customizing the Working Window (View) 7.9.1 Adjusting the Window Size Adjusting the win- Select menu item: Large Window to enlarge the program window. dow size The diagram is enlarged by a factor of 2. In addition to the Main Set- tings, two function displays appear in the function display area.
Page 267: Changing The Window Color
R&S FS315 Customizing the Working Window (View) 7.9.2 Changing the Window Color Changing the win- Select menu item: Color. dow color The Screen Color window opens. Colors for the listed window elements can be changed. Click on a color field to change the color for the corresponding windows element.
Page 268: Getting Help (?)
Getting Help (?) R&S FS315 7.10 Getting Help (?) 7.10.1 Starting the Help • Starting the help Select menu item: Help to start the Windows™ Help for program FS315 0000xxxxxx. Acrobat Reader™ ( CD-ROM) starts up and the English R&S FS315 operating manual opens.
Page 269: Displaying Module Data
R&S FS315 Getting Help (?) 7.10.3 Displaying Module Data Displaying module Select menu item: Service to obtain information about the individual data modules. The modules of the R&S FS315 will be output and displayed. Starting self- Click the line <FS315> to select the generator module. diagnostics Click <Self test>...
Page 270: Instrument Interfaces
Keyboard Connector (KEYB) R&S FS315 Instrument Interfaces This chapter The chapter 8 contains a description of the R&S FS315’s interfaces. Further The address of our Support Center and a list of Rohde & Schwarz service information centers will be found at the front of this manual. Keyboard Connector (KEYB) Connector There is a 6-pin PS/2 connector KEYBOARD [22] on the R&S FS315’s rear...
Page 271: Input For External Trigger (Ext Trig)
R&S FS315 Input for External Trigger (EXT TRIG) Input for External Trigger (EXT TRIG) Specification The connector EXT TRIG/GATE IN [15] is for an external signal which is used to control measurements. The signal has TTL levels (low < 0.7 V, high > 1.4 V), and the typical imped- ance is 10 kΩ.
Page 272: Error Messages
System Messages R&S FS315 Error Messages This chapter Refer to chapter 8 for a detailed description of errors that may occur in the R&S FS315. You will also find notes on troubleshooting. The R&S FS315 displays detected errors and warnings on the screen. The various types of messages are described in the following: System messages Warnings indicating impermissible operating states...
Page 273: Warnings Indicating Impermissible Operating States
R&S FS315 Warnings Indicating Impermissible Operating States Warnings Indicating Impermissible Operating States Warnings Red labels at the upper left corner of the measurement grid tell the user that the measurement results may be incorrect. This can be caused by exces- sively high signal levels at the input or by incorrect settings on the instrument.
Page 274 Warnings Indicating Impermissible Operating States R&S FS315 UNCAL The message UNCAL appears if the resolution filter (RBW) and/or the video bandwidth (VBW) can no longer settle properly; this fault could result in level and frequency errors. The error is caused by the sweep time ( 6-126) being too short (this error can only occur if settings are made manually).
Page 275: Index
R&S FS315 Index Index 10.1 Index RBW, VBW and SPAN ....... 6-121 RBW/SPAN......... 6-123 AC line Reference level ........6-90 Connection ..........3-39 Sweep time ......... 6-126 Voltage...........3-39 Create (Program)........7-211 AC line fuse ..........2-36 Cursor keys AC line switch ..........2-36 Description ..........
Page 276 Index R&S FS315 External triggering input......8-271 Key assignment ... See Function key area Function keys........5-61 Find maximum ......... 6-95, 6-99 Keyboard connector........ 8-270 Frequency Counter ..........6-97 Measurement.........6-97 Level (tracking generator)....... 6-159 Range .......... 6-75, 6-79 Level axis Frequency (tracking generator) ....6-159 Display range ........
Page 277 R&S FS315 Index Measurement sensitivity ......6-92 Operation Measuring data (export) ......7-255 Manual ..........5-47 Measuring example Outputs ........... 8-270 Frequency..........7-219 OVERLOAD (warnings) ......9-273 Level ............7-219 Overtemperature Error (system messages) ... 9- Menu AMPT........... 5-62, 6-83 Overview BW/SWEEP ....... 5-64, 6-118 Functions ..........
Page 278 Index R&S FS315 Point on trace ........6-115 Stock number.......... 6-196 Reference level Stop frequency.......... 6-79 Coupling..........6-90 Sweep ......See Frequency sweep Entry ............6-84 Continuous.......... 6-125 Reference point n-times ..........6-125 on measurement diagram ....6-115 Number of ........... 6-125 on trace..........6-115 Time ............
Page 279 R&S FS315 Index ADC overload........9-273 UNCAL (warning) ........9-274 OVERLOAD ........9-273 Uninstall (program) ........7-213 PLL unlock .......... 9-273 Unit keys ............5-47 UNCAL..........9-274 Window Update (Program)........7-214 USB connection....7-203, 7-207, 7-216 Adjust window size ......7-266 USB interface ..........8-271 Change window color ......

This manual is also suitable for:

1147.1000.03

Rohde & Schwarz R&S FS315 Operating Manual

Quick Links

Need help?

Questions and answers

Related Manuals for Rohde & Schwarz R&S FS315

Summary of Contents for Rohde & Schwarz R&S FS315