Home

RT-ZD20/30 User Manual

1. eeeeeeeeee 6 Input voltages eeeeeeees 2f Test equipment for functional check 45 User Manual 1410 4538 02 0302 U TID AC igo MN RE T Using accessories PANT P 23 Browser adapter sss 24 Ground adapter square pin 25 Ground pin solderable offset 24 ET E 25 MEG Ar 26 MIN CMD EE 26 Signal pins esee 22
2. From the outside the 7 mm coaxial connector looks like a standard BNC connector However it is constructed differently and is capable of a signifi cantly higher frequency limit A ne er FE User Manual 1410 4538 02 0302 9 R amp S RT ZD20 30 Product Description Accessories and Items 1 4 Accessories and Items The figure below shows all accessories that are available for the R amp S RT ZD20 30 differential probe Ve signal pin solder in RS adapter square pin browser adapter ae signal pin variable spacing marker band kit flex adapter square pin flex adapter solder in mini clip mini clip micro clip micro clip Fig 1 1 Available accessories rn kr eres AAA El User Manual 1410 4538 02 0302 10 R amp SSRT ZD20 30 Product Description Accessories and Items 1 4 4 Accessories Supplied The following table shows the accessories supplied with the R amp S RT ZD20 30 dif ferential probe Table 1 1 Accessories supplied Signal pin variable spacing Browser adapter Adapter square pin Flex adapter solder in 4 cm 1 6 in 10 cm 3 9 in Flex adapter square pin 4 cm 1 6 in 10 cm 3 9 in User Manual 1410 4538 02 0302 11 R amp S RT ZD20 30 Product Description Accessories and Items meir mE Lead 15 cm 5 9 in Marker band kit Carrying case with foam inlay GE ee User Manual 1410 4538 02 0302 12 R amp S RT ZD20 30 Pro
3. Negative signal socket 3 Ground socket 4 Micro button The accessories supplied for the probe head sockets are listed in chapter 1 4 1 Accessories Supplied on page 11 Signal and ground sockets are compatible with 0 64 mm 25 mil square pins and 0 6 mm to 0 8 mm 24 mil to 35 mil round pins The signal sockets have a spacing of 5 08 mm 200 mil 1 3 2 Probe Box The probe box connects the probe and the oscilloscope via the Rohde amp Schwarz probe interface The Rohde amp Schwarz probe interface contains a male precision 7 mm 276 mil BNC connector and six pogo pin connectors This interface provides the required supply voltage and is also used for simultaneously transmitting analog Signals and digital data All the analog voltages required by the probe are generated AA ca ln cM O es Eggs E EE User Manual 1410 4538 02 0302 8 R amp S RT ZD20 30 Product Description Description of the Probe in the probe box This approach ensures that it will be possible to operate future probes on any base unit that features a Rohde amp Schwarz probe interface 1 Rohde amp Schwarz probe interface with 7 mm 276 mil coaxial connector and 6 pogo pins 2 Release knob Risk of interface damage Make sure to connect the probe only to a base unit or an adapter having a Rohde amp Schwarz interface Do not connect the probe to a commercially available BNC jack as this can cause irreparable damage to the interface
4. R amp S RTO settings Horizontal scale 10 us div Vertical scale 1 6 V div Trigger source Ch1 Trigger mode Auto Run cont ACQUISITION key gt Decimation High res gt Waveform Arithmetics Average gt Average Count 16 Meas menu gt Setup gt Source Ch1 gt Main Measurement Mean gt State on CH1 key gt Offset 0 V Position 0 div Vertical menu gt Probe Setup gt Ch1 gt ProbeMeter on A A G Ep A ae a AAA User Manual 1410 4538 02 0302 48 R amp SRT ZD20 30 Functional Check Measurement e Offset Compensation oet the voltage on the DC voltage source so that the DMM displays exactly 5 000 V Check displayed values in the Measurement Results box Mean 5 V 250mV ProbeMeter 5 V 14 mV Repeat procedure for 5 000 V Check again the measurement results Mean 5 V 250 mV ProbeMeter 5 V 14 mV 7 4 Offset Compensation The offset compensation is checked Test setup oame as with DC accuracy R amp S RTO settings Measurement Horizontal scale 10 us div Vertical scale 1 6 V div Trigger source Ch1 Trigger mode Auto Run cont ACQUISITION key gt Decimation High res gt Waveform Arithmetics Average gt Average Count 16 Meas menu gt Setup gt Source Ch1 gt Main Measurement Mean gt State on CH1 key gt Offset 0 V Position 0 div Vertical menu gt Probe Setup gt Ch1 gt ProbeMeter
5. Schwarz bajo la denominaci n de producto entre ellos tambi n aparatos instalaciones as como toda clase de accesorios Los datos espec ficos del producto figuran en la hoja de datos y en la documentaci n del producto Simbolos y definiciones de seguridad Simbolo Significado Simbolo Significado Aviso punto de peligro general Observar la documentaci n del producto Atenci n en el manejo de dispositivos de peso elevado Peligro de choque el ctrico Advertencia superficie caliente Conexi n a conductor de protecci n Conexi n a tierra I Conexi n a masa 1171 0000 52 06 Tensi n de alimentaci n de PUESTA EN MARCHA PARADA Indicaci n de estado de espera standby Corriente continua DC Corriente alterna AC Corriente continua Corriente alterna DC AC El aparato est protegido en su totalidad por un aislamiento doble reforzado Distintivo de la UE para bater as y acumuladores M s informaci n en la secci n Eliminaci n protecci n del medio ambiente punto 1 Page 11 Instrucciones de seguridad elementales Simbolo Significado Simbolo Significado Aviso Cuidado en el manejo de 9 Distintivo de la UE para la dispositivos sensibles a la eliminaci n por separado de electrost tica ESD dispositivos el ctricos y electr nicos M s informaci n en la secci n Eliminaci n protecci n del medio ambiente punto 2 Advertencia rayo l ser M s
6. The lead provides a flexible connection to the DUT It is plugged onto a pin on the DUT and can be used to connect either the signal sockets or the ground socket In addition it allows micro and mini clips to be connected to the probe Length Short lead 6 mm 236 mil Long lead 15 mm 591 mil User Manual 1410 4538 02 0302 25 R amp SSRT ZD20 30 Connecting the Probe to the DUT Mini clip The mini clip is designed for probing large IC pins wires and through hole components For probing clamp the mini clip to a pin and connect it to the signal socket or the ground socket using a lead NS D nf TE LB SS Y A gt e Q Q The micro clip is designed for probing IC pins and thin wires in fine pitch applications The micro clip fits directly into the signal socket or the ground socket using a lead A rer AAA User Manual 1410 4538 02 0302 26 R amp S9RT ZD20 30 Characteristics of Differential Probes HEGE AAA EEE EET 4 Characteristics of Differential Probes A differential probe has three sockets the positive signal socket the negative signal socket and the ground socket Fig 4 1 Input voltages on a differential probe Differential probes provide multiple input voltages e Differential mode input voltage Vin Voltage between the positive and negative signal sockets e Positive single ended input voltage V Voltage between the positive signal socket and the ground soc
7. fork lifts wagons etc The user is responsible for securely fastening the products to or on the means of transport or lifting Observe the safety regulations of the manufacturer of the means of transport or lifting Noncompliance can result in personal injury or material damage 1171 0000 52 06 Page 8 Basic Safety Instructions 3 If you use the product in a vehicle it is the sole responsibility of the driver to drive the vehicle safely and properly The manufacturer assumes no responsibility for accidents or collisions Never use the product in a moving vehicle if doing so could distract the driver of the vehicle Adequately secure the product in the vehicle to prevent injuries or other damage in the event of an accident Waste disposal Environmental protection 1 Specially marked equipment has a battery or accumulator that must not be disposed of with unsorted municipal waste but must be collected separately may only be disposed of at a suitable collection point or via a Rohde amp Schwarz customer service center 2 Waste electrical and electronic equipment must not be disposed of with unsorted municipal waste but must be collected separately Rohde amp Schwarz GmbH amp Co KG has developed a disposal concept and takes full responsibility for take back obligations and disposal obligations for manufacturers within the EU Contact your Rohde amp Schwarz customer service center for environmentally responsible disposal of
8. on gt Micro button action Set offset to mean Set the voltage on the DC voltage source so that the DMM displays exactly 5 000 V Press the micro button The Offset to mean function of the probe automatically compensates the applied DC voltage The oscilloscope waveform should now be on the horizontal center line Switch measurement range Vertical scale 10 mV div Check displayed values in the Measurement Results box Mean 5 V 50 mV A c a User Manual 1410 4538 02 0302 49 R amp SSRT ZD20 30 Index Index A L Accessories ea 11 A A 13 Auto Zero PRX 18 Loading MERE 37 B M Bandwidth eseseeeeeeeses 6 33 Maintenance rannnnnnnnnnnnnnnnnnnnnennnnennnnenen 43 C Micro button ooccocccoccocccoccconconcccnnononancnos 6 MICIO BUON issue RUE RR Ren ES PEN ENS DRE DE Etats 19 CEANN mE EE 44 N 16 og 0 ccscccicncnnusanetecvarnegcauntceeentetntuuedetnns 29 A 13 N USB adapter eeeessss 13 A 28 37 O Common mode input voltage 27 Common mode range 29 Offset compensation 19 Common Mode Rejection Ratio 28 37 Offset compensation check 49 Connecting to DUT ssss 22 Operating voltage window 29 Connection inductance 34 p D Pins DC accuracy check seenen 48 Inserting and removin
9. red black 000 Multi Multi Contact ZG410 ZG410 el accessories 2 mini gt 2 leads 15 cm QD Let the probe and oscilloscope warm up at least for 15 minutes prior to the test Self alignment Prior to the functional check a self alignment of the R amp S RTO oscilloscope must be carried out Proceed as follows Test setup R amp S RTO oscilloscope R amp S RTO settings e PRESET e File menu gt Selfalignment gt Control tab gt Start Alignment After a successful self alignment the label UNCAL is no longer displayed 7 1 Initialization The correct initialization of the probe by the oscilloscope has to be checked Test setup Probe connected to CH1 of the R amp S RTO oscilloscope R amp S RTO settings Vertical menu gt Probe Setup gt Ch1 tab Measurement If initialization is correct the following values are displayed on the Setup tab of the Probes dialog box e g for the R amp S RT ZD30 Type active differential Name R amp S RT ZD30 Probe attenuation 10 1 Bandwidth 3 0 GHz a as eae na rer ca ce User Manual 1410 4538 02 0302 46 R amp S RT ZD20 30 Functional Check DC Offset 7 2 DC Offset The zero error of the probe oscilloscope system and the zero error of the R amp S Pro beMeter are checked Test setup Probe connected to CH1 of the R amp S RTO oscilloscope Signal and ground terminal of the probe shortened by mini clip make sure that there is no other ground
10. DUT to the oscilloscope where it is displayed graphically Although a probe has a wide variety of specifications these specifications can be grouped into two classes of basic requirements e High signal integrity of the transferred signal With an ideal probe the output signal that is transferred to the base unit would be identical to the input signal between the probe tips and signal integrity would be extremely high Every real probe however will transfer the input signal in altered form A good probe causes only minimum alterations How the probe can fulfill this requirement is mainly determined by its bandwidth and CMRR e Low loading of the input signal Every probe is a load for the signal to be measured This means that the signal to be measured changes as soon as the probe is connected A good probe should cause only a minimum change to the signal so that the function of the DUT is not adversely affected How the probe can fulfill this requirement is mainly determined by its input impe dance The parameters of a probe are usually specified for a minimally short connection between the probe and the DUT With longer connections the connection induc tance has a significant effect on the measurement The high frequency behavior of differential probes is typically characterized in the following environment The probe is connected to a differential 100 line that is fed by a source with 100 Q internal impedance and that is terminat
11. There is no need to strip the wires because the finish dis solves on its own during soldering Distance range 0 mm to 25 mm 0 mil to 1000 mil GE ee gEs aammeam HnsmmxmzEidE User Manual 1410 4538 02 0302 22 R amp SSRT ZD20 30 Connecting the Probe to the DUT Signal pin variable spacing The signal pins are held to the DUT in order to tap off the measurement signal The pins can be rotated to adjust the distance between the probe tips They are designed for various applications e g measurements on SMT resistors IC pins conductors or vias Distance range 0 mm to 10 mm 0 mil to 400 mil Adapters Adapter square pin The square pin adapter is used for plugging the probe onto pin strips with a pitch of 2 54 mm 100 mil Distance range 2 54 mm 100 mil FF Er AAA E CIT User Manual 1410 4538 02 0302 23 R amp SRT ZD20 30 Browser adapter Connecting the Probe to the DUT User Manual 1410 4538 02 0302 The spring loaded browser adapter allows handheld probing with maximum convenience Because it compensates for minor unevenness and movements it is capable of establishing a firm contact with the test point The pin distance can be set by turning the lev ers A built in stop prevents unwanted turning of the signal pins when probing Distance range 0 mm to 10 mm 0 mil to 400 mil The flex adapter is particularly well suited for creating solid contact with test points th
12. de hacer cualquier otra conexi n La instalaci n y la conexi n deber n ser efectuadas por un electricista especializado 13 En el caso de dispositivos fijos que no est n provistos de fusibles interruptor autom tico ni otros mecanismos de seguridad similares el circuito de alimentaci n debe estar protegido de modo que todas las personas que puedan acceder al producto as como el producto mismo est n a salvo de posibles da os 14 Todo producto debe estar protegido contra sobretensi n debida p ej a una ca da del rayo mediante los correspondientes sistemas de protecci n Si no el personal que lo utilice quedar expuesto al peligro de choque el ctrico 15 No debe introducirse en los orificios de la caja del aparato ning n objeto que no est destinado a ello Esto puede producir cortocircuitos en el producto y o puede causar choques el ctricos fuego o lesiones 16 Salvo indicaci n contraria los productos no est n impermeabilizados ver tambi n el cap tulo Estados operativos y posiciones de funcionamiento punto 1 Por eso es necesario tomar las medidas necesarias para evitar la entrada de l quidos En caso contrario existe peligro de choque el ctrico para el usuario o de dafios en el producto que tambi n pueden redundar en peligro para las personas 17 No utilice el producto en condiciones en las que pueda producirse o ya se hayan producido condensaciones sobre el producto o en el interior de ste como p e
13. informaci n en la secci n Funcionamiento punto 7 Palabras de se al y su significado En la documentaci n del producto se utilizan las siguientes palabras de serial con el fin de advertir contra riesgos y peligros PELIGRO identifica un peligro inminente con riesgo elevado que provocar muerte o lesiones graves si no se evita ADVERTENCIA identifica un posible peligro con riesgo medio de provocar muerte o lesiones graves si no se evita ATENCI N identifica un peligro con riesgo reducido de provocar lesiones leves o moderadas si no se evita AVISO indica la posibilidad de utilizar mal el producto AVISO M y como consecuencia dafiarlo En la documentaci n del producto se emplea de forma sin nima el t rmino CUIDADO Las palabras de serial corresponden a la definici n habitual para aplicaciones civiles en el rea econ mica europea Pueden existir definiciones diferentes a esta definici n en otras reas econ micas o en aplicaciones militares Por eso se deber tener en cuenta que las palabras de sefial aqu descritas sean utilizadas siempre solamente en combinaci n con la correspondiente documentaci n del producto y solamente en combinaci n con el producto correspondiente La utilizaci n de las palabras de sefial en combinaci n con productos o documentaciones que no les correspondan puede llevar a interpretaciones equivocadas y tener por consecuencia dafios en personas u objetos 1171 0000 52 06 P
14. it is used in accordance with its product documentation and within its performance limits see data sheet documentation the following safety instructions Using the product requires technical skills and in some cases a basic knowledge of English It is therefore essential that only skilled and specialized staff or thoroughly trained personnel with the required skills be allowed to use the product If personal safety gear is required for using Rohde amp Schwarz products this will be indicated at the appropriate place in the product documentation Keep the basic safety instructions and the product documentation in a safe place and pass them on to the subsequent users Observing the safety instructions will help prevent personal injury or damage of any kind caused by dangerous situations Therefore carefully read through and adhere to the following safety instructions before and when using the product It is also absolutely essential to observe the additional safety instructions on personal safety for example that appear in relevant parts of the product documentation In these safety instructions the word product refers to all merchandise sold and distributed by the Rohde amp Schwarz group of companies including instruments 1171 0000 52 06 Page 1 Basic Safety Instructions systems and all accessories For product specific information see the data sheet and the product documentation Symbols and safety labels Caution when han
15. micro button is located at the probe head The micro button can be configured via the base unit By pressing it the user can remotely control different functions on the base unit For details see chapter 2 2 Micro Button on page 19 R amp S ProbeMeter The R amp S ProbeMeter measures the DC voltage of the input signal directly at the probe tip It provides a continuous high precision DC voltage measurement that is independent of the settings of the oscilloscope and in parallel to the time domain measurement If activated on the base unit the measurement value is displayed on the screen of the R amp S oscilloscope For details see chapter 2 4 R amp S ProbeMe ter on page 20 The R amp S ProbeMeter records both differential and common mode DC voltages Data memory The probe includes an integrated data memory with individual probe correction parameters e g gain delay offset These correction parameters are read out and processed by the R amp S oscilloscope As a result the probe offers a very high degree of accuracy so that additional calibration procedures are not required AA A A AAA User Manual 1410 4538 02 0302 6 R amp SSRT ZD20 30 Product Description Unpacking the Instrument 1 2 Unpacking the Instrument The carrying case contains the following items R amp S RT ZD20 30 differential probe Accessory box Accessory vials User manual R amp S RT ZD20 30 data sheet Calibration certificate Document
16. other economic areas or military applications It is therefore essential to make sure that the signal words described here are always used only in connection with the related product documentation and the related product The use of signal words in connection with unrelated products or documentation can result in misinterpretation and in personal injury or material damage Operating states and operating positions The product may be operated only under the operating conditions and in the positions specified by the manufacturer without the product s ventilation being obstructed If the manufacturer s specifications are not observed this can result in electric shock fire and or serious personal injury or death Applicable local or national safety regulations and rules for the prevention of accidents must be observed in all work performed 1 Unless otherwise specified the following requirements apply to Rohde amp Schwarz products predefined operating position is always with the housing floor facing down IP protection 2X use only indoors max operating altitude 2000 m above sea level max transport altitude 4500 m above sea level A tolerance of 10 shall apply to the nominal voltage and 5 to the nominal frequency overvoltage category 2 pollution severity 2 1171 0000 52 06 Page 3 Basic Safety Instructions Do not place the product on surfaces vehicles cabinets or tables that for reasons of weight or stability are unsui
17. sd ui au 000 006 008 002 009 0 0 tut LIT TT se TT T LE HAHH FT TI INN A Ul eBe3 oA nd no wou OEAZ 14 SWI osi pue esuodsaJ days yjpimpueq dA 36 sdi o IuiuJ SdIJO OJOIW spes Huo l9SA LUD Q siaidepe xo9j Duo uid oJenbs sjojdepe SJo depe JasMoJq oys Duioeds S qeuen ul 1apjos suid eubis yous I9A uonooeuuo 5 uonooeuuoo JO ed UOIJDBUUOD JO sad JU9SI9 HIP ULM O GZ LY SYH E 104 esuodsai dags pue aun esu yipimpueq e2id A 7 e2uejonpul uomo2euuo Z G 9 81 User Manual 1410 4538 02 0302 R amp S RT ZD20 30 Measurement Principles Signal Loading of the Input Signal 5 1 3 CMRR The CMRR is very good for low frequency signals but it continuously decreases for higher frequencies Therefore the CMRR is usually specified as a function of fre quency The figure below shows a typical CMRR with a very symmetrical connection for an R amp S RT ZD20 30 differential probe An asymmetrical connection to the test point can decrease the CMRR To achieve the best possible CMRR the connection to the DUT should always be as symmetrical as possible CMRR in dB Frequency in Hz Fig 5 5 Typical CMRR of the R amp S RT ZD20 30 probe as a function of frequency 5 2 Signal Loading of the Input Signal The previous section explained the transfer function and step response of the probe This section describes how the probe influences the input signa
18. through immediate digitization of the mea sured DC voltage inside the probe The R amp S ProbeMeter measures the differential and common mode DC voltages simultaneously and without reconnecting the probe For a definition of differential A scs NN NR M 223g Ng seed User Manual 1410 4538 02 0302 20 R amp S RT ZD20 30 Putting into Operation R amp S ProbeMeter and common mode input voltages see chapter 4 Characteristics of Differential Probes on page 27 To activate the R amp S ProbeMeter gt Vertical gt Probe Setup gt Ch gt R amp S ProbeMeter on After the R amp S ProbeMeter has been activated the measured values are displayed on the screen of the oscilloscope Advantages of the R amp S ProbeMeter Enables the user to check DC voltages with different levels without having to adjust the measurement range of the oscilloscope Provides a simple means of setting the oscilloscope s trigger level and vertical scaling if a waveform is not visible Offers a unique way to detect unexpected or inadmissible common mode vol tages e g bias points measurement of common mode DC voltages without reconnecting the probe Independent of oscilloscope settings for offset position vertical scale horizontal scale and trigger True DC measurement integration time 100 ms not mathematical average of displayed waveform Measurement range 5 V offset compensation setting Maximum measure ment accuracy is achieved
19. when offset compensation is switched off High measurement accuracy and low temperature sensitivity typically 0 1 of reading over the entire temperature range EE A ce User Manual 1410 4538 02 0302 21 R amp SSRT ZD20 30 Connecting the Probe to the DUT AAA AAA 3 Connecting the Probe to the DUT This chapter describes the different ways of connecting the probe to the DUT In addition the accessories supplied are described and their use is explained In order to achieve optimum RF performance the connections should always be as short as possible Risk of injuries The included probe pins are exceptionally sharp and must be handled with extreme care To prevent injuries always use tweezers when inserting or removing pins oome solder in accessories are very fine and sensitive The probe should be stabilized by using appropriate means e g adhesive tape probe positioner in order to protect the solder joint from excessive mechanical stress Pins Signal pin solder in Use tweezers to insert the solder in pins into the signal sockets on the probe and then cut to the appropriate length Try to keep the wires as short as possible Finally stabilize the probe for example by using adhesive tape The fine wires on this adapter are best suited to making secure contact with small contact points such as SMT components or IC pins The wires have an additional insulating finish in order to prevent unwanted shorts
20. R amp SSRT ZD20 30 Active Differential Probe User Manual 1410 4538 02 0302 t Test amp Measuremen This User Manual describes the following R amp S9RT ZD models and options e R amp SYRT ZD20 1410 4409 02 e R amp SYRT ZD30 1410 4609 02 The firmware of the instrument makes use of several valuable open source software packages The most important of them are listed below together with their corresponding open source license Atmel http www atmel com dyn products tools card asp tool id 4092 BOOST Library http www boost org Boost Software v 1 Rohde amp Schwarz would like to thank the open source community for their valuable contribution to embedded computing 2012 Rohde amp Schwarz GmbH 8 Co KG Muehldorfstr 15 81671 Munich Germany Phone 49 89 41 29 0 Fax 49 89 41 29 12 164 E mail info rohde schwarz com Internet http www rohde schwarz com Printed in Germany Subject to change Data without tolerance limits is not binding R amp S is a registered trademark of Rohde amp Schwarz GmbH amp Co KG Trade names are trademarks of the owners The following abbreviations are used throughout this manual R amp S9RT ZD20 30 is abbreviated as R amp S RT ZD20 30 R amp S ProbeMeter is abbreviated as R amp S ProbeMeter R amp S9RTO is abbreviated as R amp S RTO Basic Safety Instructions Always read through and comply with the following safety instructions All plants and locatio
21. age 12 Instrucciones de seguridad elementales Estados operativos y posiciones de funcionamiento El producto solamente debe ser utilizado seg n lo indicado por el fabricante respecto a los estados operativos y posiciones de funcionamiento sin que se obstruya la ventilaci n Si no se siguen las indicaciones del fabricante pueden producirse choques el ctricos incendios y o lesiones graves con posible consecuencia de muerte En todos los trabajos deber n ser tenidas en cuenta las normas nacionales y locales de seguridad del trabajo y de prevenci n de accidentes 1 Si no se convino de otra manera es para los productos Rohde amp Schwarz v lido lo que sigue como posici n de funcionamiento se define por principio la posici n con el suelo de la caja para abajo modo de protecci n IP 2X uso solamente en estancias interiores utilizaci n hasta 2000 m sobre el nivel del mar transporte hasta 4500 m sobre el nivel del mar Se aplicar una tolerancia de 10 sobre el voltaje nominal y de 5 sobre la frecuencia nominal Categoria de sobrecarga el ctrica 2 ndice de suciedad 2 2 No situe el producto encima de superficies veh culos estantes o mesas que por sus caracter sticas de peso o de estabilidad no sean aptos para l Siga siempre las instrucciones de instalaci n del fabricante cuando instale y asegure el producto en objetos o estructuras p ej paredes y estantes Si se realiza la instalaci n de modo distinto al indica
22. alta de estanqueidad de una celda el l quido vertido no debe entrar en contacto con la piel ni los ojos Si se produce contacto lavar con agua abundante la zona afectada y avisar a un m dico En caso de cambio o recarga inadecuados las celdas o bater as que contienen electrolitos alcalinos p ej las celdas de litio pueden explotar Para garantizar la seguridad del producto las celdas o bater as solo deben ser sustituidas por el tipo Rohde amp Schwarz correspondiente ver lista de recambios Las bater as y celdas deben reciclarse y no deben tirarse a la basura dom stica Las bater as o acumuladores que contienen plomo mercurio o cadmio deben tratarse como residuos especiales Respete en esta relaci n las normas nacionales de eliminaci n y reciclaje Transporte 1 El producto puede tener un peso elevado Por eso es necesario desplazarlo o transportarlo con precauci n y si es necesario usando un sistema de elevaci n adecuado p ej una carretilla elevadora a fin de evitar lesiones en la espalda u otros dafios personales Las asas instaladas en los productos sirven solamente de ayuda para el transporte del producto por personas Por eso no est permitido utilizar las asas para la sujeci n en o sobre medios de transporte como p ej gruas carretillas elevadoras de horquilla carros etc Es responsabilidad suya fijar los productos de manera segura a los medios de transporte o elevaci n Para evitar dafios personales
23. at are hard to reach e g between two inserted boards The two wires at the tip of the flexible line are soldered to the contact points The pins on the other end of the adapter are inserted in the signal receptacles of the probe Theflex adapter reduces the probe rise time but is designed to ensure optimum settling The lines on the flex adapter are implemented as a twisted pair to minimize unwanted coupling Flex adapters are preferred over leads or clips Two different flex adapters are included 4 cm 1 6 in and 10 cm 3 9 in Distance range 0 mm to 12 mm 0 mil to 470 mil 24 R amp SRT ZD20 30 Flex adapter square pin Leads and clips Short and long lead Connecting the Probe to the DUT The flex adapter is used for plugging the probe onto pin strips with a pitch of 2 54 mm 100 mil that are hard to reach e g between two inserted boards The pins on the other end of the adapter are inserted in the signal receptacles of the probe The flexible line makes it possible to connect two or more probes to adjacent pins without the probes blocking each other The flex adapter reduces the probe rise time but is designed to ensure optimum settling The conductors on the flex adapter are implemented as a twisted pair to minimize unwanted coupling Flex adapters are preferred over leads or clips Two different flex adapters are included 4 cm 1 6 in and 10 cm 3 9 in Distance range 2 54 mm 100 mil
24. ation of calibration values if ordered 1 2 1 Inspecting the Contents e Inspect the package for damage Keep a damaged package and the cushioning material until the contents have been checked for completeness and the instrument has been tested If the packaging material shows any signs of stress notify the carrier as well as your Rohde amp Schwarz service center Keep the package and cushioning mate rial for inspection e Inspect the probe If there is any damage or defect or if the R amp S RT ZD20 30 differential probe does not operate properly notify your Rohde amp Schwarz service center e Inspect the accessories If the contents are incomplete or damaged notify your Rohde amp Schwarz service center Accessories supplied with the instrument are listed in chapter 1 4 1 Accesso ries Supplied on page 11 FG Fre re T User Manual 1410 4538 02 0302 7 R amp S RT ZD20 30 Product Description Description of the Probe 1 3 Description of the Probe The probe consists of the probe head for connection to the DUT the probe box for connection to the oscilloscope and the probe cable 1 3 1 Probe Head The small and lightweight probe head is designed for easy handling and high per formance measurements The probe head is used for connecting the probe and the DUT Different accessories for the signal and ground sockets allow the probe head to be connected to a wide range of DUTs 1 Positive signal socket 2
25. ble to compensate for common mode DC offsets using the offset compensation function For a defini tion of differential and common mode input voltages see chapter 4 Characteristics of Differential Probes on page 27 To set offset compensation on the front panel 1 Press the Vertical Position knob until the Offset setup is shown on the display 2 urn the Vertical Position knob To automatically set the offset compensation voltage using the menu 1 On the Vertical menu select Probe Setup 2 Select the channel and tap Set offset to mean QD For more details on setting the offset compensation voltage refer to the User Manual of the R amp S oscilloscope Additionally the probe offers automatic offset compensation by means of the micro button A single push on the button compensates the DC component of the mea surement signal which is particularly helpful during measurements of input signals with different DC offsets see also chapter 2 2 Micro Button on page 19 To assign Set offset to mean to the micro button gt Vertical menu gt Probe Setup gt Ch tab gt Micro button action Set offset to mean 2 4 R amp S ProbeMeter The integrated voltmeter can measure DC voltages with very high precision com pared to the oscilloscope s DC accuracy The DC measurement is performed con tinuously and in parallel to the time domain measurement of the oscilloscope High precision measurements are achieved
26. cannot use the original packaging consider the following 1 2 9i Use a sufficiently sized box Protect the probe from damage and moisture e g with bubble wrap Use some kind of protective material e g crumpled newspaper to stabilize the probe inside the box Seal the box with tape Address the package to your nearest Rohde amp Schwarz service center FF A A ce E User Manual 1410 4538 02 0302 43 R amp S9RT ZD20 30 Maintenance and Service Cleaning 6 3 Cleaning To clean the exterior of the probe use a soft cloth moistened with either distilled water or isopropyl alcohol Before using the probe again make sure to dry it com pletely Instrument damage caused by cleaning agents Cleaning agents contain substances that may damage the instrument for example solvent may damage the labeling or plastic parts Never use cleaning agents such as solvents thinners acetone etc acids bases or other substances 6 4 Calibration Interval The recommended calibration interval is two years For servicing send the probe to your nearest Rohde amp Schwarz service center see chapter 6 2 Returning the Probe for Servicing on page 43 FRF AAA e TIE User Manual 1410 4538 02 0302 44 R amp S9RT ZD20 30 Functional Check DEn 7 Functional Check The functional check is used to perform a quick check of the most important func tions of the R amp S RT ZD20 30 differential probe using simple measuremen
27. ce can potentially disturb measurements of high frequency signals as it influences the DC operating point of active compo nents This effect is negligible for the majority of applications involving the R amp S RT ZD20 30 probe due to the very high input resistance of the probe 1 MO a as A rer AAN User Manual 1410 4538 02 0302 38 R amp S RT ZD20 30 Measurement Principles Signal Loading of the Input Signal 5 2 1 2 Input Capacitance Cum The input capacitance C causes the input impedance to decrease in the medium frequency range 100 kHz to 1 0 GHz It affects the settling time of the input voltage in the case of fast transients 5 2 1 3 RF Resistance Rpr The RF resistance Rar determines the minimum input impedance and thus the maximum loading at very high frequencies above 1 0 GHz Thus the measurement result depends on the source impedance of the DUT The RF resistance Raf pre vents the input voltage from rising immediately to its final value in the case of fast transients The resulting loading of a step signal at the input of the probe is shown in the fol lowing figure Input Voltage in V 0 500 1000 1500 2000 Time in ps Fig 5 7 Signal loading caused by the R amp S RT ZD20 30 probe EE ee User Manual 1410 4538 02 0302 39 R amp S RT ZD20 30 Measurement Principles Probing Philosophy 5 2 2 Signal Loading for Non Differential Input Signals As described in chapter 4 Characteristics of Differ
28. centration Make sure that persons who use the products are physically mentally and emotionally fit enough to do so otherwise injuries or material damage may occur It is the responsibility of the employer operator to select suitable personnel for operating the products 2 Before you move or transport the product read and observe the section titled Transport 3 As with all industrially manufactured goods the use of substances that induce an allergic reaction allergens such as nickel cannot be generally excluded If you develop an allergic reaction such as a skin rash frequent sneezing red eyes or respiratory difficulties when using a Rohde amp Schwarz product consult a physician immediately to determine the cause and to prevent health problems or stress 4 Before you start processing the product mechanically and or thermally or before you take it apart be sure to read and pay special attention to the section titled Waste disposal Environmental protection item 1 5 Depending on the function certain products such as RF radio equipment can produce an elevated level of electromagnetic radiation Considering that unborn babies require increased protection pregnant women must be protected by appropriate measures Persons with pacemakers may also be exposed to risks from electromagnetic radiation The employer operator must evaluate workplaces where there is a special risk of exposure to radiation and if necessary take measu
29. cimiento de la conjuntiva o dificultades respiratorias debe avisarse inmediatamente a un m dico para investigar las causas y evitar cualquier molestia o da o a la salud Antes de la manipulaci n mec nica y o t rmica o el desmontaje del producto debe tenerse en cuenta imprescindiblemente el cap tulo Eliminaci n protecci n del medio ambiente punto 1 Ciertos productos como p ej las instalaciones de radiocomunicaci n RF pueden a causa de su funci n natural emitir una radiaci n electromagn tica aumentada Deben tomarse todas las medidas necesarias para la protecci n de las mujeres embarazadas Tambi n las personas con marcapasos pueden correr peligro a causa de la radiaci n electromagn tica El empresario operador tiene la obligaci n de evaluar y sefializar las reas de trabajo en las que exista un riesgo elevado de exposici n a radiaciones Tenga en cuenta que en caso de incendio pueden desprenderse del producto sustancias t xicas gases l quidos etc que pueden generar darios a la salud Por eso en caso de incendio deben usarse medidas adecuadas como p eJ m scaras antig s e indumentaria de protecci n 1171 0000 52 06 Page 16 Instrucciones de seguridad elementales 7 Los productos con l ser est n provistos de indicaciones de advertencia normalizadas en funci n de la clase de l ser del que se trate Los rayos l ser pueden provocar da os de tipo biol gico a causa de las propiedades de su radiaci
30. connection R amp S RTO settings Horizontal scale 10 us div Vertical scale 10 mV div Trigger source Ch1 Trigger mode Auto Run cont ACQUISITION key gt Decimation High res gt Waveform Arithmetics Average gt Average Count 16 Meas menu gt Setup gt Source Ch1 gt Main Measurement Mean gt State on CH1 key gt Offset 0 V Position 0 div Vertical menu gt Probe Setup gt Ch1 gt ProbeMeter on gt Micro button action Auto zero Measurement Check displayed values in the Measurement Results box Mean 0 V 10 mV ProbeMeter 0 V 4 mV Press the micro button The Auto Zero function automatically com pensates the zero error of the probe oscilloscope combination Check again the measurement results Mean O0 V 2 mV FENG Pre kr re User Manual 1410 4538 02 0302 47 R amp S RT ZD20 30 Functional Check DC Accuracy 7 3 DC Accuracy The gain of the probe oscilloscope system and the accuracy of the integrated DC voltmeter are checked Test setup Probe connected to CH1 of the R amp S RTO oscilloscope INPUT HI LO of the DMM connected to OUTPUT HI LO of the DC voltage source by banana leads BNC to 4 mm dual banana adapter plugged onto the banana leads on the DMM ensure that BNC shield is connected to LO Signal and ground terminal of the probe connected by mini clips to the BNC to 4 mm dual banana adapter make sure that probe ground is connected to BNC shield
31. dling heavy equipment Device fully protected by double reinforced insulation EU labeling for batteries and accumulators For additional information see section Waste disposal Environmental protection item 1 Be careful when handling EU labeling for separate collection electrostatic sensitive devices of electrical and electronic devices For additonal information see section Waste disposal Environmental protection item 2 Warning Laser radiation For additional information see section Operation item 7 1171 0000 52 06 Page 2 Basic Safety Instructions Signal words and their meaning The following signal words are used in the product documentation in order to warn the reader about risks and dangers DANGER Indicates an imminently hazardous situation which if not avoided will result in death or serious injury Indicates a potentially hazardous situation which if not avoided could result in death or serious injury Indicates a potentially hazardous situation which if not avoided could result in minor or moderate injury NOTICE Indicates the possibility of incorrect operation which can result in damage to the product In the product documentation the word ATTENTION is used synonymously These signal words are in accordance with the standard definition for civil applications in the European Economic Area Definitions that deviate from the standard definition may also exist in
32. do en la documentaci n del producto se pueden causar lesiones o en determinadas circunstancias incluso la muerte 3 No ponga el producto sobre aparatos que generen calor p ej radiadores o calefactores La temperatura ambiente no debe superar la temperatura m xima especificada en la documentaci n del producto o en la hoja de datos En caso de sobrecalentamiento del producto pueden producirse choques el ctricos incendios y o lesiones graves con posible consecuencia de muerte Seguridad el ctrica Si no se siguen o se siguen de modo insuficiente las indicaciones del fabricante en cuanto a seguridad el ctrica pueden producirse choques el ctricos incendios y o lesiones graves con posible consecuencia de muerte 1 Antes de la puesta en marcha del producto se deber comprobar siempre que la tensi n preseleccionada en el producto coincida con la de la red de alimentaci n el ctrica Si es necesario modificar el ajuste de tensi n tambi n se deber n cambiar en caso dado los fusibles correspondientes del producto 1171 0000 52 06 Page 13 Instrucciones de seguridad elementales Los productos de la clase de protecci n con alimentaci n m vil y enchufe individual solamente podr n enchufarse a tomas de corriente con contacto de seguridad y con conductor de protecci n conectado Queda prohibida la interrupci n intencionada del conductor de protecci n tanto en la toma de corriente como en el mismo producto La interru
33. duct Description Accessories and Items 1 4 2 Optional Accessories If the included accessories do not meet individual customer requirements Rohde amp Schwarz offers different accessory sets for sale Table 1 2 R amp S RT ZA4 Mini Clips Table 1 3 R amp S RT ZA5 Micro Clips Table 1 4 R amp S RT ZA6 Lead Set Lead 6 cm 2 4 in 5 This set contains short and Lead 15 cm 5 9 in 5 long leads Table 1 5 R amp S RT ZA7 Differential Pin Set Signal pin solder in This set contains the pins avail able for the R amp S RT ZD20 30 Signal pin variable spacing Browser adapter pogo pogo Browser adapter rigid pogo Adapter square pin The adapter can be used to connect the R amp S RT ZD20 30 differential probe to any other oscilloscope or any other measurement instrument e g a network or spectrum analyzer Using the USB interface of the adapter the probe can be powered and controlled from any conventional PC A AAA E TERESA User Manual 1410 4538 02 0302 13 R amp SSRT ZD20 30 Product Description FEE Accessories and Items 1 4 3 Service Accessories The following accessories are optionally available for servicing the probe Table 1 7 R amp S RT ZK1 Service Kit The R amp S RT ZK1 Service Kit is used for calibrating the R amp S RT ZD20 30 differential probe for making performance tests and for servicing The service kit includes all adapters and accessories to match the p
34. e V that may occur between the positive and negative signal pin e Atthe same time the two voltage values at each of the two signal pins V und V referenced to the common ground must not exceed a specific limit value This limitation is referred to as the operating voltage window some manufacturers also use the less precise term common mode range for the same parameter If one of these ranges is exceeded an unwanted signal clipping may occur 30 V Maximum non destructive input voltage TN A oH eee Re ne en et ee ee Oo O 3 O gt 5 a EN Y Y PRERA RAS AR AAAA RAK RRES 242 4 4 4 ALESIS ALS SHS S IS 5 V RUP ARLA Latte SS ES SSL SSE PAY AT A AP MEL hL LL LL LL PP SED SED AE AE AL hd Operating Pos input V Pos input V V O V 4 voltage Neg input v t V Ven window Neg input V pet Syre ange limit Dynamic range limit ESMALTE AT TATI TERRITORIO OM A A ee SS mn 30 V Maximum non destructive input voltage Time Fig 4 2 Operating voltage window The maximum non destructive voltage is specified as the voltage between each signal pin and ground EA Wgs xa X f User Manual 1410 4538 02 0302 29 R amp S9RT ZD20 30 Characteristics of Differential Probes mE II Nr nn Ground Connection Maximum input voltage The maximum input voltage is 30 V between each signal socket and the ground socket A higher input voltage may destroy the probe Signal clipping Only differential input
35. ed into 100 O The voltages at both inputs of the probe are always oppositely equal The following figure shows the equivalent circuit model of a probe that is connected to the DUT FF Er er Fre User Manual 1410 4538 02 0302 31 R amp S RT ZD20 30 Measurement Principles Circuit ground AR Fig 5 1 Equivalent circuit model of the R amp S RT ZD20 30 probe Table 5 1 Designations Description Differential voltage between the test point without probe connected Differential voltage at the test point with probe connected corresponds to the input voltage of the probe Differential source resistance of the DUT FF A rer Fe ed User Manual 1410 4538 02 0302 32 R amp S RT ZD20 30 Measurement Principles so Signal Integrity of the Transferred Signal 5 1 Signal Integrity of the Transferred Signal The following sections describe the effect that bandwidth connection inductance and common mode rejection ratio have on signal integrity 5 1 1 Bandwidth The bandwidth BW of a probe is one of its specific parameters The bandwidth of the probe and the bandwidth of the base unit together form the system bandwidth The following explanations refer to the probe itself but can also be applied to the entire system Gain in dB 1E6 10E6 100E6 1E9 10E9 Frequency in Hz Fig 5 2 Amplitude frequency response of the R amp S RT ZD20 30 The bandwidth e Specifies the maximum frequency at which a purely sinuso
36. ential Probes on page 27 var ious types of input signals can be measured with a differential probe Every type of input signal has an associated input impedance e For differential input signals the input impedance of the probe is the impedance between its positive and negative signal sockets e For single ended input signals the input impedance is the impedance between the positive or negative signal socket and the ground socket e Forcommon mode input signals the input impedance is the impedance between the parallel connection of the positive and negative signal sockets and the ground socket The equivalent circuit diagram in figure 5 1 can be used to determine the associated input impedance The table 5 3 provides as an example the DC input resistance for several input signals Table 5 3 DC Input Resistance for Various Input Signals Type of input signal Differential Single ended Input Resistance 500 kO 250 kO This table shows that common mode signals suffer the highest loading This char acteristic of all differential probes is particularly bothersome because common mode signals frequently have a very high source resistance e g 10 kO for conventional fail safe circuits While the input resistance achieved for common mode voltages with the R amp S RT ZD20 30 differential probe remains sufficiently high probes with lower input resistances can lead to unfavorable loading effects 5 3 Probing Philosophy The previous section
37. g 22 DC component of input signal 19 Probe DC messuremie flo eee 20 Calibration asnos coepti d 44 DC offset check sseseeeeereee AT CA A 44 Differential input voltage 21 29 Oo 112100 110 isso nieta 17 Dynamic range 6 19 29 Identification esee 17 F Returning uer eee 43 io qM 8 Functional check 45 Probe Head svada eek 8 DC accuracy cocccccccncoccncncoconnnnnnanonnnnnnos 48 ProbeMeter eseeseeeeeee 6 20 DC ONSCE qm O 47 Probing principles 31 a A 46 Product description D Offset compensation 49 S Self alignment sss 46 Test equipment 45 Self alignment check 46 G e PS 43 SI VICO Nr 14 Ground connection sss 30 Signal clipping eessssses 29 Signal integrity seesssussss 33 Signal Loading 37 Inductance nnn 34 Single ended input voltage 27 Initialization check 46 Step TESPONS escindida 34 Input capacitance 6 T Input resistance
38. g of the Input Signal 37 5 2 1 Signal Loading for Differential Input Signals 38 0 2 2 Signal Loading for Non Differential Input Signals 40 2 9 Probmg Phill SODDy susce timus ene EUR ER ODM D Ed ME 40 6 Maintenance and Service eese 43 6 1 Service NN 43 6 2 Returning the Probe for Servicing 43 0 9 ENN 44 6 4 Calibration Interval axrnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnennnnnnnnnnennnennnrn 44 f Functional GCC pen 45 A eee 46 T2 DC OS 47 Ta DERG 48 7 4 Offset CompensatiOn nrnnxnnnnnnnnunnnnnnnnnnnnnnnnnnnnnnnnunnunnunnunnunnnnnnnnnvnnenn 49 Io RE EE NE O 50 FF Er AAA e User Manual 1410 4538 02 0302 4 R amp SSRT ZD20 30 Product Description Key Features and Key Characteristics 1 Product Description 1 1 Key Features and Key Characteristics The R amp S RT ZD20 30 is a differential probe with high input impedance It allows the user to make differential voltage measurements from DC to 1 5 GHz and 3 GHz respectively Differential probes can be used for single ended and differential applications Because differential probes are equipped with two high impedance inputs they measure the voltage between any two test points Unlike with single ended probes the user does
39. he common mode voltages This is equivalent to an infinite common mode rejection ratio CMRR In contrast real probes have a finite CMRR resulting in a small part of the common mode voltage visible in the output signal The CMRR is defined as the ratio of the amplifications of differential and common mode input signals CMRR Adm A vcm Example If a differential input voltage of 1 V yields an output voltage of 100 mV Ayam 0 1 and a common mode input voltage of 1 V an output voltage of 1 mV A um 0 001 the CMRR is 100 or 40 dB A high CMRR is important if significant common mode signals are encountered at the probe input for example e DC voltages for setting the operating points of active DUTs e Different ground levels of probe and DUT e g floating DUTs e Aninterference that couples equally to both conductors of a differential trans mission line Ge et User Manual 1410 4538 02 0302 28 R amp S RT ZD20 30 Characteristics of Differential Probes A SS EEE SSS Dynamic Range and Operating Voltage Window e Probing on ground referenced signals In this case the common mode compo nent is always equal to half of the input voltage 4 2 Dynamic Range and Operating Voltage Window Two separate specifications are necessary in order to characterize the permissible input voltage range of a differential voltage probe e The dynamic range or differential mode range designates the maximum dif ferential voltag
40. idal signal is still transferred at 70 9o 3 dB of its amplitude See figure 5 2 e Specifies the transferable spectrum for other waveforms E g with square wave signals the fifth harmonic should still be within the bandwidth for a high signal integrity e Determines the minimum measurable signal rise time The rise time tise of the probe is inversely proportional to its bandwidth The following approximation applies GE AAA S User Manual 1410 4538 02 0302 33 R amp S RT ZD20 30 Measurement Principles Signal Integrity of the Transferred Signal 0 4 rise BW The figure 5 3 shows a typical step response of an R amp S RT ZD20 30 differential probe In addition to bandwidth a constant amplitude frequency response of the probe is decisive for high signal integrity The figure 5 2 shows the typical amplitude fre quency response of an R amp S RT ZD20 30 differential probe All frequency compo nents are transferred with the same gain so that the input signal is displayed without distortion norm output voltage in V Time in ps Fig 5 3 Step response of the R amp S RT ZD20 30 5 1 2 Connection Inductance The connection inductance L is caused by connecting the probe to the DUT In contrast to the probe specific bandwidth the connection inductance mainly depends on the type of connection that the user selects The connection inductance e Increases with the length of the connection and the size of the res
41. iente incluyendo las instrucciones de seguridad Guarde las instrucciones de seguridad y la documentaci n de producto en un lugar seguro y p selas a otros usuarios Utilice la sonda de voltaje solamente en el rango de medida indicado en la hoja de datos Rohde amp Schwarz no asume ninguna responsabilidad en el caso del uso inadecuado del producto Peligro de descarga el ctrica No conecte la sonda de voltaje a ninguna tensi n que supere el valor m ximo indicado en la hoja de datos En caso de incumplimiento se corre el riesgo de una descarga el ctrica Tenga cuidado en no ocasionar cortocircuitos a la hora de realizar medidas en fuentes de alta corriente de salida Los cortocircuitos pueden ocasionar lesiones o quemaduras Riesgo de lesiones por objeto puntiagudo Los pines de la sonda de voltaje activa son extremadamente puntiagudos y pueden penetrar f cilmente en la ropa y en la piel Por eso se recomienda manipularlos cuidadosamente Por ejemplo si transportan la sonda en un bolsillo o en la bolsa de herramientas utilice permanentemente la caja suministrada con la sonda Para evitar lesiones utilice una pinza o una tenaza a la hora de cambiar un pin de la sonda 1171 3200 12 E Esp 1 Page 2 Customer Support Technical support where and when you need it For quick expert help with any Rohde amp Schwarz equipment contact one of our Customer oupport Centers A team of highly qualified engineers provides telephone sup
42. ing the micro button remotely controls this specific function on the base unit For example Continuous Run and Auto Zero are commonly assigned to the micro button To assign a function to the micro button with the R amp S RTO oscilloscope gt Vertical menu gt Probe Setup gt Ch tab gt Micro button action d For more details on the available functions and settings for the micro button refer to the User Manual of the R amp S oscilloscope 2 3 Offset Compensation The Offset Compensation function can compensate a DC component of the input signal between the positive and negative input socket even in front of the active amplifier in the probe tip This is particularly helpful if single ended signals are mea sured with a differential probe for example with the negative input socket connec ted to ground These signals often have a superimposed DC component which can be compensated using the offset compensation on the probe Offset setting O V Offset setting 5 V Offset setting 5 V 10V Signal clipping D BV KELL KALAL LLL D V gt OV So os gt D 5 o B OIL III TITI IIIT ITT 10 V Time Fig 2 2 Differential offset compensation voltage for single ended measurement negative signal socket connected to ground CE User Manual 1410 4538 02 0302 19 R amp S RT ZD20 30 Putting into Operation R amp S ProbeMeter Only differential DC offsets can be compensated It is not possi
43. ircuit each other or where they can be short circuited by other conductive materials Cells and batteries must not be removed from their original packaging until they are ready to be used 4 Cells and batteries must not be exposed to any mechanical shocks that are stronger than permitted 5 Ifa cell develops a leak the fluid must not be allowed to come into contact with the skin or eyes If contact occurs wash the affected area with plenty of water and seek medical aid 6 Improperly replacing or charging cells or batteries that contain alkaline electrolytes e g lithium cells can cause explosions Replace cells or batteries only with the matching Rohde amp Schwarz type see parts list in order to ensure the safety of the product 7 Cells and batteries must be recycled and kept separate from residual waste Rechargeable batteries and normal batteries that contain lead mercury or cadmium are hazardous waste Observe the national regulations regarding waste disposal and recycling Transport 1 The product may be very heavy Therefore the product must be handled with care In some cases the user may require a suitable means of lifting or moving the product e g with a lift truck to avoid back or other physical injuries 2 Handles on the products are designed exclusively to enable personnel to transport the product It is therefore not permissible to use handles to fasten the product to or on transport equipment such as cranes
44. j al desplazarlo de un lugar fr o a otro caliente La entrada de agua aumenta el riesgo de choque el ctrico 18 Antes de la limpieza desconecte por completo el producto de la alimentaci n de tensi n p ej red de alimentaci n o bater a Realice la limpieza de los aparatos con un pa o suave que no se deshilache No utilice bajo ning n concepto productos de limpieza qu micos como alcohol acetona o diluyentes para lacas nitrocelul sicas 1171 0000 52 06 Page 15 Instrucciones de seguridad elementales Funcionamiento T El uso del producto requiere instrucciones especiales y una alta concentraci n durante el manejo Debe asegurarse que las personas que manejen el producto est n a la altura de los requerimientos necesarios en cuanto a aptitudes f sicas ps quicas y emocionales ya que de otra manera no se pueden excluir lesiones o dafios de objetos El empresario u operador es responsable de seleccionar el personal usuario apto para el manejo del producto Antes de desplazar o transportar el producto lea y tenga en cuenta el cap tulo Transporte Como con todo producto de fabricaci n industrial no puede quedar excluida en general la posibilidad de que se produzcan alergias provocadas por algunos materiales empleados los llamados al rgenos p ej el n quel Si durante el manejo de productos Rohde amp Schwarz se producen reacciones al rgicas como p ej irritaciones cut neas estornudos continuos enroje
45. ket e Negative single ended input voltage Vn Voltage between the negative signal socket and the ground socket e Common mode input voltage Vem Mean voltage of positive and negative signal sockets referred to the ground socket respectively Two of these voltages are independent values the other two can be calculated Vin V V V Vp Vo cm 9 Typically the differential and the common mode input voltages are used to describe the behavior of a differential probe A ee User Manual 1410 4538 02 0302 27 R amp S RT ZD20 30 Characteristics of Differential Probes E EEE Common Mode Rejection Ratio CMRR The output voltage V which is displayed on the base unit is generally obtained by superimposing the voltages generated from the differential mode input voltage and from the common mode input voltage Von A Vp AV vam in vem cm In this equation Agm is the amplification of the differential mode input voltage and A em IS the amplification of the common mode input voltage An ideal differential probe is expressed as um 1 and A om 0 In this case the displayed voltage exactly corresponds to the differential input voltage V between the two signal sockets and the common mode input voltage is totally supressed 4 1 Common Mode Rejection Ratio CMRR An ideal differential probe outputs a voltage that depends only on the differential input voltage V between positive and negative input and suppresses t
46. l The input signal loading caused by the probe is determined by its input impedance In general the probe causes only low signal loading because its input impedance is usually much greater than the source impedance of the test circuit GE ee qZZssssssssse2eesessH pss User Manual 1410 4538 02 0302 37 R amp S RT ZD20 30 Measurement Principles pss A eee ee Signal Loading of the Input Signal 5 2 1 Signal Loading for Differential Input Signals The figure 5 1 presents an equivalent circuit model of an R amp S RT ZD20 30 differ ential probe The differential input impedance of the probe is equal to the impedance between its positive and the negative signal socket The resulting input impe dance versus frequency is indicated in figure 5 6 10E6 4 1E6 100E3 10E3 1E3 100 Impedance in Ohm 1 e Em 10E3 100E3 1E6 10E6 100E6 1E9 10E9 Frequency in Hz Fig 5 6 Magnitude of the differential input impedance of the R amp S RT ZD20 30 probe as a function of frequency The differential input impedance varies greatly versus the frequency and is defined by the following values e Differential input resistance Rym 2 R e Differential input capacitance Cum C4 C2 2 e Differential RF resistance Raf 2 R 5 2 1 1 Input Resistance Rym The input resistance determines the loading of the DUT at DC and very low fre quencies lt 100 kHz A low input resistan
47. m injury or damage 14 Use suitable overvoltage protection to ensure that no overvoltage such as that caused by a bolt of lightning can reach the product Otherwise the person operating the product will be exposed to the danger of an electric shock 15 Any object that is not designed to be placed in the openings of the housing must not be used for this purpose Doing so can cause short circuits inside the product and or electric shocks fire or injuries 1171 0000 52 06 Page 5 Basic Safety Instructions 16 Unless specified otherwise products are not liquid proof see also section Operating states and operating positions item 1 Therefore the equipment must be protected against penetration by liquids If the necessary precautions are not taken the user may suffer electric shock or the product itself may be damaged which can also lead to personal injury 17 Never use the product under conditions in which condensation has formed or can form in or on the product e g if the product has been moved from a cold to a warm environment Penetration by water increases the risk of electric shock 18 Prior to cleaning the product disconnect it completely from the power supply e g AC supply network or battery Use a soft non linting cloth to clean the product Never use chemical cleaning agents such as alcohol acetone or diluents for cellulose lacquers Operation 1 Operating the products requires special training and intense con
48. n y debido a su concentraci n extrema de potencia electromagn tica En caso de que un producto Rohde amp Schwarz contenga un producto l ser p ej un lector de CD DVD no debe usarse ninguna otra configuraci n o funci n aparte de las descritas en la documentaci n del producto a fin de evitar lesiones p ej debidas a irradiaci n l ser Clases CEM seg n CISPR 11 Clase A dispositivo apropiado para el uso en cualquier zona excepto en reas residenciales y en aquellas zonas que se encuentran conectadas a una red de suministro de baja tensi n que alimenta un edificio de viviendas Clase B dispositivo apropiado para el uso en reas residenciales y en aquellas zonas que se encuentran conectadas a una red de suministro de baja tensi n que alimenta un edificio de viviendas Reparaci n y mantenimiento 1 El producto solamente debe ser abierto por personal especializado con autorizaci n para ello Antes de manipular el producto o abrirlo es obligatorio desconectarlo de la tensi n de alimentaci n para evitar toda posibilidad de choque el ctrico El ajuste el cambio de partes el mantenimiento y la reparaci n deber n ser efectuadas solamente por electricistas autorizados por Rohde amp Schwarz Si se reponen partes con importancia para los aspectos de seguridad p ej el enchufe los transformadores o los fusibles solamente podr n ser sustituidos por partes originales Despu s de cada cambio de partes relevan
49. nnnnnnnnnuennunnnnnnunnnnnnunnnnnnnen 10 1 4 1 Accessories Supplied ooocooncoccconcoccconconcococanoncncnnonconnonanencnnnnnnnonons 11 1 4 2 Optional ACCEOSSOTIES ooccoccoccociccnccnconcononnonnoncnonnncncnncnnonnnnnonconnonnnnanonos 13 14 3 SEM ACCOSSOLIOS eres ane 14 2 Putting into Operation eere 15 A EN 16 2 1 1 Connecting the Probe to the R amp S RTO Oscilloscope 17 2 1 2 Identification of the Probe ocoocccocccoccconcccncoconononanoonnonconnonaronanononnnoos 17 Ned PAONO ro E 18 22 MICO BIT est 19 2 9 Offset OM PENN 19 24 R amp S PDA 20 3 Connecting the Probe to the DUT 22 4 Characteristics of Differential Probes 27 4 1 Common Mode Rejection Ratio CMRR 28 FG GE A User Manual 1410 4538 02 0302 3 R amp S9RT ZD20 30 Contents 4 2 Dynamic Range and Operating Voltage Window 29 4 3 Ground ConnectioOn rnnrnnunnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnennnnnnnnnnnnnnnnnnunnn 30 5 Measurement Principles eese 31 5 1 Signal Integrity of the Transferred Signal 33 TT PM 33 9 1 2 Connection INductance rrrarrnanrnnnnrarnnernnnennnnrnnrnnnnnannnernnsennennnnennennen 34 ig CIR EE 37 5 2 Signal Loadin
50. not have to ensure that one of the test points is always at ground potential The comprehensive accessory set allows this probe to be connected to a wide vari ety of devices under test DUT Provided with special features such as the R amp S ProbeMeter and the micro button the R amp S RT ZD20 30 is designed to meet tomor row s challenges in probing Since the probe is equipped with Rohde amp Schwarz probe interface it can be con nected to any Rohde amp Schwarz base unit that is compatible with this interface When connected to the front panel of an R amp S oscilloscope the probe is controlled via the software menus of the oscilloscope Using a specially developed adapter see chapter 1 4 2 Optional Accessories on page 13 the probe can be connected to any other base unit 1 1 1 Key Characteristics The key characteristics of the probe are the following Fr Fr er Fr User Manual 1410 4538 02 0302 9 R amp S RT ZD20 30 Product Description AA rr SS aS See Key Features and Key Characteristics Bandwidth DC to 1 5 GHz R amp S RT ZD20 DC to 3 GHz R amp S RT ZD30 Dynamic range 5 V with 5 V offset capability 10 V AC Vpp Operating voltage window 5 V each pin to GND Diff input capacitance 0 6 pF Extremely low zero and gain errors throughout the entire temperature range no significant tem perature drift Micro button Rohde amp Schwarz probe interface 1 1 2 Key Features Micro button The
51. ns of the Rohde amp Schwarz group of companies make every effort to keep the safety standards of our products up to date and to offer our customers the highest possible degree of safety Our products and the auxiliary equipment they require are designed built and tested in accordance with the safety standards that apply in each case Compliance with these standards is continuously monitored by our quality assurance system The product described here has been designed built and tested in accordance with the attached EC Certificate of Conformity and has left the manufacturer s plant in a condition fully complying with safety standards To maintain this condition and to ensure safe operation you must observe all instructions and warnings provided in this manual If you have any questions regarding these safety instructions the Rohde amp Schwarz group of companies will be happy to answer them Furthermore it is your responsibility to use the product in an appropriate manner This product is designed for use solely in industrial and laboratory environments or if expressly permitted also in the field and must not be used in any way that may cause personal injury or property damage You are responsible if the product is used for any purpose other than its designated purpose or in disregard of the manufacturer s instructions The manufacturer shall assume no responsibility for such use of the product The product is used for its designated purpose if
52. o dafios en el producto siga las instrucciones de seguridad del fabricante del medio de transporte o elevaci n utilizado 1171 0000 52 06 Page 18 Instrucciones de seguridad elementales 3 Si se utiliza el producto dentro de un veh culo recae de manera exclusiva en el conductor la responsabilidad de conducir el veh culo de manera segura y adecuada El fabricante no asumir ninguna responsabilidad por accidentes o colisiones No utilice nunca el producto dentro de un veh culo en movimiento si esto pudiera distraer al conductor Asegure el producto dentro del veh culo debidamente para evitar en caso de un accidente lesiones u otra clase de da os Eliminaci n protecci n del medio ambiente 1 Los dispositivos marcados contienen una bater a o un acumulador que no se debe desechar con los residuos dom sticos sin clasificar sino que debe ser recogido por separado La eliminaci n se debe efectuar exclusivamente a trav s de un punto de recogida apropiado o del servicio de atenci n al cliente de Rohde amp Schwarz Los dispositivos el ctricos usados no se deben desechar con los residuos dom sticos sin clasificar sino que deben ser recogidos por separado Rohde amp Schwarz GmbH amp Co KG ha elaborado un concepto de eliminaci n de residuos y asume plenamente los deberes de recogida y eliminaci n para los fabricantes dentro de la UE Para desechar el producto de manera respetuosa con el medio ambiente dirijase a su ser
53. o del margen de rendimiento definido ver hoja de datos documentaci n informaciones de seguridad que siguen El uso del producto hace necesarios conocimientos t cnicos y ciertos conocimientos del idioma ingl s Por eso se debe tener en cuenta que el producto solo pueda ser operado por personal especializado o personas instruidas en profundidad con las capacidades correspondientes Si fuera necesaria indumentaria de seguridad para el uso de productos de Rohde amp Schwarz encontrar a la informaci n debida en la documentaci n del producto en el cap tulo correspondiente Guarde bien las informaciones de seguridad elementales as como la documentaci n del producto y entr guelas a usuarios posteriores 1171 0000 52 06 Page 10 Instrucciones de seguridad elementales Tener en cuenta las informaciones de seguridad sirve para evitar en lo posible lesiones o dafios por peligros de toda clase Por eso es imprescindible leer detalladamente y comprender por completo las siguientes informaciones de seguridad antes de usar el producto y respetarlas durante el uso del producto Deber n tenerse en cuenta todas las dem s informaciones de seguridad como p ej las referentes a la protecci n de personas que encontrar n en el cap tulo correspondiente de la documentaci n del producto y que tambi n son de obligado cumplimiento En las presentes informaciones de seguridad se recogen todos los objetos que distribuye el grupo de empresas Rohde amp
54. on fusibles de 16 A como m ximo utilizaci n de fusibles de mayor amperaje solo previa consulta con el grupo de empresas Rohde amp ochwarz Nunca conecte el enchufe en tomas de corriente sucias o llenas de polvo Introduzca el enchufe por completo y fuertemente en la toma de corriente La no observaci n de estas medidas puede provocar chispas fuego y o lesiones No sobrecargue las tomas de corriente los cables alargadores o las regletas de enchufe ya que esto podr a causar fuego o choques el ctricos En las mediciones en circuitos de corriente con una tensi n Uer gt 30 V se deber n tomar las medidas apropiadas para impedir cualquier peligro p ej medios de medici n adecuados seguros limitaci n de tensi n corte protector aislamiento etc 1171 0000 52 06 Page 14 Instrucciones de seguridad elementales 10 Para la conexi n con dispositivos inform ticos como un PC o un ordenador industrial debe comprobarse que stos cumplan los est ndares IEC60950 1 EN60950 1 o IEC61010 1 EN 61010 1 v lidos en cada caso 11 A menos que est permitido expresamente no retire nunca la tapa ni componentes de la carcasa mientras el producto est en servicio Esto pone a descubierto los cables y componentes el ctricos y puede causar lesiones fuego o dafios en el producto 12 Si un producto se instala en un lugar fijo se deber primero conectar el conductor de protecci n fijo con el conductor de protecci n del producto antes
55. onales son siempre fabricados y examinados segun las normas de seguridad vigentes Nuestro sistema de garant a de calidad controla constantemente que sean cumplidas estas normas El presente producto ha sido fabricado y examinado segun el certificado de conformidad adjunto de la UE y ha salido de nuestra planta en estado impecable segun los est ndares t cnicos de seguridad Para poder preservar este estado y garantizar un funcionamiento libre de peligros el usuario deber atenerse a todas las indicaciones informaciones de seguridad y notas de alerta El grupo de empresas Rohde amp Schwarz est siempre a su disposici n en caso de que tengan preguntas referentes a estas informaciones de seguridad Adem s queda en la responsabilidad del usuario utilizar el producto en la forma debida Este producto est destinado exclusivamente al uso en la industria y el laboratorio o si ha sido expresamente autorizado para aplicaciones de campo y de ninguna manera deber ser utilizado de modo que alguna persona cosa pueda sufrir dario El uso del producto fuera de sus fines definidos o sin tener en cuenta las instrucciones del fabricante queda en la responsabilidad del usuario El fabricante no se hace en ninguna forma responsable de consecuencias a causa del mal uso del producto Se parte del uso correcto del producto para los fines definidos si el producto es utilizado conforme a las indicaciones de la correspondiente documentaci n del producto y dentr
56. pci n puede tener como consecuencia el riesgo de que el producto sea fuente de choques el ctricos Si se utilizan cables alargadores o regletas de enchufe deber garantizarse la realizaci n de un examen regular de los mismos en cuanto a su estado t cnico de seguridad Si el producto no est equipado con un interruptor para desconectarlo de la red o bien si el interruptor existente no resulta apropiado para la desconexi n de la red el enchufe del cable de conexi n se deber considerar como un dispositivo de desconexi n El dispositivo de desconexi n se debe poder alcanzar f cilmente y debe estar siempre bien accesible Si p ej el enchufe de conexi n a la red es el dispositivo de desconexi n la longitud del cable de conexi n no debe superar 3 m Los interruptores selectores o electr nicos no son aptos para el corte de la red el ctrica Si se integran productos sin interruptor en bastidores o instalaciones se deber colocar el interruptor en el nivel de la instalaci n No utilice nunca el producto si est dafiado el cable de conexi n a red Compruebe regularmente el correcto estado de los cables de conexi n a red Asegurese mediante las medidas de protecci n y de instalaci n adecuadas de que el cable de conexi n a red no pueda ser dafiado o de que nadie pueda ser dafiado por l p ej al tropezar o por un choque el ctrico Solamente est permitido el funcionamiento en redes de alimentaci n TN TT aseguradas c
57. port and will work with you to find a solution to your query on any aspect of the operation programming or applications of Rohde amp Schwarz equipment Up to date information and upgrades To keep your instrument up to date and to be informed about new application notes related to your instrument please send an e mail to the Customer Support Center stating your instrument and your wish We will take care that you will get the right information Europe Africa Middle East Phone 49 89 4129 12345 customersupport rohde schwarz com North America Phone 1 888 TEST RSA 1 888 837 8772 customer support rsa rohde schwarz com Latin America Phone 1 410 910 7988 customersupport la rohde schwarz com Asia Pacific Phone 65 65 13 04 88 customersupport asia rohde schwarz com China Phone 86 800 810 8228 86 400 650 5896 customersupport china rohde schwarz com ROHDE amp SCHWARZ 1171 0500 22 06 00 R amp S9RT ZD20 30 Contents Contents T Proud Descriptio sepan nica Drica ince ia usa iuird bassa chis Rai EE VERE 5 1 1 Key Features and Key Characteristics 5 UU Ney Chata Chen SU CS etarra dan 5 NEUE Cic PPP A 6 1 2 Unpacking the Instrument ee eese 7 121 Inspecting the COEN Sv T 1 3 Description of the PrOD6 avion ir 8 TF NL 8 110 2 TODO BOX tt eee ne oe ee eee eer ee eo 8 1 4 Accessories and Items r raxrnnunnnnnnunnnnnnunnnv
58. r connector strips are implemented they must be checked on a regular basis to ensure that they are safe to use If there is no power switch for disconnecting the product from the AC supply network or if the power switch is not suitable for this purpose use the plug of the connecting cable to disconnect the product from the AC supply network In such cases always ensure that the power plug is easily reachable and accessible at all times For example if the power plug is the disconnecting device the length of the connecting cable must not exceed 3 m Functional or electronic switches are not suitable for providing disconnection from the AC supply network If products without power switches are integrated into racks or systems the disconnecting device must be provided at the system level 1171 0000 52 06 Page 4 Basic Safety Instructions 5 Never use the product if the power cable is damaged Check the power cables on a regular basis to ensure that they are in proper operating condition By taking appropriate safety measures and carefully laying the power cable ensure that the cable cannot be damaged and that no one can be hurt by for example tripping over the cable or suffering an electric shock 6 The product may be operated only from TN TT supply networks fuse protected with max 16 A higher fuse only after consulting with the Rohde amp Schwarz group of companies 7 Do not insert the plug into sockets that are dusty or di
59. res to avert the potential danger 1171 0000 52 06 Page 6 Basic Safety Instructions 6 Should a fire occur the product may release hazardous substances gases fluids etc that can cause health problems Therefore suitable measures must be taken e g protective masks and protective clothing must be worn Laser products are given warning labels that are standardized according to their laser class Lasers can cause biological harm due to the properties of their radiation and due to their extremely concentrated electromagnetic power If a laser product e g a CD DVD drive is integrated into a Rohde amp Schwarz product absolutely no other settings or functions may be used as described in the product documentation The objective is to prevent personal injury e g due to laser beams EMC classes in line with CISPR 11 Class A Equipment suitable for use in all environments except residential environments and environments that are directly connected to a low voltage supply network that supplies residential buildings Class B Equipment suitable for use in residential environments and environments that are directly connected to a low voltage supply network that supplies residential buildings Repair and service Ts The product may be opened only by authorized specially trained personnel Before any work is performed on the product or before the product is opened it must be disconnected from the AC supply network Othe
60. robe read the applicable manual including the safety instructions Keep the safety instructions and the product documentation in a safe place and pass them on to other users Use active voltage probes exclusively within the measurement ranges specified in the applicable data sheets Rohde amp Schwarz accepts no responsibility for misuse of the product Use only the accessories supplied with the active voltage probe Risk of electric shock Do not connect an active voltage probe to any voltage that exceeds the maximum permissible input voltage specified in the data sheet Non compliance with this instruction carries the risk of an electric shock Make sure not to cause any short circuits when performing measurements on sources with high output currents Short circuits may cause injuries or burns Risk of injury caused by pointed object The pins of the active voltage probes are extremely pointed and can easily penetrate clothes and the skin Therefore handle the probe pins with great care When transporting an active voltage probe e g when carrying it in a pocket or tool bag always use the box supplied with the probe To exchange a probe pin use tweezers or pliers to avoid injuries 1171 3200 12 E Esp 1 Page 1 Informaciones de seguridad para el uso de sondas de voltaje activas A la hora de manejar una sonda de voltaje activa es necesario seguir las siguientes instrucciones de uso b sicas Lea primero el manual de manejo correspond
61. robe to the required measuring instruments The R amp S RT ZD20 30 Service Manual is included in the service kit CD ROM The Service Manual contains a detailed description of the performance test for verifying the probe speci fications All service accessories and items can be ordered from your Rohde amp Schwarz service center A A AAA DEA User Manual 1410 4538 02 0302 14 R amp S RT ZD20 30 Putting into Operation 2 Putting into Operation The R amp S RT ZD20 30 differential probe has been designed to withstand a moderate amount of physical and electrical stress You should treat the probe with care It can be damaged if excessive force is applied to the probe tip Exercise care to prevent the probe from receiving mechanical shock Always handle the probe by the probe head or probe box Avoid putting excessive strain on the probe cable or exposing it to sharp bends otore the probe in a shock resistant case such as the foam lined shipping case that came with the probe Voltages above the specified limits of the R amp S RT ZD20 30 differential probe may damage the probe tip amplifier Do not exceed the specified limits During operation the probe slightly heats up This is normal behavior and not a sign of malfunction FF AAA a O User Manual 1410 4538 02 0302 15 Risk of damaging electronic components To avoid damage of electronic components the operational site must be pro tected against electros
62. rty Insert the plug firmly and all the way into the socket provided for this purpose Otherwise sparks that result in fire and or injuries may occur 8 Do not overload any sockets extension cords or connector strips doing so can cause fire or electric shocks 9 For measurements in circuits with voltages Vms gt 30 V suitable measures e g appropriate measuring equipment fuse protection current limiting electrical separation insulation should be taken to avoid any hazards 10 Ensure that the connections with information technology equipment e g PCs or other industrial computers comply with the IEC60950 1 EN60950 1 or IEC61010 1 EN 61010 1 standards that apply in each case 11 Unless expressly permitted never remove the cover or any part of the housing while the product is in operation Doing so will expose circuits and components and can lead to injuries fire or damage to the product 12 If a product is to be permanently installed the connection between the protective conductor terminal on site and the product s protective conductor must be made first before any other connection is made The product may be installed and connected only by a licensed electrician 13 For permanently installed equipment without built in fuses circuit breakers or similar protective devices the supply circuit must be fuse protected in such a way that anyone who has access to the product as well as the product itself is adequately protected fro
63. rwise personnel will be exposed to the risk of an electric shock Adjustments replacement of parts maintenance and repair may be performed only by electrical experts authorized by Rohde amp Schwarz Only original parts may be used for replacing parts relevant to safety e g power switches power transformers fuses A safety test must always be performed after parts relevant to safety have been replaced visual inspection protective conductor test insulation resistance measurement leakage current measurement functional test This helps ensure the continued safety of the product Batteries and rechargeable batteries cells If the information regarding batteries and rechargeable batteries cells is not observed either at all or to the extent necessary product users may be exposed to the risk of explosions fire and or serious personal injury and in some cases death Batteries and rechargeable batteries with alkaline electrolytes e g lithium cells must be handled in accordance with the EN 62133 standard 1171 0000 52 06 Page 7 Basic Safety Instructions 1 Cells must not be taken apart or crushed 2 Cells or batteries must not be exposed to heat or fire Storage in direct sunlight must be avoided Keep cells and batteries clean and dry Clean soiled connectors using a dry clean cloth 3 Cells or batteries must not be short circuited Cells or batteries must not be stored in a box or in a drawer where they can short c
64. s made clear that probes exert a load on the signal to be mea sured and change its characteristic The signal at the test point where the probe makes contact V is therefore different from the signal that was present before the probe was connected Vs This effect cannot be avoided and occurs with all real probes independent of type and manufacturer FF Er AAA E IEA User Manual 1410 4538 02 0302 40 R amp S RT ZD20 30 Measurement Principles Probing Philosophy This has resulted in a difference of opinion as to which of the following two signals should be output by the probe 1 The initial signal that is not loaded by the probe Vs and that corresponds to the signal at the test point without the probe being connected 2 The input signal that is additionally loaded with the input impedance of the probe Vin and that is actually present between the probe tips Both approaches are physically correct and have their individual advantages and disadvantages In theory it is even possible to mathematically convert the two measurement results into each other but only by performing a complex transfor mation to and from the frequency domain Probe manufacturers will use one or the other of these two approaches Rohde amp Schwarz has decided in favor of the user friendly approach In our opinion most users want to know the signal present in the DUT before it was altered by the influence caused by the probe After all users want
65. signals are detected by the probe and displayed by the base unit Common mode signals are suppressed by the probe Therefore the user does not initially recognize that the operating voltage window is exceeded owing to inadmissible common mode voltages If unexpected clip ping occurs check the positive or negative input voltage relative to ground In addition measuring the common mode input voltage using the R amp S Pro beMeter is a convenient way to detect breaches of the operating voltage win dow owing to excess DC common mode voltages 4 3 Ground Connection It is typically not necessary to connect the ground socket of the probe to the ground of the DUT as long as the DUT itself is grounded If the ground of the DUT is floating such as in the case of battery operation high static potentials between the DUT ground and the probe ground can result in the operating voltage window of the probe being exceeded In this case the probe ground should be connected to the DUT ground The ground connection can also affect the CMRR of the probe Problems with unwanted common mode signals can often be improved by adding a ground con nection FF A A ce A User Manual 1410 4538 02 0302 30 R amp S RT ZD20 30 Measurement Principles 9 Measurement Principles The R amp S RT ZD20 30 differential probe provides an electrical connection between the DUT and the oscilloscope The probe transfers the voltage of the electrical signal tapped off the
66. t equip ment The following functions are checked e Initialization e DC Offset e DC Accuracy e Offset The functional check is not suitable for verifying compliance with the probe speci fications since the test results are influenced by the oscilloscope used To verify compliance with the probe specifications it is necessary to run an inde pendent performance test This test is described in detail in the R amp S RT ZD20 30 service manual The performance test also requires the R amp S RT ZK1 service kit All base unit settings described here refer to an R amp S RTO oscilloscope The use of other oscilloscopes may result in different settings and menus The following test description always refers to channel 1 CH1 as the refer ence channel The test can also be performed on any other channel of the R amp S RTO oscilloscope Test equipment The following list contains the equipment required for the functional check Table 7 1 Required test equipment DC voltage source 5 V floating output Keithley 2420 2601 source meter Digital multimeter DMM 12 V to 12 V Agilent 34401A accuracy x 0 01 9o of measured value FEE EEE LC id User Manual 1410 4538 02 0302 45 R amp S9RT ZD20 30 Functional Check m M J UMmEE Initialization BNC to 4 mm dual banana Pomona Model 1269 adapter Two banana leads red black banana leads
67. table for this purpose Always follow the manufacturer s installation instructions when installing the product and fastening it to objects or structures e g walls and shelves An installation that Is not carried out as described in the product documentation could result in personal injury or even death Do not place the product on heat generating devices such as radiators or fan heaters The ambient temperature must not exceed the maximum temperature specified in the product documentation or in the data sheet Product overheating can cause electric shock fire and or serious personal injury or even death Electrical safety If the information on electrical safety is not observed either at all or to the extent necessary electric shock fire and or serious personal injury or death may occur 1 Prior to switching on the product always ensure that the nominal voltage setting on the product matches the nominal voltage of the AC supply network If a different voltage is to be set the power fuse of the product may have to be changed accordingly In the case of products of safety class I with movable power cord and connector operation is permitted only on sockets with a protective conductor contact and protective conductor Intentionally breaking the protective conductor either in the feed line or in the product itself is not permitted Doing so can result in the danger of an electric shock from the product If extension cords o
68. tatic discharge ESD Wrist strap with cord Y Aae mm Y f Building ground ac GH L Floor mat Heel strap Ground connection of operational site The following two methods of ESD protection may be used together or sep arately e Wrist strap with cord to ground connection e Conductive floor mat and heel strap combination 2 1 Installation This section provides a quick introduction to the use of the R amp S RT ZD20 30 dif ferential probe R amp S RT ZD20 30 Putting into Operation Installation d All settings of the base unit described in this section refer to the R amp S RTO oscilloscope If any other oscilloscope is used differences in settings and menu navigation may be possible 2 1 1 Connecting the Probe to the R amp S RTO Oscilloscope The R amp S RT ZD20 30 differential probe has been designed for use with R amp S RTO oscilloscopes Connect the probe box 1 to the Rohde amp Schwarz probe interface of the base unit 2 The probe will snap in when connected properly to the port Todisconnect press the release button 3 and pull the probe box away from the front panel of the base unit Fig 2 1 Connecting the probe to the R amp S RTO oscilloscope 2 1 2 Identification of the Probe When the probe is connected to the oscilloscope the oscilloscope recognizes the probe and reads out the probe specific parameters The oscilloscope settings for atten
69. tes para la seguridad deber realizarse un control de seguridad control a primera vista control del conductor de protecci n medici n de resistencia de aislamiento medici n de la corriente de fuga control de funcionamiento Con esto queda garantizada la seguridad del producto Bater as y acumuladores o celdas Si no se siguen o se siguen de modo insuficiente las indicaciones en cuanto a las bater as y acumuladores o celdas pueden producirse explosiones incendios y o lesiones graves con posible consecuencia de muerte El manejo de bater as y acumuladores con electrolitos alcalinos p ej celdas de litio debe seguir el est ndar EN 62133 1171 0000 52 06 Page 17 Instrucciones de seguridad elementales No deben desmontarse abrirse ni triturarse las celdas Las celdas o bater as no deben someterse a calor ni fuego Debe evitarse el almacenamiento a la luz directa del sol Las celdas y bater as deben mantenerse limpias y secas Limpiar las conexiones sucias con un pa o seco y limpio Las celdas o bater as no deben cortocircuitarse Es peligroso almacenar las celdas o bater as en estuches o cajones en cuyo interior puedan cortocircuitarse por contacto rec proco o por contacto con otros materiales conductores No deben extraerse las celdas o bater as de sus embalajes originales hasta el momento en que vayan a utilizarse Las celdas o bater as no deben someterse a impactos mec nicos fuertes indebidos En caso de f
70. the product 3 If products or their components are mechanically and or thermally processed in a manner that goes beyond their intended use hazardous substances heavy metal dust such as lead beryllium nickel may be released For this t reason the product may only be disassembled by specially trained personnel Improper disassembly may be hazardous to your health National waste disposal regulations must be observed 4 f handling the product releases hazardous substances or fuels that must be disposed of in a special way e g coolants or engine oils that must be replenished regularly the safety instructions of the manufacturer of the hazardous substances or fuels and the applicable regional waste disposal regulations must be observed Also observe the relevant safety instructions in the product documentation The improper disposal of hazardous substances or fuels can cause health problems and lead to environmental damage For additional information about environmental protection visit the Rohde amp Schwarz website 1171 0000 52 06 Page 9 Instrucciones de seguridad elementales Es imprescindible leer y cumplir las siguientes instrucciones e informaciones de seguridad El principio del grupo de empresas Rohde amp Schwarz consiste en tener nuestros productos siempre al d a con los est ndares de seguridad y de ofrecer a nuestros clientes el m ximo grado de seguridad Nuestros productos y todos los equipos adici
71. to characterize their own DUTs not the Rohde amp Schwarz probe As long as measurements are carried out in a 100 O or a comparable environment the signal displayed on the oscilloscope screen is always a direct representation of the unloaded signal VS as can be seen in figure 5 8 FRF Er er FE User Manual 1410 4538 02 0302 41 Probing Philosophy Input Output voltage in mV 0 100 200 300 400 500 600 700 800 900 1000 Time in ps Fig 5 8 Unloaded and loaded input signal and step response using the example of RT ZS30 R amp S9RT ZD20 30 Maintenance and Service 6 Service Strategy Maintenance and Service 6 1 Service Strategy The R amp S RT ZD20 30 differential probe is a high precision high performance instrument that extends the limits of today s technological possibilities Like all Rohde amp Schwarz instruments the R amp S RT ZD20 30 differential probe is of high quality and requires only minimum service and repair However if the probe needs to be serviced contact your Rohde amp Schwarz service center Return a defective probe to the Rohde amp Schwarz service center for diagnosis and exchange You can return the R amp S RT ZD20 30 differential probe for calibration The service personnel will then perform the required tests 6 2 Returning the Probe for Servicing Use the original packaging to return the R amp S RT ZD20 30 differential probe to your Rohde amp Schwarz service center If you
72. uation and offset are automatically adjusted FE re Er PE User Manual 1410 4538 02 0302 17 R amp S RT ZD20 30 Putting into Operation Installation As soon as the probe is connected to the oscilloscope and the settings are adjusted the waveform is shown for the channel to which the probe is connected To display probe specific settings and information On the Vertical menu select Probe Setup and select the correct channel tab 2 1 3 Auto Zero This procedure performs an automatic correction of the zero error displayed on the oscilloscope s screen The waveform is set to 0 V on the horizontal centerline of the oscilloscope To perform the Auto Zero function using the micro button see also chapter 2 2 Micro Button on page 19 1 Connect the probe to the R amp S RTO oscilloscope 2 Configure the micro button function on the R amp S RTO Vertical menu gt Probe Setup gt Ch tab gt Micro button action Auto zero 3 Short the signal pins and the ground pin together 4 Press the micro button Alternatively Auto Zero can be started in the dialog box of the R amp S RTO gt Vertical menu gt Probe Setup gt Ch tab gt Auto zero C se User Manual 1410 4538 02 0302 18 R amp S RT ZD20 30 Putting into Operation Micro Button 2 2 Micro Button The micro button provides easy and quick access to important functions of the R amp S RTO After a function has been assigned press
73. ulting loop area A See figure 5 4 A ep User Manual 1410 4538 02 0302 34 R amp S RT ZD20 30 Measurement Principles Signal Integrity of the Transferred Signal Reduces the usable bandwidth and causes ringing with signals having a short rise time due a series resonance with the input capacitance e Should be as small as possible short lead length in order to maintain high signal integrity NN e KA L proportional to A l m 2 TT Lon i Co BW proportional to Fig 5 4 Ground connection and connection inductance using the example of R amp S RT ZD20 30 The table 5 2 shows different types of connections between the probe and DUT as well as the associated connection inductance L The table also includes typical bandwidth values rise time values and the step responses for each connection in conjunction with an R amp S RT ZD30 For an R amp S RT ZD20 typical bandwidth and rise time values are smaller and limited to 1 5 GHz or 250 ps respectively A U NWNWNWgexdHNH EHE ERU User Manual 1410 4538 02 0302 35 les incip Measurement Pr R amp SRT ZD20 30 Signal Integrity of the Transferred Signal SU Ul SWI Ul y z WD y peaj Ul 9 L W y UI Japjos 1e3depe xa EE PS O A A M IZA V AT gt Re VJ NTN BEEN A f la SU OE JJ NJ 06 OL ZHIN 002 au Bunes Buo lan ZHIN 00S A ut eBeyjoA jndjno wou
74. vicio de atenci n al cliente de Rohde amp Schwarz Si se trabaja de manera mec nica y o t rmica cualquier producto o componente m s all del funcionamiento previsto pueden liberarse sustancias peligrosas polvos con contenido de metales pesados como p ej plomo berilio o n quel Por eso el producto solo debe ser desmontado por personal especializado con formaci n adecuada Un desmontaje inadecuado puede ocasionar dafios para la salud Se deben tener en cuenta las directivas nacionales referentes a la eliminaci n de residuos En caso de que durante el trato del producto se formen sustancias peligrosas o combustibles que deban tratarse como residuos especiales p ej refrigerantes o aceites de motor con intervalos de cambio definidos deben tenerse en cuenta las indicaciones de seguridad del fabricante de dichas sustancias y las normas regionales de eliminaci n de residuos Tenga en cuenta tambi n en caso necesario las indicaciones de seguridad especiales contenidas en la documentaci n del producto La eliminaci n incorrecta de sustancias peligrosas o combustibles puede causar da os a la salud o da os al medio ambiente oe puede encontrar m s informaci n sobre la protecci n del medio ambiente en la p gina web de Rohde amp Schwarz 1171 0000 52 06 Page 19 Safety Instructions for Active Voltage Probes When handling active voltage probes the following basic rules must be observed Prior to using an active voltage p

RT-ZD20/30 User Manual

Contents

Download Pdf Manuals

Related Search

Related Contents