® R&S RT-ZS10E/10/20/30 Active Voltage Probe User Manual (>:SO2) Version 07 User Manual 1410353102
This User Manual describes the following R&S®RT-ZS models and options: ● R&S®RT-ZS10 (1410.4080.02) ● R&S®RT-ZS10E (1418.7007.02) ● R&S®RT-ZS20 (1410.3502.02) ● R&S®RT-ZS30 (1410.4309.02) © 2019 Rohde & Schwarz GmbH & Co. KG Mühldorfstr. 15, 81671 München, Germany Phone: +49 89 41 29 - 0 Fax: +49 89 41 29 12 164 Email: info@rohde-schwarz.com Internet: www.rohde-schwarz.com Subject to change – Data without tolerance limits is not binding. R&S® is a registered trademark of Rohde & Schwarz GmbH & Co. KG.
Safety Instructions Instrucciones de seguridad Risk of injury and instrument damage The instrument must be used in an appropriate manner to prevent personal injury or instrument damage. ● Do not open the instrument casing. ● Read and observe the "Basic Safety Instructions" delivered as printed brochure with the instrument. ● Read and observe the safety instructions in the following sections. Note that the data sheet may specify additional operating conditions.
Safety Instructions - Informaciones de seguridad Safety Instructions for Active Voltage Probes When handling active voltage probes, the following basic rules must be observed. Prior to using an active voltage probe, 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.
Instructions - Instrucciones Instructions for Electrostatic Discharge Protection Risk of damaging electronic components To avoid damage of electronic components, the operational site must be protected against electrostatic discharge (ESD). Wrist strap with cord Floor mat Heel strap Ground connection of operational site The following two methods of ESD protection may be used together or separately: , Wrist strap with cord to ground connection , Conductive floor mat and heel strap combination 1171.
Customer Support Technical support – where and when you need it For quick, expert help with any Rohde & Schwarz equipment, contact one of our Customer Support Centers. A team of highly qualified engineers provides telephone support and will work with you to find a solution to your query on any aspect of the operation, programming or applications of Rohde & Schwarz equipment.
R&S®RT-ZS10E/10/20/30 Contents Contents 1 Product Description.............................................................. 5 1.1 Key Features and Key Characteristics............................................... 5 1.1.1 Key Characteristics................................................................................. 5 1.1.2 Key Features...........................................................................................6 1.1.3 R&S RT-ZS10E........................................................
R&S®RT-ZS10E/10/20/30 Contents 4.1 Signal Integrity of the Transferred Signal.........................................27 4.1.1 Bandwidth............................................................................................. 27 4.1.2 Connection Inductance......................................................................... 29 4.2 Signal Loading of the Input Signal.................................................... 32 4.2.1 Input Impedance..........................................................
R&S®RT-ZS10E/10/20/30 Product Description Key Features and Key Characteristics 1 Product Description 1.1 Key Features and Key Characteristics The R&S RT‑ZS10/20/30 is a single-ended active voltage probe with high input impedance. It is used for ground-referenced voltage measurements from DC to 1.0 GHz, 1.5 GHz and 3 GHz, respectively. The comprehensive accessory set allows this probe to be connected to a wide variety of devices under test (DUT).
R&S®RT-ZS10E/10/20/30 Product Description Key Features and Key Characteristics Bandwidth DC to 1 GHz (R&S RT-ZS10) DC to 1.5 GHz (R&S RT-ZS20) DC to 3 GHz (R&S RT-ZS30) Dynamic range ±8 V with ±12 V offset capability 16 V AC (Vpp) Maximum non-destructive input voltage ±30 V Input resistance 1 MΩ Input capacitance 0.8 pF R&S ProbeMeter, measurement error <0.
R&S®RT-ZS10E/10/20/30 Product Description Unpacking 1.1.3 R&S RT-ZS10E The R&S RT-ZS10E probe is a cost-efficient alternative to the R&S RT-ZS10 probe. The electrical specifications of both probes are identical. The two probes are of the same high quality, for example, in terms of frequency response, dynamic range, input resistance, input capacitance and zero and gain error.
R&S®RT-ZS10E/10/20/30 Product Description Description of the Probe 1.2.1 Inspecting the Contents ● Inspect the package for damage. Keep the package and the cushioning material until the contents have been checked for completeness and the device has been tested. If the packaging material shows any signs of stress, notify the carrier and your Rohde & Schwarz service center. Keep the package and cushioning material for inspection. ● Inspect the probe.
R&S®RT-ZS10E/10/20/30 Product Description Description of the Probe (1) Signal socket (2) Ground socket (3) Micro button The accessories supplied for the probe head sockets are listed in Chapter 1.4.1, "Accessories Supplied", on page 10. 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. 1.3.2 Probe Box The probe box connects the probe and the oscilloscope via the Rohde & Schwarz probe interface.
R&S®RT-ZS10E/10/20/30 Product Description Accessories and Items 1.4 Accessories and Items The figure below shows all accessories that are available for the R&S RT‑ZS10/20/30 active voltage probe. Figure 1-1: Available accessories 1.4.1 Accessories Supplied The following table shows the accessories supplied with the R&S RT‑ZS10/20/30 active voltage probe. Table 1-1: Accessories supplied Item Quantity Description ZS10/20/30 ZS10E 10 5 User Manual 1410.3531.
R&S®RT-ZS10E/10/20/30 Product Description Accessories and Items Item Quantity Description 5 2 Ground pin, pogo 10 2 Ground pin, solderable, offset 2 - Ground adapter, square pin 2 - Lead, 6 cm / 2.4 in 2 1 Lead, 15 cm / 5.9 in 2 1 Mini clip 2 - Micro clip User Manual 1410.3531.
R&S®RT-ZS10E/10/20/30 Product Description Accessories and Items Item Quantity Description 1 1 Marker band kit 1 - Carrying case with foam inlay For a list of spare parts, see Chapter 5.6, "Spare Parts", on page 38. 1.4.2 Optional Accessories If the delivered accessories do not meet individual customer requirements, Rohde & Schwarz offers different accessory sets for sale. The order numbers are provided in the data sheet.
R&S®RT-ZS10E/10/20/30 Product Description Accessories and Items Table 1-3: R&S RT-ZA3 pin set Item Quantity Signal pin Ground pin, pogo Ground pin, solderable, offset Ground adapter, square pin Marker band kit 20 5 20 2 1 Description Contains the pins available for the R&S RT‑ZS10/20/30. Table 1-4: R&S RT-ZA4 mini clips Item Quantity Mini clip 10 Description Contains mini clips. Table 1-5: R&S RT-ZA5 micro clips Item Quantity Micro clip 4 Description Contains micro clips.
R&S®RT-ZS10E/10/20/30 Product Description Accessories and Items Table 1-8: Service accessories Item Description R&S RT-ZK1 The service kit is used to calibrate the probe, to do performance tests, and for servicing. The service kit includes all adapters and accessories to connect the probe to the required measuring instruments.
R&S®RT-ZS10E/10/20/30 2 Putting into Operation Putting into Operation The probe is designed for usage with oscilloscopes that have a Rohde & Schwarz probe interface. Supported Rohde & Schwarz oscilloscopes are listed in the probe's data sheet. Read and observe the "Basic Safety Instructions" that are delivered with the probe as a printed brochure. Also, read and observe the safety instructions of the oscilloscope the probe is connected to.
R&S®RT-ZS10E/10/20/30 Putting into Operation Connecting the Probe to the Oscilloscope During usage, the probe slightly heats up. Warming is normal behavior and not a sign of malfunction. Damage caused by electrostatic discharge Electrostatic discharge (ESD) can damage the electronic components of the probe and the instrument, and also the device under test (DUT).
R&S®RT-ZS10E/10/20/30 Putting into Operation Using the Probe ► To disconnect the probe: a) Press and hold the release button (3). b) Pull the probe box away from the oscilloscope. 2.2 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 attenuation and offset are automatically adjusted.
R&S®RT-ZS10E/10/20/30 Putting into Operation Using the Probe 4. Adjust the zero position of the waveform using the appropriate function of the oscilloscope ("AutoZero", "Zero Adjust" or similar). The waveform is set to 0 V on the horizontal centerline of the oscilloscope. 2.3.2 Micro Button The micro button provides easy and quick access to important functions of the Rohde & Schwarz oscilloscope.
R&S®RT-ZS10E/10/20/30 Putting into Operation Using the Probe Figure 2-2: Offset compensation voltage and dynamic range There are several ways to set the offset compensation: ● Use the vertical knob at the oscilloscope if its function is set to offset. ● Enter the offset value in the channel settings or probe settings on the R&S RTx. ● Use the micro button to measure input signals with different DC offsets: assign "Set offset to mean" to the micro button. See also Chapter 2.3.
R&S®RT-ZS10E/10/20/30 Putting into Operation Using the Probe When the R&S ProbeMeter is active, the measured values are displayed on the oscilloscope. The R&S ProbeMeter state is part of the probe settings of the channel to which the probe is connected. For details, refer to the user manual of the Rohde & Schwarz oscilloscope. Advantages of the R&S ProbeMeter: ● Measures DC voltages of different levels, no need to adjust the measurement range of the oscilloscope.
R&S®RT-ZS10E/10/20/30 3 Connecting the Probe to the DUT Connecting the Probe to the DUT This chapter describes the different ways of connecting the probe to the DUT. In addition, the usage of the supplied accessories is explained. To achieve optimum RF performance, the connections must be as short as possible. If long connections cannot be avoided, they have to be preferably used for the ground socket.
R&S®RT-ZS10E/10/20/30 Connecting the Probe to the DUT Ground pin, pogo The spring-loaded ground pin allows handheld probing. Because this ground pin compensates for minor unevenness and movements, it can establish a firm contact with the test point. It fits into the ground socket of the probe head. The distance to the signal pin can be varied by turning the ground pin.
R&S®RT-ZS10E/10/20/30 Connecting the Probe to the DUT Ground adapter, square pin The ground adapter is used for plugging the probe onto pin strips with 0.64 mm square pins (typical pitch 2.54 mm, 100 mil). The adapter is plugged onto the ground and signal socket of the probe. Distance: 2.54 mm (100 mil) Leads Short and long lead 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 socket or the ground socket.
R&S®RT-ZS10E/10/20/30 Connecting the Probe to the DUT Clips 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. Micro clip 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. User Manual 1410.3531.
R&S®RT-ZS10E/10/20/30 4 Measurement Principles Measurement Principles The R&S RT‑ZS10/20/30 active voltage probe provides an electrical connection between the DUT and the oscilloscope. The probe transfers the voltage of the electrical signal tapped off the DUT to the oscilloscope, where it is displayed graphically.
R&S®RT-ZS10E/10/20/30 Measurement Principles Figure 4-1: Equivalent circuit model of the R&S RT‑ZS10/20/30 probe Table 4-1: Designations Abbreviation Description VS Voltage at the test point without probe connected Vin Voltage at the test point with probe connected, corresponds to the input voltage of the probe RS Source resistance of the DUT RL Load resistance of the DUT Rin DC input resistance Cin Input capacitance of the probe RRF RF input resistance of the probe Lcon Parasitic inducta
R&S®RT-ZS10E/10/20/30 Measurement Principles Signal Integrity of the Transferred Signal 4.1 Signal Integrity of the Transferred Signal The following sections describe the effect that bandwidth and connection inductance have on signal integrity. 4.1.1 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.
R&S®RT-ZS10E/10/20/30 Measurement Principles Signal Integrity of the Transferred Signal ● Determines the minimum measurable signal rise time. The rise time trise of the probe is inversely proportional to its bandwidth. The following approximation applies: t rise 0 .4 BW In addition to bandwidth, a constant amplitude/frequency response of the probe is decisive for high signal integrity. The Figure 4-2 shows the typical amplitude/ frequency response of an R&S RT‑ZS10/20/30 active voltage probe.
R&S®RT-ZS10E/10/20/30 Measurement Principles Signal Integrity of the Transferred Signal 4.1.2 Connection Inductance The connection inductance Lcon is caused by connecting the probe to the DUT. In contrast to the probe-specific bandwidth, the connection inductance mainly depends on the selected type. The connection inductance: ● Increases with the length of the connection and the size of the resulting loop area A. See Figure 4-4.
Ground lead Ground lead Signal pin Clip / Lead 1. 2. User Manual 1410.3531.02 ─ 07 3. ~60 nH ~20 nH ~4 nH Ground pin Signal pin Type of connection Signal socket No Connection Ground inductance Lcon socket Connection Rise time 700 MHz > 1 ns RT-ZS10: 1.0 GHz RT-ZS10: < 400 ps RT-ZS20: 1.2 GHz RT-ZS20: < 300 ps RT-ZS30: 1.3 GHz RT-ZS30: < 270 ps RT-ZS10: 1.0 GHz RT-ZS10: < 350 ps RT-ZS20: 1.5 GHz RT-ZS20: < 250 ps RT-ZS30: 3.
R&S®RT-ZS10E/10/20/30 Measurement Principles Signal Integrity of the Transferred Signal Vs Vout solderable pin Vout pogo pin 350 Input/Output voltage in mV 300 250 200 150 100 50 0 0 100 200 300 400 500 600 700 800 900 1000 Time in ps Figure 4-5: Step response of the R&S RT-ZS30 with a type 1 connection Vs Vout ground lead 15 cm Vout ground lead 6 cm Input/Output voltage in mV 350 300 250 200 150 100 50 0 0 100 200 300 400 500 600 700 800 900 1000 Time in ps Figure 4-6:
R&S®RT-ZS10E/10/20/30 Measurement Principles Signal Loading of the Input Signal Vs Vout signal clip Vout signal lead 350 Input/Output voltage in mV 300 250 200 150 100 50 0 0 1 2 3 4 5 6 Time in ns Figure 4-7: Step response of the R&S RT-ZS30 with a type 3 connection 4.2 Signal Loading of the Input Signal The previous section dealt with the transfer function and step response of the probe. This section describes how the probe influences the input signal. 4.2.
R&S®RT-ZS10E/10/20/30 Measurement Principles Signal Loading of the Input Signal The resulting input impedance versus frequency is indicated in Figure 4-8. The trace shows three characteristic areas that can be assigned to Rin, Cin and RRF. The resulting loading of a step signal at the input of the probe is given in Figure 4-9. The connection inductance Lcon has only a minor effect on the signal loading and is therefore not considered in the following.
R&S®RT-ZS10E/10/20/30 Measurement Principles Signal Loading of the Input Signal Vs Vin 350 Input voltage in mV 300 250 Vinit 200 150 where 100 Cin ( RRF RS ) 3τ Vinit VS 50 RRF RS R RF 0 0 100 200 300 400 500 600 700 800 900 1000 Time in ps Figure 4-9: Signal loading caused by the R&S RT‑ZS10/20/30 probe at an effective source impedance of 25 Ω 4.2.1.
R&S®RT-ZS10E/10/20/30 Measurement Principles Probing Philosophy 4.2.1.3 RF Resistance The RF resistance RRF determines the minimum input impedance and thus the maximum loading at high frequencies above 1.0 GHz. Thus, the measurement result depends on the source impedance of the DUT. The RF resistance prevents the input voltage from rising immediately to its final value for fast transients. The initial voltage Vinit depends on RRF, see Figure 4-9. 4.
R&S®RT-ZS10E/10/20/30 Measurement Principles Probing Philosophy Figure 4-10: Unloaded and loaded input signal and step response (for RT-ZS30) User Manual 1410.3531.
R&S®RT-ZS10E/10/20/30 Maintenance and Service Returning for Servicing 5 Maintenance and Service 5.1 Service Strategy Like all Rohde & Schwarz products, Rohde & Schwarz probes and adapters are of high quality and require only minimum service and repair. However, if service is needed, contact your Rohde & Schwarz service center. Return a defective product to the Rohde & Schwarz service center for diagnosis and exchange. You can return the R&S RT‑ZS10/20/30 active voltage probe for calibration.
R&S®RT-ZS10E/10/20/30 Maintenance and Service Spare Parts 5.3 Cleaning Product damage caused by cleaning agents Cleaning agents contain substances that can damage the product, for example, solvent can damage the labeling or plastic parts. Never use cleaning agents such as solvents (thinners, acetone, etc.), acids, bases or other substances. To clean the exterior of the product, use a soft cloth moistened with either distilled water or isopropyl alcohol.
R&S®RT-ZS10E/10/20/30 Maintenance and Service Spare Parts Table 5-1: Accessories spare parts Pos. Item Description Material number 1 Signal pin 1416.0005.00 2 Ground pin, pogo 1416.0034.00 3 Ground pin, solderable, offset 1416.0040.00 4 Ground adapter, square pin 1416.0063.00 5 Lead, 6 cm / 2.4 in 1416.0128.00 6 Lead, 15 cm / 5.9 in 1416.0134.00 7 Mini clip 1416.0105.00 8 Micro clip 1416.0111.00 9 Marker band kit 1416.0205.00 User Manual 1410.3531.
R&S®RT-ZS10E/10/20/30 Maintenance and Service Spare Parts Pos. Item Description Material number 10 Pogo pin Pogo pin connector, 6 pins 3584.6396.00 11 R&S RT-ZK1 R&S RT-ZK1 service kit 1410.5157.02 Table 5-2: Parts for ESD prevention Pos. Item Material number 1 ESD wrist strap 0008.9959.00 2 ESD grounding cable 1043.4962.00 User Manual 1410.3531.
R&S®RT-ZS10E/10/20/30 6 Functional Check Functional Check The functional check confirms the basic operation of the R&S RT‑ZS10/20/30 active voltage probe. The functional check is not suitable for verifying compliance with the probe specifications. 1. Connect the R&S RT‑ZS10/20/30 probe to a Rohde & Schwarz oscilloscope as described in Chapter 2.1, "Connecting the Probe to the Oscilloscope", on page 16. 2. Connect the signal pin to the square wave output of the oscilloscope. 3.
R&S®RT-ZS10E/10/20/30 Index Index A Mini clip ................................................... 24 Accessories ............................................. 10 Spare Parts ......................................... 38 Usage ................................................. 21 AutoZero ..................................................17 N O B Offset compensation ............................... 18 Bandwidth ............................................6, 27 P C Pins Inserting and removing .......
