R&S RT-ZM User Manual
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R&S RT-ZM User Manual

R&S RT-ZM User Manual

Modular probe system
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R&S
RT‑ZM
Modular Probe System
User Manual
(>COL2)
1419312802
Version 05

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Summary of Contents for R&S RT-ZM

  • Page 1 ® R&S RT‑ZM Modular Probe System User Manual (>COL2) 1419312802 Version 05...
  • Page 2 1419.3128.02 | Version 05 | R&S RT‑ZM Throughout this manual, products from Rohde & Schwarz are indicated without the ® symbol and without ® product type numbers, e.g. R&S RT-ZM15/30/60/90/130/160 is indicated as R&S RT-ZM, and the ® R&S ProbeMeter is indicated as R&S ProbeMeter.

  • Page 3: Table Of Contents

    ® Contents R&S RT‑ZM Contents 1 Safety and regulatory information........5 1.1 Safety instructions................5 1.2 Labels on the product................7 1.3 Warning messages in the documentation.......... 8 2 Product description...............9 2.1 Key characteristics and key features..........9 2.2 Unpacking and checking..............11 2.3 Description of the probe..............
  • Page 4 ® Contents R&S RT‑ZM 5.3 Returning for servicing..............47 5.4 Calibration interval................47 5.5 Storage and transport................ 48 5.6 Disposal....................48 5.7 Spare parts..................48 User Manual 1419.3128.02 ─ 05...

  • Page 5: Safety And Regulatory Information

    Use the product only for its designated purpose. Observe the operating conditions and performance limits stated in the data sheet. The R&S RT-ZM modular probe is designed for measurements on circuits that are only indirectly connected to the mains or not connected at all. It is not rated for any measurement category.
  • Page 6 ® Safety and regulatory information R&S RT‑ZM Safety instructions sheet, manuals and the printed "Safety Instructions for Oscilloscopes and Acces- sories" document. If you are unsure about the appropriate use, contact Rohde & Schwarz customer service. Using the product requires specialists or specially trained personnel. These users also need sound knowledge of at least one of the languages in which the user interfaces and the product documentation are available.

  • Page 7: Labels On The Product

    ® Safety and regulatory information R&S RT‑ZM Labels on the product Consider that the rated voltage depends on the frequency. The voltage limita- tion curves or values are provided in the data sheet. ● Never cause any short circuits when measuring sources with high output cur- rents.

  • Page 8: Warning Messages In The Documentation

    ® Safety and regulatory information R&S RT‑ZM Warning messages in the documentation Warning messages in the documentation A warning message points out a risk or danger that you need to be aware of. The signal word indicates the severity of the safety hazard and how likely it will occur if you do not follow the safety precautions.

  • Page 9: Product Description

    RT‑ZM Key characteristics and key features Product description The R&S RT-ZM is a modular probe consisting of a probe amplifier and various probe tip modules for different applications. The R&S RT-ZM probe family features the MultiMode function which allows you to switch between single-ended, differential and common mode measurements without reconnecting or resoldering the probe.
  • Page 10 ® Product description R&S RT‑ZM Key characteristics and key features Operating voltage window ±7.0 V with ±16 V offset capability, DC to 100 kHz (each pin to GND) ±5.0 V with ±16 V offset capability, > 100 kHz Maximum non-destructive input voltage ±30 V DC Input resistance Differential: 400 kΩ...

  • Page 11: Unpacking And Checking

    Probe frequency correction The R&S RT-ZM probe amplifier includes an integrated data memory with individ- ually measured S-parameters. These correction parameters are read out and pro- cessed by the Rohde & Schwarz oscilloscope. This leads to a more accurate probe frequency response and an enhanced measurement accuracy.

  • Page 12: Description Of The Probe

    Description of the probe The probe consists of the active probe amplifier, the probe box for connection to the oscilloscope, the probe cable and various probe tip modules. Figure 2-1: R&S RT-ZM probe consisting of probe amplifier and probe box 2.3.1 Probe amplifier The probe amplifier is designed for easy handling and high-performance mea- surements.
  • Page 13 ® Product description R&S RT‑ZM Description of the probe (1) Positive coaxial input (2) Negative coaxial input (3) Ground socket (4) Termination voltage socket (5) Micro button Signal and termination voltage sockets are compatible with 0.64 mm (25 mil) square pins and 0.6 mm to 0.8 mm (24 mil to 35mil) round pins.

  • Page 14: Accessories And Items

    Product description R&S RT‑ZM Accessories and items Figure 2-2 shows all probe tip modules that are available for the R&S RT-ZM probe. The usage of probe tip modules is described in Chapter 3.4, "Connecting the probe to the DUT", on page 21.
  • Page 15 ® Product description R&S RT‑ZM Accessories and items Table 2-1: Accessories supplied Item Quantity Description Lead, 15 cm / 5.9 in Solder wire 0.1mm, Ag plated, 10 m Solder wire 0.2mm, Ag plated, 10 m Solder wire, lead free, 5 m Adhesive pads User Manual 1419.3128.02 ─...
  • Page 16 ® Product description R&S RT‑ZM Accessories and items Item Quantity Description Solder in resistor (270 Ω) for R&S RT‑ZMA15 Solder lead for R&S RT‑ZMA12/15 For a list of spare parts, see Chapter 5.7, "Spare parts", on page 48. 2.4.2 Optional accessories If the delivered accessories do not meet individual customer requirements, Rohde &...
  • Page 17 Accessories Items Quantity R&S RT‑ZA9 probe box to N / USB adapter The adapter connects the R&S RT-ZM modular 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.
  • Page 18 The service kit includes all adapters and accessories to connect the probe to the required measuring instruments. R&S RT-ZM Service Manual The service manual contains a detailed description of the performance test to verify the specifications, and other important service procedures.

  • Page 19: Connecting The Probe

    Connecting the probe to the oscilloscope Connecting the probe Handling the probe The R&S RT-ZM can withstand a moderate amount of physical and electrical stress. To avoid damage, treat the probe with care: ● Handle the probe by the probe amplifier or probe box.
  • Page 20 ® Connecting the probe R&S RT‑ZM Connecting the probe to the oscilloscope Connect the probe only to an instrument with Rohde & Schwarz probe inter- face. Never connect it to a usual BNC jack, because this can damage the probe interface. Connect the probe box (1) to the Rohde &...

  • Page 21: Identification Of The Probe

    This chapter describes how to connect the probe to the DUT using different R&S RT‑ZMA tip modules offered for the R&S RT-ZM probe family. The various tip modules are described and their use is explained. Note that you always need a tip module.
  • Page 22 ® Connecting the probe R&S RT‑ZM Connecting the probe to the DUT To connect the probe tips to the probe amplifier 1. Connect the probe to an oscilloscope channel to ensure that the amplifier is grounded. 2. Push the tip module straight in the probe amplifier to connect them. To disconnect the probe tips from the probe amplifier ►...
  • Page 23 ® Connecting the probe R&S RT‑ZM Connecting the probe to the DUT Bandwidth: up to 16 GHz MultiMode compatible Length: 15 cm Variable span range of the leads: 0 mm to 5 mm (0 mil to 200 mil). Temperature range: -30 °C to +80 °C Measurements in MultiMode In this configuration, you can measure single-ended, differential and common mode signals without resoldering the tip cable.
  • Page 24 ® Connecting the probe R&S RT‑ZM Connecting the probe to the DUT 3.4.4 R&S RT‑ZMA12 tip cable square pin The R&S RT‑ZMA12 tip cable square pin is used to plug onto pins and make a connection to the DUT that is easy to plug and remove. It is well suited for creat- ing contact with soldered in test leads and can be used to plug onto pin strips with a pitch of 1.27 mm (50 mil).
  • Page 25 ® Connecting the probe R&S RT‑ZM Connecting the probe to the DUT Measurements in DM Mode In this configuration, you can measure only differential signals. 1. Solder both signal leads (P,N) to your DUT. 2. Leave ground vias open. 3.4.5 R&S RT‑ZMA14 tip cable flex connect The R&S RT‑ZMA14 tip cable flex connect makes it easy to clamp and remove connection onto solder-in flex tips soldered directly to the DUT.
  • Page 26 ® Connecting the probe R&S RT‑ZM Connecting the probe to the DUT 4. Use the clamp connector to connect and reconnect the RT-ZMA14 tip cable. Measurements in DM Mode In this configuration, you can measure only differential signals. 1. Permanently solder the flex tips to the DUT. 2.
  • Page 27 ® Connecting the probe R&S RT‑ZM Connecting the probe to the DUT Measurements with MultiMode In this configuration, you can measure single-ended, differential and common mode signals. Use only the 270 Ω resistors from the R&S RT‑ZMA accessories set for optimal flatness and bandwidth.
  • Page 28 ® Connecting the probe R&S RT‑ZM Connecting the probe to the DUT Bandwidth: up to 16 GHz Distance range: 0.5 mm to 8 mm (20 mil to 315 mil) Axial travel: 0.5 mm (20 mil) Not MultiMode compatible, the module has no ground connector.
  • Page 29 ® Connecting the probe R&S RT‑ZM Connecting the probe to the DUT Disconnecting from the DUT 1. Remove the browser module from the DUT. 2. Disconnect the probe amplifier from the oscilloscope. 3.4.8 R&S RT‑ZMA40 SMA module The R&S RT‑ZMA40 SMA module allows you to connect two 2.92 mm, 3.5 mm, or SMA cables to make a MultiMode measurement on a single oscilloscope chan- nel.
  • Page 30 ® Connecting the probe R&S RT‑ZM Connecting the probe to the DUT The R&S RT‑ZMA40 SMA module applies a termination voltage (±4 V) to the DUT to enable measurements against a common mode DC voltage instead of ground. This measurement is required for many digital signal standards. The termination voltage can be controlled by the oscilloscope.
  • Page 31 ® Connecting the probe R&S RT‑ZM Connecting the probe to the DUT Connecting the tip cable into the probe amplifier 1. NOTICE! Keep the R&S RT‑ZM probe amplifier outside the temperature chamber. It has a specified operating temperature range from 0°C to 40°C. Connect the R&S RT‑ZMA11 tip cable solder-in ET to the 1-m extension cable pair.
  • Page 32 ® Connecting the probe R&S RT‑ZM Connecting the probe to the DUT 2. Solder both ground wires (GND) at the outside of the tip board and to the DUT. Measurements in DM mode In this configuration, you can measure only differential measurements. 1.

  • Page 33: Features And Characteristics Of Modular Probes

    ® Features and characteristics of modular probes R&S RT‑ZM MultiMode Features and characteristics of modular probes MultiMode The R&S RT‑ZM probe family features the MultiMode function which allows you to switch between single-ended, differential and common mode measurements without reconnecting or resoldering the probe. Four different input voltages can be measured with the MultiMode feature: ●...
  • Page 34 RT‑ZM MultiMode Figure 4-1: Input voltage at probe tip The R&S RT-ZM probes have three input terminals: the positive signal input (+), the negative signal input (-), and ground. Figure 4-2: Displayed voltage on oscilloscope screen The setting of the probe mode is part of the probe settings of the channel to which the probe is connected.

  • Page 35: Dynamic Range And Operating Voltage Window

    Dynamic range and operating voltage window Dynamic range and operating voltage window Two separate specifications are necessary to characterize the permissible input voltage range of a R&S RT-ZM MultiMode probe. Measurement mode Single-Ended P, Single-Ended N, or Common Mode Dynamic Range ±2.50 V at 10:1 attenuation...

  • Page 36: Offset Compensation

    ® Features and characteristics of modular probes R&S RT‑ZM Offset compensation Figure 4-3: Operating voltage window for differential measurement mode DM at 10:1 attenuation for all offset settings at 0 V Offset compensation The R&S RT‑ZM probe features the most comprehensive offset compensation function.
  • Page 37 ® Features and characteristics of modular probes R&S RT‑ZM Offset compensation MultiMode Offset compensation Offset com- Application setting pensation range P-Mode DC voltage at positive ±24 V Measurement of single-ended AC sig- input terminal nals with high superimposed DC com- ponent at the positive input terminal.
  • Page 38 ® Features and characteristics of modular probes R&S RT‑ZM Offset compensation Figure 4-4: Differential offset compensation for a single-ended measurement (negative ‑ ZM15/30/60/90/130/160 input connected to ground) using an R&S RT 4.3.2 Common mode offset The common mode offset function can compensate a DC voltage applied to both input terminals at the probe tip (referenced to ground).
  • Page 39 ® Features and characteristics of modular probes R&S RT‑ZM Offset compensation Figure 4-5: Common mode (CM) offset compensation for a differential measurement 4.3.3 Positive input single-ended offset The P offset function can compensate a DC voltage applied to the positive input terminal (V ) at the probe tip (referenced to ground).
  • Page 40 ® Features and characteristics of modular probes R&S RT‑ZM Offset compensation Figure 4-6: P offset compensation for a single-ended measurement at the positive input terminal 4.3.4 Negative input single-ended offset The N offset function can compensate a DC voltage applied to the negative input terminal (V ) at the probe tip (referenced to ground).

  • Page 41: Micro Button

    ® Features and characteristics of modular probes R&S RT‑ZM R&S ProbeMeter Micro button The micro button provides easy and quick access to important functions of the Rohde & Schwarz oscilloscope. After a function has been assigned, pressing the micro button remotely controls this specific function on the base unit. For exam- ple, "Run continuous"...

  • Page 42: Input Impedance

    ® Features and characteristics of modular probes R&S RT‑ZM Input impedance ● Independent of probe settings for measurement mode and gain. ● Unique way to detect unexpected or inadmissible common mode voltages, e.g. bias points - measurement of common mode DC voltages without recon- necting the probe.
  • Page 43 ® Features and characteristics of modular probes R&S RT‑ZM Input impedance ‑ ZMA10 Figure 4-8: Input impedance R&S RT ‑ ZMA12 Figure 4-9: Input impedance R&S RT User Manual 1419.3128.02 ─ 05...
  • Page 44 ® Features and characteristics of modular probes R&S RT‑ZM Input impedance ‑ ZMA14 Figure 4-10: Input impedance R&S RT ‑ ZMA15 Figure 4-11: Input impedance R&S RT User Manual 1419.3128.02 ─ 05...
  • Page 45 ® Features and characteristics of modular probes R&S RT‑ZM Input impedance ‑ ZMA30 Figure 4-12: Input impedance R&S RT ‑ ZMA50 with R&S RT ‑ ZMA11 tip Figure 4-13: Input impedance R&S RT User Manual 1419.3128.02 ─ 05...

  • Page 46: Maintenance And Service

    ® Maintenance and service R&S RT‑ZM Contacting customer support Maintenance and service Like all Rohde & Schwarz products, Rohde & Schwarz probes and adapters are of high quality and require only minimum service and repair. However, if service or calibration is needed, contact your Rohde & Schwarz service center. Return a defective product to the Rohde &...
  • Page 47 Figure 5-1: QR code to the Rohde & Schwarz support page Returning for servicing Use the original packaging to return your R&S RT-ZM to your Rohde & Schwarz- service center. A list of all service centers is available on: www.services.rohde-schwarz.com If you cannot use the original packaging, consider the following: 1.
  • Page 48 ® Maintenance and service R&S RT‑ZM Spare parts Storage and transport Protect the product against dust. Ensure that the environmental conditions, e.g. temperature range and climatic load, meet the values specified in the data sheet. Store the product in a shock-resistant case, e.g. in the shipping case. Unless otherwise specified in the data sheet, the maximum transport altitude with- out pressure compensation is 4500 m above sea level.
  • Page 49 ® Maintenance and service R&S RT‑ZM Spare parts Table 5-1: Accessories for R&S RT-ZM Pos Item Description Material number Adhesive pads 1800.4268.00 Cable marker 1800.4245.00 Lead wire black (ground) 1800.4222.00 Solder wire 0.2mm Ag 1800.4074.00 plated Solder wire 0.1mm Ag 1800.4051.00...
  • Page 50 ® Maintenance and service R&S RT‑ZM Spare parts Pos Item Description Material number Solder lead 3623.2791.00 SMP bullet 1419.3386.00 SMP bullet removal tool 1800.4451.00 Pogo pin Pogo pin connector, 6 pins 3584.6396.00 R&S RT-ZK3 R&S RT-ZK3 service kit 1419.3934.02 ‑ ZMA14 Table 5-2: Accessories for R&S RT Pos Item Description...
  • Page 51 ® Maintenance and service R&S RT‑ZM Spare parts ‑ ZMA40 Table 5-4: Accessories for R&S RT Pos Item Description Material number Semi rigid cable 1419.4276.00 Lead wire red (termination 1800.4239.00 voltage) Table 5-5: Parts for ESD prevention Pos. Item Material number ESD wrist strap 0008.9959.00 ESD grounding cable...

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