R&S RT-ZD10 Manual de usuario

R&S®RT‑ZD10/20/30

Active Differential Probe

R&S®RT‑ZA15

External Attenuator

User Manual

Version 05

1410455002

(>:]À2)

This user manual describes the following R&S®RT-ZD models and external

attenuators:

●R&S®RT-ZD10 (1410.4715.02)

●R&S®RT-ZD20 (1410.4409.02)

●R&S®RT-ZD30 (1410.4609.02)

●R&S®RT-ZA15 (1410.4744.02)

Mühldorfstr. 15, 81671 München, Germany

Phone: +49 89 41 29 - 0

Fax: +49 89 41 29 12 164

Email: [email protected]

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.

Trade names are trademarks of the owners.

1410.4550.02 | Version 05 | R&S®RT‑ZD10/20/30

Throughout this manual, products from Rohde & Schwarz are indicated without the ® symbol and without

product type numbers, e.g. R&S®RT-RT-ZD10/20/30 is indicated as R&S RT-ZD10/20/30.

Contents

R&S®RT‑ZD10/20/30

3User Manual 1410.4550.02 ─ 05

Contents

1Product Description.............................................................. 5

1.1 Key Features and Key Characteristics............................................... 5

1.2 Unpacking..............................................................................................7

1.3 Description of the Probe...................................................................... 8

1.4 Accessories and Items......................................................................... 9

2 Putting into Operation.........................................................15

2.1 Connecting the Probe to the Oscilloscope...................................... 16

2.2 Identification of the Probe..................................................................17

2.3 Using the Probe.................................................................................. 17

2.4 Offset Compensation..........................................................................18

3 R&S RT‑ZA15 External Attenuator..................................... 23

3.1 Key Characteristics............................................................................ 23

3.2 Description.......................................................................................... 24

3.3 Inserting the Probe............................................................................. 24

3.4 Adjusting............................................................................................. 25

4 Connecting the Probe to the DUT...................................... 30

5 Characteristics of Differential Probes............................... 36

5.1 Common Mode Rejection Ratio (CMRR)...........................................37

5.2 Dynamic Range and Operating Voltage Window............................. 38

5.3 Ground Connection............................................................................ 39

6 Measurement Principles..................................................... 40

6.1 Signal Integrity of the Transferred Signal.........................................42

6.2 Signal Loading of the Input Signal....................................................46

6.3 Probing Philosophy............................................................................ 49

Contents

R&S®RT‑ZD10/20/30

4User Manual 1410.4550.02 ─ 05

7 Maintenance and Service....................................................51

7.1 Cleaning...............................................................................................51

7.2 Contacting Customer Support...........................................................51

7.3 Returning for Servicing...................................................................... 52

7.4 Calibration Interval............................................................................. 53

7.5 Discarding the Product...................................................................... 53

7.6 Spare Parts.......................................................................................... 53

8 Functional Check.................................................................56

Index..................................................................................... 57

Product Description

R&S®RT‑ZD10/20/30

5User Manual 1410.4550.02 ─ 05

1 Product Description

1.1 Key Features and Key Characteristics

The R&S RT‑ZD10/20/30 is a differential probe with high input impedance. It is

used for differential voltage measurements from DC to 1.0 GHz, 1.5 GHz, and

3 GHz, respectively.

Differential probes can be used for single-ended and differential applications.

They are equipped with two high-impedance inputs and can measure the voltage

between any two test points. Unlike using single-ended probes, there is no need

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

variety of devices under test (DUT). Provided with special features such as the

R&S ProbeMeter and the micro button, the R&S RT‑ZD10/20/30 is designed to

meet tomorrow's challenges in probing.

The external attenuator R&S RT‑ZA15 can be used to extend the input voltage

range of the R&S RT‑ZD10/20/30. It is supplied with the R&S RT‑ZD10 and is

available as optional accessory for the R&S RT‑ZD20/30.

The probe is equipped with theRohde & Schwarz probe interface. It can be con-

nected to any Rohde & Schwarz instrument that is compatible with this interface.

When connected to the front panel, the probe is controlled by the oscilloscope's

software. Supported oscilloscopes are listed in the data sheet.

Using a specially developed adapter (see Chapter 1.4.2, "Optional Accessories",

on page 13), the probe can also be connected to any other base unit.

Key Features and Key Characteristics

Product Description

R&S®RT‑ZD10/20/30

6User Manual 1410.4550.02 ─ 05

1.1.1 Key Characteristics

The key characteristics of the probe are the following:

Bandwidth DC to 1.0 GHz (R&S RT-ZD10)

DC to 1.5 GHz (R&S RT-ZD20)

DC to 3.0 GHz (R&S RT-ZD30)

Dynamic range

(differential input)

±5 V with ±5 V offset capability

10 V AC (Vpp)

Operating voltage window

(each pin to GND)

±8 V with ±22 V common mode offset capability

Available for R&S RT‑ZD10/20/30 probes with serial

number ≥ 200000

Maximum non-destructive input voltage ±30 V

Between each signal pin and ground

Diff. input resistance 1 MΩ

Diff. input capacitance 0.6 pF

R&S ProbeMeter, measurement error <0.1 %

Extremely low zero and gain errors throughout the entire temperature range, no significant tem-

perature drift

Micro button

Rohde & Schwarz probe interface

1.1.2 Key Features

Micro button

The micro button at the probe head can remotely control different functions on the

base unit. The assigned function is configured via the base unit.

For details, see Chapter 2.3.2, "Micro Button", on page 18.

R&S ProbeMeter

The R&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 runs in parallel to the time

domain measurement. If activated on the base unit, the measured value is dis-

played on the screen of the Rohde & Schwarz oscilloscope.

Key Features and Key Characteristics

Product Description

R&S®RT‑ZD10/20/30

7User Manual 1410.4550.02 ─ 05

The R&S ProbeMeter simultaneously measures both differential and common

mode DC voltages.

For details, see Chapter 2.4.3, "R&S ProbeMeter", on page 21.

Data memory

The probe has an integrated data memory, containing the individual probe correc-

tion parameters (e.g. gain, delay, offset). These parameters are read out and pro-

cessed by the Rohde & Schwarz oscilloscope. As a result, the probe offers a high

degree of accuracy, and additional calibration procedures are not required.

1.2 Unpacking

The carrying case contains the following items:

●R&S RT‑ZD10/20/30 differential probe

●Carrying case

●Accessory boxes

●User manual

●R&S RT‑ZD10/20/30 data sheet

●Calibration certificate

●Documentation of calibration values (if

ordered)

●R&S RT-ZA15 external attenuator (only

with R&S RT-ZD10)

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.

If there is any damage or defect, or if the R&S RT‑ZD10/20/30 differential

probe does not operate properly, notify your Rohde & Schwarz service center.

Unpacking

Product Description

R&S®RT‑ZD10/20/30

8User Manual 1410.4550.02 ─ 05

●Inspect the accessories.

If the contents are incomplete or damaged, notify your Rohde & Schwarz ser-

vice center.

Accessories supplied with the device are listed in Chapter 1.4.1, "Accessories

Supplied", on page 10.

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) Negative signal socket

(3) Ground socket

(4) Micro button

The accessories supplied for the probe head

sockets are listed in Chapter 1.4.1, "Accesso-

ries 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.

Spacing of signal sockets: 5.08 mm (200 mil).

Description of the Probe

Product Description

R&S®RT‑ZD10/20/30

9User Manual 1410.4550.02 ─ 05

1.3.2 Probe Box

The probe box connects the probe and the oscilloscope via the Rohde & Schwarz

probe interface. The Rohde & Schwarz probe interface contains a male precision

7 mm (276 mil) BNC connector and six pogo pin connectors. This interface pro-

vides the required supply voltage and is also used to transmit analog signals and

digital data simultaneously. All the analog voltages required by the probe are gen-

erated in the probe box. This approach ensures that it will be possible to operate

future probes on any base unit that features a Rohde & Schwarz probe interface.

(1) Rohde & Schwarz probe interface with

7 mm (276 mil) coaxial connector and 6 pogo

pins

(2) Release knob

Connect the R&S RT‑ZD10/20/30 only to an instrument with Rohde & Schwarz

probe interface. Never connect it to a usual BNC jack. Although the 7 mm coaxial

connector looks like a standard BNC connector, it is constructed differently and

does not fit to the standard BNC jack. The interface of the R&S RT‑ZD10/20/30

can withstand a higher frequency limit.

1.4 Accessories and Items

The figure below shows all accessories that are available for the

R&S RT‑ZD10/20/30 differential probe.

Accessories and Items

Product Description

R&S®RT‑ZD10/20/30

10User Manual 1410.4550.02 ─ 05

RT-ZA15 External Attenuator

Figure 1-1: Available accessories

1.4.1 Accessories Supplied

The following table shows the accessories supplied with the R&S RT‑ZD10/20/30

differential probe.

Accessories and Items

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