Teledyne LeCroy RP4030 User manual

Operator’s Manual

RP4030
Power Rail Probe

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RP4030 Power Rail Probe Operator’s Manual

© 2018 Teledyne LeCroy, Inc. All rights reserved.

Unauthorized duplication of Teledyne LeCroy documentation materials other than for internal
sales and distribution purposes is strictly prohibited. However, clients are encouraged to
duplicate and distribute Teledyne LeCroy documentation for internal educational purposes.

Teledyne LeCroy is a registered trademark of Teledyne LeCroy, Inc. Windows is a registered
trademark of Microsoft Corporation. Other product or brand names are trademarks or requested
trademarks of their respective holders. Information in this publication supersedes all earlier
versions. Specifications are subject to change without notice.

929963-00, Rev A
September, 2018

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Contents

Safety Instructions ..................................................................................................... 1

Symbols ...................................................................................................................... 1

Precautions ................................................................................................................. 1

Introduction ................................................................................................................ 3

Key Features ............................................................................................................... 3

Compatibility ............................................................................................................... 5

Probe Kit ...................................................................................................................... 6

RP4000-BROWSER Accessory .................................................................................. 7

Other RP4030 Accessories ........................................................................................ 8

Specifications ........................................................................................................... 10

Nominal Characteristics .......................................................................................... 10

Warranted Characteristics ....................................................................................... 10

Typical Characteristics ............................................................................................ 10

Operator’s Manual

Physical Characteristics .......................................................................................... 11

Probe Impedence vs. Frequency ............................................................................. 11

Frequency Response ............................................................................................... 12

Operation ................................................................................................................... 15

Handling the Probe ................................................................................................... 15

Operating from the Oscilloscope ............................................................................ 15

Connecting to the Circuit ......................................................................................... 17

Performance Verification ......................................................................................... 24

Required Test Equipment ........................................................................................ 24

Functional Check ...................................................................................................... 25

Performance Verification Test ................................................................................ 25

RP4030 Test Record ................................................................................................ 29

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RP4030 Power Rail Probe

Care and Maintenance ............................................................................................. 30

Cleaning .................................................................................................................... 30

Calibration Interval ................................................................................................... 30

Service Strategy ....................................................................................................... 30

Troubleshooting ....................................................................................................... 30

Returning a Product for Service .............................................................................. 31

Warranty .................................................................................................................... 33

Certifications ............................................................................................................ 34

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Operator’s Manual

CAUTION, possibility of electric shock.

CAUTION of damage to probe or instrument, or WARNING of hazard to health. Refer to the

Equipment protected by double insulation or reinforced insulation.

ESD CAUTION. Risk of Electrostatic Discharge (ESD) that can damage the probe or instrument

Safety Instructions

Follow these instructions to keep the probe operating in a correct and safe condition. Observe
generally accepted safety procedures in addition to the precautions specified here.

The overall safety of any system incorporating this accessory is the responsibility of the
assembler of the system.

Symbols

These symbols appear on the probe body or in documentation to alert you to important safety
considerations.

manual to protect against personal injury or damage. Do not proceed until conditions are fully
understood and met.

if anti-static measures are not taken.

Precautions

Comply with the following safety precautions to avoid personal injury or damage to
your equipment:

Use only as specified. The probe is intended to be used only with compatible Teledyne LeCroy
instruments. Using the probe and/or the equipment it is connected to in a manner other than
specified may impair the protection mechanisms.

Do not use the probe for measurements on Mains circuits.

Do not overload; observe all ratings. To avoid electric shock or fire, do not connect the current

probe to any wire that carries voltages or currents that exceed the ratings of the probe.

Connect and disconnect properly. Connect the probe to the measurement instrument before
connecting to the circuit being measured. Avoid damaging the cable through excessive bending.

Use only indoors and within the operational environment listed. Do not use in wet or explosive
atmospheres.

Do not remove the probe's casing. Touching exposed connections may result in electric shock.

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RP4030 Power Rail Probe

Keep product surfaces clean and dry.

Handle with care. Probe tips are sharp and may cause injury if not handled properly.

Comply with the maximum input voltage vs. frequency derating when measuring voltage that

includes a high frequency component.

Do not operate with suspected failures. Before each use, inspect the probe and accessories for
damage such as tears or other defects in the probe body, cable jacket, accessories, etc. If any
part is damaged, cease operation immediately and sequester the probe from inadvertent use.

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Operator’s Manual

Introduction

The Teledyne LeCroy RP4030 Power Rail Probe meets the specific requirements of those who
need to acquire a low-voltage DC signal as part of testing:

• Digital power management components such as power management IC (PMIC);
voltage regulator module (VMR); point-of-load (POL) switching regulator; or
low-dropout regulator

• Complete embedded systems containing digital power management components

The RP4030 will acquire a low-impedance, low-voltage DC power/voltage rail signal without
loading the device under test (DUT). It provides high offset―allowing DC power/voltage rail
signal to be display in the vertical center of the oscilloscope―and high sensitivity (gain) with
low noise.

Key Features

• High offset capability (+/-30 V) to permit the DC signal to be displayed in the vertical
center of the oscilloscope grid regardless of the gain/sensitivity setting

• Low attenuation (nominally 1.2:1) for operation with very low additive noise levels
of 50 μVrms probe noise, referenced to the input of the probe. When used with an HDO
12-bit oscilloscope at 1 GHz bandwidth, this equates to 140 μVrms system noise at
1 mV/div or 210 μVrms system noise at 5 mV/div, an approximately 5% increase in
oscilloscope only noise.

• 50 Ω DC coupled to the oscilloscope with high DC input impedance (50 kΩ) to minimize
loading on the DUT

• High dynamic range (+/-800 mV)

• 4 GHz of bandwidth―ideal for use with a 4 GHz 10-bit HDO9404

• ProBus interface with wide variety of leads for different probing needs

Low- and High-Frequency Measurements at High Bandwidths

The RP4030 is a superior solution to commonly used alternative methods.

One commonly used method is to terminate a 50 Ω transmission line into 1 MΩ coupling at the
oscilloscope. While this will provide acceptable bandwidth performance for some, the loading
impedance of a 50 Ω cable terminated to a 1 MΩ input will depend upon the length of the 50 Ω
cable and will have null values when frequency is proportional to the length of the cable. A
damping resistor could be used to mitigate this impact, but the 1 MΩ input to the oscilloscope is
typically limited to 500 MHz, and the oscilloscope must inherently have high offset-adjust

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RP4030 Power Rail Probe

capability equivalent to the DC rail voltage at the most sensitive gain settings. This is rarely the
case, although Teledyne LeCroy HDO oscilloscopes are a notable exception.

To avoid the need for high offset in the oscilloscope input channel, engineers may use a DC
block between their cable connection and the oscilloscope input, or AC coupling of the
oscilloscope input. A DC block has a non-ideal low-frequency response (typically blocking DC to
100 kHz or DC to 10 MHz), which eliminates low-frequency signal content that would normally
be seen during typical oscilloscope acquisition times (100 ns to 10 ms). This approach might
show the signal with a misunderstood non-zero DC offset, or might introduce a “droop” or “sag”
in the waveform at a step voltage change due to the loss of low-frequency content. The
frequency response of an oscilloscope when AC input coupled usually reaches closer to DC
(~10 Hz low-pass cutoff), but is still not ideal.

The RP4030 eliminates the above tradeoffs and permits more accurate and more convenient DC
power/voltage rail probing at very high bandwidths.

In the simplified circuit diagram below, the RP4030 portion is highlighted in gray. The input is
through a high bandwidth SMA connector, terminated to ground with a 50 kΩ resistor in parallel
with a 0.1 μF capacitor. This termination provides high input impedance near DC and low input
impedance at high frequencies―highly desirable for low impedance DC power rail probing. A
two-stage offset DAC provides 16-bit offset resolution over a 30 V range. This permits the offset
value to be set with high precision (~1mV) and accuracy (0.1% ± 3 mV). The output is through a
BMA connection to the Teledyne LeCroy ProBus interface into a 50 Ω oscilloscope termination.
An Auto Zero grounding switch permits Auto Zero of the DC value at any time without
disconnecting the probe from the device under test (DUT).

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Operator’s Manual

Variety of Leads

An assortment of solder-in leads and MCX or U.FL (compatible with IPX or MMCX) PCB mount
receptacles are supplied for connection to the power rails. Multiple solder-in leads or PCB
mount receptacles can be left in place, while the probe MCX cable is moved from one
lead/receptacle to another as test needs change. The compact (3mm x 3mm) U.FL PCB mount
receptacles permit installation of many PCB mount receptacles on a compact, power dense
mobile/handheld PCB. A separate browser tip accessory (the RP4000-BROWSER) is available at
additional cost.

If desired, the cable and lead connection components may be used separately from the RP4030
probe. This is useful for power sequencing tests where the dynamic range of the DC
power/voltage rail exceeds the +/-800 mV rating of the probe. See Connecting to the Circuit.

ProBus Interface

The RP4030 uses the ProBus interface to connect to Teledyne LeCroy oscilloscopes. With the
ProBus interface, the probe becomes an integral part of the measuring instrument. Power is
provided to the probe through the interface, so there is no need for a separate power supply or
batteries, and attenuation is automatically identified. All compatible Teledyne LeCroy
oscilloscopes will support the connection of an RP4030 on every input channel, if required.

Compatibility

The Teledyne LeCroy RP4030 is compatible with a wide range of Teledyne LeCroy oscilloscopes:

• For 64-bit MAUI oscilloscopes, proper functioning of the RP4030 requires XStreamDSO
firmware version 8.2.1.1 or higher.

• For 32-bit MAUI oscilloscopes, proper functioning of the RP4030 requires XStreamDSO
firmware version 8.1.2.0 or higher.

Note: RP4030 is not compatible with WaveSurfer Xs oscilloscopes, which only run up to 32-bit
XstreamDSO 7.2.0.5. Contact Service for available oscilloscope upgrades.

See our website for a full list of compatible models.

For power integrity testing, digital power management, and system power management testing
on one or more DC power/voltage rails, Teledyne LeCroy HDO oscilloscopes are recommended
due to their high resolution, high bandwidth, high inherent offset capability, and the availability
of more than four channels.

For power integrity testing, it may be desirable to use a high-resolution oscilloscope with over
1 GHz bandwidth.

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RP4030 Power Rail Probe

Item

Description

Part Number

QTY

Extension Cable

SMA to MCX extension cable, 0.9 meters

42A0000007349

1

Solder-in Leads

MCX solder-in lead, 18cm long, 4 GHz

RP4000-MCX-LEAD-SI

3

MCX PCB Mounts

MCX 6mm x 6mm PCB mounts

See accessory list below

3

Coaxial Cables

MCX to U.FL ultra-miniature coaxial cable,
8cm long, 3 GHz

RP4000-MCX-CABLE-UFL

3

U.FL PCB Mounts

U.FL 3mm x 3mm PCB mounts

See accessory list below

5

Adapter

SMA to MCX adapter

42A0000007475

1

Case

Soft storage case with foam insert

N/A

1

Operator’s Manual

Printed operator’s manual

N/A

1

Probe Kit

The following items are shipped with the RP4030 probe. Additional quantities of some parts
may be purchased separately using the part number shown in the table.

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Operator’s Manual

Item

Description

Part Number

QTY

Probe Body

Probe body browser tip

PACC-PB001

1

Cable

SMA to SMA probe cable

PACC-CB001

1

Resistor

÷1 attenuating resistor (0 Ω, pre-installed)

927419-00

1

Resistor

÷10 attenuating resistor (450 Ω)

PACC-X1001

1

Resistor

÷20 attenuating resistor (950 Ω)

PACC-X2001

1

Housing

Plastic nose housing, black

PACC-NH001

1

Adapter

SMA to BNC adapter (Standard)

PACC-AD001

1

RP4000-BROWSER Accessory

The RP4000-BROWSER tip accessory is a ÷1 high-frequency transmission line browser tip. It
connects to one end of the supplied standard SMA-to-SMA extension cable, while the other end
of this cable terminates at the RP4030 probe, which then terminates at the oscilloscope with
50 Ω coupling with high input impedance. The spring-loaded, hinged ground pin contributes to
contact stability while making it easier to reach into dense circuitry.

Additional resistors are supplied so that the browser can be operated as a ÷10 or a ÷20
attenuation conventional high-frequency transmission line probe with direct connection to an
oscilloscope SMA input (or BNC input using the included SMA to BNC adapter). In this case, the
included 450 Ω (÷10) or 950 Ω (÷20) probe resistors must be installed in the tip.

CAUTION: When using the RP4030 probe and browser tip together, install the 0 Ω
resistor in the browser. Only install the 450 Ω or 950 Ω resistors when using the browser
tip as a conventional transmission line probe.

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RP4030 Power Rail Probe

Item

Description

Part Number

QTY

Solder-in Leads

MCX solder-in lead, 18cm long, 4 GHz

RP4000-MCX-LEAD-SI

3

MCX PCB Mounts

MCX 6mm x 6mm PCB mounts

RP4000-MCX-PCBMOUNT

10

Coaxial Cables

MCX to U.FL ultra-miniature coaxial,
8 cm long, 3 GHz

RP4000-MCX-CABLE-UFL

3

U.FL PCB Mounts

U.FL 3mm x 3mm PCB mounts

RP4000-UFL-PCBMOUNT

10

Other RP4030 Accessories

Additional quantities of the following accessories may be purchased with the RP4030 or
separately. If ordered with the RP4030, they are shipped inside the RP4030 soft carrying case.

MCX to Solder-in Leads

Three are supplied with the RP4030, and more may be purchased as accessory or replacement
items using part number RP4000-MCX-LEAD-SI.

MCX 6mm x 6mm PCB Mount Receptacles

Three are supplied with the RP4030, and more may be purchased as accessory or replacement
items using part number RP4000-MCX-PCBMOUNT. The supplied SMA to MCX cable connects
directly to these PCB mounts for optimum signal fidelity.

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Operator’s Manual

Ultra-miniature U.FL Coaxial Cables

Three are supplied with the RP4030, and more may be purchased as accessory or replacement
items using part number RP4000-MCX-CABLE-UFL. U.FL is a Hirose Electric ultra-miniature
connector that is ideal for use in very dense or compact circuits, and is functionally equivalent
to IPX and UMCC connectors. The corresponding U.FL PCB mount is one fourth the size of the
MCX (3mm x 3mm). This coaxial cable assembly utilizes an IPX connector that was qualified
with the U.FL PCB mount receptacles described below.

NOTE: While there are a variety of ultra-miniature PCB mounts and cables available from other
manufacturers that are compatible with U.FL, Teledyne LeCroy recommends using the supplied
coaxial cable and U.FL PCB mount receptacles as a system (cable connector and PCB mount
together), as this is how the frequency response has been validated.

U.FL 3mm x 3mm PCB Mounts

Five are supplied with the RP4030, and more may be purchased as accessory or replacement
items using part number RP4000-UFL-PCBMOUNT. The MCX to U.FL cables connect between
the SMA to MCX cable and the U.FL PCB mounts.

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RP4030 Power Rail Probe

Offset Range

±30 V

Attenuation

1.2x

DC Input Impedance

50 kΩ

Input Dynamic Range

±800 mV (single-ended)

Maximum Non-Destruct Input Voltage

50 V (DC + Peak AC)

Output Termination

50 Ω at oscilloscope input

Bandwidth

4 GHz using SMA to MCX cable with PCB mount

Attenuation Accuracy

1% into 50 Ω

Offset Accuracy

±0.1% ±3 mV

Bandwidth

4 GHz using MCX solder-in lead

Rise Time (10-90%)

110 ps

Specifications

For the most current specifications, see the product datasheet at teledynelecroy.com.
Specifications are subject to change without notice.

NOTE: The components supplied as part of the RP4030 probe are tested as a system. The
performance presented in this manual represents the probe when used with these components.
If components are lost or damaged, replace them with factory-certified components to maintain
the stated performance.

Nominal Characteristics

Nominal characteristics describe parameters and attributes that are guaranteed by design, but
do not have associated tolerances.

Warranted Characteristics

Warranted characteristics are parameters with guaranteed performance. Unless otherwise
noted, tests are provided in the Performance Verification Procedure for all warranted
specifications.

Typical Characteristics

Typical characteristics are parameters with no guaranteed performance. Tests for typical
characteristics are not provided in the Performance Verification Procedure.

3 GHz using U.FL ultra-miniature cable with PCB mount
350 MHz using browser

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Physical Characteristics

RP4030 Weight
(with all accessories and carrying case)

620 grams (1.37 lb.) net of packaging material

RP4030 Dimensions

Probe: 38.1 mm W x 15.9 mm H x 73 mm L (1 1/2” x 5/8” x 2 7/8”)

RP4000-BROWSER Dimensions

11.9 mm W x 9.5 mm H x 38 mm L (15/32” x 3/8” x 1 1/2”)

SMA to MCX Cable: 914 mm L (36”)
MCX to Solder-in Lead: 191 mm (7 1/2”) usable length
MCX to U.FL Plug Coaxial Cable: 102 mm (4”) usable length

SMA to SMA Cable: 1 m (39 3/8”) usable length

Probe Impedence vs. Frequency

Operator’s Manual

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RP4030 Power Rail Probe

Frequency Response

Following is the same data presented with a different magnitude and frequency scale.

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RP4030 Power Rail Probe

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Operation

NOTE: Operation of the probe as described requires the correct version of the XStreamDSO
firmware (see p.5). To confirm the version installed, choose Utilities > Utilities Setup from the
oscilloscope menu bar, then open the Status dialog.

Handling the Probe

The RP4030 probe is a precision test instrument. Exercise care when handling and storing the
probe. Always handle the probe by the probe body or compensation box. Avoid putting
excessive strain on or exposing the probe cable to sharp bends.

ESD Sensitive: The probe tips are sensitive to Electrostatic Discharge (ESD). Avoid
damaging the probe by always following anti-static procedures (wear wrist strap, etc.)
when using or handling the probe.

Operating from the Oscilloscope

The RP4030 probe has been designed for use with Teledyne LeCroy oscilloscopes equipped
with the ProBus interface. When the probe output connector is attached to the oscilloscope’s
input connector, the instrument will:

• Recognize the probe

• Set the oscilloscope input termination to DC50Ω

• Set the probe attenuation to 1.2x

• Activate the probe control functions on the oscilloscope user interface.

For accurate measurements, allow the probe to warm up for at least 20 minutes after being
connected to the oscilloscope.

Vertical Scale (V/div), Coupling, Bandwidth (BWL), and Attenuation are controlled from the
Channel setup dialog (Cn).

Channel setup dialog (Cn) with Probe dialog (Cn RP4030) behind it.

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RP4030 Power Rail Probe

The probe’s attributes are shown on the RP4030 Probe dialog, which appears behind the Cn
dialog when a probe is detected. The Probe dialog also contains controls for Auto Zero.

RP4030 Probe dialog.

Vertical Scale (Volts/div)

The oscilloscope automatically factors in the nominal 1.2x attenuation and adjusts the Vertical
Scale gain readout to reflect the attenuation value. No further scaling adjustment is needed.

NOTE: The maximum input dynamic range of the RP4030 is +/-800 mV. The maximum

oscilloscope gain setting with the RP4030 connected is +/-200 mV/div. Most DC rail voltage
exceeds 800 mV, so some applied offset is required to display the signal on the oscilloscope.

Offset

The RP4030 has built-in offset capability of ±30 V using a 16-bit offset DAC for high offset
accuracy and resolution. This allows you to remove a DC bias voltage from the input signal
while maintaining DC coupling. By using probe offset, the full dynamic range of the probe can be
centered around the vertical center of the oscilloscope grid so as to permit high sensitivity gain
settings to be used on a DC-biased signal.

Probe offset is controlled using the front panel Vertical OFFSET knob. The amount of offset
applied is displayed on the channel descriptor box.

NOTE: On Teledyne LeCroy oscilloscopes, the input offset displayed is the amount of offset
required to zero the applied voltage (e.g., a -1 V offset is required to vertically center a 1 V DC rail
on the grid).

Coupling

When the RP4030 is connected to the oscilloscope, input coupling is automatically set to
DC50Ω and cannot be changed. If using the browser tip as a transmission-line probe directly
connected to the oscilloscope, manually set Coupling to DC50Ω.

Bandwidth Limit

The bandwidth of the RP4030 ranges up to 4 GHz (depending on the lead attachment). If it is
desired to limit bandwidth to less than the rating, make a selection from the Cn dialog

Bandwidth control.

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Attenuation

When the RP4030 is connected to the oscilloscope, attenuation is automatically set to 1.2x and
cannot be changed.

However, if the ÷10 or ÷20 attenuation resistors are installed in the browser tip accessory and it
is connected directly to the oscilloscope (not through the RP4030) as a transmission line probe,
Attenuation must be manually set to the appropriate value on the Cn setup dialog.

Auto Zero

After 20 minutes of warm-up, or when the probe is exposed to a large shift in ambient
temperature, some DC offset drift may occur. The Probe dialog incorporates an Auto Zero
function to remove any DC offset drift.

To invoke Auto Zero, open the Cn RP4030 dialog and touch Auto Zero. The probe contains an
internal relay to disconnect the input from the probe amplifier while Auto Zero is performed, so
the probe does not need to be disconnected from the DUT prior to invoking Auto Zero.

NOTE: If the probe is open-circuited, a slight non-zero offset value may be observed on the probe
following Auto Zero. This is normal and represents the small amount of input offset current
from the probe amplifier into the 50 KΩ input impedance. When the probe is connected to a DUT,
this offset is not observed because the current will flow through the low DUT impedance.

Connecting to the Circuit

The RP4030 provides a high degree of flexibility in connecting to the circuit. For measuring AC
fluctuation of a DC rail, you may make any of the following connections:

• Direct MCX connection using a user-installed MCX PCB mount (4 GHz bandwidth,
36 mm2 PCB mount receptacle footprint).

• Direct U.FL connection using the MCX to U.FL ultra-miniature coaxial cable and a user­installed U.FL PCB mount (3 GHz of bandwidth, 7.7 mm2 PCB mount receptacle
footprint)

• Solder-in connection using the SMA to MCX extension cable and the MCX solder-in lead
(4 GHz of bandwidth)

• Browser connection (350 MHz of bandwidth)

To measure the full DC rail voltage (beyond the +/-800 mV input dynamic range rating of the
RP4030), use the RP4030 components to connect directly to the oscilloscope as follows:

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RP4030 Power Rail Probe

1. Connect the SMA to MCX extender cable to one of the solder-in leads, MCX PCB
mounts, or U.FL ultra-miniature coaxial cables described above.

2. Connect an SMA to BNC converter to the SMA end of the cable, and connect it to the
BNC input on the oscilloscope channel.

3. Set the oscilloscope channel Coupling to DC1MΩ.

This is an easy way to utilize the same connections to the power rail for power integrity or
transient rail voltage testing as for DC rail power startup/shutdown timing measurements.

Avoiding Damage

In all cases, use caution when connecting to the DUT. Low voltage DC power rails carry large
amounts of current and if they are shorted to ground, the low attenuation of the probe will
permit large currents to flow, potentially damaging the probe or the DUT. To prevent this:

• Inspect solder-in and PCB mount connections carefully before powering up the DUT to
ensure that there is no inadvertent connection between the power rail and ground.

• Use insulating tapes or other materials around the connection points (especially when
using the solder-in lead, which has an exposed cable ground).

• Tape the solder-in lead and coaxial cables to the DUT to avoid stress on the connection
point and/or accidental disconnection that could lead to short circuiting of the rail
voltage or other damage to the circuit.

• Use extreme caution when using the browser accessory to avoid inadvertent contact
between the ground pin and the conductive browser tip and tip assembly, or from the
browser ground pin to the DC rail.

Avoiding Parasitic Inductance

All ground connections provided with the RP4030 are very short (browser) or coaxial in nature.
This is to ensure any parasitic inductance added to the circuit when the probe connection is
made remains low. If the browser ground lead is increased in length, or if long ground leads are
attached to the coaxial solder-ins, then the parasitic loop inductance of the probe will greatly
increase and the signal fidelity performance will deteriorate. This is seen on the signal as a
“ringing” or a slowing rise time of fast signals. Additionally, large loop areas will pick up any
radiated electromagnetic field which passes through the loop and may induce noise into the
probe input. Verify that no ground loop is present by connecting the ground and tip to the DUT
ground, and validating that a low noise 0 Vdc signal is measured.

TIP: When using the browser tip, keep the browser body perpendicular to the circuit under test.
This will minimize the parasitic capacitance and maintain high performance.

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Connecting to High Impedance Sources

The RP4030 is intended to probe low-impedance DC voltage and power rails. The probe’s input
impedance is optimized to provide a flat frequency response from DC to rated bandwidth when
the source impedance is very low. However, the probe input impedance declines from
50 kΩ at DC to 50 Ω at ~1 MHz. If the source impedance is high, then the decline in probe input
impedance at higher frequencies will have two effects:

• It will reduce the bandwidth rating of the probe

• It may unacceptably load the source

The frequency response and impedance vs. frequency of the probe is described elsewhere, and
those plots describe probe performance with a 0 Ω load. If the source impedance is non-zero,
then the frequency response will degrade, as shown in the plot below:

NOTE: Near-zero source impedance values (~1 Ω, light green) have little impact on probe
performance, while source impedance values approaching 50 Ω have high impact on probe
performance. This is to be expected based on the probe topology.

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RP4030 Power Rail Probe

Using the Solder-in Lead

The MCX cable to solder-in connection is a great
solution for probing DC rails on a crowded board. The
exposed ~3 mm inner conductor connected to the DC
rail and the exposed ~0.5 mm outer conductor is
connected to ground, ideally with as short a ground
lead as possible. The image at left shows the solder­in lead center conductor soldered to the back side of
a capacitor (where the DC power rail is applied) and
the outer conductor (ground) soldered to the ground
pad behind it. In this example, additional outer

conductor was exposed so as to make connection to ground easier.

The solder-in lead may be re-used multiple times. If, after a few solder-in connections, it is
difficult to solder down the cable, trim back the coaxial cable and expose the center conductor
to a short a length as practical (<3 mm will provide the rated frequency response) and expose
enough of the shield to solder to ground. These trimming operations may be performed multiple
times; the shorter length of the cable does not materially affect the frequency response, so this
is not a concern.

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Operator’s Manual

Using the MCX PCB Mounts (Receptacles)

The MCX PCB mount receptacle manufacturer is TE Connectivity and the part number is
1061015-1. This part is exceptionally durable and provides the highest bandwidth connection,
but it has a larger footprint than other solutions. The center pin is soldered to the signal and one
or more of the four posts are soldered to ground. Avoid excessive lateral or vertical force on the
receptacle once it has been installed. For more detail and full instructions, refer to the original
instructions from the manufacturer.

Using the U.FL PCB Mounts (Receptacles)

The U.FL PCB mount receptacle is manufactured by Hirose (P/N U.FL-R-SMT-1, with various
suffixes to indicate the quantity). For more information, refer to the manufacturer’s instructions.

For manual soldering, maximum temperature is 350 °C for five minutes. More specific
instructions are provided by the manufacturer for reflow soldering.

The U.FL PCB mount receptacles are used with the RP4000-MCX-CABLE-UFL cable. To mate the
cable to the receptacle, ensure that the connectors are aligned (avoid any type of extreme
angle) and press the cable plug into the receptacle. A “click” will confirm proper mating. The
images below show two connectors, one unmated with the other mated to an MCX to U.FL
coaxial cable (left) and both mated (right).

Unmated (top left) and mated (right) U.FL PCB mount receptacles.

After the connectors are mated, do not apply a load to the cable in excess of 2 Newtons in a
direction parallel to the mating axis, or in excess of 4 Newtons in a direction perpendicular to
the mating axis. Do not forcefully twist or deform the wires.

To unmate the connectors, insert an edge under the cable plug connector flange, and lift it off
vertically in the direction of the connector mating axis.

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RP4030 Power Rail Probe

Hirose makes a tool to assist in the unmating of the plug and
the receptacle (left), Hirose part number U.FL-LP-N-2, Plug
Extraction Tool. This tool is widely available from distributors
around the world. It fits between the U.FL plug and receptacle
to “pop” the plug out of the receptacle using lever action.

Using the RP4000-BROWSER

The browser is shipped with a pass-through 0 Ω resistor installed for use with the RP4030. To
maintain the high performance capability of the probe in measurement applications, care must
be exercised in connecting the probe to the test circuit. Increasing the parasitic capacitance or
inductance in the input paths may deteriorate the performance by introducing a “ring” or
slowing the rise time of fast signals. To obtain the highest performance, keep the body of the
probe perpendicular to the circuit under test. Insulate areas around the browser with tape to
avoid inadvertent browser ground or DC rail voltages to other components/areas.

A simplified schematic for the RP4000-BROWSER when connected to the RP4030 probe is
shown below, with the simplified RP4030 probe circuit highlighted in gray:

The value of Rp is ~50 Ω.

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Operator’s Manual

Using the RP4000-BROWSER as a Transmission Line Probe

The RP4000-BROWSER accessory is the same as a PP066 Transmission Line Probe, except with
a “pass-through” 0 Ω resistor pre-installed at shipment to provide 1x attenuation when used with
the RP4030. The only resistor that should be installed when the RP4000-BROWSER is used with
the RP4030 is the 0 Ω resistor.

To use the RP4000-BROWSER tip as a transmission line probe, install the supplied 450 Ω (÷10)
or 950 Ω (÷20) probe resistors inside the browser body in place of the 0 Ω resistor:

1. Remove the nose housing by rotating it counter clockwise and pulling it away from the
probe body, taking care not to bend or twist the resistor inside the housing.

2. Pull the resistor straight out of the probe body without twisting or bending the resistor.

3. Gently insert one end of the alternate resistor into the probe body.

NOTE: The 450 Ω (÷10) resistor is directional. Place the dotted end of the resistor
towards the probe side. The 950 Ω (÷20) resistor is not directional.

4. Re-install the nose housing by carefully sliding it over the resistor and screwing it onto
the probe body. Additional nose housings have been supplied to indicate the probe's
attenuation: a black one for the 450 Ω resistor and a blue one for the 950 Ω resistor.

5. Select the proper Attenuation on the input Channel (Cn) setup dialog.

NOTE: The RP4030 will not work properly when a resistor other than 0 Ω is installed in
the RP4000-BROWSER. If the resistor is changed and is not reverted to 0 Ω prior to
using the browser with the RP4030, the voltages displayed on the oscilloscope will be
incorrect. When the RP4000-BROWSER is operated as a conventional transmission line
probe, it connects directly to the oscilloscope input, and Attenuation and Coupling must
be set manually on the input Channel (Cn) dialog.

Below is a simplified schematic for the RP4000 Browser when used as a conventional
transmission line probe. Rs1 is the 450 Ω (10x operation) or 950 Ω (20x operation) accessory
resistor, and Rp is ~60 Ω (10x) or 45 Ω (20x).

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RP4030 Power Rail Probe

Oscilloscope

ProBus interface equipped

Teledyne LeCroy HDO6000,
WaveRunner 6 Zi, WaveRunner 8000

Digital Multimeter

DC: 0.1% accuracy

5.5 digit resolution

Keysight Technologies 34401A

Function Generator

Sine Wave output amplitude

into 1 MΩ at 70 Hz

Teledyne LeCroy WaveStation 3082

Stanford Research Model DS340

BNC Coaxial Cable

Male to Male, 50 Ω, 36"

Pomona 2249-C-36

BNC Tee Connector

Male to Dual Female

Pomona 3285
Banana Plug Adapter

Female BNC to Dual Banana Plug

Pomona 1269

SMA(f) to BNC(m) adapter

Pomona 4289

Calibration Fixture

Probus Extender

LeCroy Probus-CF01

Precision BNC(f) to

±0.05%

LeCroy Term-CF01

Performance Verification

This procedure can be used to verify the warranted characteristics of an RP4030 probe. It tests:

• LF Attenuation Accuracy

• Offset Accuracy

The recommended calibration interval for the RP4030 is one year. Perform the complete
performance verification procedure as the first step of annual calibration. The procedure can be
done without removing the probe covers or exposing the user to hazardous voltages. Test
results can be recorded on a photocopy of the RP4000 Test Record provided in this manual.

Required Test Equipment

The following table lists the test equipment and accessories (or their equivalents) required for
performance verification of an RP4030 Power Rail probe. Because input and output connector
types may vary on different equipment, additional adapters or cables may be required.

Description Minimum Requirements Example Equipment

(2 required)

Dual Banana Plug
50 Ω Termination

AC: 0.1% accuracy

adjustable to 14.14 Vp-p (5 Vrms)

50 Ω

Fluke 8842A-09

Keysight Technologies 33120A

Pomona 5697-36

NOTE: Some test equipment used may have environmental limitations required to meet the
accuracy needed. Make sure that the ambient conditions meet the requirements of all the test
instruments used in this procedure.

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Operator’s Manual

Functional Check

The functional check will verify the basic operation of the probe functions. It is recommended to
perform the functional check prior to the performance verification procedure.

1. Connect the RP4030 probe to the oscilloscope C1 input.

2. Verify that the C1 RP4030 dialog tab appears behind the C1 setup dialog. This confirms
the probe is sensed.

3. Open the C1 RP4030 dialog and touch Auto Zero then OK to Auto Zero the probe.

4. Confirm that the message "Performing Auto Zero on RP4030...." is displayed on the

message bar and that no error messages appear.

Performance Verification Test

Before You Begin

1. Set up the RP4030 and test equipment as shown in the diagram on page 26.

2. Connect the Probus-CF01 to the oscilloscope C1 input.

NOTE: All instructions will refer to C1 as the assumed connection for the Probus-CF01.

3. Turn on the oscilloscope and allow at least 30 minutes warm-up time for the probe
before performing the verification procedure.

4. Turn on the other test equipment and allow these to warm up for the time recommended
by the manufacturer.

5. While the instruments are reaching operating temperature, make a photocopy of the
Performance Verification Test Record, fill in the necessary data, and repeat step 2 of the
“Functional Check” procedure to ensure the Probus-CF01 is working properly.

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RP4030 Power Rail Probe

Performance Verification Test Setup

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Operator’s Manual

Check LF Attenuation Accuracy

1. Connect the RP4030 and test equipment as shown in the diagram on page 26.

2. Set both DMMs to measure Vac.

3. Set the function generator to output a sine wave of 50 Hz, amplitude 200 mVrms, at HiZ.

4. Record the voltage measured on the DMM in "Generator Output Voltage" on the Test
Record (~200 mVAC).

5. Multiply the probe output voltage measured on the DMM by 1.2354 and record the
result in “RP4030 Measured Voltage” on the Test Record.

NOTE: Probe output voltage is shown rounded to 1.2 in the Effective Gain attribute on
the oscilloscope C1 RP4030 dialog.

6. Calculate the attenuation accuracy (%) using the equation:

(

 5 

7. Record the LF attenuation accuracy “Gain Error” on the test record.

 – 

 4 



 4 



)



. 100

Check Offset Accuracy

1. Connect the RP4030 and test equipment as shown in the diagram on page 26.

2. Set both DMMs to measure DC Volts.

3. Set the function generator to output DC Volts.

4. Open the oscilloscope C1 setup dialog (not the C1 RP4030 dialog) and set Coupling to
ground (GND). Ensure that there is 0.00 mV Offset on C1.

5. Multiply the probe output voltage measured on the DMM by 1.2354 and record the
result on the test record in “RP4030 Offset Voltage”.

6. On the C1 setup dialog, reset Coupling to DC.

7. Set the function generator to output +10 Vdc at HiZ.

8. Record the “Generator Output Voltage” measured on the DMM on the test record.

9. Set the C1 Offset to the negative of the generator output value measured on the DMM.

10. Multiply the probe output voltage measured on the DMM by 1.2354 and record the
result on the test record in “RP4030 Measured Voltage”.

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RP4030 Power Rail Probe

11. Calculate the offset accuracy (%) using the equation:

(

 10 

NOTE: Make sure all values are converted to Volts before calculating.

Record the result in Step 11 “Offset Error” on the test record.

 – 

 8 



 5 





)

. 100

12. Set the function generator to output

13. Record the “Generator Output Voltage” measured on the DMM on the test record.

14. Set the C1 Offset to the negative of the generator output value measured on the DMM.

15. Multiply the probe output voltage measured on the DMM by 1.2354 and record the
result on the test record in “RP4030 Measured Voltage”.

16. Calculate the offset accuracy (%) using the equation:

(

 15 

NOTE: Make sure all values are converted to Volts before calculating.

Record the result in Step 16 “Offset Error” on the test record.

This completes the Performance Verification of the RP4030. Complete and file the Test Record
as required to support your internal calibration procedure.

Permission is granted to photocopy the following page and record the results of the
performance verification procedure on the copy. File the completed record as required by
applicable internal quality procedures.

Results recorded under "Test Result" are the actual specification limit check. The test limits are
included in all these steps. Record other measurements and intermediate calculations that
support the limit check under "Intermediate Data".

-10 Vdc at HiZ.

 5 

 – 



 13 

)





. 100

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RP4030 Test Record

Serial Number:

_____________________________________________

Asset/

_________

Date:

_____________________________________________

Technician:

_________

Equipment

Model

Serial Number

Calibration Due Date

Digital Multimeter 1

Digital Multimeter 2

Oscilloscope

Function Generator

N/A*

Step

Description

Intermediate Data

Test Result

4

Generator Output Voltage

mVrms

5

RP4030 Measured Voltage

mVrms

6

Gain Error (< ±1.00%) %

Step

Description

Intermediate Data

Test Result

5

RP4030 Offset Voltage

mVdc

8

Generator Output Voltage

Vdc

10

RP4030 Measured Voltage

mVdc

11

Offset Error (< ±0.10%)* %

13

Generator Output Voltage

Vdc

15

RP4030 Measured Voltage

mVdc

16

Offset Error (< ±0.10%)* %

Operator’s Manual

Tracking Number:

____________________________________

____________________________________

* The function generator is used for making relative measurements. The output of the generator is
measured with a DMM or oscilloscope. Thus, it is not required to calibrate the generator.

LF Attenuation Accuracy

Offset Accuracy

*The actual offset error specification is ±0.1% ±3 mV

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RP4030 Power Rail Probe

Care and Maintenance

Cleaning

Clean the exterior of the probe and cable using only a soft cloth moistened with water or
isopropyl alcohol. The use of abrasive agents, strong detergents or other solvents may damage
the probe.

CAUTION: The probe case is not sealed and should never be immersed in any fluid.

Calibration Interval

The recommended calibration interval is one year. Adjustment should only be performed by
qualified personnel. (A Performance Verification procedure is included in this manual.)

Service Strategy

The RP4030 probe utilizes fine pitch surface mount devices, making it impractical to repair in
the field. Defective probes must be returned to a Teledyne LeCroy service facility for diagnosis
and exchange. A defective probe under warranty will be replaced with a factory refurbished
probe. A probe that is not under warranty can be exchanged for a factory refurbished probe. A
modest fee is charged for this service.

Troubleshooting

If the probe is not operating properly the problem may be the way in which it is used. Before
assuming the probe is defective, verify each of the following:

• The oscilloscope is running the required version of XStreamDSO firmware (see p.5).

• The channel to which the RP4030 is connected displays a probe dialog for the RP4030,

indicating the probe is sensed.

• One of the leads/tips is connected to the MCX termination of the SMA to MCX extension
cable and properly connected to the DUT.

• A suitable offset has been applied to the input so that the signal appears on the
oscilloscope grid. On Teledyne LeCroy oscilloscopes, the input offset displayed on the
oscilloscope is the amount of offset required to zero the applied voltage (e.g., a -1 V
offset is required to vertically center a 1VDC rail on the oscilloscope grid).

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Operator’s Manual

Returning a Product for Service

Contact your regional Teledyne LeCroy service center for calibration or other service. If the
product cannot be serviced on location, the service center will give you a Return Material
Authorization (RMA) code and instruct you where to ship the product. All products returned to
the factory must have an RMA. Return shipments must be prepaid.

Teledyne LeCroy cannot accept COD or Collect shipments. We recommend air-freighting. Insure
the item you’re returning for at least the replacement cost.

1. Remove all accessories from the probe. Do not include the manual.

2. Pack the probe in its case, surrounded by the original packing material (or equivalent).

3. Label the case with a tag containing:

• The RMA

• Name and address of the owner

• Probe model and serial number

• Description of failure or requisite service

4. Package the probe case in a cardboard shipping box with adequate padding to avoid
damage in transit.

5. Mark the outside of the box with the shipping address given to you by Teledyne LeCroy;
be sure to add the following:

• ATTN: <RMA code assigned by the Teledyne LeCroy>

• FRAGILE

6. Insure the item for the replacement cost of the probe.

7. If returning a probe to a different country:

• Mark the shipment as a “Return of US manufactured goods for warranty
repair/recalibration.”

• If there is a cost for the service, list the cost in the value column and the original
purchase price “For insurance purposes only.”

• Be very specific as to the reason for shipment. Duties may have to be paid on
the value of the service.

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Operator’s Manual

Warranty

Teledyne LeCroy warrants this oscilloscope accessory for normal use and operation within
specification for a period of one year from the date of shipment. Spare parts, replacement parts
and repairs are warranted for 90 days.

In exercising its warranty, Teledyne LeCroy, at its option, will either repair or replace any
assembly returned within its warranty period to the Customer Service Department or an
authorized service center. However, this will be done only if the product is determined by
Teledyne LeCroy’s examination to be defective due to workmanship or materials, and the defect
is not caused by misuse, neglect, accident, abnormal conditions of operation, or damage
resulting from attempted repair or modifications by a non-authorized service facility.

The customer will be responsible for the transportation and insurance charges for the return of
products to the service facility. Teledyne LeCroy will return all products under warranty with
transportation charges prepaid.

This warranty replaces all other warranties, expressed or implied, including but not limited to
any implied warranty of merchantability, fitness or adequacy for any particular purposes or use.
Teledyne LeCroy shall not be liable for any special, incidental, or consequential damages,
whether in contract or otherwise.

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RP4030 Power Rail Probe

Certifications

Teledyne LeCroy certifies compliance to the following standards as of the date of publication.
For the current certifications, see the EC Declaration of Conformity shipped with your product.

EMC Compliance

EC DECLARATION OF CONFORMITY - EMC

The RP4030 probes meet the intent of EC Directive 2014/30/EU for Electromagnetic
Compatibility. Compliance was demonstrated to the following specifications as listed in the
Official Journal of the European Communities:

IEC/EN 61326-1:2013 EMC requirements for electrical equipment for measurement, control, and
laboratory use

1

Electromagnetic Emissions:

IEC/EN 55011/A1:2010 Radiated and Conducted Emissions Group 1 Class A

2 3

Electromagnetic Immunity:

IEC/EN 61000-4-2:2009 Electrostatic Discharge, 4 kV contact, 8 kV air, 4 kV vertical/horizontal
coupling planes

4

IEC/EN 61000-4-3/A2:2010 RF Radiated Electromagnetic Field, 3 V/m, 80-1000 MHz; 3 V/m,
1400 MHz - 2 GHz; 1 V/m, 2 GHz - 2.7 GHz

1 To ensure compliance with the applicable EMC standards, use high quality shielded interface cables.

2 This product is intended for use in nonresidential areas only. Use in residential areas may cause electromagnetic

interference.

3 Emissions which exceed the levels required by this standard may occur when the probe is connected to a test object.

4 Meets Performance Criteria “B” limits of the respective standard: during the disturbance, product undergoes a

temporary degradation or loss of function or performance which is self-recoverable.

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Operator’s Manual

AUSTRALIA & NEW ZEALAND DECLARATION OF CONFORMITY - EMC

The probe complies with the EMC provision of the Radio Communications Act per the following
standards, in accordance with requirements imposed by the Australian Communication and
Media Authority (ACMA):

AS/NZS CISPR 11:2009/A1:2010, IEC 55011:2009/A1:2010 Radiated and Conducted Emissions,
Group 1, Class A.

Safety Compliance

EC DECLARATION OF CONFORMITY – LOW VOLTAGE

The probe meets the intent of EC Directive 2014/35/EU for Product Safety. Compliance was
demonstrated to the following specifications as listed in the Official Journal of the European
Communities:

IEC/EN 61010-031:2015 Safety requirements for electrical equipment for measurement, control
and laboratory use – Part 031: Safety requirements for handheld probe assemblies for electrical
measurement and test.

Environmental Compliance

END-OF-LIFE HANDLING

The probe is marked with this symbol to indicate that it complies with the
applicable European Union requirements to Directives 2012/19/EU and 2013/56/EU
on Waste Electrical and Electronic Equipment (WEEE) and Batteries.

The probe is subject to disposal and recycling regulations that vary by country and
region. Many countries prohibit the disposal of waste electronic equipment in
standard waste receptacles. For more information about proper disposal and
recycling of your Teledyne LeCroy product, visit teledynelecroy.com/recycle.

R

ESTRICTION OF HAZARDOUS SUBSTANCES (ROHS)

The product and its accessories conform to the 2011/65/EU RoHS2 Directive.

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