Keysight Technologies N2830A Series Manuel utilisateur

Keysight N2830A-Series

Differential

InfiniiMax III+ Probes

Handling

Guide

Notices

No part of this manual may be reproduced in

any form or by any means (including elec-

tronic storage and retrieval or translation into

a foreign language) without prior agreement

and written consent from Keysight Technolo-

gies, Inc. as governed by United States and

international copyright laws.

Manual Part Number

N2830-97001

Edition

April 2014

Printed in USA

Keysight Technologies, Inc.

1900 Garden of the Gods Rd.

Colorado Springs, CO 80907 USA

Warranty

The material contained in this document is

provided “as is,” and is subject to being

changed, without notice, in future editions.

Further, to the maximum extent permitted by

applicable law, Keysight disclaims all war-

ranties, either express or implied, with regard

to this manual and any information contained

herein, including but not limited to the

implied warranties of merchantability and fit-

ness for a particular purpose. Keysight shall

not be liable for errors or for incidental or

consequential damages in connection with

the furnishing, use, or performance of this

document or of any information contained

herein. Should Keysight and the user have a

separate written agreement with warranty

terms covering the material in this document

that conflict with these terms, the warranty

terms in the separate agreement shall con-

trol.

Technology Licenses

The hardware and/or software described in

this document are furnished under a license

and may be used or copied only in accor-

dance with the terms of such license.

Restricted Rights Legend

If software is for use in the performance of a

U.S. Government prime contract or subcon-

tract, Software is delivered and licensed as

“Commercial computer software” as defined

in DFAR 252.227-7014 (June 1995), or as a

“commercial item” as defined in FAR 2.101(a)

or as “Restricted computer software” as

defined in FAR 52.227-19 (June 1987) or any

equivalent agency regulation or contract

clause. Use, duplication or disclosure of

Software is subject to Keysight Technologies’

standard commercial license terms, and

non-DOD Departments and Agencies of the

U.S. Government will receive no greater than

Restricted Rights as defined in FAR

52.227-19(c)(1-2) (June 1987). U.S. Govern-

ment users will receive no greater than Lim-

ited Rights as defined in FAR 52.227-14

(June 1987) or DFAR 252.227-7015 (b)(2)

(November 1995), as applicable in any tech-

nical data.

Safety Notices

CAUTION. A CAUTION notice denotes

a hazard. It calls attention to an operat-

ing procedure, practice, or the like that,

if not correctly performed or adhered to,

could result in damage to the product or

loss of important data. Do not proceed

beyond a CAUTION notice until the indi-

cated conditions are fully understood

and met.

WARNING. A WARNING notice

denotes a hazard. It calls attention to

an operating procedure, practice, or the

like that, if not correctly performed or

adhered to, could result in personal

injury or death. Do not proceed beyond

a WARNING notice until the indicated

conditions are fully understood and

met.

N2830A-Series Probes

Handling Guide

Proper Handling Techniques

Use a Static-Safe Work Station 4

Safely Connecting the Probe to an Oscilloscope 6

Safely Disconnecting the Probe from an Oscilloscope 8

Probing a DUT 9

In this guide, you’ll learn how to properly handle the probe to

prevent damage and maintain high performance. For more

safe-handling information, go to www.keysight.com and search for

InfiniiMax III ESD Best Practices demo video.

CAUTION InfiniiMax I and II probe heads cannot be used with Infiniimax III+ probe

amplifiers and InfiniiMax III+ probe heads cannot be used with InfiniiMax I

and II amplifiers.

N2830A-Series Probes

Handling Guide

Use a Static-Safe Work Station

InfiniiMax probes and accessories are ESD sensitive devices and

should be treated with care. Before using or handling the probe or

accessories, always wear a grounded ESD wrist strap and ensure

that cables and probe heads are discharged before being

connected. All work, including connecting probe amplifiers to the

oscilloscope, should be performed at a static-safe work station as

shown in Figure 1.

CAUTION Electrostatic discharge (ESD) can quickly and imperceptibly damage or

destroy high-performance probes, resulting in costly repairs. Always wear a

wrist strap when handling probe components.

Figure 1 Static-Safe Work Station

N2830A-Series Probes

Handling Guide

Many scopes including Keysight’s 90000X series have a front-panel

ground socket. You can plug the wrist strap into the ground socket

as seen in the following picture.

Figure 2 Wrist Strap Connected to Oscilloscope Ground Socket

The static-safe work station shown in Figure 1 uses two types of

ESD protection:

■Conductive table-mat and wrist-strap combination.

■Conductive floor-mat and heel-strap combination.

Both types, when used together, provide a significant level of ESD

protection. Of the two, only the table-mat and wrist-strap

combination provides adequate ESD protection when used alone.

To ensure user safety, the static-safe accessories must provide at

least 1 MΩof isolation from ground. Purchase acceptable ESD

accessories from your local supplier.

WARNING These techniques for a static-safe work station should not be used when

working on circuitry with a voltage potential greater than 500 volts.

N2830A-Series Probes

Handling Guide

Safely Connecting the Probe to an Oscilloscope

To protect against ESD damage, always use the four steps shown

in Figure 4 on page 7 when connecting your probe to the

oscilloscope.

CAUTION Avoid damaging the probe amplifier connection pins. As shown in Figure 3,

never bend the probe head in order to “pop” it loose from the amplifier. Do

not wiggle the probe head up and down or twist it to remove the connectors

from the sockets.

CAUTION Never allow the probe head to be connected to the probe amplifier, if the

probe amplifier is not connected to the oscilloscope channel.

CAUTION Always disconnect an N2836A or N5441A solder-in probe head from the

probe amplifier before un-soldering, moving to a new position, and

re-soldering the head.

To connect a probe head to the probe amplifier, push the

connections straight in.

Figure 3 Disconnecting the Probe Head From the Amplifier

N2830A-Series Probes

Handling Guide

Figure 4 Connecting the Probe to the Oscilloscope

N2830A-Series Probes

Handling Guide

Safely Disconnecting the Probe from an Oscilloscope

Always disconnect the probe head from the probe amplifier before:

■disconnecting the probe amplifier from the oscilloscope.

■moving the probe amplifier from one oscilloscope channel to

another.

CAUTION Never allow the probe head to be connected to the probe amplifier, if the

probe amplifier is not connected to the oscilloscope channel.

Figure 5 Probe Improperly Disconnected from Oscilloscope While Probe

Head is Connected to the Probe Amplifier

N2830A-Series Probes

Handling Guide

Probing a DUT

The probe has been designed to withstand a moderate amount of

physical and electrical stress. However, with an active probe, the

technologies necessary to achieve high performance do not allow

the probe to be unbreakable. Treat the probe with care. It can be

damaged if excessive force is applied to the probe tip. This damage

is considered to be abuse and will void the warranty when verified

by Keysight Technologies service professionals.

When the probe amplifier is not in use, store it in the probe case.

Coil the probe cable with these tips in mind:

■Keep the coil’s radius fairly large so as not to induce kinking or

bending. Use a similar technique as when coiling an extension

cord.

■Avoid twisting the cable when coiling by introducing a very

slight twist with each coil. This allows the cable rotations to lie

flat against each other and will eliminate the net twisting of the

cable in the end.

CAUTION Probes are sensitive devices and should be treated with care. Do not bend or

kink the probe amplifier cable. Do not drop heavy objects on the probe, drop

the probe from large heights, spill liquids on the probe, etc. Any of these

examples can significantly degrade the performance of the probe.

CAUTION Do not replace or repair the N2849A QuickTip’s resistor or ground leads.

Attempting to do so will damage the ability of the tip to mate with the

N2848A probe head.

CAUTION Always mechanically strain-relieve the N2848A QuickTip head and N5439A

ZIF head before using to protect both your probe accessories and DUT from

damage.

CAUTION Using the N2787A 3D probe positioner with the N5445A browser probe head

reduces the chance of breaking the browser tips and ensures that the tips

maintain solid contact.

N2830A-Series Probes

Handling Guide

Moving the Probe to

Different Locations

When making your measurements, you’ll often need to probe

different locations on the DUT. You can safely move any of the

following three probe heads without having to first break the

amplifier-to-head connection:

■N5445A differential browser head

■N5439A ZIF head,

■N5444A 2.92 mm/3.5 mm/SMA head.

The only exception is when the DUT is not grounded to the

oscilloscope via the AC mains ground. In this case, connect the

DUT ground to the oscilloscope ground before moving the probe.

An example of a device having a floating ground would be a

battery-powered DUT.

CAUTION Always disconnect an N2836A or N5441A solder-in probe head from the

probe amplifier before un-soldering, moving to a new position, and

re-soldering the head. This is needed as some soldering-iron tips can hold a

charge which can damage the probe amplifier.

Strain Relieving the

Probe Heads

High-performance probes have small physical geometries to

ensure the lowest possible loading and best electrical response.

Because of their small size, probing accessories are often delicate.

It is important to mechanically secure your probes to protect both

your equipment and designs from damage. Although tack putty

and low-temperature hot glue are recommended, you can also use

other methods such as tape or hook-and-loop strain relief. Keep in

mind that different accessories have different cable stiffness. You

should choose a strain relief method appropriate for the cable

stiffness. For instance, it is best to secure the stiffer N5439A near

the SMP connectors and form the cable to the optimal location.

CAUTION Do not kink cables. Do not crush cables. Do not use aggressive adhesives or

high temperatures

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