Keysight Technologies N2797A User manual

Keysight N2797A

Extreme Temperature

Single-Ended Active Probe

User’s

Guide

2N2797A User’s 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

N2797-97000

Edition

Second edition, October 2014

Published by:

Keysight Technologies, Inc.

1400 Fountaingrove Parkway

Santa Rosa, CA, 95403

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

warranties, 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 fitness for a particular purpose. Key-

sight shall not be liable for errors or for inci-

dental or consequential damages in

connection with the furnishing, use, or per-

formance of this document or of any infor-

mation contained herein. Should Keysight

and the user have a separate written agree-

ment with warranty terms covering the

material in this document that conflict with

these terms, the warranty terms in the sepa-

rate agreement shall control.

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 operating

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 indicated

conditions are fully understood and

met.

WARNING

A WARNING notice denotes a haz-

ard. It calls attention to an operat-

ing 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.

N2797A User’s Guide 3

Contents

1UsingtheProbe/5

Probe Features / 7

Using the Accessory Tips and Grounds / 14

Dynamic Range and Offset Voltage Limitations / 20

Functional Test / 21

Inspecting the Probe / 22

Cleaning the Probe / 22

Returning the Probe for Service / 23

Safety Information / 24

2ProbeCalibration/27

Calibrating the Probe on Infiniium Oscilloscopes / 28

Calibrating the Probe on InfiniiVision Oscilloscopes / 30

3 Characteristics and Specifications / 31

Dimensions / 33

4PerformanceDataPlots/35

5 Performance Verification / 37

Test 1. DC Input Resistance / 39

Test 2. Bandwidth / 40

Performance Test Record / 46

Index

4N2797A User’s Guide

Contents

Keysight N2797A

User’s Guide

1 Using the Probe

Probe Features 7

Using the Accessory Tips and Grounds 14

Dynamic Range and Offset Voltage Limitations 20

Functional Test 21

Inspecting the Probe 22

Cleaning the Probe 22

Returning the Probe for Service 23

Safety Information 24

The N2797A single-ended active probe is designed to be used in extreme temperatures

environments. With a 2 meter cable and ability to operate in temperatures from –40°C to

+85°C, the N2797A probe is ideal for environmental labs. The probe’s bandwidth is 1.5 GHz.

The N2797A integrates many of the characteristics needed for today’s general-purpose,

high-speed probing, especially in digital system design, component

design/characterization, and educational research applications. Its 1 MΩinput resistance

and extremely low input capacitance (1 pF) provide ultra low loading of the device under

test. This, accompanied with superior signal fidelity, makes this probe useful for most of

today’s digital logic voltages. With a wide ±8V dynamic range and ±12V offset range, this

probe can be used in a wide variety of applications.

For high signal integrity probing, the N2797A 1.5 GHz active probe is a perfect

complements to Keysight’s 500 MHz – 600 MHz and 1 GHz bandwidth scopes.

The probe is powered directly by the InfiniiVision and Infiniium AutoProbe interface,

eliminating the need for an additional power supply. The probe also come with a number of

accessories that allow for easy connections to the circuit under test. Refer to “Supplied

Accessories" on page 8.

WARNING

Handle the probe with care to avoid injury, especially when it is fitted with the sharp spring or rigid tip.

6N2797A User’s Guide

1Using the Probe

CAUTION

This probe is an ESD sensitive devices, particularly at the probe tips. Follow standard ESD precautions

when handling. Remove tip accessories when storing the probe.

CAUTION

Before using the probe, refer to “Safety Information" on page 24.

CAUTION

Handle the probe cable carefully to avoid damaging it through excessive bending or pulling. Avoid any

mechanical shocks to the probe in order to guarantee accurate performance and protection.

Using the Probe 1

N2797A User’s Guide 7

Probe Features

Oscilloscope Compatibility

The N2797A probe is compatible with the Keysight oscilloscopes shown in Table 1. Up to

four probes can be connected to the oscilloscope. The table also lists the minimum required

firmware version for the oscilloscope.

Is Your Oscilloscope Software Up-to-Date? Keysight periodically releases software updates

to support your probe, fix known defects, and incorporate product enhancements. To

download the latest firmware, go to www.keysight.com and search for your oscilloscope’s

topic. Click on the “Drivers, Firmware & Software” tab.

NOTE

The N2797A probe is designed for oscilloscopes with 1 MWAutoProbe-interface channel

inputs.

Table 1 Compatible Oscilloscopes and Support

Oscilloscope Adapter Required

Infiniium Oscilloscopes (firmware version

3.50 or above)

90000 Q-Series N5442A

90000 X-Series N5442A

90000A —

9000 H-Series —

9000A-Series —

InfiniiVision Oscilloscopes (firmware version

2.11 or above)

4000 X-Series —

3000 X-Series —

8N2797A User’s Guide

1Using the Probe

Probe Headlight

The probe is equipped with a white LED headlights to illuminate the area around the probe

tip. This headlight has a fixed intensity and is turned on and off by pressing the button that

is located on the probe’s body.

Figure 1 Headlights and Button

Channel-Identification Rings

When multiple probes are connected to the oscilloscope, the channel identification rings

(yellow, green, blue, and purple) allow you to quickly determine which channel input is

associated with each probe. On the probe, place one colored ring near the probe’s channel

connector and place an identical color ring near the probe head.

Supplied Accessories

The probe comes with the accessories shown in Figure 2.

CAUTION

All of the supplied accessories can be used at the probe’s specified extreme temperature range of –40°C

to +85°C (–40°F to +185°F) except the flex nose clip and pico hook tips. These adapters have a slightly

reduced temperature range of –20°C to +80°C (–4°F to +176°F).

Using the Probe 1

N2797A User’s Guide 9

Figure 2 Accessories Supplied With the Probe (Not to Scale)

10 N2797A User’s Guide

1Using the Probe

Available Accessories

Table 3 shows the replacement accessories available in the N2798A replacement accessory

kit. The table lists the ambient operating temperatures for each accessory. Those

accessories that have the same temperature range as the probe are marked

“extreme temp”.

Table 4 shows additional accessories that work with the probe, but are not provided with

the probe. Notice that most of these accessories can not be used at extreme temperature

range of the probe.

Table 2 Supplied Accessories

Accessory

Ambient Operating

Temperature Quantity

Flex Nose Clip (red) –20°C to +80°C

(–4°F to +176°F)

Flex Nose Clip (black) 2

Pico Hook (red) 1

Pico Hook (black) 1

Rigid Probe Tip Same as probe

–20°C to +85°C

(–4°F to +185°F)

Solderable Tip (0.97 mm square) 10

Ground Blade 2

Y-Lead Adapter, long with damping resistor (9 cm) 2

Y-Lead Adapter, short with damping resistor (6 cm) 2

Right-Angle Ground (5 cm) 2

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