Agilent Technologies N2792A Manual de usuario

N2792A and N2793A

Differential Probes

User’s Guide

Manual Part Number

N2792-97002

December 2013

Notices

Agilent Technologies, Inc

Oscilloscope Products Division

This product complies with the WEEE Directive

(2002/96/EC) marking requirements. The affixed

label indicates that you must not discard this elec-

trical/electronic product in domestic household

waste. Product Category: With reference to the

equipment types in the WEEE Directive Annex I, this product is

classed as a “Monitoring and Control instrumentation” product.

Do not dispose in domestic household. To return unwanted prod-

ucts, contact your local Agilent office, or refer to www.agi-

lent.com for more information.

This symbol indicates the Environmental Pro-

tection Use Period (EPUP) for the product’s

toxic substances for the China RoHS require-

ments.

Restricted Rights Legend

If software is for use in the performance of a U.S. Government

prime contract or subcontract, 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 disclo-

sure of Software is subject to Agilent 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. Government 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

technical data.

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,

Agilent 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 merchant-

ability and fitness for a particular purpose. Agilent shall not be

liable for errors or for incidental or consequential damages in

connection with the furnishing, use, or performance of this docu-

ment or of any information contained herein. Should Agilent 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.

Safety Notices

CAUTION. A CAUTION notice denotes a hazard.

It calls attention to an operating procedure, prac-

tice, 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 operating procedure,

practice, or the like that, if not correctly per-

formed or adhered to, could result in personal

injury or death. Do not proceed beyond a WARN-

ING notice until the indicated conditions are fully

understood and met.

Contents

Introduction 4

Accessories 6

Using the N2792A Probe 9

Using N2793A Probe 11

Safety Information 15

Specifications and Characteristics 16

Performance Plots (N2792A Probe) 19

Performance Plots (N2793A Probe) 23

N2792A Performance Verification Procedures 27

N2793A Performance Verification Procedures 31

Introduction

The N2792A 200 MHz and N2793A 800 MHz differential probes provide the

superior high- speed differential signal probing required by today’s

high- speed power measurements, automotive bus measurements, and

high- speed digital system designs. The N2792A and N2793A probes offer a

10:1 attenuation ratio, allowing them to be used for a broad range of

applications. These differential probes have an input resistance of 1 MW

(N2792A) and 200 kW (N2793A) and both feature low input capacitance to

minimize circuit loading (7 pF for N2792A and 2 pF for N2793A). The

N2792A and N2793A probes are compatible with any oscilloscope equipped

with 50W BNC inputs. They can be powered by any USB port on your

oscilloscope or computer, or by an internal battery (one 9V battery

included with each probe).

Figure 1 Probes (Accessories Not Shown)

Oscilloscope Compatibility

To be compatible with the N2792A and N2793A probes, the oscilloscope

must have a 50Ωinput and be ground referenced.

Handling the Probe

Handle the probe with care and refer to the safety notices in this manual.

Note that the probe cable is a sensitive part of the probe and, therefore,

you should be careful not to damage it through excessive bending or

pulling. You should also avoid any mechanical shocks to this product in

order to guarantee accurate performance and protection.

Cleaning the Probe

Disconnect the probe from the oscilloscope and clean the probe with a soft

cloth dampened with a mild soap and water solution. Make sure that the

probe is completely dry before reconnecting it to an oscilloscope. Avoid

using abrasive cleaners and chemicals containing benzene or similar

solvents.

Inspecting the Probe

■Inspect the shipping container for damage.

Keep the damaged shipping container or cushioning material until the

contents of the shipment have been checked for completeness and the

probe has been checked mechanically and electrically.

■Check the accessories.

■If the contents are incomplete or damaged, notify your Agilent

Technologies Sales Office.

■Inspect the instrument.

■If there is mechanical damage or defect, or if the probe does not operate

properly or pass calibration tests, notify the Sales Office.

If the shipping container is damaged, or the cushioning materials show

signs of stress, notify the carrier as well as the Sales Office. Keep the

shipping materials for the carrier’s inspection. The sales office will arrange

for repair or replacement at Agilent Technologies’ option without waiting

for claim settlement.

Accessories

N2792A

Table 1 lists the accessories included with the N2792A probes.

Replacements can be ordered with the N2792- 68700 replacement kit. The

quantity of each accessory in the kit is the same as listed in the table and

originally provided with the probe. The battery is not included in the kit.

Figure 2 N2792A Supplied Accessories

Table 1 N2792A Accessories

Accessory

Qty

Supplied

Hook Clip (red) 1

Hook Clip (black) 1

Alligator Clip (red) 1

Alligator Clip (black) 1

USB Power Cord (2m) 1

9V Battery 1

N2793A

Table 2 lists the accessories included with the N2793A probes.

Replacements can be ordered with the N2793- 68700 replacement kit. The

quantity of each accessory in the kit is the same as listed in the table and

originally provided with the probe. The battery is not included in the kit.

Figure 3 N2793A Supplied Accessories

Table 2 N2793A Accessories

Accessory

Qty

Supplied

Pincer Clip (red) 1

Pincer Clip (black) 1

Micro IC Clip (red) 1

Micro IC Clip (black) 1

Extension Lead, 0.8 mm J-P, 5 cm (red) 1

Extension Lead, 0.8 mm J-P, 5 cm (black) 1

Extension Lead, 0.8 mm J-P, 10 cm (red) 1

Extension Lead, 0.8 mm J-P, 10 cm (black) 1

Dual Signal Pin, 12.8 mm 2

Dual Signal Pin, 16.8 mm 2

Single Signal Pin, 0.8 mm 6

Variable Pitch Signal Pin 2

DC Blocking Capacitor 2

USB Power Cord (2m) 1

9V Battery 1

Using the N2792A Probe

Before using the probe, you must either

install the supplied 9V battery or plug in the

supplied USB power cord. The USB power

cord can be connected either to the USB

port on a computer or the oscilloscope. To

install the battery, slide open the battery

compartment located on the back side of the

probe housing.

Figure 4 Location of Battery Compartment and USB Power Input

The probe’s BNC output connector connects to the channel input of the

oscilloscope. The oscilloscope must have a 50Winput and be ground

referenced.

WARNING Must be Grounded. Before making connections to the input leads of this probe,

ensure that the output BNC connector is attached to the BNC channel input of the

oscilloscope and the oscilloscope is properly grounded.

CAUTION To protect against electrical shock, use only the accessories supplied with this probe or in

the accessory kit.

CAUTION This probe is to carry out differential measurements between two points on the circuit under

test. This probe is not for electrically insulating the circuit under test and the measuring

instrument.

NOTE When battery life has expired, remove the battery. Observe the WEEE label on the battery

and dispose of properly.

Hook and Alligator Clips

Before you can use the N2792A probe, gently push the supplied hook clips

or alligator clips onto the probe leads as shown in Figure 5. Use the hook

clips to clamp onto smaller components and the alligator clips to clamp

onto thicker gauge devices.

Figure 5 Inserting the Supplied Clips

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