Keysight 41800A Operation Note

Download

Artisan Technology Group is your source for quality

new and certied-used/pre-owned equipment

• FAST SHIPPING AND

DELIVERY

• TENS OF THOUSANDS OF IN-STOCK ITEMS

• EQUIPMENT DEMOS

• HUNDREDS OF MANUFACTURERS

SUPPORTED

• LEASING/MONTHLY RENTALS

• ITAR CERTIFIED SECURE ASSET SOLUTIONS

SERVICE CENTER REPAIRS

Experienced engineers and technicians on staff at our full-service, in-house repair center

Instra

Remotely inspect equipment before purchasing with our interactive website at www.instraview.com

REMOTE INSPECTION

View

WE BUY USED EQUIPMENT

Sell your excess, underutilized, and idle used equipment We also offer credit for buy-backs and trade-ins

www.artisantg.com/WeBuyEquipment

LOOKING FOR MORE INFORMATION?

Visit us on the web at www.artisantg.com for more information on price quotations, drivers, technical

specications, manuals, and documentation

Keysight 41800A Active Probe

*KEYSIGHT

TECHNOLOGIES

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

Operation Note

NOTICE: This document contains references to Agilent

Tech n o l o g i e s . Agil ent 's former Test and Measurement

business has become Keysight Technologies. For more information, go to www.keysight.com.

1 ii k G KEYSI TECHNOLOGIESH T

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

Caution

The 41800A is sensitive to electrostatic discharge (ESD). The followings must be adhered to when using the 41800A.

• Do NOT touch the pin of the probe.

• Eliminate ESD on your body.

• Eliminate ESD on the work surface.

• Hold the probe by the protective sleeve.

• Do NOT introduce ESD into the DUT while the probe is in use.

41800A

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

MANUAL CHANGES

Agilent 41800A

Active Probe

Operation Note

MANUAL IDENTIFICATION

Model Number: Agilent 41800A

Date Printed: December 1999

Part Number: 41800-90010

This supplement contains information for correcting manual errors and for adapting the manual to newer instruments that contains

improvements or modifications not documented in the existing manual.

To use this supplement

1. Make all ERRATA corrections

2. Make all appropriate serial-number-related changes listed below

SERIAL PREFIX OR NUMBER MAKE MANUAL

CHANGES

All 1, 2

♦ New Item

New Item



SERIAL PREFIX OR NUMBER MAKE MANUAL

CHANGES

ERRATA

 

CHANGES 1



CHANGE 1 contains the information needed to adapt the 41800A's manual.

CHANGE 1 contains the information needed to adapt the 41800A’s manual.

Page 1-5 Table 1-3. Specifications (2 of 3)

Change the 'Maximum Allowable Input (DC+AC):' as follows.

Change the ‘Maximum Allowable Input (DC+AC):’ as follows.

Maximum Allowable Input:

AC+DC: ±40 V (probe alone and probe with divider)

AC+DC:±40 V (probe alone and probe with divider) AC: 0.5Vrms (probe alone) AC: 0.5Vrms (with 1:1 divider) AC: 5Vrms (with 10:1 divider) AC: 30Vrms (with 100:1 divider)

Manual change supplement are revised as often as necessary to keep manuals as current and accurate as possible. Agilent Technologies

Manual change supplement are revised as often as necessary to keep manuals as current and accurate as possible. Ag ile nt Technologies recommends that you periodically request the latest edition of this supplement. Free copies are available from all Ag ile nt Technologies offices.

recommends that you periodically request the latest edition of this supplement. Free copies are available from all Agilent Technologies offices. When requesting copies, quote the manual identification information from your supplement, or the model number and print date from the title

When requesting copies, quote the manual identification information from your supplement, or the model number and print date from the title page of the manual.

page of the manual.

Date/Div: September,2012/WN

Page 1 of 2

PRINTED IN MALAYSIA

AC: 0.5Vrms (probe alone)

AC: 0.5Vrms (with 1:1 divider)

AC: 5Vrms (with 10:1 divider)

AC: 30Vrms (with 100:1 divider)

NOTE

Agilent Technologies

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

Change 2

CHANGE 2 contains the information needed when the external DC power supply adapter cable (Agilent part

number: 87405-20012) is used with the 41800A.

Description

When using the 41800A with the instrument that does not supply probe power, you can use the external power supply and

the cable (Agilent part number: 87405-20012) to supply a power to the active probe. The cable is furnished with the 41800A

when the option 41800A-001 is ordered.

Required power supply

One of the following Agilent external power supplies needs to be used.

E3620A, E3630A, E363 lA

E3620A, E3630A, E3631A

Cable connection

The user needs to ensure the correct cable connection as shown below.

• Green plug of the cable - Green terminal of the power supply

 Green plug of the cable - Green terminal of the power supply

• Red plug of the cable - Red terminal of the power supply

 Red plug of the cable - Red terminal of the power supply

• Black plug of the cable - Black terminal of the power supply

 Black plug of the cable - Black terminal of the power supply

Power level setting

The user needs to ensure the correct power level setting of the power supply (+15 V and -12.6 V) per attached labels on the

cable. Power requirements of the 41800A are as follows.

• Green: Ground

 Green: Ground

• Red: +15 V ± 5 %

 Red: +15 V ±5 %

• Black: -12.6 V ±20 %

 Black: -12.6 V ±20 %

Warning Failure to comply with the descriptions in "Required power supply," "Cable connection," and "Power level

Warning Failure to comply with the descriptions in “Required power supply,” “Cable connection,” and “Power level

setting" section may cause overheating or smoking of the 41800A. Ag ilent Technologies, Inc. assumes no

setting” section may cause overheating or smoking of the 41800A. Agilent Technologies, Inc. assumes no

liability for customer's failure to comply with these requirements.

liability for customer’s failure to comply with these requirements.

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

Agilent 41800A Active Probe

Operation Note

Third Edition

SERIAL NUMBERS

This manual applies directly to Agilent 41800A Act ive Probe with serial number prefix 2850J.

Agilent Technologies

Innovating the HP Way

Agilent Part No. 41800-90010

December 1999

Printed in Japan

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

Notices

The information contained in this document is subject to change without notice.

This document contains proprietary information that is protected by copyright. Al l rights are reserved. No part of this document may be photocopied, reproduced, or translated to another language without the prior written consent of the Ag ilent Technologies.

Agilent Technologies Japan, Ltd.

Component Test PGU-Kobe

1-3-2, Murotani, Nishi-Ku, Kobe-shi, Hyogo, 651-2241 Japan

Manual Printing History

The manual's printing date and part number indicate its current edition. The printing date changes when a new edition is printed. (Minor corrections and updates that are incorporated at reprint do not cause the date to change.) The manual part number changes when extensive technical changes are incorporated.

December 1988 First Edition (part number: 41800-90000)

November 1998 Second Edition (part number: 41800-90010)

December 1999 Third Edition (part number: 41800-90010)

Safety Summary

The following general safety precautions must be observed during all phases of operation, service, and repair of this instrument. Failure to comply with these precautions or with specific WARNINGS elsewhere in this manual may impair the protection provided by the equipment. In addition it violates safety standards of design, manufacture, and intended use of the instrument.

Agilent Technologies assumes no liability for the customer's failure to comply with these requirements.

• Ground The Instrument

To avoid electric shock hazard, the instrument chassis and cabinet must be connected to a safety earth ground by the supplied power cable with earth blade.

• DO NOT Operate In An Explosive Atmosphere

Do not operate the instrument in the presence of flammable gasses or fumes. Operation of any electrical instrument in such an environment constitutes a definite safety hazard.

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

• DO NOT Substitute Parts Or Modify Instrument

Because of the danger of introducing additional hazards, do not install substitute parts or perform unauthorized modifications to the instrument. Return the instrument to a Agilent Technologies Sales and Service Office for service and repair to ensure that safety features are maintained.

• Dangerous Procedure Warnings

Warnings, such as the example below, precede potentially dangerous procedures throughout this manual. Instructions contained in the warnings must be followed.

Safety Symbol

General definitions of safety symbols used on the instrument or in manuals are listed below.

Instruction Manual symbol: the product is marked with this symbol when it is necessary for the user to refer to the instrument manual.

Alternating current.

Direct current.

On (Supply).

Off (Supply).

In position of push-button switch.

Out position of push-button switch.

Frame (or chassis) terminal. A connection to the frame (chassis) of the equipment which

normally include all exposed metal structure.

WARNING

CAUTION

NOTE Note denotes important information. It calls attention to a procedure, practice, condition or

This warning sign denotes a hazard. It calls attention to a procedure, practice, condition or the like, which, if not correctly performed or adhered to, could result in injury or death to personnel.

This Caution sign denotes a hazard. It calls attention to a procedure, practice, condition or the like, which, if not correctly performed or adhered to, could result in damage to or destruction of part or all of the product.

the like, which is essential to highlight.

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

Certification

Agilent Technologies certifies that this product met its published specifications at the time of shipment from the factory. Agilent Technologies further certifies that its calibration measurements are traceable to the United States National Institute of Standards and Technology, to the extent allowed by the Institution's calibration facility, or to the calibration facilities of other International Standards Organization members.

Warranty

This Agilent Technologies instrument product is warranted against defects in material and workmanship for a period corresponding to the individual warranty periods of its component products. Instruments are warranted for a period of one year. Fixtures and adapters are warranted for a period of 90 days. During the warranty period, Ag ilent Te ch n olo g ies will, at its option, either repair or replace products that prove to be defective.

For warranty service or repair, this product must be returned to a service facility designated by Agilent Technologies. Buyer shall prepay shipping charges to Agile nt Technologies and Agilent Technologies shall pay shipping charges to return the product to Buyer. However, Buyer shall pay all shipping charges, duties, and taxes for products returned to Ag ilent Te ch n olo g ies from another country.

Agilent Technologies warrants that its software and firmware designated by Agi lent Te ch n o lo g ie s for use with an instrument will execute its programming instruction when

property installed on that instrument. Agilent Technologies does not warrant that the

operation of the instrument, or software, or firmware will be uninterrupted or error free.

Limitation of Warranty

The foregoing warranty shall not apply to defects resulting from improper or inadequate maintenance by Buyer, Buyer-supplied software or interfacing, unauthorized modification or misuse, operation outside the environmental specifications for the product, or improper site preparation or maintenance.

IMPORTANT No other warranty is expressed or implied. Agilent Technologies specifically disclaims the

implied warranties of merchantability and fitness for a particular purpose.

Exclusive Remedies

The remedies provided herein are buyer's sole and exclusive remedies. Ag ilent

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

Technologies shall not be liable for any direct, indirect, special, incidental, or consequential damages, whether based on contract, tort, or any other legal theory.

Assistance

Product maintenance agreements and other customer assistance agreements are available for Agilent Technologies products.

For any assistance, contact your nearest Agilent Technologies Sales and Service Office. Addresses are provided at the back of this manual.

Typeface Conventions

Bold Boldface type is used when a term is defined. For

example: icons are symbols.

Italic Italic type is used for emphasis and for titles of

manuals and other publications.

[Hardkey] Indicates a hardkey labeled "Hardkey."

Softkey Indicates a softkey labeled "Softkey."

[Hardkey] - Softkey1 - Softkey2 Indicates keystrokes [Hardkey] - Softkey1 -

Softkey2.

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

TABLE OF CONTENTS

SECTION 1: GENERAL INFORMATION

INTRODUCTION 1-1 PRODUCT DESCRIPTION 1-1 COMPATIBLE INSTRUMENTS 1-1 SAFETY CONSIDERATIONS 1-1 UNITS COVERED BY THIS OPERATION NOTE 1-2 PRODUCT CONTENTS 1-3 SPECIFICATIONS 1-3 ACCESSORIES AVAILABLE 1-3

SECTION 2: INSTALLATION

SECTION CONTENTS 2-1 INITIAL INSPECTION 2-1 POWER REQUIREMENTS 2-3 MATING CONNECTORS 2-3 ENVIRONMENTAL REQUIREMENTS 2-3 PACKAGING 2-4

Original Packaging 2-4 Other Packaging 2-4

SECTION 3: OPERATION

SECTION CONTENTS 3-1 OVERVIEW 3-1 OPERATING PRECAUTIONS 3-5

Anti-static Precautions 3-5 Maximum Allowable Level 3-6 Discharging The Probe 3-6

PREPARATION FOR USE 3-7

Operating Check Using The HP 4195A 3-8 Operating Check Using Network Analyzer 3-10 Operating Check Using Spectrum Analyzer 3-11 10:1 / 100:1 Divider Adjustments 3-12

TYPICAL MEASUREMENT SETUPS 3-14

Network Measurements 3-15 Spectrum Measurements 3-18

PROBE PIN REPLACEMENT 3-20

iii

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

SECTION 4: PERFORMANCE TEST

INTRODUCTION 4-1 EQUIPMENT REQUIRED 4-1 CALIBRATION CYCLE 4-2 PREPARATION 4-2 PROBE GAIN/FREQUENCY RESPONSE TESTS 4-3 1 dB GAIN COMPRESSION TEST 4-8

SECTION 5: ADJUSTMENTS

INTRODUCTION 5-1 EQUIPMENT REQUIRED 5-1 PREPARATION 5-1 LF GAIN/FLATNESS ADJUST ME NT 5-2

SECTION 6: SERVICE

INTRODUCTION 6-1 REPLACEABLE PARTS 6-1

DISASSEMBLY 6-5 THEORY OF OPERATION 6-10 TROUBLESHOOTING GUIDE 6-10

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

SECTION 1

GENERAL INFORMATION

INTRODUCTION This section provides the specifications and the information

necessary for receiving, performing an incoming inspection, and preparing the HP 41800A for use.

PRODUCT

DESCRIPTION The HP 41800A is an Active Probe used with network and spec-

trum analyzers for circuit signal analysis. The following are the main features of the HP 41800A.

• Wide frequency range; 5 Hz to 500 MHz

• High input impedance; 100 ks), 3 pF

• Used for both spectrum and network analyzers

• Protective sleeve (to protect the probe tip from ESD and physical damage)

COMPATIBLE

INSTRUMENTS The HP 41800A can be used with the spectrum and network

analyzers listed in Table 1-1 which provide a probe power supply.

Table 1-1. Compatible instruments

Network/Spectrum

Analyzer

HP 4195A

Spectrum Analyzer

HP 3585A/B HP 8568B HP 71100A

Network Analyzer

HP 3577A HP 8753A/B

SAFETY

CONSIDERATIONS The HP 41800A Active Probe conforms to the safety requirements

for IEC 348, and CSA 556B rated instruments, and is shipped from the factory in a safe condition. This operation note contains information, CAUTIONS and WARNINGS which must be followed by the user to ensure safe operation.

1.1

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

UNITS COVERED BY THIS OPERATION

NOTE Hewlett-Packard uses a two-part, nine character serial number

which is stamped on the serial number plate (see Figure 1-1) attached to the probe. The first four digits and a letter are the prefix and the last five digits are the suffix of the serial number. The letter in the serial number identifies the country where the instrument was manufactured. The prefix is same for all identical instruments, it changes only when a change is made to the in- strument. The suffix, however, is assigned sequentially and is different for each instrument. This operation note applies to instruments with serial number prefixes listed under Serial Num- bers on the title page.

L Y OKOGAWA HEWLETT PACKARD

SERIAL NO

MADE IN JAPAN

Figure 1-1. Serial Number Plate

Units manufactured after this operation note was printed may have a serial number prefix which is not listed on the title page.

An unlisted serial number prefix indicates that the instrument may

be different from those described in this operation note. Opera-

tion notes for new instruments may be accompanied by a yellow

Manual Supplement page, or have a different part number. This supplement contains "Change Information" explaining how to adapt this operation note to newer instruments.

In addition to change information, the supplement may contain information for correcting errors (Errata) in previous operation notes. To keep this operation note as current and accurate as possible, Hewlett-Packard recommends that you periodically request the latest Manual Change supplements. The supplement for this operation note is identified by the Print Date and Part Number, both of which appear on the operation note's title page.

For information concerning the serial number prefixes not listed on the title page or in the Manual Change supplements, contact your nearest Hewlett-Packard sales office.

1-2

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

PRODUCT

CONTENTS Ta b l e 1-2 lists the contents of the HP 41800A. Refer to Figure 2-1

for details.

Table 1-2. Contents of the HP 41800A

Description

Probe Assembly HP 10218A Probe-BNC (m) Adapter 1 10:1 Divider 100:1 Divider 1 Slip-on Spanner Ground Tip 1 Ground Clip (flexible) 1 Probe Tip Nut Driver (3/32 inch) HP 10229A Hook Tip Adapter Spare Probe Pin Set Carrying Case 1

SPECIFICATIONS The specifications for the HP 41800A Active Probe are listed in

Ta bl e 1-3. The specifications are performance standards or limits. The HP 41800A meets all of the specifications listed in Table 1-3 when it is shipped from the factory.

Qty.

1 1 1

ACCESSORIES AVAIL ABLE

For making certain types of measurements and for convenience in connecting samples, the accessories listed in Table 1-4 are

available.

Ta bl e 1-4. Available Accessories

Description

Probe Power Supply N (m) Adapter Probe Power Divider

1-3

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

HP Model Number

HP 1122A HP 11880A HP 41801A

Table 1-3. Specifications (1 of 3)

• Specifications describe the instrument's warranted performance over the tem- perature range of 23 ±5°C (except where noted).

• The following performance is specified when the probe is terminated with an HP 11880A Type N Adapter.

• Supplemental characteristics are intended to provide information useful in ap- plying the instrument by giving non-warranted performance parameters. These are denoted as "typical", "nominal", or "approximate".

Bandwidth: 5 Hz to 500 MHz

Probe Gain:

Probe Alone: 0 dB ±0.5 dB at 50 MHz

With 10:1 Divider (Typical): -20 dB ± 1 dB at 50 MHz

With 100:1 Divider (Typical): -40 dB ±1.5 dB at 50 MHz

Input R, C (Typical):

Probe Alone: 100 Kn, 3 pF

With 10:1 Divider: 1 MQ, 1.5 pF

With 100:1 Divider: 1 MS2, 1 pF

Frequency Response Relative to 50 MHz:

Probe Alone: +1/-2 dB at <50 Hz

±1 dB at 50 Hz to 200 MHz +1.5/-2 dB at >200 MHz

With 10:1 Divider (Typical): +1.5/-2.5 dB at <50 Hz

±1.5 dB at 50 Hz to 200 MHz

+2/-2.5 dB at >200 MHz

With 100:1 Divider (Typical): +2/-3 dB at <50 Hz

±2 dB at 50 Hz to 200 MHz

+2.5/-3 dB at >200 MHz

1-4

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

Table 1-3. Specifications (2 of 3)

Noise Level [ V/Fli]

Average Noise Level (Typical):

10 nV/s/Hz at >300 kHz +3 dB/Oct at <300 kHz (Refer to the following figure.)

10 100 1k

10k 100k 300k 1M 10M 100M 500M

Frequency ( f) [ Hz

2nd Harmonic Distortion (Typical):

<-50 dBc at -20 dBm (250 MHz) input

3rd Order Intermodulation Distortion (Typical):

<-70 dBc at -26 dBm two signals input (400 MHz,

400.5 MHz)

1 dB Gain Compression: >+3 dBm input at 500 MHz

Maximum Allowable Input (DC+AC): ±50 V (probe alone)

±200 V (with divider)

1-5

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

Table 1-3. Specifications (3 of 3)

Output Connector: 50 f2 Type N male

Power: +15 V/60 mA, -12.6 V/60 mA

Weight: 0.3 kg (probe alone)

2 kg (included accessories)

Length: approximately 1.2 m

Operating Temperature Humidity:

0 °C to 55 °C, RH <95 % (40 °C)

Furnished Accessories:

HP 10218A Probe-BNC (m) Adapter 10:1 Divider 100:1 Divider Slip-on Spanner Ground Tip Ground Clip (flexible) Probe Tip Nut Driver (3/32 inch) HP 19229A Hook Tip Adapter Spare Probe Pin Set Carrying Case

1-6

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

INSTALLATION

SECTION CONTENTS

INITIAL INSPECTION

SECTION 2

This section contains the following information.

• Initial Inspection

• Power Requirements

• Mating Connector

• Environmental Requirements

• Packaging

CAUTION

Electrostatic Discharge (ESD) can damage the HP 41800A probe's highly sensitive input amplifier. NEVER touch the probe pin!

The HP 41800A Active Probe meets all of the specifications listed

in Table 1-4. Upon receipt, inspect the shipping container for

damage. If the shipping container or the cushioning material has

been damaged, keep the container and packing material until the contents have been checked for completeness and the HP

41800A has been mechanically and electrically checked out.

Figure 2-1 shows the product overview of the HP 41800A. The procedures for checking the general electrical operation are given

in SECTION 4, PERFORMANCE TEST.

If anything is missing, damaged (scratches, dents, broken con- nectors, etc.), or if performance does not meet the specified performance test limits, notify the nearest HP sales office (see the list at the back of this operation note). The HP sales office will immediately arrange for repair or replacement without waiting for a claim settlement.

2-1

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

(10)

(1)

(2)

1 A gil ent internal-only part number.

(3)

No.

(1) Probe Assembly PN 41800-610011 (2) Probe-BNC (m) Adapter HP 10218A

(3) (4) 100:1 Divider PN 41800-60012

(5) (6) Ground Clip (flexible) PN 01123-61302

(7) (8)

(9)

(10) Carrying Case PN 41800-60001

(4)

10:1 Divider PN 41800-60011

Slip-on Spanner Ground Tip

Probe Tip Nut Driver (3/32 inch) HP 10229A Hook Tip Adapter HP 10229A Spare Probe Pin Set PN 41800-60021 (12 mil pin x3, 30 mil pin x3)

(5)

Description

Figure 2-1. Product Overview

(6)

2-2

(7)

HP Part Number

PN 5060-0549

PN 8710-1806

(9)

Qty.

1 1 1 1

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

POWER

REQUIREMENTS Power for the HP 41800A is supplied by the Compatible Instru-

ments listed in Table 1-1 by connecting the HP 41800A's power plug to the probe power jack on the instrument. If the instrument used with the HP 41800A does not have a probe power supply, use a separate power supply which meets the requirements listed in Table 2-1. The HP 1122A Probe Power Supply meets these requirements and it accepts the HP 41800A's probe power plug directly.

Table 2-1. Probe Power Requirements

1 3

2 GN D

As looking into the probe's power plug.

Voltage

-12.6 V ±20% 60 mA

+15 V ±-5%

Current

60 mA

MATING

CONNECTORS The output connector of the HP 41800A probe is a 50 S2 N-type

male connector. Trying to mate this 50 1 N-type connector to a 75 n N-type connector will result in damage to both connectors.

Keep the N-type output connector clean.

ENVIRONMENTAL

REQUIREMENTS The HP 41800A may be stored or shipped under the following

environmental conditions.

• Temperature : -40 °C to +70 °C

The unit must be protected from temperature extremes which can cause condensation.

2-3

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

PACKAGING This paragraph describes how to repackage the HP 41800A for

shipment when necessary.

Original Packaging Containers and packing material identical to those used in factory

packaging are available from Hewlett-Packard. If the unit is being

returned to Hewlett-Packard for servicing, attach a tag indicating the type of service required, return address, model number and full serial number.

Other Packaging

The following general instructions should be used for repacking with commercially available materials.

1. Wrap the unit in heavy paper or plastic. If shipping to a HP sales office or service center, attach a tag indicating

the type of service required, return address, model num- ber, and full serial number.

2. Use a strong shipping container. A double-walled carton

made of 350 pound test material is adequate.

3. Use enough shock absorbing material (a 3 to 4 inch layer)

around all sides of the unit to provide a firm cushion and to prevent the unit from moving around inside the container.

4. Securely seal the shipping container.

5. Mark the shipping container FRAGILE to ensure careful

handling.

6. In any correspondence, refer to unit by its model number

and its full serial number.

2-4

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

OPERATION

SECTION CONTENTS

SECTION 3

This section provides the following information.

• Overview

• Operation Precautions

• Preparation For Use

• Typical Measurement Setups

• Probe Pin Replacement

OVERVIEW

This paragraph provides a description of the probe assembly and each of its furnished accessories including their usage. Figure 3-

1 shows an overview of the HP 41800A probe assembly and Figure 3-2 shows the accessories furnished with the HP 41800A.

Output Connector

(50 n type-N male)

Probe wand

Probe Tip

Protective Sleeve

Figure 3-1. HP 41800A Probe Assembly

3-1

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

Probe Pin

Probe Assembly [Protective Sleeve]

The HP 41800A probe assembly is equipped with a grounded

protective sleeve to protect the probe tip from mechanical abuse

and to reduce the chance of ESD damage. Extend the protective

sleeve when not actually making measurements.

To retract the protective sleeve of the probe, perform the follow-

ing procedure.

1. Hold the probe wand, pointing the pin away from you, and grasp the protective sleeve in your other hand.

2. Turn the protective sleeve counter-clockwise a little.

3. Pull the sleeve slowly toward you.

4. Turn the sleeve clockwise a little to lock it in position.

To extend the protective sleeve, perform the above steps in re-

verse order.

3-2

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

10:1

Divider

100:1

Divider

HP 10229A

Hook Tip

Adapter

HP 10218A

Probe-BNC(m)

Adapter

HP 10218A Probe-BNC(m)

Adapter This is used to change the probe input to BNC(m) connector. To

10:1 Divider This is used to divide the probe input level by a factor of 10.

100:1 Divider This is used to divide the probe input level by a factor of 100.

Slip-on Spanner Ground Tip This is used to ground the probe. Put this ground tip on the

Slip-on Spanner Ground

Ground Tip Clip

Figure 3-2. HP 41800A Furnished Accessories

change the probe input to the BNC 5052 system, insert the probe into this adapter and connect a 5052 feed-through termination.

Before using this divider, the divider adjustment should be per- formed (refer to page 3-7, PREPARATION FOR USE).

probe to probe a test point and a ground point simultaneously.

Probe Tip

Nut Driver

30 mil 12 mil

Spare Spare

Probe Pins Probe Pins

Ground Clip This is used to ground the probe. When a test point and a

ground point cannot be probed simultaneously, put this ground clip on the probe and connect the alligator clip of the ground clip to a ground point.

NOTE

Select the grounding devices (slip-on spanner ground tip and

ground clip) for as short a ground path as possible. The effects of improper grounding become greater as the fre- quency increases. For optimum measurements in a factory environment, design your circuits with ground plane feedthroughs next to each test point.

3-3

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

Probe Tip Nut Driver This is used to replace the probe pin. Refer to page 3-22, PROBE

PIN REPLACEMENT.

HP 10229A Hook Tip Adapter This is used to hook on to the test point of the device under test.

Probe Pins Two kinds of probe pins, 12 mil pin and 30 mil pin, are available

for the HP 41800A. Three 12 mil pins and three 30 mil pins are furnished with the HP 41800A as spare probe pin set. The HP 41800A is shipped from the factory with a 30 mil pin installed.

The 30 mil probe pin must be used, when using with the HP 10218A probe-BNC(m) adapter, the 10:1 / 100:1 dividers, the slip-on spanner ground tip, the hook tip adapter or the HP 11880A probe-N(m) adapter. To replace the probe pin, refer

to page 3-22, PROBE PIN REPLACEMENT.

374

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

OPERATING

PRECAUTIONS This paragraph describes precautions for using the HP 41800A to

prevent from damage on the HP 41800A and your Device Under

Test (DUT).

Anti-static Precautions

The HP 41800A is sensitive to electrostatic discharge (ESD). The

followings must be adhered to when using the HP 41800A.

• Do NOT touch the probe pin: The probe input circuit is highly susceptible to damage by ESD introduced through the probe pin.

• Eliminate ESD on your body:

Wear a snug-fitting ground strap that is connected to earth ground through a 1 MS resistor. Refer to Table 3-

1 which lists the available anti-static products.

• Eliminate ESD on the work surface:

A grounded anti-static bench mat is recommended. Optional floor mats provide an extra measure of protec-

tion, especially in areas with floor carpet. Do NOT use the HP 41800A on a carpeted work surface.

• Hold the probe by the protective sleeve:

Always hold the probe by the retracted ground protective sleeve to eliminate residual ESD on your body.

• Do NOT introduce ESD into the DUT while the probe is in

use:

If an unprotected person touches a part of the DUT, a static surge could damage the DUT as well as the probe.

Tabl e 3-1. Anti-static Products Available

Description Part Number

Liquid Anti-static Agent (1 Qt. Spray) Static Control Table Mat (2'x 4')

with 15-foot Ground Cord Small Wrist Strap with 7-foot Ground Cord Medium Wrist Strap with 7-foot Ground Cord

Large Wrist Strap with 7-foot Ground Cord

PN 8500-3397

PN 9300-0797 PN 9300-1099

PN 9300-1117 PN 9300-1242

3-5

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

Maximum Allowable Level Maximum allowable level (ac+dc) to the probe is ±50V (±200V

when used with a divider).

Discharging

The Probe

Measuring a node having a DC voltage potential charges the blocking capacitors inside the HP 41800A probe. Ground the probe pin after measuring such nodes to discharge probe capaci-

tor. Failure to do this could result in damage to sensitive circuits

in the DUT, especially if it is an active device.

3-6

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

PREPARATION

FOR USE This paragraph provides the HP 41800A operating check pro-

cedure and the 10:1 / 100:1 divider adjustment procedure.

The HP 41800A operating check procedure checks the probe gain

using the network/spectrum analyzer (HP 4195A), a network analyzer, or a spectrum analyzer. These operating check pro-

cedures are only intended to ensure that the HP 41800A is func- tional. If the HP 41800A fails this check, it should be repaired. To verify that the HP 41800A meets its specifications, perform the PERFORMANCE TEST described in SECTION 4.

The 10:1 /100:1 divider adjustments should be performed to minimize the frequency response error due to the 10:1/100:1 dividers (furnished with the HP 41800A). Performing these adjust- ments are recommended before using the 10:1 and 100:1 dividers.

3-7

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

Operating Check Using The HP 4195A

Figure 3-3 shows the operating check setup using the HP 4195A

network/spectrum analyzer.

HP 4195A

00 0000 ..,

0 00 0

I=10 0000 0

O 0

0 0 0 0 0 0 0 0

. .

...1=3

0 0

R1 . i ®

00 0

0 C00

000 000

0 0 0

0 00 00

01313130

® o ® ®

0000 0000

0000

N(m)-BNC(f) Adapter

HP 10218A

41800A

Figure 3-3. Operating Check Setup Using The HP 4195A

[Equipment]

• Network/Spectrum Analyzer

• Probe-BNC(m) Adapter Adapters

•

HP 4195A

HP 10218A

as necessary

3-8

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

[Procedure]

1. Connect the equipment as shown in Figure 3-3.

2. Set up the HP 4195A as follows.

CONFIG : SPECTRUM PORT SELECT : SOURCE CH1 on CENTER : 50 MHz SPAN : 0 Hz

AMPLITUDE (S1) : -26 dBm

REF ATTEN (R1) : 10 dB

3. Confirm that the signal level is -20 dBm ± 5 dB.

NOTE

The HP 11880A probe-N(m) adapter can be used instead of the N(m)-BNC(f) adapter and the HP 10218A probe-BNC(m) adapter. The signal level should be -26 dBm ± 5 dB when the HP 11880A probe-N(m) adapter is used.

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

Operating Check Using Network Analyzer Figure 3-4 shows the operating check setup using a network

analyzer. To check the probe gain, absolute power amplitude measurement mode should be selected.

HP 3577A

I J00 DODO

00 00

OUTPUT

Connector

N(m)-BNC(f) Adapter

0 000E1

0000

0000 • 0 0000 ' 0000n 0000K--.2

41800A

HP 10218A

00000000

Figure 3-4. Operating Check Setup Using Network Analyzer

[Equipment]

• Network Analyzer Any Compatible

• Probe-BNC(m) Adapter HP 10218A

• Adapters as necessary

[Procedure]

1. Connect the equipment as shown in Figure 3-4.

2. Set the network analyzer as follows.

Measurement Mode : R, A, or B (absolute ampli-

tude measurement) Center Frequency : 50 MHz Span : 0 Hz Output Level : -10 dBm

3. Confirm that the signal level is -4 dBm ± 5 dB.

NOTE

The HP 11880A probe-N(m) adapter can be used instead of the N(m)-BNC(f) adapter and the HP 10218A probe-BNC(m)

adapter. The signal level should be -10 dBm ± 5 dB when

the HP 11880A probe-N(m) adapter is used.

3-10

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

Operating Check

Using Spectrum

Analyzer

Figure 3-5 shows the operating check setup using a spectrum analyzer.

HP 8568B

00 0 0 0 00 00 0

00 0 00 0

❑ O

000

0 0

p=0E,

ODD

o 000O

CAL OUTPUT

Connector

10218A

0ci50 0000

0 00 00000000

00 0 0000

HP 41800A

Figure 3-5. Operating Check Setup Using Spectrum Analyzer

[Equipment]

Spectrum Analyzer

•

• Probe-BNC(m) Adapter

• Adapters

Any Compatible

HP 10218A

as necessary

[Procedure]

1. Connect the equipment as shown in Figure 3-5.

NOTE

If the spectrum analyzer has a tracking generator output, use the tracking generator output connector instead of the

calibration output connector. Then set the output level to

<-10 dBm.

2. Setup the spectrum analyzer as follows.

Center Frequency : same as Calibration Output

frequency Span : 0 Hz Attenuation : 40 dB

3. Confirm that the signal level is (calibration output level +

6 dB) ± 5 dB.

3-11

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

10:1 / 100:1 Divider Adjustments This adjustment procedure is used to adjust the 10:1 / 100:1

divider's gain. This adjustment requires the HP 4195A, any com- patible Network Analyzer, or any compatible Spectrum Analyzer.

Source output

Calibration output

Probe power

Input

N(m)-BNC(f) Adapter

HP 10100C

HP 10218A

Figure 3-6. Divider Adjustment Setup

[Equipment]

• Network or Spectrum Analyzer

• Probe-BNC(m) Adapter HP 10218A

• 50 c Feedthrough Termination

• Adapters

• Alignment Tool ( - ; minus)

HP 41800A

\_/

Any Compatible

HP 10100C as necessary as necessary

[Procedure]

1. If you use the HP 4195A: Set CONFIG to SPECTRUM. Set SOURCE CH1 on. Set CENTER to 50 MHz, SPAN to 0 Hz. Connect the adapter, feedthrough and probe adapter to the S1 connector.

If you use the Network Analyzer:

Select the absolute power amplitude measurement mode

(R, A or B). Set CENTER to 50 MHz, SPAN to 0 Hz. Connect the adapter, feedthrough and probe adapter to the source output connector.

If you use the Spectrum Analyzer:

Set CENTER to the calibration output frequency. Set SPAN to 0 Hz. Connect the feedthrough and probe adapter to the calibra-

tion output connector.

3-12

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

NOTE

If the spectrum analyzer has the tracking generator output, use the tracking generator output connector instead of the calibration output connector.

2. Connect the HP 41800A's OUTPUT connector to the instru-

ment's Input connector.

3. Insert the HP 41800A's probe tip into the probe adapter.

4. Note the measured value, and remember it as data R. Data R

is used in steps 7 and 9.

Data R = dBm

5. Disconnect the HP 41800A from the probe adapter.

« 10:1 Divider Adjustment »

6. Connect the 10:1 divider to the HP 41800A's probe tip, and insert it into the probe adapter on the instrument's input connector.

7. Adjust the trimmer component from the opening of the di-

vider, shown in Figure 3-7, so that the data measured by the

instrument is approximately 20 dB less than data R.

« 100:1 Divider Adjustment »

8. Connect the 100:1 divider to the HP 41800A's probe tip, and

insert it into the probe adapter on the instrument's input connector.

9. Adjust the trimmer component on 100:1 divider so that the data measured by the instrument is approximately 40 dB less

than data R.

Figure 3-7. 10:1 / 100:1 Divider Adjustment Component Location

3-13

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

TYPICAL MEASUREMENT

SETUPS This paragraph provides typical measurement setups using the

HP 41800A. The following setups are described.

• Network Measurement Setups

• Using one HP 41800A

• Using one HP 41800A with a transmission/reflection test set

• Using two HP 41800A

• Spectrum Measurement Setups

• Using the HP 41800A with an instrument which has a type-N input connector

• Using the HP 41800A with an instrument which has a BNC input connector

CAUTION

Electrostatic Discharge (ESD) can damage the HP 41800A's highly sensitive input amplifier. Never touch the probe pin!

Do not apply a ac+dc level which exceeds ±50V (±200V when using a divider) to the probe.

Do not mate the output connector of the probe assembly (5052 type-N connector) to 7552 type-N connectors or damage may result.

NOTE

The 30 mil probe pin must be used to adapt to the

HP 10218A probe-BNC(m) adapter, the 10:1 / 100:1 dividers,

the slip-on spanner ground tip, the hook tip adapter, or the

HP 11880A probe-N(m) adapter.

3-14

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

Network Measurenients

[Using one HP 41800A]

Figure 3-8 shows a typical measurement setup for the network measurements. Place the probe tip as close to the input of the device under test, and perform a normalize (through) calibration to compensate the frequency response error.

HP 4195A

0 0

O O

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0000

O O

0000 0000

0 0

0 0 O

00 000

0 0 0

0 0 0 0 0

0 0

Power

Splitter

1-1

41800A

* Terminate the DUT with

a load if necessary.

DUT LOAD*

Figure 3-8. Network Measurement Setup Example

(Using One HP 41800A)

3-15

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

[Using one HP 41800A with a transmission/reflection test set]

Figure 3-9 shows typical measurement setup for the network measurements using with a transmission/reflection test set. Place

the probe tip as close to the input of the device under test, and

perform a normalize (through) calibration to compensate the

frequency response error.

HP 4195A

I •••=

0 0

• • 0

Transmission/

Reflection

Set

0 o 0 0 0 0 0 0000

0 0 0

• . . 0

00 0000

00 0

0 0 0

0000 000

0 0

000

O 0

OD 0

0 0 0

0000

0 0 0

0000 0000 0000

. .

HP 41800A

* Terminate the DUT with

a load if necessary.

DUT

LOAD*

Figure 3-9. Network Measurement Setup Example

(Using With A Transmission/Reflection Test Set)

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

[Using two HP 41800As]

Figure 3-10 shows typical measurement setup for the network

measurements using two probes. Place the probe tip as close to the input of the device under test, and perform a normalize (through) calibration to compensate the frequency response error.

HP 4195A

.== i

0 0

. .

0 0

0 0 0

. .

•

Do oo co

1=1 o

0O0000 000

•

41800A

000

DO 0

000

0000

0 0 0 0 0

0 0 0

•

0 0

0000 0000 0000

0000

. .

* Terminate the DUT with

a load if necessary.

DUT LOAD*

Figure 3-10. Network Measurement Setup Example

(Using Two HP 41800As)

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

Spectrum Measurements

[Using HP 41800A with instruments which have type-N connectors]

Figure 3-11 shows typical measurement setup using a spectrum analyzer which has a type-N input connector.

HP 4195A

0 0

HP 41800A

00 00

00 0 00 0 L-J

r_.,

000 El

0 0 0 0 0

0 o o

O o

0 0 0 0 0

000 0

•

DUT

Figure 3-11. Spectrum Measurement Setup Example

(Type-N Input Connector)

3-18

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

[Using HP 41800A with instruments which have BNC connectors]

Figure 3-12 shows typical measurement setup using a spectrum

analyzer which has a BNC input connector. A BNC(m) cable and

N(f)-BNC(f) adapter are recommended to use for connecting the HP 41800A to the spectrum analyzer. Do not use an unflexible

adapter such as a BNC(m)-N(f) adapter instead of the cable and

N(f)-BNC(f) adapter, otherwise the overweight caused by the HP 41800A may damage the spectrum analyzer's connector.

HP 3585A/B

000

000 000

of JO 0000 o(000000

OB @ 0 C) 0 0 0 0

I I

000

0( )000000 DL JO 0000

o 0000 0 0000

00 00

0 0

000

F50.,.C/ BNC (m) Cable

Er--BNC (f)-N (f) Adapter

HP 41800A

DUT

Figure 3-12. Spectrum Measurement Setup Example

(BNC Input Connector)

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

PROBE PIN

REPLACEMENT This paragraph describes how to replace the probe pin.

CAUTION I

Electrostatic Discharge (ESD) can damage the HP 41800A's highly sensitive input amplifier. Wear a snug-fitting ground strap to touch the probe pin. Do not touch the probe pin directly.

NOTE

The 30 mil probe pin must be used to adapt to the

HP 10218A probe-BNC(m) adapter, the 10:1 / 100:1 dividers,

the slip-on spanner ground tip, the hook tip adapter, or

HP 11880A probe-N(m) adapter.

1. Unscrew the probe pin slowly using the probe tip nut driver (HP PN 8710-1806 ; furnished with the HP 41800A).

2. Screw in the new pin with the driver.

NOTE

A spare probe pin set (HP PN 41800-60021), includes

12 mil pins (3 ea.) and 30 mil pins (3 ea.), is available from

your nearest Hewlett-Packard office.

3-20

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

SECTION 4

PERFORMANCE TESTS

INTRODUCTION This section provides performance test procedures to ensure that

the HP 41800A meets the specifications listed in Table 1-3, Speci-

fications. The performance test can be performed without ac- cessing the interior of the HP 41800A.

The test results should be recorded into the Performance Test Record which is located at the end of this section.

EQUIPMENT REQUIRED

The equipment required for performance testing is listed in Table 4-1. Substitutions can be made if the substitution equipment meets or exceeds the specifications listed in the Requirements column.

Tabl e 4-1. Recommended Test Equipment

Equipment

Recommended Model

Network Analyzer 1 HP 4195A

Power Meter 1 HP 436A or 438A

Power Sensor HP 8482A

Power Splitter 1 HP 11667A

Probe Adapter HP 11880A

Cable 2 N(m)-N(m), 50 n, 61 cm HP 11500B

Adapter

GUY*

No substitute

Accuracy: <0.1 dB Frequency: 500 MHz

1 No substitute

1 N(f)-N(f), 50 fl 1

Frequency: 500 MHz Compatible with the HP 436A or 438A

Frequency Range: 5 Hz to 500 MHz

N(m)-N(m), 50 CI

Requirements

Use

P, A , T

P, A

P, A , T

P, A

P, A P, A

Active Probe

HP 41800A

Note: P, A, and T mean the Performance Test, Adjustment, and

Troubleshooting, respectively.

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

Frequency: 50 MHz

4-1

CALIBRATION CYCLE

The HP 41800A requires periodic performance verification. The

HP 41800A should be checked out using the performance test at least once a year or more depending on its frequency of use.

Preventive maintenance should be performed at least twice a year to keep down-time to a minimum, and to insure optimum operation.

PREPARATION This paragraph provides the information which you should know

and the steps that you should perform before starting the perfor- mance test.

1. The test equipment must be allowed to warm-up and stabilize

for at least 30 minutes.

2. A HP 4195A is required to test the HP 41800A. In the remainder of this manual, softkeys are indicated in boldface type and enclosed in single quotes (e.g., 'NETWORK' softkey), and keys are indicated in boldface type only (e.g. PRESET key).

4-2

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

PERFORMANCE TESTS

PROBE GAIN/FREQUENCY RESPONSE TESTS

DESCRIPTION:

The Probe Gain/Frequency Response Test checks the probe gain at 50 MHz, and the frequency response relative to 50 MHz.

SPECIFICATIONS: (at 23 °C ±5 °C)

PROBE GAIN: 0 dB ±0.5 dB at 50 MHz

FREQUENCY RESPONSE: (relative to 50 MHz)

SETUP:

HP 4195A

0 0 0

• •

N(m)-N(m) Adapte r

CABLE 1 (N(m)-N(m) Cable)

9. ° 9

0 0

( 1 )

+1 dB/-2 dB at <50 Hz

±1 dB at 50 Hz to 200 MHz

+1.5 dB/-2 dB at >200 MHz

01::10 000 1"

0 00 OD

0000 000 0 0000

000 0000

0 0 0

i0 0 ®

N(m)-N(m) Adapte r

HP 4195A

0 —= 0 0

0 0 0

0 0

• .

•

116 67A --,.

118 80A -4 '(9

00 oo oo ::

00 00

0 0

000

0 0

000

0,,

000

0 00 0 0

0 0 0

,_, 0000 U 0000

ror

0000

o ° (3 i

CABLE 1 (1‘1(rra-N(4 Cable)

N(m)-N(m) Cable

NM-N(f) Adapte r

EQUIPMENT:

Network Analyzer Power Splitter Probe to N(m) Adapter N(m)-N(m) Cable N(f)-N(f) Adapter N(m)-N(m) Adapter

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

HP 41800A

( 2 )

Figure 4-1. Probe Gain/Frequency Response Test Setup

HP 4195A HP 11667A HP 11880A HP 11500B PN 1250-0777 PN 1250-0778

4-3

PERFORMANCE TESTS

PROCEDURE:

1. Connect the power splitter to the HP 4195A as shown in Figure 4-1 (1).

2. Sequentially press the following HP 4195A front panel keys, to set the HP 4195A to the Probe Gain/Frequency Response test settings.

CONFIG, 'NETWORK', PRESET

AMPLITUDE (CHANNEL 1 side), - , 1 , 4 , ENTER/EXECUTE

REF ATTEN (CHANNEL 1 side), 0 , ENTER/EXECUTE

TEST ATTEN (CHANNEL 1 side), 0 , ENTER/EXECUTE

START, 1 , 0 , Hz/dBuV

STOP, 5 , 0 , 0 , MHz/V

MENU, 'TRIGGER menu', 'SINGLE mode', 'return'

`RESOLUTN menu', 'No. of POINTS', 1 , 0 , 1 , ENTER/EXECUTE

`return', 'TYPE lin log' ("log" in the 'TYPE lin log' softkey will change to

intensified green.)

DISPLAY, 'TRACE B on off' ("off" in the 'TRACE B on off' softkey will change

to intensified green.)

AUTO (The yellow LED in the AUTO key will turn on.)

• 4-4

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

PERFORMANCE TESTS

3. Sequentially press the following HP 4195A front panel keys to set the HP 4195A's programmed points table, and to activate its program sweep measurement capability.

MENU, 'PROGRAM sweep', `PROG TBL set up'

(Confirm that the displayed table is empty. If the table is not empty, press the 'TA- BLE No.' softkey repeatedly until an empty table is displayed, or press the 'TABLE ALL CLR' softkey and ENTER/EXECUTE key.)

(Confirm that the table sweep parameter is frequency. If it is not frequency, press the `SWP select' softkey repeatedly until it changes to frequency.)

`X REG dump'

(move the cursor to the N = 96 position by pressing the down arrow key)

CLR LINE, 2 , 0 , 0 , MHz/V, ENTER/EXECUTE

(move the cursor to the N = 88 position)

CLR LINE, 5 , 0 , MHz/V, ENTER/EXECUTE

(move the cursor to the N = 10 position)

CLR LINE, 5 , 0 , Hz/dBLIV, ENTER/EXECUTE, 'set end',

`PROG SWP on off' ("on" in this softkey will change to intensified

green.)

4. Sequentially press the following HP 4195A front panel keys to perform a normalize (thorough) calibration, and wait until the message "Cal completed" is displayed.

CAL, 'TRANS CAL menu', 'NORMLIZE (THRU)', `THRU', ENTER/EXECUTE

5. Press the HP 4195A's CAL key and the `CORRECTN on off' softkey to activate the

HP 4195A's correction capability. The "on" in this softkey will change to intensified

green.

6. Disconnect CABLE 1 (see Figure 4-1 (1)) from the power splitter, and connect the HP 41800A between the power splitter and CABLE 1 as shown in Figure 4-1 (2).

«PROBE GAIN TEST»

7. Press the HP 4195A's TRIG/RESET key to make a single sweep measurement.

8. Press the SCALE REF key and the 'A AUTO SCALE' softkey for auto scaling.

9. Move the o marker on the HP 4195A's display to the 50 MHz sweep point by rotating

the rotary knob on the HP 4195A's front panel.

4-5

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

PERFORMANCE TESTS

10. Confirm that the T/R data displayed in the upper right corner of the HP 4195A's display is 0 dB ± 0.5 dB.

«FREQUENCY RESPONSE»

11. Enter the HP 4195A "A=A-A(88)" command using the following key stroke sequence to have the HP 4195A display the frequency response test results.

CLR LINE, blue shiftkey, A, = , A, - , A, MATH OPERATOR,

( ' , 8 , 8 , ) ' , ENTER/EXECUTE

12. Sequentially press the following keys to set the HP 4195A's analysis range.

MORE, 'ANA RNG'

(move the marker to the 50 Hz point)

`active oMKR *MKR' ("oMKR" in this softkey will change to intensified

green)

(move the o marker to the 10 Hz point)

`STORE ANA RNG'

`PART ANA on off' ("on" in this softkey will change to intensified

green)

13. Press the MKR-* key and the `MKR-MAX' softkey to move the o marker to the maxi- mum point between 10 Hz and 50 Hz. And confirm that the T/R data displayed on the upper right corner of the HP 4195A's display is within +1 dB/-2 dB.

14. Press the `MKR->MIN' softkey to move the o marker to the minimum point between 10 Hz and 50 Hz. And confirm that the T/R data displayed in the upper right corner of the HP 4195A's display is within +1 dB/-2 dB.

15. Sequentially press the following keys to change the HP 4195A's analysis range.

MORE, 'ANA RNG'

(move the o marker to the 200 MHz point)

`STORE ANA RNG'

16. Press the MKR- key and the `MKR->MAX' softkey to move the o marker to the maxi- mum point between 50 Hz and 200 MHz, and confirm that the T/R data is within

±1 dB.

17. Press the `MKR->MIN' softkey to move the o marker to the minimum point between 50 Hz and 200 MHz, and confirm that the data T/R is within ±1 dB.

4-6

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

PERFORMANCE TESTS

18. Sequentially press the following keys to change the HP 4195A's analysis range.

MORE, 'ANA RNG'

(move the o marker to the 200 MHz point)

`active oMKR *MKR' ("*MKR" in this softkey will change to intensified

green)

(move the marker to the 500 MHz point)

`STORE ANA RNG'

19. Press the MKR- key and the `MKR->MAX' softkey to move the marker to the maxi-

mum point between 200 MHz and 500 MHz, and confirm that the data T/R is within +1.5 dB/-2 dB.

20. Press the `MKR->MIN' softkey to move the marker to the minimum point between

200 MHz and 500 MHz, and confirm that the T/R data is within +1.5 dB/-2 dB.

4-7

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

PERFORMANCE TESTS

1 dB GAIN COMPRESSION TEST

DESCRIPTION:

The 1 dB Gain Compression Test checks the gain compression of the probe amplifier.

SPECIFICATIONS: (at 23 °C ±5 °C)

> +3 dBm at 500 MHz

SETUP:

HP 436A

EQUIPMENT:

HP 4195A

. . 6

1.......a

tarri-N(rn) Ad apte r „Ar

116 6 7 A N....

8482A

0 0 0

Q°

„....k_

( : ?.' 6

,--N(m)-N(m) Cable

0 0

6°

6 6

HP 436A

Nirri-N(m) Adapter

Figure 4-2. 1 dB Gain Compression Test Setup

HP 4195A

00 0 0 0

... i PP i

116 6 7 A —a.-

8482A

118 80A

(2)

CO 00

00 DC

CO O

❑ ❑

00 0 00 0

0 0 0

0 0 0 0 0

0 0

0 0 0

i °o i

ni-N(rn) Cable

4=1.--"N01-Nlt Adapter

HP 41800A

❑

St2E NEC

0000

Spectrum Analyzer Power Meter Power Sensor Power Splitter Probe to N(m) Adapter N(m)-N(m) Cable N(f)-N(f) Adapter N(m)-N(m) Adapter

PROCEDURE:

1. Connect the power sensor to the power meter.

2. Calibrate the power meter for the power sensor.

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

HP 4195A HP 436A H P 8482A HP 11667A HP 11880A HP 11500B PN 1250-0777 PN 1250-0778

4-8

PERFORMANCE TESTS

3. Set the power meter to the dBm mode, and set the CAL FACTOR % knob to the value required by the power sensor at 500 MHz, and zero the meter.

4. Connect the power splitter to the HP 4195A, and connect the power sensor to the power splitter as shown in Figure 4-2 (1).

5. Sequentially press the following HP 4195A front panel keys to set the HP 4195A to

the 1 dB Gain Compression test setting.

CONFIG, 'SPECTRUM', PRESET

MENU, 'PRMTR menu', 'OSC LVL IdBm]', 'SPOT FRED', 5 , 0 , 0 , MHz/V

`return', 'TRIGGER menu', 'SINGLE mode'

START, - , 1 , 1 , ENTER/EXECUTE

STOP, 1 , 5 , ENTER/EXECUTE

RES BW, 1 , kHz/dBm

REF ATTEN (CHANNEL 1 side), 4 , 0 , ENTER/EXECUTE

CONFIG, 'PORT SELECT', 'SOURCE CH1'

6. Press the HP 4195A's TRIG/RESET key to make a single sweep measurement.

7. Enter the HP 4195A "C=A" command using the following key sequence.

CLR LINE, blue shiftkey, C, = , A, ENTER/EXECUTE

8. Disconnect N(m)-N(m) Cable from the power splitter, and connect the HP 41800A

between the power splitter and N(m)-N(m) Cable, as shown in Figure 4-2 (2).

9. Press the HP 4195A's TRIG/RESET key to make a single sweep measurement.

10. Enter the HP 4195A "A=A-C" command using the following key sequence.

CLR LINE, blue shiftkey, A, = , A, - , C, ENTER/EXECUTE

11. Enter the HP 4195A "A=A-A(1)" command using the following key sequence.

CLR LINE, blue shiftkey, A, = , A, - , A, MATH OPERATOR,

( ' , 1 , ) ' , ENTER/EXECUTE

12. Press the SCALE REF key and the 'A AUTO SCALE' softkey for auto scaling.

13. Move the o marker to the point at which the MAG (data A) displayed in the upper

right corner of the HP 4195A's display indicates approximately -1 dBm.

14. Sequentially press the HP 4195A's MENU key, and the 'TRIGGER menu' and 'MAN- UAL mode' softkeys.

15. Conform that the power meter reading is greater than 3 dBm.

4-9

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

NOTES

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

PERFORMANCE TEST RECORD

Hewlett-Packard Model 41800A

Active Probe

PROBE GAIN (at 50 MHz):

Specification

0 dB -±0.5 dB

FREQUENCY RESPONSE (relative to 50 MHz):

Specification

Max. at 10 Hz<f<50 Hz: Min. at 10 Hz<f<50 Hz:

Max. at 50 Hz<f<200 MHz: Min. at 10 Hz<f<200 MHz:

+1 dB/-2 dB +1 dB/-2 dB

±1 dB ±1 dB

Tested by

Date

Serial No.

Te mp erature

Humidity

Actual

dB dB

Max. at f>200 MHz: Min. at f>200 MHz:

dB GAIN COMPRESSION:

+1.5 dB/-2 dB +1.5 dB/-2 dB

Specification Actual

>3 dBm dBm

dB dB

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

NOTES

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

SECTION 5

ADJUSTMENT

INTRODUCTION This section describes the adjustments required to return the

HP 41800A to the specifications listed in Table 1-3, Specifications, if the HP 41800A failed the performance test, or after it has been repaired. If proper performance cannot be achieved after these adjustments, refer to Section 6, Service.

EQUIPMENT REQUIRED

Ta bl e 4-1 lists the equipment required for adjustment.

PREPARATION This paragraph provides the information which you should know,

and the procedures that you must perform before starting the adjustments.

1. The test equipment must be allowed to warm-up and stabilize for at least 30 minutes.

2. A HP 4195A is required to test the HP 41800A. The HP 4195A's front panel keys and softkeys are indicated as in

the following example in this manual.

ex)

PRESET key PRESET NETWORK softkey 'NETWORK'

5-1

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

ADJUSTMENT

LF GAIN/FLATNESS ADJUSTMENT

DESCRIPTION:

The LF Gain/Flatness Adjustment adjusts the HP 41800A gain and frequency response.

SETUP:

0 0

N(H—N(rn) Adapte r

116 67A -0.

HP 4195A

0000 0000

0 0

c) c) c)

CABLE 1 (N(rn)—N(m) Cable)

. .

( 1 )

Figure 5-1. LF Gain/Flatness Adjustment Setup

00000000

00OO

DOD r,

000 L--1

000 0

0 0 0 0 0

N(m)—N(m) Cable

0000

0 0 0

. .

® 0 ®

HP 4195A

00 00

OOO

0 0

4 ?4

N(m)—N(m) Adapte r

116 67A

118 80A —," ,9

O O O

00 0

00 0 000

0000

.--CABLE 1 (NI(rrJ—Wrt) Cable)

N(m/—N(m/ Cable

,.„,,,,N5)—N(f) Adapte r

HP 41800A

222,2 0000

0000

0 0

0®

❑

( 2 )

EQUIPMENT:

Network Analyzer Power Splitter

Probe to N(m) Adapter N(m)-N(m) Cable N(f)-N(f) Adapter

N(m)-N(m) Adapter

HP 4195A HP 11667A

HP 11880A HP 11500B PN 1250-0777 PN 1250-0778

5-2

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

ADJUSTMENT

PROCEDURE:

1. Connect the power splitter to the HP 4195A as shown in Figure 5-1 (1).

2. Sequentially press the following HP 4195A front panel keys to set the HP 4195A to the adjustment settings.

CONFIG, 'NETWORK', PRESET

AMPLITUDE (CHANNEL 1 side), - , 1 , 4 , ENTER/EXECUTE

REF ATTEN (CHANNEL 1 side), 0 , ENTER/EXECUTE

TEST ATTEN (CHANNEL 1 side), 0 , ENTER/EXECUTE

START, 1 , 0 , Hz/dB4V

STOP, 5 , 0 , MHz/V

MENU, 'TRIGGER menu', 'SINGLE mode', 'return'

'RESOLUTN menu', 'No. of POINTS', 2 , 1 , ENTER/EXECUTE

`return', 'TYPE lin log' ("log" in the 'TYPE lin log' softkey will change to

intensified green.)

DISPLAY, 'TRACE B on off' ("off" in the 'TRACE B on off' softkey will change

to intensified green.)

AUTO (The yellow LED in the AUTO key will turn ON.)

3. Sequentially press the following keys to perform a normalize (thorough) calibration, and wait until the message "Cal completed" is displayed.

CAL, 'TRANS CAL menu', `NORMLIZE (THRU)', `THRU', ENTER/EXECUTE

4. Press the CAL key and 'CORRECTN on off' softkey to activate the HP 4195A's cor- rection capability. "on" in this softkey will change to intensified green.

5. Disconnect CABLE 1 (see Figure 5-1 (1)) from the power splitter, and connect the HP 41800A between the power splitter and CABLE 1 as shown in Figure 5-1 (2).

6. Press the HP 4195A's TRIG/RESET key to make a single sweep measurement.

7. Enter the "REF=A(21)+0.5" command and "DIV=0.1" command to set the scale of the HP 4195A's display, using the following key sequence.

SCALE REF, 'A REF LEVEL', blue shiftkey, A, MATH OPERATOR,

( ' , 2 , 1 , ) ' , + ' , 0 , . , 5 , ENTER/EXECUTE

SCALE REF, 'A /DIV', 0 , . , 1 , ENTER/EXECUTE

5-3

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

ADJUSTMENT

8. Press the TRIG/RESET key, and the 'CONT mode' softkey to select the continuous

sweep mode.

9. Adjust R18 (LF GAIN) and R25 (FLATNESS) so that the T/R data displayed by the HP 4195A is within ± 0.5 dB for the data at 50 MHz, as shown in Figure 5-3.

R18 (LF GAIN)

R25 (FLATNESS)

Figure 5-2. Adjustment Component Locations

NETWORK Cor A:REF B:REF

500.0m 180.0

[DB ][ deg

li 3 6 3i 6 6

DIV DIV START 10.000 Hz

100.0m 36.00 STOP 50 000 000.000 Hz

RBW: 3 Hz ST:9.57 sec RANGE:R=-10,T=-10dBm

Figure 5-3. Adjustment Example

—7=

0.5dB

5-4

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

SECTION 6

SERVICE

INTRODUCTION This section contains the replaceable parts information, disassem-

bly procedures, and troubleshooting and repair information.

REPLACEABLE PARTS

The HP 41800A's replaceable parts are listed in Table 6-1, Re-

placeable Parts. Table 6-1 gives the Hewlett-Packard part num- ber, quantity (Qty.), and description.

To order a part listed in Table 6-1, indicate the Hewlett-Packard

part number and the quantity desired. Address your order to the nearest Hewlett-Packard office.

6-1

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

Table 6-1. Replaceable Parts (1 of 3)

Ern

0 0 0 0

0 0

Reference

Designator

1 41800-61601 2 41800-40005 3 4 5

6 7 8

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

Part Number

41800-24012 41800-24010 0510-1325 0905-1150 41800-60005 41800-60002 41800-60003 41800-60004

Qty. Description

Cable Assembly

Support Shield

Protective Sleeve

Outer Tube Probe

Retainer CE Ring

O Ring

1 1 1 1

PC Board/Heatsink Assembly Nose Assembly 12 mil Probe Pin Assembly

30 mil Probe Pin Assembly

6-2

Ta bl e 6-1. Replaceable Parts (2 of 3)

Reference

Designator

1 41800-87111 1 2 3 41800-04001 4 0515-0976 5 6 7 8 9 0515-0914 2 Screw-Mach M3x0.5

10 1250-2229 11 41800-20001 1 12 41800-23003 2 Shaft 13 0515-0976 Screw M2 L6 14 2190-0654 Washer 15 16 6960-0147 2 Plug Hole

Part Number

0515-1873

2190-0654 41800-66502 1401-0214 41800-87112 Label

41800-24004 1 Spacer

Qty. Description

Label

5 5

Screw Metric

Cover

Screw M2 L6 Washer Amplifier/Regulator Board Assembly

1 PVC Cap

1 Connector N-PR-237

Case

6-3

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

Table 6-1. Replaceable Parts (3 of 3)

Reference

Designator

1 2 3 4 41800-60012

7 8

9 41800-60021

1 A gil ent internal-only part number.

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

Part Number Qty.

41800-610011 10218A 41800-60011

5060-0549 01123-61302 8710-1806 10229A

Description

Probe Assembly Probe-BNC(m) Adapter

1 1

1 1 1 1

10:1 Divider Assembly 100:1 Divider Assembly Slip-on Spanner Ground Tip Ground Clip (flexible) Probe Tip Nut Driver (3/32 inch) Hook Tip Adapter Spare Probe Pin Set (12 mil pinx3, 30 mil pinx3)

6-4

DISASSEMBLY

Amplifier/Regulator Board Assembly Removal:

This paragraph describes the procedures for removing the Am- plifier/Regulator Board Assembly (PN 41800-66502), and the PC

Board/Heatsink Assembly (PN 41800-60005).

Removing the Amplifier/Regulator Board Assembly requires removing the labels on the HP 41800A. The labels will be damaged when you remove them. Use new labels after reassem- bling the HP 41800A (you must order the labels).

1. Remove LABEL 1 from the COVER, and remove LABEL 2 from the N(m) Connector.

LABEL 1

COVER

LABEL 2

N(m) Connector

Figure 6-1. Label/Cover Removal

2. Remove the four screws holding the COVER and remove the COVER.

3. Remove the two screws holding the N(m) connector.

6-5

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

4. Remove the two SHAFTs and the screw as shown in Figure 6-2.

N(m)Connector

Amplifier/Regulator Board Case

SHAFT

Figure 6-2. Amplifier/Regulator Board Disassembly

5. Disconnect the coaxial cable (item 1 in Figure 6-2) from the SMB connector on the Amplifier/Regulator Board assembly.

Screw Cable Assembly

—0. A

SMB Cable

Lead (Black)

Lead (White)

4. Lead (Brown)

5. Lead (Blue)

Lead (Red)

Lead (Green)

Lead (Yellow)

9. N(m) Connector

6. Remove the leads, item 2 through 8 on Figure 6-2, from the Am- plifier/Regulator Board assembly.

7. Draw the coaxial cable and leads, a part of cable assembly PN 41800-61601, from the CASE toward the arrow A as shown in Figure 6-2.

8. Remove the solder at point 9 as shown in Figure 6-2.

9. Remove the N(m) connector from the CASE toward the arrow B shown Figure 6-2, while holding the soldering iron at point 9 as shown in Figure 6-2.

10. Remove the four screws holding the Amplifier/Regulator Board assembly in place.

11. Remove the Amplifier/Regulator Board assembly from the CASE.

6-6

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

PC Board/Heatsink Assembly Disassembly:

1. Remove the cable strain relief BOOT using the following procedure.

a. Hold the probe by hand at position A as shown in Figure 6-3.

b. Remove the BOOT by rotating it in the direction of arrow B as

shown in Figure 6-3.

c. Slide the BOOT in the direction of arrow C as shown in Figure 6-

BOOT

0000

Figure 6-3. Boot Removal

2. Slide the SLEEVE in the direction of arrow A as shown in Figure 6-4.

z A

BOOT i SLEEVE

0 0 0 0

Figure 6-4. Sleeve Removal

3. Pull out the CE RING in the direction of arrow A as shown in Figure 6-5.

CE RING

SLEEVE

Figure 6-5. CE Ring Removal

6-7

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

4. Remove the probe NOSE piece using the following procedure.

a. Use a wrench to hold the NOSE piece at position A as shown in

Figure 6-6.

b. Remove the NOSE piece by rotating it in the direction of arrow B

as shown in Figure 6-6.

c. Remove the NOSE piece.

TUBE

/ A

Bab

SLEEVE

Figure 6-6. NOSE Removal

5. Remove the TUBE using the following procedure.

a. Hold the probe with a wrench at position A as shown in Figure 6-

b. Remove the TUBE by rotating it in the direction of arrow B as

shown in Figure 6-7.

c. Slide the TUBE in the direction of arrow C as shown in Figure 6-7.

TUBE

SLEEVE

Figure 6-7. Tube Removal

1311>

NOSE

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

TUBE

6. Slide the 0 RING in direction A as shown in Figure 6-8.

0 RING PC Board/Heat sink

1: black 2: white 3: blue

4: red

Figure 6-8. 0 Ring and Lead Removal

Assembly

7. Remove leads No. 1 through 5 as shown in Figure 6-8, from the PC Board/Heatsink assembly.

8. Remove the PC Board/Heatsink Assembly using the following procedure.

a. Hold the probe at positions A and B as shown in Figure 6-9 using

pliers or a wrench.

b. Remove the PC Board/Heatsink assembly by rotating it in the

direction of arrow C as shown in Figure 6-9.

PC b'd/Heatsink Assembly

Cable Assembly

Figure 6-9. PC Board/Heatsink Assembly Removal

6-9

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

THEORY OF OPERATION

The HP 41800A active probe consists of amplifiers and regulators. The amplifiers provide unity gain. The amplifiers are on the PC board/Heatsink assembly and the Amplifier/ReguIator Board assembly.

The regulators convert the dc voltage (+15 V and -12.6 V) sup-

plied from the host instrument, and supply the regulated dc volt- ages (+15 V, +9 V, -7 V, and -12 V) to the amplifiers. The regula-

tors are on the Amplifier/Regulator Board assembly.

TROUBLESHOOTING GUIDE

Troubleshooting should be begin during the performance test. If the HP 41800A fails the performance test, perform the following procedure.

1. Check the voltage supplied by the host instrument. Refer to Figure 2-1, Probe Power Requirements for the required

voltage.

2. Check the probe tip for damage. If the probe tip is defective, replace the probe tip.

3. Confirm that the gain of the PC board/Heatsink assembly is approximately -6 dB. The probing point is shown in Figure 6-

10. If the gain is wrong, replace the PC board/Heatsink assembly.

Probing Point

Figure 6-10. PC Board/Heatsink Assembly Check

6-10

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

4. Check the Cable assembly for damage. If it is defective, replace it.

Lead assignment:

1 -12.6 V (from Host Instrument) 2 +15 V (from Host Instrument) 3 +9 V (to PC Board/Heatsink Assembly) 4 -7 V (to PC Board/Heatsink Assembly) 5 GND (from Host Instrument) 6 S (from PC Board/Heatsink Assembly) 7 R (from PC Board/Heatsink Assembly)

A R (to Amplifier/Regulator Board) B S (to Amplifier/Regulator Board) C -7 V (from Amplifier/Regulator Board) D +9 V (from Amplifier/Regulator Board) E (coaxial cable)

E C A

D B

6 5

4 3

Figure 6-11. Lead Assignment

5. If the PC board/Heatsink assembly and the Cable assembly is ok, the Amplifier/Regulator board is defective.

6-11

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

NOTES

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

REGIONAL SALES AND SUPPORT OFFICES

For more information about Agilent Technologies test and measurement products, applications, services, and

for a current sales office listing, visit our web site: http://www.agilent.com/find/tmdir. You can also contact one

of the following centers and ask for a test and measurement sales representative. 11/29/99

United States:

Agilent Technologies Test and Measurement Call Center P. O .Bo x 4026 Englewood, CO 80155-4026

(tel) 1 800 452 4844

Canada:

Agilent Technologies Canada Inc.

5150 Spectrum Way Mississauga, Ontario L4W 5G1

(tel) 1 877 894 4414

Europe:

Agilent Technologies Test & Measurement European Marketing Organization P.O.Box 999

1180 AZ Amstelveen

The Netherlands

(tel) (31 20) 547 9999

(fax) (61 3) 9272 0749 (tel) 0 800 738 378 (New Zealand) (fax) (64 4) 802 6881

Asia Pacific:

Agilent Technologies 24/F, Cityplaza One, 1111 King's Road, Taikoo Shing, Hong Kong (tel) (852)-3197-7777 (fax) (852)-2506-9284

Japan:

Agilent Technologies Japan Ltd.

Call Center

9-1, Takakura-Cho, Hachioji-Shi, Tokyo 192-8510, Japan

(tel) (81) 426 56 7832

(fax) (81) 426 56 7840

Latin America:

Agilent Technologies Latin American Region Headquarters

5200 Blue Lagoon Drive, Suite #950 Miami, Florida 33126 U.S.A.

(tel) (305) 267 4245

(fax) (305) 267 4286

Australia/New Zealand:

Agilent Technologies Australia Pty Ltd

347 Burwood Highway Forest Hill, Victoria 3131

(tel) 1-800 629 485 (Australia)

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

This information is subject to change without notice.

February 2015

*41800-90010*

41800-90010

www.keysight.com

This information is subject to change without notice.

February 2015

KEYSIGHT

TECHNOLOGIES

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

11 11 111 111

41800-90010

www.keysig ht.com

Artisan Technology Group is your source for quality

new and certied-used/pre-owned equipment

• FAST SHIPPING AND

DELIVERY

• TENS OF THOUSANDS OF IN-STOCK ITEMS

• EQUIPMENT DEMOS

• HUNDREDS OF MANUFACTURERS

SUPPORTED

• LEASING/MONTHLY RENTALS

• ITAR CERTIFIED SECURE ASSET SOLUTIONS

SERVICE CENTER REPAIRS

Experienced engineers and technicians on staff at our full-service, in-house repair center

Instra

Remotely inspect equipment before purchasing with our interactive website at www.instraview.com

REMOTE INSPECTION

View

WE BUY USED EQUIPMENT

Sell your excess, underutilized, and idle used equipment We also offer credit for buy-backs and trade-ins

www.artisantg.com/WeBuyEquipment

LOOKING FOR MORE INFORMATION?

Visit us on the web at www.artisantg.com for more information on price quotations, drivers, technical

specications, manuals, and documentation

Keysight 41800A Operation Note

Specifications and Main Features

Frequently Asked Questions

User Manual