Agilent 53150A Service Guide

Assembly Level Service Guide

This guide describes how to service the Agilent 53150A, 53151A, and 53152A Microwave Frequency Counters. The information in this guide applies to instruments having the number prefix below, unless accompanied by a “Manual Updating Changes” package indicating otherwise.

SERIAL PREFIX NUMBER: 3735A, US3925, and US4050 (53150A)

3736A, US3926, and US4051 (53151A) 3737A, US3927, and US4052 (53152A)

Agilent 53150A/151A/152A Microwave Frequency Counter

 Copyright Agilent Technologies, Inc. 1999, 2002

Printed: August 2002

Printed in U.S.A.

Manual part number 53150-90015

Certification and Warranty

Certification

Agilent Technologies, Inc. certifies that this product met its published specification at the time of shipment from the factory. Agilent further certifies that its calibration measurements are traceable to the United States National Institute of Standards and Technology (formerly National Bureau of Standards), to the extent allowed by the Institute’s calibration facility, and to the calibration facilities of other International Standards Organization members.

Warranty

Agilent warrants Agilent hardware, accessories and supplies against defects in materials and workmanship for a period of one year from date of shipment. If Agilent receives notice of such defects during the warranty period, Agilent will, at its option, either repair or replace products which prove to be defective. Replacement products may be either new or like-new.

Agilent warrants that Agilent software will not fail to execute its programming instructions, for the period specified above, due to defects in material and workmanship when properly installed and used. If Agilent receives notice of such defects during the warranty period, Agilent will replace software media which does not execute its programming instructions due to such defects.

For detailed warranty information, see back matter.

Safety Considerations

General

This product and related documentation must be reviewed for familiarization with this safety markings and instructions before operation.

Before Cleaning

Disconnect the product from operating power before cleaning.

Warning Symbols That May Be Used In This Book

Instruction manual symbol; the product will be marked with this symbol when it is necessary for the user to refer to the instruction manual.

Indicates hazardous voltages.

Indicates earth (ground) terminal.

Indicates terminal is connected to chassis when such connection is not apparent.

Indicates Alternating current.

Indicates Direct current.

Safety Considerations (cont’d)

WARNING

BODILY INJURY OR DEATH MAY RESULT FROM FAILURE TO HEED A WARNING. DO NOT PROCEED BEYOND A WARNING UNTIL THE INDICATED CONDITIONS ARE FULLY UNDERSTOOD AND MET.

CAUTION

Damage to equipment, or incorrect measurement data, may result from failure to heed a caution. Do not proceed beyond a CAUTION until the indicated conditions are fully understood and met.

Safety Earth Ground

An uninterruptible safety earth ground must be maintained from the mains power source to the product’s ground circuitry.

WARNING

WHEN MEASURING POWER LINE SIGNALS, BE EXTREMELY CAREFUL AND ALWAYS USE A STEP-DOWN ISOLATION TRANSFORMER WHICH OUTPUT IS COMPATIBLE WITH THE INPUT MEASUREMENT CAPABILITIES OF THIS PRODUCT. THIS PRODUCT’S FRONT AND REAR PANELS ARE TYPCIALLY AT EARTH GROUND. THUS, NEVER TRY

TO MEASURE AC POWER LINE SIGNALS WITHOUT AN ISOLATION TRANSFORMER.

For additional safety and acoustic noise information, see back matter.

Agilent Technologies, Inc. 7.C.NL.06.15.01.R1.M.CW6FC 5301 Stevens Creek Boulevard Santa Clara, California 95052-8059

How to Use This Guide vii

Repair Strategy vii Instrument Identification viii Instruments Covered by this Guide viii Assembly-Level Service Guide Organization viii

How to Order Guides ix Description of the Microwave Frequency Counter x Options xi

Hardware xi

Support xi Accessories Supplied and Available xii

Accessories Supplied xii

Accessories Available xii

Manuals Supplied xii

1 Performance Tests

Introduction 1-2

Operational Verification 1-2

Complete Performance Tests 1-3

Recommended Calibration Cycle 1-3

Test Record 1-3 Equipment Required 1-4 Operational Verification 1-5

Power-On Self Tests 1-5

10 MHz Test 1-6

Run Self Test 1-7

External Timebase Test 1-8

10 MHz External Timebase Input Test 1-8 Complete Performance Tests 1-11 Test 1: External Timebase Input Test 1-12

1 MHz External Timebase Input Test 1-12

2 MHz External Timebase Input Test 1-14

5 MHz External Timebase Input Test 1-14

10 MHz External Timebase Input Test 1-15

Assembly Level Service Guide iii

Contents

Test 2: Channel 1 Frequency Sensitivity 1-16

Test 2a: 10 Hz to 20 MHz Frequency Sensitivity 1-16 Test 2b: 50 MHz to 125 MHz Frequency Sensitivity 1-18

Test 3: Channel 2 Frequency Sensitivity 1-21

Test 3a: 50 MHz to 20 GHz Frequency Sensitivity 1-21 Test 3b: 22 GHz to 26.5 GHz Frequency Sensitivity 1-23 Test 3c: 30 GHz to 46 GHz Frequency Sensitivity 1-24

Test 4: Channel 2 Power Measurement 1-25

Test 4a: 50 MHz to 20 GHz Power Measurement

(–20 dBm) 1-25

Test 4b: Channel 2 22 GHz to 26.5 GHz Power Measurement

(–20 dBm) 1-27

Test 4c: Channel 2 26.5 GHz to 46 GHz Power Measurement

(–20 dBm) 1-28

Test 4d: Channel 2 50 MHz to 20 GHz Power Measurement

(0 dBm) 1-28

Test 4e: Channel 2 22 GHz to 26.5 GHz Power Measurement

(0 dBm) 1-29

Test 4f: Channel 2 30 GHz to 46 GHz Power Measurement

(0 dBm) 1-29 Performance Test Record (Page 1 of 4) 1-30 Performance Test Record (Page 2 of 4) 1-31 Performance Test Record (Page 3 of 4) 1-32 Performance Test Record (Page 4 of 4) 1-33

2Service

Introduction 2-2 Returning the Counter to

Agilent Technologies for Service 2-3

Providing Repair Information 2-3 Packing Counter in Original Packaging Materials 2-4 Packing Counter in Other Packaging Materials 2-4

Calibration Procedure 2-6

Equipment Required 2-6

iv Assembly Level Service Guide

Contents

Pre-Troubleshooting Information 2-8

Safety Considerations 2-8 Recommended Test Equipment 2-9 Repair Considerations 2-9

Electrostatic Discharge 2-9 Surface Mount Repair 2-10 Disassembly and Reassembly Specifics 2-10

After Service Considerations 2-10

Product Safety Checks 2-10 Product Performance Checks 2-11

Assembly Identification and Location 2-11

Troubleshooting the Counter 2-13

Power Supply Check 2-13

Adjusting the +5 VDC Output 2-14

Self-Test 2-15

Running the Self Test 2-15 Self Test Error Messages 2-16

3 Replacing Assemblies

Introduction 3-2 Tools Required 3-3 Do This First 3-3 Removing the Bumpers 3-4 Removing the Handle and Handle Mounts 3-5 Removing the Rear Bezel 3-6 Removing the Shroud 3-8 Removing the Front Bezel 3-11 Removing the Rear Panel Assembly 3-12 Removing the Cooling Fan 3-15 Replacing the Power Supply 3-16

Assembly Level Service Guide v

Contents

4Replaceable Parts

Introduction 4-2 Replaceable Parts 4-2 How To Order A Part 4-3

Contacting Agilent Technologies 4-4

Parts Identification 4-5

Reference Designations 4-5 Cabinet Parts and Hardware 4-5 Accessories and Miscellaneous Items 4-5

5 Backdating

Introduction 5-2

6 Specifications

Introduction 6-2

Measurement Specifications and Characteristics 6-3 Typical power measurement uncertainty

at 25°C for various input levels 6-5

Typical power measurement uncertainty

at −25 dBm input level 6-6

vi Assembly Level Service Guide

In This Guide

This guide provides assembly-level service information for the Agilent 53150A, 53151A, and 53152A Counters.

How to Use This Guide

Repair Strategy

This service guide is designed to isolate failures to the assembly level only.

The Agilent 53150A/151A/152A Counter can be returned to Agilent for all service work, including troubleshooting, and verifying specifications. Contact your nearest Agilent Sales and Service Office for more details.

NOTE ISD (Instrument Service Division) Emergency Response or Express

Calibration Service is available for Agilent customers in the USA. If downtime is critical, you can receive your repaired Counter via overnight shipment. Call 1-800-403-0801, and ask for Emergency Response or Express Calibration Service. When your Counter is repaired, it is returned via overnight shipment at no extra charge.

If you decide to service the Counter yourself, use the troubleshooting procedures in Chapter 2 (Service) and the disassembly and reassembly procedures in Chapter 3 (Replacing Assemblies). Then, use the calibration instructions in Chapter 2 to calibrate the Counter for peak-performance operation, and finally, perform all of the performance tests in Chapter 1 to verify that the Counter is operating to the specifications.

NOTE If the motherboard, the sampler, or the front-panel assembly are

defective, the instrument must be returned to an Agilent Service Center for repair and recalibration.

Assembly Level Service Guide vii

In This Guide

Instrument Identification

The instrument is identified by the serial number on the rear panel. Agilent uses a two-part serial number with the first part (prefix) identifying a series of instruments and the second part (suffix) identifying a particular instrument within a series. Agilent-assigned alpha characters before the prefix identify the country in which the instrument was manufactured.

Instruments Covered by this Guide

This guide applies directly to Agilent 53150A, 53151A, and 53152A Counters that have the same serial number prefix(es) shown on the title page. If the serial number prefix of your Counter differs from that listed on the title page of this guide, there may be differences between this guide and your instrument.

Instruments having a higher serial prefix are covered (when required) by one or more manual-change sheets included with this guide. If a required change sheet is missing, contact your nearest Agilent Sales Office listed at the back of this guide.

Assembly-Level Service Guide Organization

This Assembly-Level Service Guide consists of a table of contents, a preface, six chapters, and an index. The page headers identify the chapters and sections of this manual. The chapter contents are summarized as follows:

Chapter 1 Performance Tests provides procedures that verify the Counter operates properly and meets the Agilent 53150A/151A/152A specifications given in Chapter 6, “Specifications,” in this guide.

Chapter 2 Service is divided into seven main sections that provide instructions for returning the Counter to Agilent for service, calibrating the Counter, and troubleshooting the assemblies in the Counter.

Chapter 3 Replacing Assemblies provides procedures for replacing defective assemblies and/or modules in the Counter.

viii Assembly Level Service Guide

In This Guide

Chapter 4 Replaceable Parts lists the replaceable parts contained in the Counter, and explains how to order replacement parts for your Counter.

Chapter 5 Backdating contains information required to adapt this manual for older instruments (to be provided when required).

Chapter 6 Specifications lists all the specifications and operating characteristics for the Agilent 53150A/151A/152A Counter.

How to Order Guides

The part number for this guide is listed on the Certification and Warranty page (on the back of the title page) and on the back cover of this guide.

Assembly Level Service Guide ix

In This Guide

Description of the Microwave Frequency Counter

The Agilent 53150A, 53151A, and 53152A Microwave Frequency Counters are capable of measuring frequencies from 10 Hz to 125 MHz on Channel 1 and from 50 MHz to 20 GHz (53150A), 26.5 GHz (53151A), and 46 GHz (53152A) on Channel 2. These frequency counters are also capable of measuring power on Channel 2 (in the same frequency ranges). All three Counters have a maximum frequency resolution of 1 Hz.

The Agilent 53150A/151A/152A provides GPIB and RS-232 serial interfaces and are suitable for bench-top and ATE operation.

The basic measurement functions of the Agilent 53150A/151A/152A include Frequency, Relative Frequency, Frequency Offset, and Power (including Power Offset and Relative Power). All of these features are accessible from the front panel and over the GPIB and RS-232 interfaces.

The Agilent 53150A/151A/152A includes the following additional measurement functions and features that are designed specifically for manufacturing and service applications:

• 1, 2, 5, and 10 MHz external reference capability

• Optional high-stability oven oscillator for high-accuracy needs and

lengthened calibration cycles

• Frequency and power offset capabilities for relative measurements

• SCPI programming capability

• Battery and dc input option for operation in locations where AC

power is unavailable

• Optional soft carrying case for safe transportation and mobile use

Programmable control is performed via an GPIB or an RS-232 serial interface. The GPIB and RS-232C ports are standard for the Agilent 53150A, 53151A, and 53152A.

x Assembly Level Service Guide

In This Guide

Options

The options available for the Agilent 53150A/151A/152A are listed following this paragraph. Specifications for the options are listed in Chapter 6, “Specifications.” Options ordered with the Counter are installed at the factory and are ready for operation on delivery.

Hardware

• High Stability Oven Timebase, Option 001

• Battery/DC Power Input, Option 002

• Rack Mount Kit, Option 1CM (not installed)

• Soft Carrying Case, Option 007 (not installed)

NOTE Hardware options can be retrofitted at an Agilent Service Center.

However, the cost to retrofit options is considerably higher than the cost of the same options when purchased with the instrument.

Support

• 3-year Return to Agilent for Repair, Option W30

• 3-year Return to Agilent for Calibration, Option W32

• 3-year Return to Agilent for Standards Compliant Calibration, Option W34

• 5-year Return to Agilent for Repair, Option W50

• 5-year Return to Agilent for Calibration, Option W52

• 5-year Return to Agilent for Standards Compliant Calibration, Option W54

Assembly Level Service Guide xi

In This Guide

Accessories Supplied and Available

Accessories Supplied

• Power cord, 2.3 meters (part number dependent upon destination country)

• Fuse (Agilent P/N 2110-0007)

Accessories Available

• Accessories for use with Option 002 (Battery/DC Power Input):

– Automotive Power Adapter (Agilent P/N 53150-60214)

– Battery (Agilent P/N 53150-80010)

– Battery Charger (Agilent P/N 53150-60217) 115V

(includes Automotive Power Adapter)

– Battery Charger (Agilent P/N 53150-60218) 230V

(includes Automotive Power Adapter)

– GPIB Cables (Agilent P/N 10833A/B/C/D)

• RS-232 Cable (Agilent P/N 53150-60215)

• Soft Carrying Case (Agilent P/N 53150-80016) — same as Option 007

• Rack Mount Kit (Agilent P/N 53150-67001) — same as Option 1CM

Manuals Supplied

Agilent 53150A/151A/152A Operating Guide

(Agilent P/N 53150-90013)

Agilent 53150A/151A/152A Programming Guide

(Agilent P/N 53150-90014)

Agilent 53150A/151A/152A Assembly-Level Service Guide

(Agilent P/N 53150-90015)

xii Assembly Level Service Guide

Performance Tests

Verifying Specifications

Chapter 1 Performance Tests

Introduction

This chapter provides procedures to test the electrical performance of the Agilent 53150A/151A/152A. These procedures are based on the Counter specifications in Chapter 6, “Specifications.”

Two types of testing are provided:

• Operational Verification

• Complete Performance Tests

This chapter is organized as follows:

• Introduction pg. 1-2

• Equipment Required pg. 1-4

• Operational Verification pg. 1-5

• Complete Performance Tests pg. 1-11

• Performance Test Record pg. 1-30

Operational Verification

Operational Verification is an abbreviated series of tests that you can perform (instead of performing the Complete Performance Tests) to provide a high degree of confidence that the instrument is operating properly. Operational Verification is useful for incoming inspection, routine maintenance, and after instrument repair.

1-2 Assembly Level Service Guide

Chapter 1 Performance Tests

Introduction

Complete Performance Tests

The Complete Performance Tests verify the specifications listed in Chapter 6, “Specifications.” All tests can be performed without opening the instrument.

Recommended Calibration Cycle

The Counter requires periodic verification of operation. Depending on the type of use, environmental conditions, aging, and measurement accuracy required, the Counter should be checked using the operational verification procedure at least once every year after the unit is first placed in operation. A full Calibration and Performance Test should be performed each time the Counter changes environment or if an assembly or module has been replaced.

Test Record

The results of the Operational Verification and the Complete Performance Tests should be recorded on a copy of the Performance Test Record, located at the end of the Complete Performance Test section in this chapter.

Assembly Level Service Guide 1-3

Chapter 1 Performance Tests

Equipment Required

Table 1-1 lists the test equipment and accessories needed to perform the tests.

Table 1-1. Recommended Test Equipment and Accessories

Model

Instrument Type Required Characteristics

Synthesized Signal Generator 10 Hz to 20 MHz

+7 dBm to –40 dBm

Microwave Synthesized Signal Generator

Microwave Amplifier 45 MHz to 50 GHz Agilent 83051A 1 P, T

Power Meter 50 MHz to 50 GHz

Power Sensor 50 MHz to 50 GHz

Power Sensor Cable 2.4 mm to 2.4 mm, 5 ft. Agilent 11730A 1 P, T

50 Ω Feedthrough Terminator 50 Ω (m to f) BNC Agilent 10100C 1 OV, P, T

20 dB Attenuator DC to 50 GHz

Power Splitter DC to 50 GHz

Cables BNC (m) to BNC (m)

Adapters BNC (m) to SMA (f)

* Equivalent equipment can be substituted for all instruments and accessories. ** OV = Operational Verification P = Performance Tests C = Calibration T = Troubleshooting

10 MHz to 50 GHz Accuracy >1 x 10 +7 dBm to –50 dBm

+13 dBm to –50 dBm

2.4 mm (m) to 2.4 mm (f)

2.4 mm (f3x)

2.4 mm (m) to 2.4 mm (m)

3.5 mm (f) to 2.92 mm (m)

2.92 mm (m) to 2.4 mm (m)

2.92 mm (m) to 2.4 mm (f)

2.4 mm (m) to 2.4 mm (m)

2.4 mm (f) to 2.4 mm (f)

-10

Recommended *

Agilent 3325A/B 2 OV, P, T

Agilent 83650B 1 P, T

Agilent 437B 1 P, T

Agilent 8487A/D 1 P, T

Agilent 8490D (Opt. 020)

Agilent 11667C/D 1 P, T

Agilent 10503 series—2

Agilent 1250-2015 — Agilent 11904A Agilent 11904D Agilent 11900A Agilent 11900B

Quantity Required Use **

1P, T

OV, P, C, T

1 1 1 1 1

P, T

1-4 Assembly Level Service Guide

Chapter 1 Performance Tests

Operational Verification

If you are not familiar with operating the Counter, you should review Chapter 1, “Getting Started,” in the Agilent 53150A/151A/152A Operating Guide. However, the procedures in this chapter are written so that little experience is necessary. These procedures should be followed in the order in which they appear.

Power-On Self Tests

NOTE This test is appropriate for the Agilent 53150A, 53151A, and 53152A

Counters.

1 Inspect the Counter for damage.

2 Make sure no cables are connected to the Counter’s inputs.

3 Connect the power cord to the Counter and the power source.

NOTE Since the Counter’s power supply automatically senses the line voltage,

there is no AC input-voltage setting.

4 Turn on the Main ~ Power switch on the Counter’s rear panel.

NOTE It is normal for the fan in the Counter to run when the Counter is in

Standby mode. Power is supplied to the timebase whenever the Main ~ Power switch is on to maintain long-term measurement reliability, and the fan helps to maintain the timebase’s temperature stability.

5 Press and release the Power button on the front panel.

Assembly Level Service Guide 1-5

Chapter 1 Performance Tests

Operational Verification

6 Verify that the front-panel display shows the following:

• All segments of the front-panel display are temporarily activated.

NOTE To ensure that the test results are valid, the Counter and the test

• TESTING is displayed.

• SELF TEST OK is displayed.

• The model number of the Counter is displayed (a four-digit hex number

is also displayed).

• GPIB ADDR nn (nn = a two digit number from 0 to 30) is displayed.

• CH2 NO SIGNAL is displayed.

7 If an error message is displayed, refer to the troubleshooting section in

Chapter 2, “Service.”

8 Mark Pass or Fail in the Performance Test Record on page 1-30, Test 1.

equipment should be powered on for at least 30 minutes prior to beginning the tests. This allows the internal temperatures of the equipment and the timebase to stabilize.

10 MHz Test

1 Connect a BNC-to-BNC cable from the Reference 10MHz connector on the

Counter’s rear panel to the CHANNEL 1 input connector on the front panel.

2 Press and release the Chan Select key (CH1 is displayed).

3 Verify that the display reads 10,000,000 Hz.

4 Mark Pass or Fail in the Performance Test Record on page 1-30, Test 2.

1-6 Assembly Level Service Guide

Chapter 1 Performance Tests

Operational Verification

Run Self Test

NOTE This test is appropriate for the Agilent 53150A, 53151A, and 53152A

Counters.

1 Disconnect all signal cables from the input and Reference 10MHz

connectors.

2 Press and release the Shift key, and then press and release the Menu

(Reset/Local) key.

3 Press the up- and/or down-arrow key(s) as many times as necessary until

DO SELF TEST is displayed.

4 Press and release the Enter key.

5 If no errors are detected, SELF TEST OK is briefly displayed when the self

test is completed. If any error messages are displayed, refer to the troubleshooting section in Chapter 2, “Service.”

6 Mark Pass or Fail in the Performance Test Record on page 1-30, Test 3.

Assembly Level Service Guide 1-7

Chapter 1 Performance Tests

Operational Verification

External Timebase Test

This test verifies the 10 MHz external timebase specifications of the Counter by verifying that setting REF OSC to EXT allows the Counter to

NOTES • To ensure that the test results are valid, the Counter and the test

be synchronized to the external reference signal.

Equipment Required

Agilent 3325A/B Synthesizer (2) Agilent 10100C 50 Ω Feedthrough Terminator Agilent 10503 Series Coaxial Cables (BNC m to m) (2)

equipment should be powered on for at least 30 minutes prior to beginning the tests. This allows the internal temperatures of the equipment to stabilize.

• These tests are appropriate for the Agilent 53150A, 53151A, and 53152A Counters.

10 MHz External Timebase Input Test

1 Connect an Agilent 10503 series coaxial cable between the output of the

first Agilent 3325A/B Synthesizer and the Reference 10MHz connector on the Counter’s rear panel (see Figure 1-2).

2 Connect the Agilent 10100C 50 Ω Feedthrough Terminator to the

Counter’s CHANNEL 1 input connector.

3 Connect an Agilent 10503 series coaxial cable between the output of the

second Synthesizer and the Agilent 10100C 50Ω Feedthrough Terminator on the Counter’s CHANNEL 1 input connector.

1-8 Assembly Level Service Guide

Chapter 1 Performance Tests

Operational Verification

To Reference 10 MHz

Connector

(Rear Panel)

Agilent 3325A/B Synthesizer

Output

Agilent 53150A/51A/52A Counter

Channel 1

Agilent 3325A/B Synthesizer

Output

Figure 1-1. External Timebase Test Setup

4 Cycle the POWER button to preset the Counter.

5 Press the Shift key on the Counter’s front panel.

6 Press the Menu key on the Counter’s front panel.

7 If necessary, use the up- and down-arrow keys to cycle the display until it

reads REF OSC> INT.

8 Press the right-arrow key once. INT begins to flash off and on.

9 Press the up- or down-arrow key once. INT changes to EXT.

10 Press the Enter key.

11 Press the Chan Select key once to select the CHANNEL 1 input connector.

Assembly Level Service Guide 1-9

Chapter 1 Performance Tests

Operational Verification

12 Set the first Synthesizer (the one connected to the Counter’s rear-panel

Reference 10MHz connector) to output a 10 MHz, 1V rms, sine-wave signal.

NOTES • If you intend to perform the Complete Performance Tests next, do not

13 Set the second Synthesizer (the one connected to the CHANNEL 1 input) to

output a 2 MHz, 100 mV rms, sine-wave signal.

14 Press and release the Counter’s Reset/Local key.

15 Verify that the Counter displays a reading of approximately 2 MHz and

that the Ext Ref annunciator is activated.

16 Mark Pass or Fail for Test 4 in the Performance Test Record on page 1-30.

This completes the Operational Verification.

disconnect the cable from the Counter’s Reference 10MHz connector. This connection is used in the Complete Performance Tests.

• Do not turn off the Counter if you intend to perform the Complete Performance tests. Turning the Counter off and back on resets the reference oscillator (REF OSC) selection to internal (INT) and the channel selection to CHANNEL 2.

1-10 Assembly Level Service Guide

Chapter 1 Performance Tests

Complete Performance Tests

The Complete Performance Tests verify the specifications of the Agilent 53150A/151A/152A Counter listed in Chapter 6, “Specifications.” All of these tests can be performed without opening the instrument. Table 1-2 lists a summary of the performance tests.

Record the results of the performance tests in the appropriate place on the Performance Test Record, which starts on page 1-30.

NOTE To ensure that the test results are valid, the Counter and the test

equipment should be powered on for at least 30 minutes prior to beginning the tests. This allows the internal temperatures of the equipment and the timebase to stabilize.

Table 1-2. Complete Performance Tests

Page Number Test Description

Page 1-12 Test 1: External Timebase Input Test

Page 1-12 Test 2: Channel 1 Frequency Sensitivity

Page 1-21 Test 3: Channel 2 Frequency Sensitivity

Page 1-25 Test 4: Channel 2 Power Measurement

NOTE Other Counter measurement functions (e.g., Averaging) are mathemati-

cally derived by the microprocessor from the parameters verified by these performance tests. If the Counter passes the performance tests, the other measurement functions are also functioning to specifications.

Assembly Level Service Guide 1-11

Chapter 1 Performance Tests

Test 1: External Timebase Input Test

NOTES • To ensure that the test results are valid, the Counter and the test

This test verifies the 10 MHz external timebase specifications of the Counter by verifying that setting REF OSC to EXT allows the Counter to be synchronized to the external reference signal.

Equipment Required

Agilent 3325A/B Synthesizer (2) Agilent 10100C 50 Ω Feedthrough Terminator Agilent 10503 Series Coaxial Cables (BNC m to m) (2)

equipment should be powered on for at least 30 minutes prior to beginning the tests. This allows the internal temperatures of the equipment to stabilize.

• These tests are appropriate for the Agilent 53150A, 53151A, and 53152A Counters.

1 MHz External Timebase Input Test

1 Connect an Agilent 10503 series coaxial cable between the output of the

first Agilent 3325A/B Synthesizer and the Reference 10MHz connector on the Counter’s rear panel (see Figure 1-2).

2 Connect the Agilent 10100C 50 Ω Feedthrough Terminator to the

Counter’s CHANNEL 1 input connector.

3 Connect an Agilent 10503 series coaxial cable between the output of the

second Synthesizer and the Agilent 10100C 50Ω Feedthrough Terminator on the Counter’s CHANNEL 1 input connector.

1-12 Assembly Level Service Guide

Chapter 1 Performance Tests

Test 1: External Timebase Input Test

Agilent 3325A/B Synthesizer

To Reference 10 MHz

Connector

(Rear Panel)

Output

Agilent 53150A/51A/52A Counter

Channel 1

Agilent 3325A/B Synthesizer

Output

Figure 1-2. External Timebase Test Setup

4 Cycle the POWER button to preset the Counter.

5 Press the Shift key on the Counter’s front panel.

6 Press the Menu key on the Counter’s front panel.

7 If necessary, use the up- and down-arrow keys to cycle the display until it

reads REF OSC> INT.

8 Press the right-arrow key once. INT begins to flash off and on.

9 Press the up- or down-arrow key once. INT changes to EXT.

10 Press the Enter key.

11 Press the Chan Select key once to select the CHANNEL 1 input connector.

Assembly Level Service Guide 1-13

Chapter 1 Performance Tests

Test 1: External Timebase Input Test

12 Set the first Synthesizer (the one connected to the Counter’s rear-panel

Reference 10MHz connector) to output a 1 MHz, 1V rms, sine-wave signal.

13 Set the second Synthesizer (the one connected to the CHANNEL 1 input) to

output a 2 MHz, 100 mV rms, sine-wave signal.

14 Press and release the Counter’s Reset/Local key.

15 Verify that the Counter displays a reading of approximately 2 MHz and

that the Ext Ref annunciator is activated.

16 Mark Pass or Fail for Test 1a in the Performance Test Record on

page 1-30.

2 MHz External Timebase Input Test

1 Change the frequency of the first Synthesizer (connected to the Counter’s

rear-panel Reference 10 MHz connector) to 2 MHz.

2 Press and release the Counter’s Reset/Local key.

3 Verify that the Counter displays a reading of approximately 2 MHz and

that the Ext Ref annunciator is activated.

4 Mark Pass or Fail for Test 1b in the Performance Test Record on page 1-30.

5 MHz External Timebase Input Test

1 Change the frequency of the first Synthesizer (connected to the Counter’s

rear-panel Reference 10 MHz connector) to 5 MHz.

2 Press and release the Counter’s Reset/Local key.

3 Verify that the Counter displays a reading of approximately 2 MHz and

that the Ext Ref annunciator is activated.

4 Mark Pass or Fail for Test 1c in the Performance Test Record on page 1-30.

1-14 Assembly Level Service Guide

Chapter 1 Performance Tests

Test 1: External Timebase Input Test

10 MHz External Timebase Input Test

1 Change the frequency of the first Synthesizer (connected to the Counter’s

rear-panel Reference 10 MHz connector) to 10 MHz.

2 Press and release the Counter’s Reset/Local key.

3 Verify that the Counter displays a reading of approximately 2 MHz and

that the Ext Ref annunciator is activated.

4 Mark Pass or Fail for Test 1d in the Performance Test Record on page 1-30.

Assembly Level Service Guide 1-15

Chapter 1 Performance Tests

Test 2: Channel 1 Frequency Sensitivity

This set of tests verifies the frequency-sensitivity specifications of Channel 1 of the Agilent 53150A/151A/152A Counters.

Equipment Required

Agilent 3325A/B Synthesizer Agilent 83650B Synthesizer Agilent 437B Power Meter Agilent 8487A/D Power Sensor Agilent 11730A Power Sensor Cable Agilent 11667C Power Splitter Agilent 8490D (Opt. 020) 20 dB Attenuator Agilent 1250-2015 BNC (m) to SMA (f) Adapter Agilent 11904A 2.92 mm (m) to 2.4 mm (m) Adapter Agilent 10503 Series Coaxial Cable (BNC m to m) 2 mm (m) to 2 mm (f) Cable (2)

Test 2a: 10 Hz to 20 MHz Frequency Sensitivity

NOTE This test is appropriate for the Agilent 53150A, 53151A, and 53152A

Counters.

1 Connect an Agilent 10503 Series Coaxial Cable between the RF output

connector on the Agilent 3325A/B Synthesizer and Counter’s CHANNEL 1 connector.

1-16 Assembly Level Service Guide

Chapter 1 Performance Tests

Test 2: Channel 1 Frequency Sensitivity

Agilent 3325A/B Synthesizer

Reference

Output

(Rear Panel)

To Reference 10 MHz

Connector (Rear Panel)

Agilent 53150A/51A/52A Counter

Output

Channel 1

Figure 1-3. 10 Hz to 20 MHz Frequency Sensitivity Test Setup

2 Verify that the Counter is still set to use an external reference signal

(refer to steps 5 through 10 on page 1-13).

3 Set the output of the Synthesizer to the first frequency specified for

Test 2a in the Performance Test Record on page 1-30 (10 Hz).

4 Set the power output of the Synthesizer to the first power value specified

for Test 2a in the Performance Test Record on page 1-30 (–14.9 dBm) (40 mV).

5 Record the frequency value read on the Counter (±1 count) for Test 2a in

the Performance Test Record on page 1-30.

6 Repeat steps 3, 4, and 5 for each of the remaining frequencies specified for

Test 2a. Don’t forget to change the power level when performing the 1 KHz test (–19.2 dBm) (25 mV).

7 If all of the frequency values you recorded for Test 2a are correct, mark

Pass in the Performance Test Record for Test 2a. If any of the frequency readings you recorded are incorrect, mark Fail in the Performance Test Record.

Assembly Level Service Guide 1-17

Chapter 1 Performance Tests

Test 2: Channel 1 Frequency Sensitivity

NOTES • Do not disconnect the cable from the Counter’s Reference 10MHz

connector. This connection is used in the following test.

• Do not turn off the Counter. Turning the Counter off and back on resets the reference oscillator (REF OSC) selection to internal (INT) and the channel selection to CHANNEL 2.

Test 2b: 50 MHz to 125 MHz Frequency Sensitivity

1 Connect an Agilent 10100C 50 Ω Feedthrough Terminator to the

CHANNEL 1 input connector on the Counter’s front panel (refer to Figure 1-4 for steps 1 through 9).

Agilent 83650B Synthesizer

Reference

Output

(Rear Panel)

Agilent 53150A/51A/52A Counter

To Reference 10 MHz

(Rear Panel)

(See Note Below)

Agilent 10100C 50

Feedthrough

Channel 1

RF Output

Agilent 8490D 20 dB Attenuator

Agilent 11904A 2.92 mm to 2.4 mm Adapter

Agilent 1250-2015 BNC to SMA Adapter

Agilent 437B Power Meter

Agilent 11667C

Power Splitter

Agilent 8487A/D

Power Sensor

input

Figure 1-4. 50 MHz to 125 MHz Frequency Sensitivity Test Setup

NOTE If the 10 MHz reference output of the 53650B Synthesizer is not sufficient

to drive the 53150A/51A/52A, reverse the test setup so that you drive the 83650B from the Counter.

1-18 Assembly Level Service Guide

Chapter 1 Performance Tests

Test 2: Channel 1 Frequency Sensitivity

2 Connect the Agilent 1250-2015 BNC (m) to SMA (f) Adapter to the

Agilent 10100C Feedthrough Terminator on the Counter’s CHANNEL 1 connector.

3 Connect the Agilent 11904A 2.92 mm (m) to 2.4 mm (m) Adapter to the

Agilent 1250-2015 Adapter.

4 Connect the Agilent 8490D 20 dB Attenuator to the Agilent 11904A

Adapter.

5 Connect one of the output connectors on the Agilent 11667C Power

Splitter to the Agilent 8490D Attenuator

6 Connect the Agilent 11900B 2.4 mm (f) to 2.4 mm (f) Adapter to the RF

output of the Synthesizer.

7 Connect a 2.4 mm (m) to 2.4 mm (m) cable between the Adapter on the

Synthesizer’s RF output connector and the input connector on the Agilent 11667C Power Splitter.

8 Connect the Agilent 8487A/D Power Sensor to the remaining output

connector on the Agilent 11667C Power Splitter.

9 Connect the Agilent 11730A Power Sensor Cable between the Power

Sensor and the sensor connector on the Agilent 437B Power Meter.

10 Verify that the Counter is still set to use an external reference signal

(refer to steps 5 through 10 on page 1-13).

11 Set the output of the Agilent 83650B Synthesizer to the first frequency

specified for Test 2b in the Performance Test Record on page 1-30 (50 MHz).

12 Set the power output of the Synthesizer (read on the Power Meter) to a

power value 20 dBm above the value specified for Test 2b in the Performance Test Record on page 1-30 (+.8 dBm). (The added 20 dBm compensates for the 20 dB Attenuator.)

Assembly Level Service Guide 1-19

Chapter 1 Performance Tests

Test 2: Channel 1 Frequency Sensitivity

13 Record the frequency value read on the Counter (±1 count) for Test 2b in

the Performance Test Record on page 1-30.

NOTES • Do not disconnect the rest of the test setup, as these connections are

14 Set the output of the Synthesizer to 125 MHz, and repeat steps 11

through 13.

15 If both of the frequency values you recorded for Test 2b are correct, mark

Pass in the Performance Test Record for Test 2b. If either of the frequency readings you recorded are incorrect, mark Fail in the Performance Test Record.

16 Disconnect the Agilent 10100C Feedthrough Terminator, the

Agilent 1250-2015 Adapter, and the Agilent 11904A Adapter from the Counter’s CHANNEL 1 connector.

also used in the Channel 2 Frequency Sensitivity test.

• Do not turn off the Counter. Turning the Counter off and back on resets the reference oscillator (REF OSC) selection to internal (INT).

1-20 Assembly Level Service Guide

Chapter 1 Performance Tests

Test 3: Channel 2 Frequency Sensitivity

This set of tests verifies the frequency-sensitivity specifications of Channel 2 of the Agilent 53150A/151A/152A Counters.

Equipment Required

Agilent 83650B Synthesizer Agilent 437B Power Meter Agilent 8487A/D Power Sensor Agilent 11667C Power Splitter Agilent 11730A Power Sensor Cable Agilent 8490D (Opt. 020) 20 dB Attenuator Agilent 11904D 2.92 mm (m) to 2.4 mm (f) Adapter Agilent 10503 series Coaxial Cable (BNC m to m)

2.4 mm (m) to 2.4 mm (m) Cable (2)

Test 3a: 50 MHz to 20 GHz Frequency Sensitivity

NOTE This test is appropriate for the Agilent 53150A, 53151A, and 53152A

Counters.

1 Connect the Agilent 11904D 2.92 mm (m) to 2.4 mm (f) Adapter to the

Counter’s CHANNEL 2 input connector (refer to Figure 1-5 for steps 1 through 4).

2 Connect the Agilent 8490D Attenuator to the Agilent 11904D Adapter,

as shown in Figure 1-5 (the other end of the Attenuator should remain connected to the Agilent 11667C Power Splitter).

3 Verify that the cable (with Adapter) is still connected between the RF

output of the Agilent 83650B Synthesizer and the Power Splitter input connector.

4 Verify that the Power Sensor is still connected to the Power Splitter and

that the Power Sensor Cable is still connected between the Power Sensor and the sensor connector on the Power Meter.

Assembly Level Service Guide 1-21

Chapter 1 Performance Tests

Test 3: Channel 2 Frequency Sensitivity

Agilent 83650B Synthesizer

To Reference

Output

(Rear Panel)

Agilent 53150A/51A/52A Counter

To Reference 10 MHz

(Rear Panel)

Channel 2

RF Output

Agilent 11667C Power Splitter

Agilent 8490D 20 dB Attenuator (50 MHz to 40 GHz tests only)

Agilent z11904D Adapter

Agilent 437B Power Meter

input

Agilent 8487A/D Power Sensor

Figure 1-5. 50 MHz to 20 GHz Frequency Sensitivity Test Setup

5 Verify that the Counter is still set to use an external reference signal

(refer to steps 5 through 10 on page 1-13).

6 Set the output of the Agilent 83650B Synthesizer to the first frequency

specified for Test 3a in the Performance Test Record on page 1-31 (50 MHz).

7 Set the power output of the Synthesizer (read on the Power Meter) to a

power value 20 dBm above the value specified for Test 3a in the Performance Test Record on page 1-31 (0 dBm). (The added 20 dBm compensates for the 20 dB Attenuator.)

8 Record the frequency value read on the Counter (±1 count) for Test 3a in

the Performance Test Record on page 1-31.

9 Repeat steps 6, through 8 for each of the remaining frequencies specified

for Test 3a. Don’t forget to change the power level when performing the 400 MHz and 19 GHz tests (53150A, 53151A, and 53152A) and the 16 GHz and 19 GHz tests (53152A only).

1-22 Assembly Level Service Guide

Chapter 1 Performance Tests

Test 3: Channel 2 Frequency Sensitivity

10 If all of the frequency values you recorded for Test 3a are correct, mark

Pass in the Performance Test Record. If any of the frequency readings you recorded are incorrect, mark Fail in the Performance Test Record.

Test 3b: 22 GHz to 26.5 GHz Frequency Sensitivity

NOTE This test is appropriate for the Agilent 53151A and 53152A Counters.

1 Use the same test setup as described for Test 3a on page 1-21.

2 Set the output of the Agilent 83650B Synthesizer to the first frequency

specified for Test 3b in the Performance Test Record on page 1-31 (22 GHz).

3 Set the power output of the Synthesizer (read on the Power Meter) to

a power value 20 dBm above the value specified for Test 3b in the Performance Test Record on page 1-31 (–5 dBm for the Agilent 53151A; –7 dBm for the Agilent 53152A). (The added 20 dBm compensates for the 20 dB Attenuator.)

4 Record the frequency value read on the Counter (±1 count) for Test 3b in

the Performance Test Record on page 1-31.

5 Repeat steps 2 through 4 for each of the remaining frequencies specified

for Test 3b.

6 If all of the frequency values you recorded for Test 3b are correct, mark

Pass in the Performance Test Record for Test 3b. If any of the frequency readings you recorded are incorrect, mark Fail in the Performance Test Record.

Assembly Level Service Guide 1-23

Chapter 1 Performance Tests

Test 3: Channel 2 Frequency Sensitivity

Test 3c: 30 GHz to 46 GHz Frequency Sensitivity

NOTE This test is appropriate for the 53152A Counter only.

1 Use the same test setup as described for Test 3a on page 1-21.

2 Set the output of the Agilent 83650B Synthesizer to the first frequency

specified for Test 3c in the Performance Test Record on page 1-31 (30 GHz).

3 Set the power output of the Synthesizer (read on the Power Meter) to a

power value 20 dBm above the value specified for Test 3c in the Performance Test Record on page 1-31 (–3 dBm). (The added 20 dBm compensates for the 20 dB Attenuator.)

4 Record the frequency value read on the Counter (±1 count) for Test 3c in

the Performance Test Record on page 1-31.

5 Repeat steps 2, through 4 for each of the remaining frequencies specified

for Test 3c. Don’t forget to change the power level for the 42, 44, and 46 GHz tests.

6 If all of the frequency values you recorded for Test 3c are correct, mark

Pass in the Performance Test Record for Test 3c. If any of the frequency readings you recorded are incorrect, mark Fail in the Performance Test Record.

NOTES • Do not disconnect the Power Sensor or the Power Sensor Cable from

the power meter or the Power Splitter. These connections are reused in the following tests.

• Do not turn off the Counter. Turning the Counter off and back on resets the reference oscillator (REF OSC) selection to internal (INT).

1-24 Assembly Level Service Guide

Chapter 1 Performance Tests

Test 4: Channel 2 Power Measurement

This set of tests verifies the power-measurement specifications of Channel 2 of the Agilent 53150A/151A/152A Counters.

Equipment Required

Agilent 83650B Synthesizer Agilent 83051A Microwave Amplifier Agilent 437B Power Meter Agilent 8487A/D Power Sensor Agilent 11730A Power Sensor Cable Agilent 11667C Power Splitter Agilent 11904D 2.92 mm (m) to 2.4 mm (f) Adapter Agilent 11900A 2.4 mm (m) to 2.4 mm (m) Adapter Agilent 11900B 2.4 mm (f) to 2.4 mm (f) Adapter

2.4 mm (m) to 2.4 mm (m) Cable (2)

Test 4a: 50 MHz to 20 GHz Power Measurement (–20 dBm)

NOTE This test is appropriate for the Agilent 53150A, 53151A, and 53152A

Counters.

1 Verify that the cable (with Adapter) is still connected to the RF output of

the Agilent 83650B Synthesizer.

2 Connect the other end of the 2.4 mm cable to the input connector on the

Agilent 83051A Microwave Amplifier.

3 Connect a 2.4 mm cable from the output of the Microwave Amplifier to the

input connector on the Agilent 11667C Power Splitter.

4 Verify that the Power Sensor is still connected to the Power Splitter and

that the Power Sensor Cable is still connected between the Power Sensor and the sensor connector on the Power Meter.

Assembly Level Service Guide 1-25

Chapter 1 Performance Tests

Test 4: Channel 2 Power Measurement

5 Connect the Agilent 11900A 2.4 mm (m) to 2.4 mm (m) Adapter to the

Counter’s CHANNEL 2 input connector.

the Counter’s CHANNEL 2 input connector.

Agilent 83650B Synthesizer

RF Output

Agilent

83051A

Microwave Amplifier

Agilent 53150A/51A/52A Counter

Agilent

Channel 2

11900B Adapter

Agilent

437B Power Meter

11667C Power Splitter

8487A/D Power Sensor

Input

Figure 1-6. 50 MHz to 20 GHz (–20 dBm) Power Measurement Test Setup

6 Connect the unused output of the Microwave Splitter to the Adapter on

7 Verify that the Counter is still set to CHANNEL 2 (if necessary, use the

Chan Select key on the Counter’s front panel to select CHANNEL 2).

8 Adjust the power output of the Synthesizer so that the power output of the

Microwave Amplifier is –20 dBm.

9 Set the Synthesizer to the first frequency value listed for Test 4a in the

Performance Test Record on page 1-32 (50 MHz).

10 Record the actual power reading in the Performance Test Record.

1-26 Assembly Level Service Guide

Chapter 1 Performance Tests

Test 4: Channel 2 Power Measurement

11 Repeat steps 8 through 10 for each of the remaining frequency values

listed for Test 4a.

12 Mark Pass or Fail for Test 4a in the Performance Test Record.

Test 4b: Channel 2 22 GHz to 26.5 GHz Power Measurement (–20 dBm)

NOTE This test is appropriate for the Agilent 53151A and 53152A Counters.

1 Use the same test setup as described for Test 4a on page 1-25.

2 With the power output of the Microwave Amplifier still at –20 dBm

(adjust the power output of the Agilent 83650B Synthesizer, if necessary), set the Synthesizer to the first frequency value listed for Test 4b in the Performance Test Record on page 1-32 (22 GHz).

3 Record the actual power reading in the Performance Test Record.

4 Repeat steps 2 and 3 for each of the remaining frequency values listed for

Test 4b.

5 Mark Pass or Fail for Test 4b in the Performance Test Record.

Assembly Level Service Guide 1-27

Chapter 1 Performance Tests

Test 4: Channel 2 Power Measurement

Test 4c: Channel 2 26.5 GHz to 46 GHz Power Measurement (–20 dBm)

NOTE This test is appropriate for the Agilent 53152A Counter only.

1 Use the same test setup as described for Test 4a on page 1-25.

2 With the power output of the Microwave Amplifier still at –20 dBm

(adjust the power output of the Synthesizer, if necessary), set the Synthesizer to the first frequency value listed for Test 4c in the Performance Test Record on page 1-32 (30 GHz).

3 Record the actual power reading in the Performance Test Record.

4 Repeat steps 2 and 3 for each of the remaining frequency values listed

for Test 4c.

5 Mark Pass or Fail for Test 4c in the Performance Test Record.

Test 4d: Channel 2 50 MHz to 20 GHz Power Measurement (0 dBm)

NOTE This test is appropriate for the Agilent 53150A, 53151A, and 53152A

Counters.

1 Use the same test setup as described for Test 4a on page 1-25.

2 Adjust the power output of the Synthesizer so that the power output of the

Microwave Amplifier is 0 dBm.

3 Set the Synthesizer to the first frequency value listed for Test 4d in the

Performance Test Record on page 1-33 (50 MHz).

4 Record the actual power reading in the Performance Test Record.

5 Repeat steps 2 through 4 for each of the remaining frequency values listed

for Test 4d.

6 Mark Pass or Fail for Test 3d in the Performance Test Record.

1-28 Assembly Level Service Guide

Chapter 1 Performance Tests

Test 4: Channel 2 Power Measurement

Test 4e: Channel 2 22 GHz to 26.5 GHz Power Measurement (0 dBm)

NOTE This test is appropriate for the Agilent 53151A and 53152A Counters.

1 Use the same test setup as described for Test 4a on page 1-25.

2 With the power output of the Microwave Amplifier still at 0 dBm

(adjust the power output of the Synthesizer, if necessary), set the Synthesizer to the first frequency value listed for Test 4e in the Performance Test Record on page 1-33 (22 GHz).

3 Record the actual power reading in the Performance Test Record.

4 Repeat steps 2 and 3 for the remaining frequency values listed for Test 4e.

5 Mark Pass or Fail for Test 4e in the Performance Test Record.

Test 4f: Channel 2 30 GHz to 46 GHz Power Measurement (0 dBm)

NOTE This test is appropriate for the Agilent 53152A Counter only.

1 Use the same test setup as described for Test 4a on page 1-25.

2 With the power output of the Microwave Amplifier still at 0 dBm

(adjust the power output of the Synthesizer, if necessary), set the Synthesizer to the first frequency value listed for Test 4f in the Performance Test Record on page 1-33 (30 GHz).

3 Record the actual power reading in the Performance Test Record.

4 Repeat steps 2 and 3 for each of the remaining frequency values listed

for Test 4f.

5 Mark Pass or Fail for Test 4f in the Performance Test Record.

Assembly Level Service Guide 1-29

Chapter 1 Performance Tests

Performance Test Record (Page 1 of 4)

Agilent 53150A/151A/152A Microwave Frequency Counter

Serial Number: Test Performed By: Date: Notes: Pre Calibration Test ❏ Post Calibration Test ❏

Test

Number

Test

Number

Operational Verification Specifications

Power on Self Tests N/A

10 MHz Test 10,000,000 Hz

Run Self Test N/A

10 MHz External Timebase Input Test 2 MHz

Complete

Performance Tests Specifications

1 MHz External Timebase Input Test 2 MHz

2 MHz External Timebase Input Test 2 MHz

5 MHz External Timebase Input Test 2 MHz

10 MHz External Timebase Input Test 2 MHz

Channel 1 Frequency Sensitivity

10 Hz 30 Hz 1 kHz 500 kHz 5 MHz 10 MHz 20 MHz

Repair/Work Order No. Temperature: Relative Humidity:

10 Hz @ 40 mV rms (–14.9 dBm) 30 Hz @ 40 mV rms (–14.9 dBm) 1 kHz @ 25 mV rms (–19.2 dBm)

500 kHz @ 25 mV rms (–19.2 dBm)

5 MHz @ 25 mV rms (–19.2 dBm) 10 MHz @ 25 mV rms (–19.2 dBm) 20 MHz @ 25 mV rms (–19.2 dBm)

Test Results Pass Fail

❏❏

Test Results Pass Fail

❏❏

Channel 1 Frequency Sensitivity

50 MHz 125 MHz

1-30 Assembly Level Service Guide

50 MHz @ 25 mV rms (–19.2 dBm)

125 MHz @ 25 mV rms (–19.2 dBm)

❏❏

Test

Number

Chapter 1 Performance Tests

Performance Test Record (Page 2 of 4)

Complete

Performance Tests Specifications

Channel 2 Frequency Sensitivity

50 MHz 100 MHz 250 MHz 300 MHz 500 MHz 1 GHz

2.5 GHz 5 GHz 10 GHz

12.4 GHz 16 GHz 18 GHz 19 GHz 20 GHz

Channel 2 Frequency Sensitivity

22 GHz 24 GHz

26.5 GHz

Channel 2 Frequency Sensitivity

30 GHz 34 GHz 40 GHz 42 GHz 44 GHz 46 GHz

Test Results Pass Fail

53150A 53151A 53152A ❏❏

–20 dBm

" "

–33 dBm

" " " " " " " "

–29 dBm

–20 dBm

" "

–33 dBm

" " " " " " " "

–29 dBm

–20 dBm

" "

–33 dBm

" " " " " "

–30 dBm

–27 dBm

53150A 53151A 53152A ❏❏

N/A N/A N/A

–25 dBm

" "

–27 dBm

" "

53150A 53151A 53152A ❏❏

N/A N/A N/A N/A N/A N/A

–23 dBm

" "

–17 dBm

" "

Assembly Level Service Guide 1-31

Chapter 1 Performance Tests

Performance Test Record (Page 3 of 4)

Test

Number

Power Measurement (–20 dBm): 53150A 53151A 53152A

50 MHz 500 MHz 1 GHz 5 GHz 10 GHz

12.4 GHz 15 GHz 17 GHz 20 GHz

Power Measurement (–20 dBm): 53150A 53151A 53152A

22 GHz 24 GHz

26.5 GHz

Power Measurement (–20 dBm): 53150A 53151A 53152A

30 GHz 34 GHz 40 GHz 46 GHz

Complete

Performance Tests Specifications

±1.5 dB

" " " " " " " "

N/A N/A N/A

N/A N/A N/A N/A

±1.5 dB

" " " " " " " "

±2.0 dB

" "

N/A N/A N/A N/A

±1.0 dBm

" " " "

±1.5 dB

" " "

±1.5 dB

" "

±2.0 dB

" " "

Test Results Pass Fail

❏❏

1-32 Assembly Level Service Guide

Test

Number

Chapter 1 Performance Tests

Performance Test Record (Page 4 of 4)

Complete

Performance Tests Specifications

Power Measurement (0 dBm): 53150A 53151A 53152A

50 MHz 500 MHz 1 GHz 5 GHz 10 GHz

12.4 GHz 15 GHz 17 GHz 20 GHz

Power Measurement (0 dBm): 53150A 53151A 53152A

22 GHz 24 GHz

26.5 GHz

Power Measurement (0 dBm): 53150A 53151A 53152A

30 GHz 34 GHz 40 GHz 46 GHz

±1.5 dB

" " " " " " " "

N/A N/A N/A

N/A N/A N/A N/A

±1.5 dB

" " " " " " " "

±2.0 dB

" "

N/A N/A N/A N/A

±1.0 dB

" " " "

±1.5 dB

" " "

±1.5 dB

" "

±2.0 dB

" " "

Test Results Pass Fail

❏❏

Assembly Level Service Guide 1-33

Chapter 1 Performance Tests

Performance Test Record (Page 4 of 4)

1-34 Assembly Level Service Guide

Service

Chapter 2 Service

Introduction

This chapter provides service information for your Agilent 53150A/ 151A/152A. It is divided into four major sections:

• Returning the Counter to Agilent Technologies for Service (Page 2-3). This section provides you with step-by-step instructions on how to return the instrument for service.

• Calibration Procedure (Page 2-6). This section provides step-by-step

procedures for calibrating the Agilent 53150A/151A/152A.

• Pre-Troubleshooting Information (Page 2-8). This section provides you with pertinent information such as safety considerations, recommended test equipment, repair and after-service considerations, and assembly identification and location.

• Troubleshooting the Counter (Page 2-13). This section provides you with troubleshooting procedures that isolate the faulty assembly or module. Replacement and recalibration of most modules can only be performed at an authorized Agilent Technologies Service Center.

If the instrument is under warranty, return it to Agilent for service. Refer to “Returning the Counter to Agilent Technologies for Service” on Page 2-3. If you decide to troubleshoot the instrument yourself, refer to the section titled “Troubleshooting the Counter” on Page 2-13.

2-2 Assembly Level Service Guide

Chapter 2 Service

Returning the Counter to Agilent Technologies for Service

Providing Repair Information

Before shipping the Counter to an Agilent office for service or repair, call the nearest Agilent Sales Office to make arrangements. Then, tag and package the Agilent 53150A/151A/152A for shipment.

NOTE ISD (Instrument Service Division) Emergency Response or Express

1 Write the following information on a tag:

• Owner’s name and address

• Counter model number

• Complete serial number

• Description of service required or failure indications

2 Attach the tag to the instrument.

3 Pack the instrument.

If the original packaging materials are available, use the procedure titled “Packing the Counter in the Original Packaging Materials.” If the original packaging materials are not available, you can order new packaging materials from an Agilent Sales Office. The new packaging materials are identical to those used by the factory when packaging new instruments. To use commercially available packaging materials, use the procedure titled “Packing the Counter in Commercially Available Packaging Materials.” Both procedures are on the following page.

Assembly Level Service Guide 2-3

Chapter 2 Service

Returning the Counter to Agilent Technologies for Service

Packing the Counter in the Original Packaging Materials

To prevent shipping damage, it is best to repack the Counter in its original packaging. In any correspondence, refer to the Counter by the model number and the complete serial number.

1 Disconnect the power cord, probes, cables, or other accessories attached to

the instrument.

2 Make sure the folded corrugated spacer (which normally contains the

manuals) is in the box to ensure proper fitting.

3 Make sure one of the polystyrene blocks is in its proper position in the box.

4 Place the instrument, front panel end first, on the polystyrene block.

5 Place the other polystyrene block on top of the rear end of the instrument

to secure it.

6 Do not return the manuals with the instrument. Return an accessory only

when it is a part of the failure symptoms.

7 Seal the shipping container securely.

Packing the Counter in Commercially Available Packaging Materials

If the original factory packaging materials are not available, use the following procedure to pack the Counter in commercially available shipping materials.

1 Wrap the instrument in heavy paper or plastic.

2 Place the instrument in a strong shipping container. Use a double-walled

carton made of at least 350 lb. test material.

3 Protect the control panel with cardboard.

2-4 Assembly Level Service Guide

Chapter 2 Service

Returning the Counter to Agilent Technologies for Service

4 Add a layer of shock-absorbing material that is 3 to 4 inches (70 to

100 mm) thick around all sides of the instrument cushion it and to prevent it from moving within the container

5 Seal the shipping container securely.

6 Mark the shipping container FRAGILE.

Assembly Level Service Guide 2-5

Chapter 2 Service

Calibration Procedure

There is only one calibration procedure that can be performed outside of an Agilent authorized service facility. The following procedure describes how to calibrate the Counter’s timebase.

NOTE The Counter should be powered on for at least 30 minutes prior to

beginning the calibration procedure. This allows the internal temperature of the Counter and its timebase to stabilize.

Equipment Required

10 MHz Reference Standard Non-metallic adjustment tool for slotted screw head Agilent 10503 series Coaxial Cable

1 Connect an Agilent 10503 series coaxial cable from the output of your

10 MHz frequency standard to the Channel 1 input on the Counter’s front panel.

2 If there is a label covering the calibration adjustment access hole,

remove it (see Figure 2-1).

2-6 Assembly Level Service Guide

Chapter 2 Service

Calibration Procedure

Calibration Access Hole

Figure 2-1. Calibrating the Counter

3 Insert a non-metallic slotted adjustment tool through the hole in the

lower-right side of the Counter’s cover and into the slot in the timebase calibration screw.

4 Turn the calibration screw clockwise to increase the Counter’s reading or

counter-clockwise to decrease the reading until the frequency value displayed on the Counter’s front panel is exactly 10,000,000 Hz.

Assembly Level Service Guide 2-7

Chapter 2 Service

Pre-Troubleshooting Information

This section contains the following pertinent troubleshooting information:

• Safety Considerations

• Recommended Test Equipment

• Repair Considerations

• After Service Considerations

• Assembly Identification and Location

Safety Considerations

Although this instrument has been designed in accordance with international safety standards, this guide contains information, cautions, and warnings which must be followed to ensure safe operation and to retain the instrument in a safe condition. Service instructions, and adjustment procedures requiring removal of the instrument cover, are for use by service-trained personnel only. To avoid dangerous electric shock, do not perform any servicing or make any adjustments with the cover removed, unless qualified to do so.

WAR N ING BEFORE APPLYING AC POWER, THE INSTRUMENT AND ALL

PROTECTIVE EARTH TERMINALS, EXTENSION CORDS, AUTO TRANSFORMERS, AND DEVICES CONNECTED TO THE INSTRUMENT SHOULD BE CONNECTED TO A PROTECTIVE EARTH GROUNDED SOCKET.

ANY INTERRUPTION OF THE PROTECTIVE GROUNDING CONDUCTOR INSIDE OR OUTSIDE THE INSTRUMENT OR DISCONNECTION OF THE PROTECTIVE EARTH TERMINAL WILL CAUSE A POTENTIAL SHOCK HAZARD THAT COULD RESULT IN PERSONAL INJURY. INTENTIONAL INTERRUPTION IS PROHIBITED.

Any maintenance and repair of the opened instrument under voltage should be avoided as much as possible and, if necessary, should be carried out only by a skilled person who is aware of the hazards involved (for example, fire and electric shock).

2-8 Assembly Level Service Guide

Chapter 2 Service

Pre-Troubleshooting Information

Recommended Test Equipment

Test equipment recommended for testing and troubleshooting the Agilent 53150A/151A/152A is listed in Chapter 1, “Performance Tests.” Substitute equipment may be used if it meets or exceeds the required characteristics listed in Table 1-1.

Repair Considerations

Electrostatic Discharge

Electronic components and assemblies in the Agilent 53150A/151A/152A can be permanently degraded or damaged by electrostatic discharge. Use the following precautions when servicing the instrument:

1 ENSURE that static-sensitive devices or assemblies are serviced at

static-safe work stations providing proper grounding for service personnel.

2 ENSURE that static-sensitive devices or assemblies are stored in static

shielding bags or containers.

3 DO NOT wear clothing subject to static-charge buildup, such as wool

or synthetic materials.

4 DO NOT handle components or assemblies in carpeted areas.

5 DO NOT remove an assembly or component from its static shielding

protection until you are ready to install it.

6 AVOID touching component leads (handle by packaging only).

Assembly Level Service Guide 2-9

Chapter 2 Service

Pre-Troubleshooting Information

Surface Mount Repair

None of the assemblies in the Counter that use surface-mount components can be repaired outside of authorized Agilent Service Centers. Any attempt to repair these assemblies voids the Agilent factory warranty and makes the assemblies ineligible for return credit.

Disassembly and Reassembly Specifics

Refer to Chapter 3 of this guide, “Replacing Assemblies,” for complete disassembly and reassembly instructions, and Chapter 4, “Replaceable Parts,” for an exploded view of the instrument’s parts.

After Service Considerations

Product Safety Checks

The following safety checks must be performed after any troubleshooting and repair procedures have been completed to ensure the safe operation of the instrument.

WAR N ING THE RESISTANCE CHECKS DESCRIBED IN THE FOLLOWING TEXT

REQUIRE THAT THE POWER CORD BE CONNECTED TO THE INSTRUMENT AND THAT AC POWER BE DISCONNECTED. BE SURE THAT THE POWER CORD IS NOT CONNECTED TO AN AC POWER SOURCE BEFORE PERFORMING ANY SAFETY CHECKS.

1 VISUAL INSPECTION. Visually inspect the interior of the instrument for

any signs of abnormal internally generated heat, such as discolored printed circuit boards or components, damaged insulation, or evidence of arcing. Determine and remedy the cause of any such condition.

2 GROUND CONTINUITY TEST. Plug the power cord into the rear- panel

power receptacle. (DO NOT connect the instrument to AC power at this time.) Using a suitable ohmmeter, check resistance from the instrument's metallic connection (such as the rear panel or BNC ground collar) to the ground pin on the power cord plug. The reading must be less than 1Ω. Flex the power cord while making this measurement to determine whether intermittent discontinuities exist.

2-10 Assembly Level Service Guide

Chapter 2 Service

Pre-Troubleshooting Information

3 Check any indicated front- or rear-panel ground terminals marked,

using the above procedure.

4 INSULATION RESISTANCE TEST. Tie the line and neutral pins of the

power cord plug together. Measure the resistance from the instrument enclosure (chassis) to the line and neutral pins of the power cord plug. The minimum acceptable resistance is 2 MΩ. Replace any component which results in a failure.

Product Performance Checks

After replacement of any functional assembly, perform the operational verification test in Chapter 1 of this guide, “Performance Tests.”

Assembly Identification and Location

The assembly number, name, and Agilent part number for each of the Agilent 53150A, 53151A, and 53152A assemblies are listed in Table 2-1. Figure 2-2 illustrates the replaceable assemblies in the Agilent 53150A/ 151A/152A.

Table 2-1. Agilent 53150A/151A/152A Assembly Identification

Assembly Name Agilent Part No.

A1 Adapter (53152A only) 53152-80001

A2 Cooling Fan Assembly 53150-80012

A3 Standby Power Switch Assembly 53150-80013

A4 Battery Housing Assembly * 53150-00002

A5 DC/DC Converter PCB * 53150-60004

A6 Battery * 53150-80010

A7 Battery Sled Assembly * 53150-00004

A8 Battery Cover Assembly 53150-00003

A9 Rear Panel Assembly —

A10 Power Entry Module Assembly 53150-40007

A11 Power Supply Assembly 0950-3299

A12 Rear Panel Power Switch Assembly 53150-60220

* With Option 002 (Battery Option) only.

Assembly Level Service Guide 2-11

Chapter 2 Service

Pre-Troubleshooting Information

A11

A10

A12

Figure 2-2. Replaceable Assembly Locations — Top Internal View

2-12 Assembly Level Service Guide

Chapter 2 Service

Troubleshooting the Counter

Power Supply Check

WAR N ING HAZARDOUS VOLTAGES ARE PRESENT ON THE POWER SUPPLY

ASSEMBLY. ONLY TRAINED AND QUALIFIED SERVICE PERSONNEL SHOULD PERFORM THE FOLLOWING PROCEDURE.

1 Remove the power cord from the back of the instrument.

2 Remove the cover as described in Chapter 3.

NOTE The DC Power Supply Assembly is fused for safety reasons. It must be

assumed that, if the fuses are blown, the power supply has probably suffered damage and has therefore become unreliable. If the power supply fails, it must be replaced, even if the fuse in the power supply appears to be all that has failed.

3 Connect the Counter to the power source.

4 Connect the negative lead of a voltmeter to the chassis and measure each

of the voltages listed in Table 2-2 on Power Supply connectors TB1 and TB2 (see Figure 2-3).

Pin 8

Neutral

TB1 (AC In)

Line

TB2 (DC Out)

Pin 1

Approx. location of R23

Figure 2-3. A4 DC Power Supply Test-Point Locations

Assembly Level Service Guide 2-13

Chapter 2 Service

Troubleshooting the Counter

Table 2-2 lists A4 Power Supply’s input and output voltages, the corresponding wire color for each input and output, and the tolerances specified for these voltages.

Table 2-2. A4 Power Supply Inputs and Outputs

Input/Output Voltage Connector and Pin Designation Wire Color Tolerance

AC-input (neutral) 0 VAC* TB1, pin N blue —

AC-input (line in) 85 - 264 VAC* TB1, pin L brown —

–15.0 VDC @ 0.7 A max. TB2, pin 1 lavender ±3%

0.0 VDC (ground for –15 VDC) TB2, pin 2 brown —

N/A (unused) TB2, pin position 3 (no pin) N/A —

N/A (unused) TB2, pin 4

+15.0 VDC @ 2 A max. TB2, pin 5 blue ±5%

0.0 VDC (ground for +15 VDC) TB2, pin 6 brown —

+5.0 VDC @ 5A max. TP 10 (bottom of motherboard) red ±1%

0.0 VDC (ground for +5 VDC) TB2, pin 8 black —

* AC-input values are referenced to chassis ground.

Adjusting the +5 VDC Output

The +5 VDC output of the power supply is adjustable. If this voltage is found to be outside of the tolerance range listed in Table 2-2, it can be adjusted using R23, which is visible on the top surface of the power supply’s circuit board. When adjusting the +5 VDC output, use a non-metallic or insulated adjustment tool.

2-14 Assembly Level Service Guide

Chapter 2 Service

Troubleshooting the Counter

Self-Test

The Counter performs a Self-Test procedure when it is powered on. The Self-Test can also be invoked from the Counter’s Menu.

Running the Self Test

1 Disconnect all cables connected to the Counter’s front and rear signal

connectors.

2 Turn on the Main ~ Power switch on the Counter’s rear panel.

3 Press and release the Power button on the front panel.

4 Observe the front-panel display and note any error messages displayed.

5 When CH 2 NO SIGNAL is displayed, press and release the Shift key,

and then press and release the Menu key.

6 Press the up-arrow key or the down-arrow key repeatedly until DO SELF

TEST is displayed, and then press and release the Enter key.

7 Observe the front-panel display and note any error messages displayed.

Assembly Level Service Guide 2-15

Chapter 2 Service

Troubleshooting the Counter

Self Test Error Messages

Table 2-3 lists and describes messages that are generated by the Counter during Self-Test to indicate whether a component passed or failed its test. These messages are sent via the RS-232 serial output only—they do not appear on the Counter’s front-panel display.

Table 2-3. Self-Test Messages

Message Description

ROM TEST FAIL ROM TEST OK

RAM DATA LINES OK RAM DATA ERROR RAM ADDR LINES OK RAM ADDR ERROR RAM TEST OK

EEPROM FAIL - CONFIGURATION DATA

ROM FAIL; Computed checkbyte does not match the value stored in EEPROM.

EEPROM FAIL - CONFIGURATION DATA; Needs to be (re)initialized.

EEPROM FAIL - POWER CAL DATA; Using default data

EEPROM FAIL - SAVED SETTINGS; Using default data

EEPROM FAIL - SAVED SETTINGS; Invalid EEPROM SAV n Data.

GPIB FAIL; Conf. Test The GPIB hardware failed its confidence test.

ROM failed read test. ROM passed read test.

RAM data lines passed test. RAM data lines failed test. RAM address lines passed test. RAM address lines failed test. RAM tests completed with no errors detected.

The configuration data saved in EEPROM memory is defective.

The checksum of the ROM data does not match the value stored in EEPROM.

The EEPROM org code does not verify with current revision of ROM code.

The checksum of the EEPROM powercalibration table is bad. Factory default calibration data will be used.

The checksum of the user settings stored in EEPROM is bad. Factory default settings will be used.

The checksum of one set of user settings (1 – 9) stored in EEPROM is bad.

2-16 Assembly Level Service Guide

Chapter 2 Service

Troubleshooting the Counter

Tables 2-4 and 2-5 list and describe the messages that are generated by the Counter during Self-Test or during operation to indicate that a problem has been detected. These messages are displayed on the Counter’s front-panel display and are also sent via the RS-232 serial output (in many cases, the exact message text that is displayed on the front panel is a condensed form of the message that is sent via RS-232).

Table 2-4. Front Panel Display Error Messages

Message Description

12V FAIL The +12 VDC output from the power supply is not within specifications.

–12V FAIL The –12 VDC output from the power supply is not within specifications.

–5V FAIL The –5 VDC output from the power supply is not within specifications.

ADC FAIL Failure detected in the ADC.

PATH FA I L Failure detected in the Channel 1 signal path.

THRS FAIL Failure detected in the Channel 1 threshold circuit.

THRS FAIL Failure detected in the Channel 2 RF threshold circuit.

THRS THRU Failure detected in the Channel 2 through-path threshold circuit.

THRS HET Failure detected in the Channel 2 heterodyne-path threshold circuit.

EEP WRT FAIL Failure detected while writing to EEPROM.

FPANEL FAIL The front panel or its interconnecting cable is defective or not properly connected.

FPGA FAIL Failure detected in the FPGA (Field Programmable Gate Array).

GPIB FAIL Failure detected in the GPIB hardware.

HET PATH FAIL Failure detected in the heterodyne-path circuit.

IIC FAIL An attempt to write to the LCD display failed.

INSTCFG FAIL The instrument’s configuration data is missing or has become corrupted.

OVERTEMP The Counter’s internal temperature is above the acceptable limit.

PWR CAL FAIL The instrument’s power-calibration data is missing or corrupted.

PWR CKT FAIL Failure detected in the Channel 2 power-measurement circuit.

RAM FAIL Failure detected in RAM.

ROM FAIL Failure detected in ROM.

SAV SET FAIL One or more of the sets of user settings is missing or is corrupted.

SERVICE FAIL The instrument’s service data is missing or has become corrupted.

THRU FAIL Failure detected in the through-path circuit of Channel 2.

VCO/CNT FAIL Failure detected in the VCO or the Count Chain.

Assembly Level Service Guide 2-17

Chapter 2 Service

Troubleshooting the Counter

Table 2-5. RS-232 Error Messages

Message Description

12V FAIL The +12 VDC output from the power supply is not within specifications.

–12V FAIL The –12 VDC output from the power supply is not within specifications.

–5V FAIL The –5 VDC output from the power supply is not within specifications.

ADC FAIL Failure detected in the ADC.

B1 SIGNAL PATH FAIL Failure detected in the Channel 1 signal path.

B1 THRESHOLD FAIL Failure detected in the Channel 1 threshold circuit.

B2 RF THRESHOLD FAIL Failure detected in the Channel 2 RF threshold circuit.

B2 THROUGH-PATH THRESHOLD FAIL

B2 HETERODYNE PATH THRESHOLD FAIL

EEPROM FAIL - WRITE Failure detected while writing to EEPROM.

FRONT PANEL FAIL The front panel or its interconnecting cable are defective or not properly connected.

FPGA FAIL Failure detected in the FPGA (Field Programmable Gate Array).

GPIB FAIL Failure detected in the GPIB hardware.

HETERODYNE PATH FA IL

IIC FAIL An attempt to write to the LCD display failed.

INSTCFG FAIL The instrument’s configuration data is missing or corrupted.

OVER TEMPERATURE The Counter’s internal temperature is above the limit.

PWR CAL FAIL The instrument’s power-calibration data is missing or corrupted.

POWER METER FAIL Failure detected in the Channel 2 power-measurement circuit.

RAM FAIL Failure detected in RAM.

ROM FAIL Failure detected in ROM.

SAV SET FAIL One or more of the sets of user settings is missing or corrupted.

SERVICE FAIL The instrument’s service data is missing or corrupted.

THRU PATH FAIL Failure detected in the through-path circuit of Channel 2.

VCO/COUNT CHAIN FAIL Failure detected in the VCO or the Count Chain.

Failure detected in the Channel 2 through-path threshold circuit.

Failure detected in the Channel 2 heterodyne-path threshold circuit.

Failure detected in the heterodyne-path circuit.

2-18 Assembly Level Service Guide

Replacing Assemblies

Disassembly and Reassembly

Chapter 3 Replacing Assemblies

Introduction

This chapter provides instructions for removing major assemblies in the Agilent 53150A/151A/152A. To install an assembly, apply the removal instructions in reverse.

The following disassembly and repair procedures are provided:

• Removing the Bumpers pg. 3-4

• Removing the Handle and Handle Mounts pg. 3-5

• Removing the Rear Bezel pg. 3-6

• Removing the Shroud pg. 3-8

• Removing the Rear Panel Assembly pg. 3-12

• Removing the Cooling Fan pg. 3-15

• Replacing the Power Supply pg. 3-16

WAR N ING HAZARDOUS VOLTAGES ARE PRESENT ON THE POWER SUPPLY

ASSEMBLY. DISCONNECT THE COUNTER FROM THE POWER SOURCE, AND WAIT AT LEAST SIX MINUTES BEFORE WORKING INSIDE THE INSTRUMENT.

CAUTION Do not replace assemblies when the Counter is operating to prevent

damage to components.

NOTE Unless otherwise stated, directional referents in the procedures in this

chapter are accurate when viewing the Counter from the front.

Part numbers for all replaceable parts and assemblies are provided in Chapter 5, “Replaceable Parts.”

3-2 Assembly Level Service Guide

Chapter 3 Replacing Assemblies

Tools Required

The following tools are required for the removal/replacement procedures in this chapter:

• #1 Phillips screwdriver

• #2 Phillips screwdriver

• TORX

• 1/4-inch open-end or box wrench

• 1/4-inch nut driver

• 5/16-inch nut driver

• Needle-nose pliers

15 (T15) hand screwdriver

Do This First

Perform the following steps before beginning any of the removal and replacement procedures:

1 If the Counter is on, press and release the POWER button on the front

panel, and then set the Main ~ Power switch on the rear panel to “0” (off).

2 Disconnect the AC power cord from the AC input socket on the rear panel.

3 If the Counter has the Battery Option (002) installed, remove the battery

sled, and disconnect any DC input cable from the EXT DC connector on the rear panel.

CAUTION While most of the hardware used in the Counter is SAE, the four TORX

screws that attach the handle mounts to the Counter are metric. To avoid damage to the threaded holes in the chassis that handle mount screws fit in, be sure to use the correct screws.

Assembly Level Service Guide 3-3

Chapter 3 Replacing Assemblies

Removing the Bumpers

Use the following procedure to remove the front and rear bumpers:

1 To remove the front bumper, lift the center of the top of the bumper

upward, stretch a corner of the bumper diagonally, then slide it off the front of the Counter.

OPTIONS

Figure 3-1. Removing the Bumpers

2 Use the equivalent procedure for the rear bumper.

NOTE The bumpers can be used to support and protect the Counter after the

shroud is removed. Place both bumpers on their inner edges on your work surface, and then place the Counter on top of them. The rear bumper can also serve as a holder for screws and other hardware temporarily removed from the Counter.

3-4 Assembly Level Service Guide

Chapter 3 Replacing Assemblies

Removing the Handle and Handle Mounts

Use the following procedure to remove the carrying handle and handle mounts:

1 Rotate the handle to the vertical position above the Counter, pull the ends

of the handle outward at the mounts to detach it, and set it aside.

Figure 3-2. Removing the Handle

2 Remove the front bumper (see “Removing the Bumpers” on page 3-4).

3 Use a T15 TORX screwdriver to remove the two screws that attach each of

the handle mounts to the Counter, and remove the mounts.

TORX Screws

Counter

Handle Mount

TORX Screws

Handle Mount

Figure 3-3. Removing the Handle Mounts

NOTE When reattaching the handle mounts, limit the torque on the TORX

screws to 4 to 5 inch-pounds.

Assembly Level Service Guide 3-5

Chapter 3 Replacing Assemblies

In or Out

Removing the Rear Bezel

Use the following procedure to remove the rear bezel:

1 Remove the rear bumper (see “Removing the Bumpers” on page 3-4).

NOTE The rear bumper can be used as a holder for hardware and other small

parts while they are temporarily removed from the Counter.

2 Use a #2 Phillips screwdriver to remove the two 6-32 pan-head machine

screws that attach the rear bezel to the rear panel of the Counter (see Figure 3-4).

Made in U.S.A.

with domestic and foreign content

OPTIONS

001 Oven Time Base

Main ~ Power

Reference 10 MHz

11 TO 18 VDC

EXT DC

Auxillary

In or Out

RS-232

002 Battery

WARNING:

To avold electric shock, do not remove covers.

No user-serviceable parts inside. Refer all servicing to qualified personnel. This unit must be earth grounded.

AC POWER 100 – 130 VAC, 50/60/400 Hz 75 VA 220 – 240 VAC, 50/60 Hz 75 VA 250 V

ISM 1-A

FUSE

1.0 A T

Figure 3-4. Rear Bezel Mounting Screws

3 Use a #1 Phillips screwdriver to remove the three 4-40 x 3/16-inch

countersunk shroud screws on the top of the Counter near the back edge of the shroud (see Figure 3-5).

3-6 Assembly Level Service Guide

Chapter 3 Replacing Assemblies

Removing the Rear Bezel

Shroud Screws

. A .

S .

ont

ign

n i

estic

m i

dom

ith

y r

e t

e i

.0 A

0 V

5 V

0 H

i h T

/60/40

0 H

C, 50

0/6

, 5

30 V

r e f

0 – 1

40 V

– 2

w o P

~ in a

V 8 1

T 1 1

-2 S

C D T X

Figure 3-5. Top Rear Shroud Screws

4 Turn the Counter upside-down, and remove the three 4-40 x 3/16-inch

countersunk shroud screws on the bottom of the Counter near the back edge of the shroud (see Figure 3-6).

Shroud Screws

E X

T DC

S-232

11 TO

18 V

a i n

~ P o

– 2

0 V

–

f e

, 5

1 0

/60

, 5

0/6

z 7

T h

i s

/40

z 7

l l

5 V

0 V

A T

r i e

n e

2 B

attery

1 O

ven Tim

OPTIONS

w i

d o

e Base

e s

f o r

c o

n t e n

I S

Figure 3-6. Bottom Rear Shroud Screws

5 Carefully work the rear bezel out of the back end of the shroud by

alternately pulling opposite corners of the bezel away from the Counter a small amount at a time. Do not use tools to pry the bezel out of the shroud, since this could damage it.

Assembly Level Service Guide 3-7

Chapter 3 Replacing Assemblies

Removing the Shroud

Use the following procedure to remove the shroud:

WAR N ING WHEN THE SHROUD IS REMOVED FROM THE COUNTER,

DANGEROUS LINE VOLTAGES THAT CAN CAUSE SERIOUS INJURY ARE EXPOSED. ALWAYS DISCONNECT THE POWER CORD BEFORE REMOVING THE SHROUD.

1 Remove the front and rear bumpers (see “Removing the Bumpers” on

page 3-4).

NOTE The bumpers can be used to support and protect the Counter after the

2 Remove the handle and the handle mounts (see “Removing the Handle

and Handle Mounts” on page 3-5).

3 Remove the rear bezel (see “Removing the Rear Bezel” on page 3-6).

4 Use a #1 Phillips screwdriver to remove the three 4-40 x 3/16-inch

countersunk shroud screws from the top of the Counter near the front edge of the shroud (see Figure 3-7).

3-8 Assembly Level Service Guide

Chapter 3 Replacing Assemblies

Removing the Shroud

Shroud Screws

-A

M S I

n e t

o c n

ig e

n i

fo d

ith

e t

a 0 0

B 2

e n

p n i

e i

e l

d o

WARNING

t l l

s i

0 1

–

e w o

P ~ n i

D V

8 1 O

T 1 1

2 3

D T X E

Figure 3-7. Top Front Shroud Screws

5 Turn the Counter upside-down, and remove the three 4-40 x 3/16-inch

countersunk shroud screws on the bottom of the Counter near the front edge of the shroud (see Figure 3-8).

Shroud Screws

E X T

2 3

1 1 T

O 1

8 V D

Main ~ Power

220 – 240 VAC, 50/60 Hz 75 VA

O u

100 – 130 VAC, 50/60/400 Hz 75 VA

Reference 10 MHz o r

AC POWER

I n

This unit must be earth grounded.

Auxillary

Refer all servicing to qualified personnel. No user-serviceable parts inside. do not remove covers. To avold electric shock,

250 V

1.0 A T

FUSE

0 0 2

0 0

1 t te

i c

f o

e i g

c o

t e

I S

Figure 3-8. Bottom Front Shroud Screws

Assembly Level Service Guide 3-9

Chapter 3 Replacing Assemblies

250 V

EXT DC

RS-232

1.0 A T

Removing the Shroud

6 With the Counter resting upside-down on your work surface, grip the front

edge of the shroud in the cutout of the front bezel with the fingers of one hand, and push the Counter’s rear panel toward the front of the shroud with your other hand. Reduce the amount of pressure you apply to the rear panel when the shroud begins to slide off the Counter, and carefully remove the shroud the rest of the way (see Figure 3-9).

E X T

-2 3

11 T O

a i

o w e

220 – 240 VAC, 50/60 Hz 75 VA

r O ut

100 – 130 VAC, 50/60/400 Hz 75 VA

f e r

AC POWER

e n

c e 1

M H z

This unit must be earth grounded.

efer all servicing to qualified personnel.

x il

No user-serviceable parts inside.

a r y

do not remove covers. To avold electric shock,

250 V

1.0 A T

FUSE

I N

0 2 B

t t e

r y

i t h

Made in U.S.A.

e s

d f o

i g n

c o

n t e n

-A

Figure 3-9. Removing the Shroud

3-10 Assembly Level Service Guide

Chapter 3 Replacing Assemblies

Removing the Front Bezel

Use the following procedure to remove the front bezel:

1 Remove the shroud hardware and slide the shroud back far enough to

fully expose the front bezel, or remove the shroud completely (see “Removing the Shroud” on page 3-8).

2 Remove the four 4-40 x 3/16-inch self-locking flathead machine screws

that attach the front bezel to the front panel (two on top and two on the bottom as shown in Figure 3-10).

Front

Bezel

Screws

Front Bezel Screws

Figure 3-10. Front Bezel Screws

3 Carefully slide the front bezel off the front panel.

CAUTION When reattaching the front bezel to the front-panel assembly, do not

tighten the screws excessively to prevent damage to the bezel.

Assembly Level Service Guide 3-11

Chapter 3 Replacing Assemblies

Removing the Rear Panel Assembly

Use the following procedure to remove the rear panel assembly:

1 Remove the shroud (see “Removing the Shroud” on page 3-8).

2 If the Battery Option is not installed, remove the four 4-40 self-locking hex

nuts that attach the battery opening cover to the rear panel (these nuts are accessible from inside the chassis). Then, remove the battery opening cover, and skip to step 5.

3 If the Battery Option is installed, remove the battery sled from the

Counter (for instructions on removing the battery sled, see Appendix C of the Agilent 53150A/151A/152A Operating Guide).

4 If the Battery Option is installed, remove the four 4-40 x 3/16-inch

self-locking flathead machine screws that attach the rear panel assembly to the Battery Option chassis as shown in Figure 3-11 (two screws on each

side of the opening, and two more screws at the bottom of the opening).

Rear Panel Screws

Main ~ Power

Reference 10 MHz

11 TO 18 VDC

EXT DC

Auxillary

In or Out

RS-232

Battery

Option

Screws

Rear Panel Screws

Figure 3-11. Rear Panel Assembly Screws

5 Remove the six 4-40 x 3/16-inch self-locking flathead machine screws that

attach the rear panel assembly to the chassis (see Figure 3-11).

3-12 Assembly Level Service Guide

Chapter 3 Replacing Assemblies

Removing the Rear Panel Assembly

NOTE The screw in the lower-left corner of the rear panel assembly (as viewed

from the rear of the Counter) may be covered by the serial-number sticker. If it is, carefully cut away the lower-left corner of the sticker to expose the screw head.

6 Disconnect the seven-wire cable that runs between the connector at the

back end of the power supply (TB2) and connector PMAIN1 on the main board to provide better access to the cables that are attached to the back panel assembly.

7 Disconnect the GPIB ribbon cable from connector JP3 on the main board,

and disengage the ribbon cable from the ribbon-cable clamps that are attached to the power supply and the inside of the left wall of the chassis. Position this cable so that it cannot catch on any other cables or other components of the Counter.

8 Disconnect the external-reference input/output cable (coaxial) from

connector J8 on the main board. J8 is directly under the back edge of the power supply near the chassis wall.

9 A two-wire AC-input cable (brown and blue wires) runs between the Main

~ Power switch on the rear-panel assembly and the connector that is

accessible through the cutout in the right-front corner of the power supply enclosure (TB1). Disconnect this cable from the power supply.

NOTE When reinstalling the Rear Panel Assembly, be sure to route the two-wire

AC-input cable (brown and blue wires) underneath the power supply.

10 If the Battery Option is installed, there is a two-wire cable (brown and

white wires) that runs between the Main ~ Power switch on the rear panel assembly and connector J3 on the Battery Option circuit board (J3 is the third connector from the back edge of the board). Disconnect this cable from J3 on the Battery Option circuit board.

Assembly Level Service Guide 3-13

Chapter 3 Replacing Assemblies

Removing the Rear Panel Assembly

11 Use a 5/16-inch spin tight to remove the self-locking hex nut that attaches

the rear panel assembly grounding wire (green/yellow) to the right wall of the chassis. Slide the grounding lug off the welded stud on the chassis wall, and thread the lock nut back onto the stud a few turns until it is finger-tight.

WAR N ING AN ELECTRICAL SHOCK HAZARD EXISTS IF THE COUNTER IS

OPERATED WITH THE REAR PANEL ASSEMBLY GROUNDING WIRE NOT PROPERLY CONNECTED TO THE CHASSIS. TO PREVENT SERIOUS INJURY AND/OR DAMAGE TO THE EQUIPMENT, NEVER OPERATE THE COUNTER UNLESS THIS GROUND WIRE IS SECURELY CONNECTED TO THE CHASSIS WALL AND THE REAR PANEL ASSEMBLY.

12 Extract the ends of all of the cables that you disconnected in Steps 7

through 9 from under the power supply, so that they are completely exposed and cannot catch on other cables and components when you remove the rear panel assembly.

13 Carefully pull the rear panel assembly away from the back end of the

chassis. Guide the cables that remain attached to the rear panel assembly as you remove it to prevent them from catching on other cables or other components of the Counter.

CAUTION When reinstalling the Rear Panel Assembly, position it carefully to avoid

damage to the power LED, the serial-port connector (RJ-12), and the main board. If these components are not correctly aligned with the openings in the back panel, they may be damaged.

3-14 Assembly Level Service Guide

Chapter 3 Replacing Assemblies

Removing the Cooling Fan

Use the following procedure to remove the cooling fan:

1 Remove the shroud (see “Removing the Shroud” on page 3-8).

2 Disconnect the two-wire cooling-fan power cable (blue and red wires) from

J16 on the main board. J16 is the connector that is closest to the rear panel assembly near the right chassis wall and behind the power supply.

3 Open the two cable clamps that are attached to the floor of the chassis

immediately behind the front panel assembly, and remove the cooling-fan cable from the cable clamps.

4 Extract the end of the cooling-fan cable from under the power supply by

pulling it toward the front of the Counter with one hand while guiding the connector with your other hand.

5 Use a #1 Phillips screwdriver and a 1/4-inch wrench or spin tight to

remove the four 4-40 x 1-inch panhead machine screws and 1/4-inch self-locking hex nuts that attach the cooling fan to the chassis (see Figure 3-12).

Figure 3-12. Cooling Fan Screws

6 While removing the cooling fan from the chassis, guide the cable to be sure

it does not catch on other cables or other components of the Counter.

Assembly Level Service Guide 3-15

Chapter 3 Replacing Assemblies

Replacing the Power Supply

Use the following procedure to replace the power-supply circuit board:

1 Remove the shroud (see “Removing the Shroud” on page 3-8).

2 Disconnect the two power-supply connectors (one at the front and one at

the rear of the power supply).

3 Use a #1 Phillips screwdriver to remove the two pan-head screws and the

two star washers that fasten the perforated power-supply cover to the power-supply chassis. The screws are accessible through the rectangular cutout in the side of the Counter’s chassis.

4 Use a small flat-bladed screwdriver to pry the power-supply cover toward

the opening in the chassis to loosen it from the chassis.

5 Remove the power-supply cover by sliding it through the rectangular

opening in the side of the counter’s chassis.

6 Use a

7 Remove the two flat-head screws that are on both sides of the power-

8 Lift the circuit board up until it clears the power-supply cover mounting

9 Disassemble the replacement power supply in the same manner as

10 Insert the circuit board from the new power supply into position in the

¼-inch nut driver to remove the two nuts used to fasten the circuit

board to the power-supply chassis. You may have to hold the screws to prevent them from turning while removing the nuts. Do not discard the nuts, lock washers,

supply nameplate.

tabs, and remove it from the chassis. Discard the defective circuit board.

described in steps 3 through 8.

power-supply chassis inside the Counter.

3-16 Assembly Level Service Guide

¼-inch spacers, and 5/8-inch flat-head screws.

Chapter 3 Replacing Assemblies

Replacing the Power Supply

11 Insert the two screws removed in step 7 into the holes on both sides of the

power-supply nameplate. Do not tighten these screws at this time.

12 Use a pair of needle-nose pliers to position one of the

removed in step 6 between the circuit board and the power-supply chassis, and align the spacer with the mounting holes in the circuit board and the chassis.

13 Insert one of the 5/8-inch, flat-head screws removed in step 6 up through

the circuit-board mounting hole in the bottom of the power-supply chassis, through the spacer, and through the hole in the circuit board.

14 Place a lockwasher over the screw on top of the circuit board.

15 Thread a nut onto the screw, but do not tighten it fully at this time.

16 Repeat steps 12 through 15 for the other circuit-board mounting hole.

17 Tighten the two screws next to the power-supply nameplate.

18 Tighten the nuts on the circuit-board mounting screws.

19 Insert the power-supply cover through the rectangular hole in the side of

the counter’s chassis, and position in properly on the power-supply.

20 Insert the two screws that fasten the power-supply cover to the chassis

and tighten them.

¼-inch spacers

21 Reconnect the two power-supply connectors and the front and rear ends of

the power supply.

22 Turn the Counter on, and perform the “Power Supply Check” procedure on

page 2-13.

23 If necessary, adjust the +5 VDC output of the power supply using the

procedure titled “Adjusting the +5 VDC Output” on page 2-14.

24 Reassemble the Counter.

Assembly Level Service Guide 3-17

Chapter 3 Replacing Assemblies

Replacing the Power Supply

3-18 Assembly Level Service Guide

Replaceable Parts

Chapter 4 Replaceable Parts

Introduction

This chapter contains parts-ordering information for the Agilent 53150A/151A/152A Counter. Table 4-1 lists the reference designations used in the parts list and throughout this guide, Table 4-2 lists all replaceable assemblies and parts. Figure 4-1 is an exploded view of the Agilent 53150A/151A/152A’s internal parts, Figure 4-2 is an exploded view of the cabinet and other external parts, and Figure 4-3 is a top view of the chassis with the shroud removed. These illustrations are provided to help you locate and identify parts.

Replaceable Parts

Table 4-2 contains a list of replaceable parts that is organized as follows:

1. Electrical assemblies in alphanumeric order by reference designation.

2. Chassis-mounted electrical parts in alphanumeric order by reference designation.

3. Chassis-mounted mechanical parts in alphanumeric order by reference designation.

The information given for each part consists of the following:

1. Reference designation.

2. Agilent part number.

3. The quantity (QTY) of the part used in the instrument (fieldreplaceable items only).

4. Description of the part.

5. Typical manufacturer's part number for the part (when available).

4-2 Assembly Level Service Guide

Chapter 4 Replaceable Parts

How To Order A Part

Agilent Technologies wants to keep your parts ordering process as simple and efficient as possible. To order parts, perform the following steps:

1 Identify the part and the quantity you need.

2 Determine the ordering method to be used, and contact Agilent.

If the part you need is not identified in the guide, you can call Agilent for assistance (see the following section titled “Contacting Agilent”). Please have the following information available when you contact Agilent:

• Instrument Model Number (example, “Agilent 53151A”).

• Complete instrument Serial Number (example, “1234A56789”).

Information about where to find the serial number is provided in the Preface portion of this guide in the section titled “How to Use This Guide.”

• Description of the part(s) and its use.

• Quantity of the part(s) required.

Assembly Level Service Guide 4-3

Chapter 4 Replaceable Parts

How To Order A Part

Contacting Agilent Technologies

Depending on where you are in the world, there are one or more ways to obtain parts or parts information from Agilent Technologies.

• Outside the United States, contact your local Agilent Technologies sales office.

• Within the United States, we encourage you to order replacement parts or request parts information directly by telephone or mail from Agilent using the telephone numbers or address listed on the next page. (You can also contact your local Agilent sales office. Agilent sales offices are listed near the back of this guide.)

By Telephone:

– For Parts Ordering, use our toll-free number, (800) 227-8164,

Monday through Friday (except Holidays), 6 a.m. to 5 p.m. (Pacific Time).

– For Parts Identification Assistance, call us at (916) 783-0804.

Our Parts Identification hours are from 6 a.m. to 3 p.m. (Pacific Time) on Monday through Thursday and from 6 a.m. to 2 p.m. (Pacific Time) on Friday.

For Mail Correspondence, please use the address below:

Agilent Technologies, Inc. P.O. Box 1145 Roseville, CA 95661-1145

4-4 Assembly Level Service Guide

Chapter 4 Replaceable Parts

Parts Identification

To identify the part(s) you need, refer to the exploded views in Figures 4-1 and 4-2 and the top view of the chassis in Figure 4-3.

When ordering from Agilent Technologies, the important numbers to note from the Parts List are the Agilent Part Number, the part-number check digit (in the “CD” column), and the quantity of the part(s) you need.

Reference Designations

Table 4-1 lists the reference designations used in the parts lists.

Table 4-1. Reference Designations

assembly

hardware

electrical connector (stationary portion); jack

miscellaneous mechanical part

electrical connector (movable portion); plug

P/0

S T

part of

switch

transformer

test point

integrated circuit; microcircuit

cable; transmission path; wire

Cabinet Parts and Hardware

To locate and identify cabinet and external parts and mounting hardware, refer to Figure 4-2 (internal parts and mounting hardware are shown in Figure 4-1). These figures provide different views of the instrument, with the parts identified by reference designations; the reference designations correspond with the ones in Table 4-2.

Accessories and Miscellaneous Items

Table 4-3 lists all of the accessories available for the Counter and also lists some other miscellaneous items, such as power cords, rack mounts, and manuals.

Assembly Level Service Guide 4-5

Chapter 4 Replaceable Parts

Parts Identification

H3, H4

MP1

H12

H11

H10

H13

H10

A11

A10

Figure 4-1. Agilent 53150A/151A/152A Exploded View — Internal Parts

4-6 Assembly Level Service Guide

A12

Chapter 4 Replaceable Parts

Parts Identification

MP6

MP5

H14

H15

MP7

MP8

H16

MP3

MP2

Figure 4-2. Agilent 53150A/151A/152A Exploded View — Cabinet and External Parts

H15

Assembly Level Service Guide 4-7

MP4

MP5

H15

H14

P/O A10

W8 W7 W6

Chapter 4 Replaceable Parts

Parts Identification

P/O A10

P/O A10 P/O A10

A11

W5 W4

Figure 4-3. Agilent 53150A/151A/152A Top View

4-8 Assembly Level Service Guide

P/O A10

Chapter 4 Replaceable Parts

Parts Identification

Table 4-2. Agilent 53150A/151A/152A Replaceable Parts

Reference

Designation

A1 53152-80001 1 ADAPTER, 2.92 mm FEMALE

A2 53150-80012 1 FAN, COOLING 2011151-01

A3 53150-80013 1 SWITCH ASSY., FRONT PANEL POWER 2010306-01

A4 53150-00002 1 HOUSING ASSY., BATTERY

A5 53150-60004 1 DC/DC CONVERTER PCB

A6 53150-80010 2 BATTERY, LEAD-ACID, RECHARGEABLE

A7 53150-00004 1 SLED ASSY., BATTERY

A8 53150-00003 1 COVER, BATTERY OPENING

A9 — 1 PANEL ASSY., REAR

A10 53150-40007 1 POWER ENTRY MODULE ASSY. 2011148-01

A11 0950-3299 1 POWER SUPPLY ASSY., 45 W 2011156-01

A12

H1 2200-0155 4 SCREW, PANHEAD, 4-40x1 5120004-16

H2 0590-0076 10

H3 2200-0143 6 SCREW, PAN HEAD, 4-40x3/8 5174004-06

H4 2190-0004 6 WASHER, LOCK, #4 (USE WITH H3) —

H5 2200-0165 12 SCREW, FLATHEAD, SELF-LOCKING, 4-40x1/4 5134004-04

H6 1390-0832 2 SCREW, KNURLED HEAD, CAPTIVE, W/WASHER 5110101-00

H7 1390-0473 2 WASHER, RETAINING (USE WITH H6) 5000420-00

H8 6960-0045 1 HOLE PLUG, REAR PANEL 5000246-02

H9 0380-0643 2 SCREW, HEX STANDOFF, 6-32 —

H10 3050-0010 3 WASHER, FLAT, #6 —

H11 2190-0007 4 WASHER, LOCK, #6 —

H12 2420-0003 2 NUT, HEX, 6-32 —

1 53152A only 2 With Option 002 only 3 Without Option 002 4 Includes Rear Panel, Power Entry Module, GPIB Cable, 10 MHz I/O Cable, Power Switch, Hole Plug, and Fuse. 5 Qty. = 8 without Option 002 6 Part of A8

Agilent

Part Number Qty. Description

53150-60220

1 SWITCH ASSY., REAR PANEL POWER 2041089-01

NUT, HEX, SELF-LOCKING, 4-40 5184004-40

Mfr. Part

Number

2610181-00

5211156-01

2020543-04

5000410-00

5218025-01

5218019-01

2011146-01

Assembly Level Service Guide 4-9

Chapter 4 Replaceable Parts

Parts Identification

Table 4-2. Agilent 53150A/151A/152A Replaceable Parts (Continued)

Reference

Designation

H13 0590-0157 1 NUT, HEX, SELF-LOCKING, 6-32 5000046-00

H14 0515-1101 4 SCREW, TORX, FLATHEAD, m4x8 5138007-01

H15 2200-0164 12 SCREW, FLATHEAD, SELF-LOCKING, 4-40x3/16 5134004-03

H16 2360-0197 2 SCREW, PANHEAD, 6-32x3/8 5171006-06

MP1 53150-40008 1 SWITCH CAP, FRONT PANEL POWER 5230012-00

MP2 53150-40001 1 BUMPER, FRONT 5211122-01

MP3 53150-40009 1 BEZEL, FRONT 5211124-01

MP4 53150-40004 1 HANDLE 5211125-01

MP5 53150-40005 2 MOUNT, HANDLE 5218014-01

MP6 53150-00001 1 SHROUD 5218018-01

MP7 53150-40003 1 BEZEL, REAR 5211123-01

MP8 53150-40002 1 BUMPER, REAR 5211121-01

W1 53150-60209 1 CABLE ASSY., GPIB INTERFACE 2041084-01

— 53150-40006 1 CABLE ASSY., AC SWITCH INTERFACE

W2 53150-60210 1 CABLE ASSY., COAXIAL, 10 MHz I/O 2041086-02

W3 53147-60224 1 CABLE ASSY, HARNESS, OUTPUT, DC SUPPLY 2041083-01

W4 — 1 CABLE ASSY, RIBBON, FRONT PANEL 2041085-01

W5 53150-60216 1 CABLE ASSY, COAXIAL, BAND 1 INPUT 2041086-01

W6 53150-60208 1 CABLE ASSY., BATTERY INTERCONNECT 2041088-01

— — CABLE ASSY., HARNESS, INTERCONNECT

W7 53150-60212 1 CABLE ASSY., HARNESS, RETURN

W8 53150-60211 1 CABLE ASSY., HARNESS, INTERCONNECT

W9 53150-60213 1 CABLE ASSY., STATUS INTERFACE

53152A only

With Option 002 only

Without Option 002

Includes Rear Panel, Power Entry Module, GPIB Cable, 10 MHz I/O Cable, Power Switch, Hole Plug, and Fuse.

Qty. = 8 without Option 002

Part of A8

In Counters without Option 002, this harness is used in place of W7 and W8.

Agilent

Part Number Qty. Description

Mfr. Part

Number

2041089-01

2041082-01

2041087-02

2041087-01

2041092-01

4-10 Assembly Level Service Guide

Chapter 4 Replaceable Parts

Parts Identification

Table 4-3. Agilent 53150A/151A/152A Accessories and Miscellaneous Items

Description Agilent

Part Number

BATTERY 12 V

CABLE ASSY., EXT. DC POWER

CABLE ASSY., POWER (AUSTRALIA)

CABLE ASSY., POWER (CANADA)

CABLE ASSY., POWER (DENMARK)

CABLE ASSY., POWER (ENGLAND)

CABLE ASSY., POWER (GERMANY)

CABLE ASSY., POWER (JAPAN)

CABLE ASSY., POWER (S. AFRICA)

CABLE ASSY., POWER (USA)

CABLE ASSY., RS-232, DB-25/RJ-12

CARRYING CASE, SOFT

FUSE

GUIDE, OPERATING

GUIDE, PROGRAMMING

GUIDE, SERVICE

GPIB CABLES

RACK MOUNT, SINGLE

53150-80010

53150-60214

8120-0696

8120-1692

8120-2957

8120-1703

8120-2296

8120-4754

8120-4600

8120-1521

53150-60215

53150-80016

2110-0007

53150-90001

53150-90002

53150-90003

10833A/B/C/D

53150-67001

Assembly Level Service Guide 4-11

Chapter 4 Replaceable Parts

Parts Identification

4-12 Assembly Level Service Guide

Backdating

Chapter 5 Backdating

Introduction

Since this is the first edition of this guide, this chapter does not contain any information for adapting this guide to apply to older instruments.

As engineering changes are made, newer instruments may have higher serial prefix numbers than the ones shown on the title page of this guide. These instruments may be supplied with a Manual Updating Changes package containing the required information, or they may be supplied with newer editions of this guide that contain information about adapting that edition of this guide to older instruments.

If a Manual Updating Changes package is included with your Counter, modify existing guide information or replace the affected pages as directed in the pages of the Manual Updating Changes package. For additional information, contact the nearest Agilent Sales and Support Office.

5-2 Assembly-Level Service Guide

Specifications

Chapter 6 Specifications

Measurement Specifications and Characteristics

Introduction

The specifications of the Agilent 53150A, 53151A, and 53152A are provided in this chapter.

6-2 Assembly Level Service Guide

Chapter 6 Specifications

Measurement Specifications and Characteristics

All measurement specifications are over the full signal and temperature ranges unless otherwise noted.

Input Characteristics Agilent 53150A Agilent 53151A Agilent 53152A

Frequency Range

Channel 1 (Normal mode)

Channel 2

(Low pass filter enabled)

Sensitivity

Channel 1

10–30 Hz 30 Hz–125 MHz

Channel 2

50–300 MHz

0.3–12.4 GHz

12.4–18 GHz 18–20 GHz 20–26.5 GHz

26.5–40 GHz 40–46 GHz

Maximum Input

Channel 1 Channel 2

50 MHz–2 GHz 2–46 GHz

Damage Level

Channel 1

Channel 2

Impedance (Nominal)

Channel 1 Channel 2

Connector

Channel 1 Channel 2

SWR

Channel 2

50–300 MHz

0.3–10 GHz 10–20 GHz 20–26.5 GHz

26.5–46 GHz

Coupling

Channel 1 Channel 2

Acquisition Time (1 MHz FM rate)

Channel 1 Channel 2 (FM Auto /FM Off)

Resolution

Channel 1/Channel 2

Coupling

Channel 1 Channel 2

10 Hz–125 MHz

10 Hz–50 kHz

50 MHz–20 GHz

40 mV rms 25 mV rms

−20 dBm

−33 dBm

−29 dBm

N/A N/A N/A

2 V

rms

+5 dBm

+13 dBm

120 V (dc + ac pk) linearly derated

to 5 V

at 125 MHz +27 dBm

rms

1 MΩ/ 60 pF

50 Ω

BNC female

SMA/APC-3.5

compatible female

1.5:1 typical

2.0:1 typical

3.0:1 typical N/A N/A

ac ac

N/A

125 ms/100 ms

1 Hz to 1 MHz 1 Hz to 1 MHz 1 Hz to 1 MHz

ac ac

10 Hz–125 MHz

10 Hz–50 kHz

50 MHz–26.5 GHz

40 mV rms 25 mV rms

−20 dBm

−33 dBm

−29 dBm

−25 dBm

N/A N/A

2 V

rms

+5 dBm

+13 dBm

120 V (dc + ac pk) linearly derated

to 5 V

at 125 MHz +27 dBm

rms

1 MΩ/ 60 pF

50 Ω

BNC female

SMA/APC-3.5

compatible female

1.5:1 typical

2.0:1 typical

3.0:1 typical

3.0:1 typical N/A

ac ac

N/A

125 ms/100 ms

ac ac

10 Hz–125 MHz

10 Hz–50 kHz

50 MHz–46 GHz

40 mV rms 25 mV rms

−20 dBm

−33 dBm

−30 dBm

−27 dBm

−23 dBm

−17 dBm

2 V

rms

+5 dBm

+13 dBm

120 V (dc + ac pk) linearly derated to

5 V

at 125 MHz +27 dBm

rms

1 MΩ/ 60 pf

50 Ω

BNC female

2.92 mm remov able,

SMA/APC-3.5 compatible female

1.5:1 typical

2.0:1 typical

3.0:1 typical

2.5:1 typical

ac ac

N/A

140 ms/115 ms

ac ac

Assembly Level Service Guide 6-3

Chapter 6 Specifications

Measurement Specifications and Characteristics

Input Characteristics Agilent 53150A Agilent 53151A Agilent 53152A

Acquisition Time (1 MHz FM rate)

Channel 1

Channel 2 (FM Auto /FM Off)

Resolution

Channel 1/Channel 2

Emissions (“kickback noise”)

Channel 1 Channel 2 (measuring/no inp ut)

Residual Stability*

Channel 1 Channel 2

*Counter and so urce tied to sa me timebase

Accuracy

Channel 1/Channel 2 (LSD=Resolut ion selected)

± timebase error x frequency

Measurement Time

Channel 1

Channel 2

FM Tolerance

Channel 1 Channel 2 (FM Auto)

(FM Off)

AM Tolerance

Channel 1 Channel 2

Any index provided minimum

Amplitude Discrimination

Channel 1 Channel 2

below 300 MHz above 300 MHz

Automatically measures the largest signal present provided signal is >10 dB (typic al) above any signal separated by less than 75 MHz; >20 dB (typical) above an y signal separated by more than 75 MHz

Power Measurement

Channel 1 Channel 2

Range Accuracy at input connector** (0 dBm to −20 dBm)

0.05–12.4 GHz

12.4–20 GHz 20–26.5 GHz

26.5–46 GHz

Resolution Display

**see graphs for typical data

Counter sensitivity to +7 dBm

dBm or milliwatts/microwatts

N/A

125 ms/100 ms

1 Hz to 1 MHz 1 Hz to 1 MHz 1 Hz to 1 MHz

N/A

−40 dBm/<−70 dBm

N/A

0.6 LSD rms

±1 LSD

± residual stabili ty

1/Resolution + 20 ms

1/Resolution +

Acquisition time + 20 ms

N/A

20 MHz p-p max

@ 10 MHz rate

1 MHz p-p @ 10 MHz rate

N/A

signal level is not less

than sensitivity

N/A

±1.5 dB ±1.5 dB

N/A N/A

0.01 dB

± timebase error x frequency

1 MHz p-p @ 10 MHz rate

Any index provided minimum

Automatically mea sures the largest signal present provided signal is >10 dB (typical ) above any signal separated by le ss than 75 MHz; >20 dB (typical) above any s ignal separated by more than 75 MHz

Counter sensitivity to +7 dBm

dBm or milliwatts/microwatts

N/A

125 ms/100 ms

N/A

−40 dBm/<−70 dBm

N/A

0.8 LSD rms

±1 LSD

± residual stabili ty

1/Resolution + 20 ms

1/Resolution +

Acquisition time + 20 ms

N/A

20 MHz p-p max

@ 10 MHz rate

N/A

signal level is not less

than sensitivity

N/A

±1.5 dB ±1.5 dB ±2.0 dB

N/A

0.01 dB

140 ms/115 ms

−40 dBm/<−70 dBm

± residual stabili ty

± timebase error x frequency

1/Resolution + 20 ms

1/Resolution +

Acquisition time + 20 ms

20 MHz p-p max to 26.5 GHz,

12 MHz p-p max above

26.5 GHz @ 10 MHz rate

1 MHz p-p @ 10 MHz rate

Any index provided minimum

signal level is not less

than sensitivity

Automatically mea sures the largest signal present provid ed signal is >10 dB (typical) above any signal separated by le ss than 75 MHz; >20 dB (typical) above any s ignal separated by more than 75 MHz

Counter sensitiv ity to +7 dBm

dBm or milliwatt s/microwatts

N/A

1.25 LSD rms

±1 LSD

N/A

±1.0 dB ±1.5 dB ±1.5 dB ±2.0 dB

0.01 dB

6-4 Assembly Level Service Guide

Agilent 53150A Service Guide

Specifications and Main Features

Frequently Asked Questions

User Manual

Contents

In This Guide

How to Use This Guide

Repair Strategy

Instrument Identification

Instruments Covered by this Guide

Assembly-Level Service Guide Organization

How to Order Guides

Description of the Microwave Frequency Counter

Options

Hardware

Support

Accessories Supplied and Available

Accessories Supplied

Accessories Available

Manuals Supplied

Introduction

Operational Verification

Complete Performance Tests

Recommended Calibration Cycle

Test Record

Equipment Required

Operational Verification

Power-On Self Tests

10 MHz Test

Run Self Test

External Timebase Test

10 MHz External Timebase Input Test

Complete Performance Tests

Test 1: External Timebase Input Test

1 MHz External Timebase Input Test

2 MHz External Timebase Input Test

5 MHz External Timebase Input Test

10 MHz External Timebase Input Test

Test 2: Channel 1 Frequency Sensitivity

Test 2a: 10 Hz to 20 MHz Frequency Sensitivity

Test 2b: 50 MHz to 125 MHz Frequency Sensitivity

Test 3: Channel 2 Frequency Sensitivity

Test 3a: 50 MHz to 20 GHz Frequency Sensitivity

Test 3b: 22 GHz to 26.5 GHz Frequency Sensitivity

Test 4: Channel 2 Power Measurement

Test 4b: Channel 2 22 GHz to 26.5 GHz Power Measurement (–20 dBm)

Test 4c: Channel 2 26.5 GHz to 46 GHz Power Measurement (–20 dBm)

Test 4d: Channel 2 50 MHz to 20 GHz Power Measurement (0 dBm)

Test 4e: Channel 2 22 GHz to 26.5 GHz Power Measurement (0 dBm)

Test 4f: Channel 2 30 GHz to 46 GHz Power Measurement (0 dBm)

Performance Test Record (Page 1 of 4)

Performance Test Record (Page 2 of 4)

Performance Test Record (Page 3 of 4)

Performance Test Record (Page 4 of 4)

Introduction

Returning the Counter to Agilent Technologies for Service

Providing Repair Information

Packing the Counter in the Original Packaging Materials

Packing the Counter in Commercially Available Packaging Materials

Calibration Procedure

Equipment Required

Pre-Troubleshooting Information

Safety Considerations

Recommended Test Equipment

Repair Considerations

Electrostatic Discharge

Surface Mount Repair

Disassembly and Reassembly Specifics

After Service Considerations

Product Safety Checks

Product Performance Checks

Assembly Identification and Location

Troubleshooting the Counter

Power Supply Check

Adjusting the +5 VDC Output

Self-Test

Running the Self Test

Self Test Error Messages

Introduction

Tools Required