HP 16532A User Manual

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SERVICE MANUAL

HP 16532A

1 GSa/s Di g i t i zing

Oscilloscope

 COPYRIGHT HEWLETT-PACKARD COMPANY,

COLORADO SPRINGS DIVISION 1991-1993

1900 GARDEN OF THE GODS ROAD, COLORADO SPRINGS, COLORADO U.S.A.

Manual Part No. 16532-97002 PRINTE D: JULY 1993

SAFETY CONSIDERATIONS

GENERAL - This is a Safety Class I instrument ( provided with

terminal for protective earthing).

OPERATION - BEFORE APPLYING POWER verify that the power transformer primary is matched to the available line voltage, the correct fuse is installed, and Safety Precautions are taken (see the following warnings). In addition, note the instrument’s external markings which are described under "Safety Symbols."

• Ser vicing instructions are for use by service-trained personnel. To avoid dangerous electric shock, do not perform any servicing unless qua lified to do so.

• BEFORE SWITCHING ON THE INSTRUMENT, the protective earth terminal of the instrument must be connected to the protective conductor of the (mains) powercord. The mains plug shall only be inserted in a socket outlet provided with a protective earth contact. The protective action must not be negated by the use of an e x tension cord (power cable) without a protective conductor (grounding). Gr ou nding one conductor of a two-con duc tor outlet is not sufficie nt protec tion.

• If this instrument is to be e nergized vi a an auto-transformer (for v oltage reduction) make sure the common terminal is connected to the earth terminal of the power source.

• Any interruption of the protective (grounding) conductor (ins i de or outside th e instrument) or disconnecting the protective earth terminal will cause a potential shock hazard that could result in personal injury.

• W henever it is lik ely that the protection has been impaired, the instrument must be made inoperative and be sec ur ed against any unintended operation.

• Only fuses with the required rated current, voltage, and specified type (normal blow, time delay, etc.) should be used. Do not us e repaired fuses or shor t circuited fus eholders. To do so could cause a shock or fire hazard.

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

• Do not in stall substitute parts or perfor m any unauthorized modification to the instrument.

• A djustments described in the manual are performed with power supplied to the instrument while protective covers are r e move d. E ne rgy available at many points may, if contacted, result in personal injury.

• A ny adjustment, maintenance, and repair of the opened instrument under voltage should be avoided as much as possible, and when inevitable, should be carried out only by a skilled person who is aware of the hazard involved.

• Capacitors inside the instrument may still be charged even if the ins trument has been disconnected from its source of supply.

SAFETY SYMBOLS

Ins tr uction manual sy mbol. The product will be marked with this symbol when it is necessary for the user to refer to the instruction manual in order

to protect against damage to the product.

Indicates hazardous voltages

Earth terminal (sometimes used in manual to indicate circuit common connected to grounded chassis).

The WARNING sign denotes a hazard. It calls attention to a procedure, practice,

or the like, which, if not correctly performed or adhered to, could result in personal injury. Do not proceed beyond a WARNING sign until the indicated conditions are fully understood and met.

The CAUTION sign denotes a hazard. It calls attention to an operating procedure,

practice, or the like, which, if not correctly performed or adhered to, could result in damage to or destruction of part or a ll of the product. D o not proceed beyond a CAUTION sign until the indicated conditions are fully understood or met.

SC1D98 4

HP 16532A - Table of Contents

CONTENTS

SECTION I General Informatio n

1-1 . I ntroduction .............................................................................................................................. 1-1

1-2. Module Covered by This Manua l ............................................................................................ 1-1

1-3. S a fe ty R e quirements ............................................................................................................... 1-1

1-4. P roduct Description ................................................................................................................. 1-2

1-5. A ccessories Supplied .............................................................................................................. 1-2

1-6. A ccessories Available............................................................................................................... 1-2

1-7. S pecifications ........................................................................................................................... 1-2

1-8. Operating Characteristics ....................................................................................................... 1-2

1-9. Recommended Test Equipment ............................................................................................. 1-2

SECTION II Installation

2-1 . I ntroduction ............................................................................................................................. 2-1

2-2. Initial Inspection ...................................................................................................................... 2-1

2-3. P reparation for Use ................................................................................................................ 2-1

2-4. P ower R e quirements .............................................................................................................. 2-1

2-5. S a fe ty R e quirements .............................................................................................................. 2-1

2-6. Module Installation ................................................................................................................. 2-1

2-7. Operating Environment .......................................................................................................... 2-4

2-8. S torage .................................................................................................................................... 2-4

2-9. P a ckaging ............................................................................................................................... 2-4

2-10. Tagging for Service ................................................................................................................ 2-4

SECTION III Performance Tests

3-1 . I ntroduction .............................................................................................................................. 3-1

3-2. Recommended Test Equipment ............................................................................................. 3-1

3-3. Test Record .............................................................................................................................. 3-1

3-4. P e rformance Test Interval ....................................................................................................... 3-1

3-5. P e rformance Test Procedures ................................................................................................ 3-1

3-6. DC C AL OUTPUT Test ............................................................................................................. 3-2

3-7. A C C AL OUTPUT Test ............................................................................................................. 3-3

3-8. Input Resistance ...................................................................................................................... 3-4

3-9. Voltage Measurement Accuracy ............................................................................................. 3-6

3-10. Offse t A ccuracy ....................................................................................................................... 3-9

3-11. Ba ndwidth ................................................................................................................................ 3-11

3-12. Time Measurement Accuracy .................................................................................................. 3-13

3-13. Trigger Sen s itivity .................................................................................................................... 3-15

HP 16532A - Table of Contents

SECTION I V Calibration

4-1 . I ntroduction............................................................................................................................... 4-1

4-2. S a fe ty R e quirements................................................................................................................ 4-1

4-3. Ca libration Interval.................................................................................................................... 4-1

4-4 . M aintaining System Integrity.................................................................................................... 4-1

4-5 . Calibration Protection Switch................................................................................................... 4-1

4-6. Recommended Test Equipment..............................................................................................4-2

4-7 . I ns trument Warmup.................................................................................................................. 4-2

4-8. Ca libration................................................................................................................................. 4-2

4-9 . Setting the PROTECT/UNP ROTECT Switch to UNPROTECT................................................ 4-3

4-10. Equipment Required for Calibration ....................................................................................... 4-4

4-1 1. Loading the D efault Calibration Factors................................................................................. 4-4

4-12. Self Cal Menu Calibrations...................................................................................................... 4-5

4-1 3. Setting the PR O TEC T/UNP ROTECT Switch to PROTECT.................................................... 4-8

4-14. Sealing the Mainframe............................................................................................................. 4-8

Section V Replaceable Parts

5-1 . I ntroduction .............................................................................................................................. 5-1

5-2. A bbreviations ........................................................................................................................... 5-1

5-3. Replaceable Parts List ............................................................................................................. 5-1

5-4. Ordering Information ............................................................................................................... 5-1

5-5. E xchange Assemblies ............................................................................................................. 5-1

5-6. Direct Mail Order System ........................................................................................................ 5-2

SECTION VI Service

6-1 . I ntroduction .............................................................................................................................. 6-1

6-2. S a fe ty R e quirements ............................................................................................................... 6-1

6-3. Recommended Test Equipment ............................................................................................. 6-1

6-4. Module Block Diagram and Theory of Operation ................................................................... 6-1

6-5. A ttenuator Theory of Operation............................................................................................... 6-1

6-6. Main A s se mbly Theory of Operation ....................................................................................... 6-1

6-7. S e lf-Tests .................................................................................................................................. 6-4

6-8. Troubleshooting ....................................................................................................................... 6-10

6-9. Oscilloscope Module R e moval and R e placement ................................................................. 6-18

6-10. Trigger Cable Removal and R e placement ............................................................................. 6-20

6-11. Attenuator Removal and Replacement .................................................................................. 6-21

HP 16532A - Table of Contents

LIST OF TABLES

TABLE TITLE PAGE

1-1. HP 16532A Specifications........................................................................................................ 1-3

1-2. HP 16532A Operating Characteristics..................................................................................... 1-4

1-3. Recommended Test Equipment..............................................................................................1-9

3-1. P e rformance Test R e cord ........................................................................................................ 3-17

4-1. Ca libration Sequence............................................................................................................... 4-2

5-1. Reference Designator and Abbreviations................................................................................ 5-3

5-2. Replaceable Parts List.............................................................................................................. 5-5

LIST OF FIGURES

FIGURE TITLE PAGE

2-1. E ndplate Overlap - Top Sequence........................................................................................... 2-2

2-2. E ndplate Overlap - Bottom Sequence..................................................................................... 2-3

3-1. Voltage Measurement Accuracy Test........................................................................................ 3-7

4-1. E ndplate Overlap - Top Sequence........................................................................................... 4-3

4-2 . Location of the PROTECT/UNP ROTECT Switch..................................................................... 4-3

4-3 . Default Calibration Dis pla y....................................................................................................... 4-4

4-4. E xt T rig Null Calibration Connections......................................................................................4-7

4-5. E nd of Calibration Display........................................................................................................ 4-8

4-6. E ndplate Overlap - Top Sequence .......................................................................................... 4-8

5-1. Pa rts I de ntification.................................................................................................................... 5-4

6-1. HP 16532A Oscilloscope Block Diagram................................................................................ 6-2

6-2 . Startup Screen.......................................................................................................................... 6-4

6-3. Load Te st S ystem Screen........................................................................................................6-5

6-4. Test System Screen.................................................................................................................. 6-5

6-5. Functional Tests Screen........................................................................................................... 6-6

6-6. Main Test Menu ........................................................................................................................ 6-6

6-7. A /D Test Run Screen................................................................................................................ 6-7

6-8. S top Field.................................................................................................................................. 6-7

6-9. Exit Tes t System Screen..........................................................................................................6-8

6-10. Troubleshooting Flowchart ...................................................................................................... 6-13

6-11. Endplate Overlap - Top Sequence........................................................................................... 6-18

6-12. Endplate Overlap - Bottom Sequence..................................................................................... 6-19

6-13. Oscilloscope Module Exploded View...................................................................................... 6-20

vii

TABLE OF CONTENTS

General Informatio n

1-1 . I ntroduction...........................................................................................................................1-1

1-2. Module Covered by Manual.................................................................................................1-1

1-3. S a fe ty R e quirements.............................................................................................................1-1

1-4. P roduct Description..............................................................................................................1-2

1-5. A ccessories Supplied ...........................................................................................................1-2

1-6. A ccessories Available...........................................................................................................1-2

1-7. S pecifications........................................................................................................................1-2

1-8. Operating Characteristics.....................................................................................................1-2

1-9. Recommended Test Equipment ..........................................................................................1-2

1-1. Introduction

HP 16532A - General Information

SECTION I

General Information

Th e service policy for this instrument is replacement of defective asse mblies. This service guidel contains information for finding a defective assembly by testing and servicing the HP 16532A 1 GS a/s Oscilloscope Module. Also included in the guide are installation procedures and a list of recommended test equipment. This guide is divided into six sections as follows:

I - General Information

II - Installation

III - Performance Tests

IV - C a libration

V- Replaceable Parts

V I - Service

Th e G e ne ra l I nformation S e ction includes safety requirements, a product description, and a list of accessories supplied and of accessories available. Also included are table s lis ting specifications and operating characteristics, and a list of recommended test equipment.

To complete the service documentation for your HP 16500 Logic Analysis System, place this serv ice manu a l in the 3 - ring binder with your other logic analysis system Service Guides.

1-2. Mo d ule Covered by This Ma nual

Th e inf ormation covered in this ma n ual is for the HP 16532A 1 GSa/s Oscilloscope Module.

1-3. Safety Requirements

Specific warnings, cautions, a nd instructions are placed wherever applicable throughout the manual. These must be observe d during all pha ses of opera tion, s ervi ce, and repa i r of the module. Failure to comply with them violates safety standards of design, manufa cture, a n d intended use of this module.

Hewlett-Packard assumes no liability for the failure of the customer to comply with these safe ty requirements.

1-1

HP 16532A - General Information

1-4. Product Description

The HP 16532A Oscilloscope Module is a 1 GS a /s digitizing oscilloscope. Some of the main f e atures are:

• 1 GSa/s digitizing for 250 MHz bandwidth sin-

gle shot analysis.

• 8000 samples per channel.

• Automatic pulse parame te rs , dis plays time be-

tween ma rke rs , acquires until s pecifi e d time between ma rke rs is captured, performs statistical analys is on time betwee n ma rke rs .

• Lightweight miniprobes.

1-5. Accessories Supplied

Th e following accessories are supplied with the HP 16532A Oscilloscope module. Quantity one unless shown otherwise.

• Use r’s Refere nce and Programming R e f er-

ence set

• 24-pin IC test clip (HP 10211A)

• BNC-to-BNC ac coupling capacitor

(HP 10240B)

10:1 Probe:

• 1-MΩ, 7.5- pf miniprobe, 1 m (HP 10435A )

1:1 Probes:

• 40-pf miniprobe, 1 m (HP 10438A)

• 64-pf miniprobe, 2 m (HP 10439A)

• 50-Ω miniprobe, 2 m (HP 10437A)

100:1 Probe:

• 10-MΩ, 2.5- pf miniprobe, 2 m (HP 10440A )

1-7. Specifications

Module specifications are listed in table 1-1. These specifications are the performance standards against which the module is tested.

• Service G uide

• HP 10441A 10:1 probes, Qty 2

• Right angle BNC adapters, Qty 2

• BNC miniprobe adapter

• Mas te r- slave trigger cable

• Operating Sys tem Software

1-6. Accessories Available

• 10:1, 100:1, 50 Ω, 10 pf resistive divider probe

set, 1.2 m (HP 10020A)

• BNC-to-BNC cable, 1.2 m (HP 10503A)

1-8. Operating Characteristics

Ta ble 1 - 2 is a listing of the module operating characteristics. The operating characteristics are not specifications, but are the typical operating characteristics included as a dditional information for the user.

1-9. Recomme nded Test Equipment

Equipment required to test and maintain the HP 16532A Oscilloscope Module is listed in table 1-3. Other equi pment may be substituted if it meets or e xceeds the critical specifications listed in the table.

1-2

HP 16532A - General Information

Table 1-1. HP 16532A S pecifications

HP 16532A SPECIFICATIONS

Type: 2- chann el s imulta ne ous a cquisition

(* ,1)

Bandwidth Maximum Sample Rate: 1 Gigasample per second Number of Channels: 2, 4 , 6, 8 simultaneous channels usi ng the s ame time base s etting(s)

OR Up to 10 chan nels with independent time bases f or e ach pair of channels.

Up to 18 chann e ls with the HP 16501A Expansion Frame.

Rise Time ADC: 8-bit real time Vertical Resolution: 8 bits ov er 4 vertica l div i s i ons (± 0.4%) Waveform Record Length: 8000 points Time Interval Measurement Accuracy Vertical (dc) Gain Acc ura c y DC Offset Accurac y Voltage Measurement Accuracy Trigger Sensitivity

: dc to 250 MHz (real time, dc-coupled)

(2)

: 1.4 ns

(*,3,6)

(4)

: ± 1.5% of full scale

(* )

: ± (1.0 % of channel offset + 2.0% of full s cal e )

(* ,5)

: ± [(1.5% of full scale + offset accuracy) + (0.008 x V/div)]

(* )

: dc to 50 MHz: 0.063 x full scale, 5 0 to 250 MHz: 0.125 x full scale

: ± [(0.005% X ∆t)+ (2 x 10

−

x delay se tting)+ 150 ps]

Input Coupling: 1 MΩ: ac and dc, 50 Ω: dc only

(*)

Input R (selectable)

: 1 MΩ: ± 1%, 50 Ω: ± 1%

Input C: Approximately 7 pF

___________________________________________________________________________________________

NOTES:

* Specifications (valid within ± 10° C of auto-calibration temperature, excluding bandwidth− see note 1 for bandwidth specification.)

1. Upper bandwidth reduces by 2.5 MHz for every degree C above 35° C. =

bandwid th

0.35

sample rate

2. Rise time is calculate d from the formula:

3. S pe cification applies to the maximum s ampling rate. At lower rates, the s pecification is:

± [(0.005% x ∆t)+ (2 x 10

= 1.4 x sa mple inte rv a l). Sample interva l is defi ne d as

-6

x delay setting) + (0.15 x sa mple interv a l)] for bandwidth limited signals

4. Vertical gain accuracy decreas es 0.0 8% per degree C from software cal ibra tion temper a ture.

5. D i gitizi ng le vel = (#vertical divisions)(

)(

), where LS B = 2

LSB

# bits in ADC

6. The T ime Inte rval Mea s ure me nt Accuracy deteriorates across multiple modules connected as one

unit with ea ch a dded module.

1-3

HP 16532A - General Information

Table 1-2. HP 16532A Operating Characteristics

HP 16532A OPERATING CHARACTERISTICS

VERTICAL (at BNC)

Vertical Sensitivity Range (1:1 Probe):

4 mV/div to 10 V/div in 1-2-4 increments

DC Offset Range (1:1 Probe):

V e rtical Sensitiv ity Availa ble Offse t 4 mV/div to 100 mV/div ± 2 V > 100 mV/div to 500 mV/div ± 10 V > 500 mV/div to 2.5 V/div ± 50 V > 2.5 V/div to 10 V/div ± 250 V

Probe Factors:

Any integer ratio from 1:1 to 1000:1

Maximum Safe Input Voltage:

1 MΩ: ± 250 V [dc + peak ac (< 10 KHz)] 50 Ω: ± 5 VRMS

Channel-to-Channel I solation:

dc to 50 MHz: 40 dB, 50 MHz to 250 MHz: 30 dB

TIM EBASE

Range:

1 ns/div to 5 s/div

Resolution:

20 ps

Delay Pre-trigger Range:

Ti me /div Setting Available Delay 1 µs to 5 s/div -8 x (s/div) 1 ns to 500 ns/div -4 µs

Delay Post-trigger Range:

1-4

Ti me /div Setting Available Delay 100 ms to 5 s/div 2.5 ks 1 µs to 50 ms/div 33,500 x (s/div) 1ns to 500 ns/div 16.7 ms

TRIGGERING

Trigger Level Range:

Trigger Modes:

Immediate:

Edge:

Pattern:

HP 16532A - General Information

Table 1-2. HP 16532A Operating Characteristics (cont.)

Within display window (full scale an d offset)

Triggers imme diate ly a f ter a rming condition is met.

Triggers on rising or falling edge of any internal channel or external trigger, count adjustable f rom 1 to 32,000.

Triggers on ente ring, e xiting, duration greater tha n, duration less than, and duration in range for a specified pattern of both internal channels an d external trigger, count adjustable from 1 to 32,000. Duration time range is a djustable from 20 ns to 160 ms in 10 ns steps. Duration accuracy is approximately ± 3% ± 2 ns.

Auto-Trigger:

If enabled, the module will self-trigger if no trigger condition is found within approximately 50 ms after arming.

Events Dela y:

Th e trigger can be s et to occur on the nth edge or pattern, as specified by the user. The number of events (n) can be s et from 1 to 32,000 events. Maximum count frequency is 7 0 MH z .

Intermodule:

Arms a n other mea sure me nt module or triggers the re a r pane l B NC .

Exte rn a l:

If ena bled, the oscilloscope will trigger on an ECL l ev e l s ignal (-1 . 3 V).

DIGITIZER

Resolution: 8 bits (1 part in 256) Digitizing Rate: Up to 1 Gigasample per second Digitizing Technique: Re al-time digitizing; each 8000 samples are acquired on a single acquisition Acquisition Memory Size: 8000 samples per channel

1-5

HP 16532A - General Information

Table 1-2. HP 16532A Operating Characteristics (cont.)

WAVEFORM DISPLAY

Displayed Wavefo rms:

Eight wave f orm windows maximum, with scrolling across 96 wav e f orms.

Display Forma ts:

W aveforms can be di splay ed in an ove rlapping and/or non-ov erla pping format. Displa y capability of A − B and A+ B is also provided.

Display Resolution:

500 points horizontal, 240 points vertical

DISPLAY M ODES

Normal (Single):

New acquisition replaces old acquisition on screen.

Accu mu l at e:

New acquisition is displayed in addition to previous acquisitions until screen is erased.

Average:

New a cquisitions are a veraged with old acquisitions, with the updated wav e f orm displayed until era s e d. M a ximum number of a v e rages is 256.

Overlay:

Up to 8 acquired waveforms from separate channels can be ove rla ye d in the same display area.

Connect-the-dots:

Provides a displa y of the s ample points connected by straight lines.

Waveform Reconstr uction:

Wh e n the re is insufficient data to fill e v ery horizontal location, a post acquisition reconstruction filter fills in missin g data points for time bas e < 50 ns/div.

Waveform Math:

1-6

Displa y capability of A − B and A+ B functions is provided.

Table 1-2. HP 16532A Operating Characteristics (cont.)

MEASUREMENT AIDS

Time Markers:

Tw o vertical markers, X and O, are provided for mea surements of time and voltage. Capabilities are: measure voltage at point where X and O markers cross each a n alog waveform; me asure time f r om trigger to X, trigger to O, and X to O; automatic marker placement by specifying percentage of edge, edge number, and rising or falling edge type; run until X to O > than, < than, in range, and not in range provides selective event search; X to O statistics (mean, max, an d min) provide analysis of time interval deviation.

Automatic Search:

Se arches for a percentage or an absolute voltage lev el at a positive or ne gative edge, count adjusta ble from 1 to 100.

Auto Search Statistics:

HP 16532A - General Information

Mea n, maximum, an d minimum values for el apsed time from X to O ma rke rs for multiple runs. Number of val id runs a n d total number of runs av a i la ble .

Automatic Measurements:

The following pulse parameter mea s ure me nts can be perf ormed automatically:

Freque ncy R is e time + pulse width Pe riod Fall time − pulse width V p-p Preshoot V

Overshoot

Grid:

Gr aticules ca n be displaye d i n backrou nd of wa vefor m.

Voltage Markers:

Tw o horizontal marke rs, A an d B, are provided for voltage measure me nts. Th e se markers can each be placed on any acquisition channel trace. A delta volt age display pr ovides delta V betwe en ma r k ers on t h e sa me cha nnel or between two channels .

amplitude

(*gives difference between top and base voltages; only available over bus)

1-7

HP 16532A - General Information

Table 1-2. HP 16532A Operating Characteristics (cont.)

SETUP AIDS

Autoscale:

Autoscale s the vertical an d horizontal ra n ges , off s et, and trigger level to display the input signals. Requires a frequency between 50 Hz and 250 MHz.

Presets:

Scale s the vertical ra n ge, offset, and trigger level to predetermined values for displaying ECL or T TL waveforms.

Calibration:

V e rtica l, trigger, del a y, and all defaults . C alibration factors stored in NV-RAM on the circuit board.

Probe Compensation Source:

External BNC su pplies a square wave approximately 0. 0 mV to -800 mV into the open circuit at approximately 1000 Hz.

OPERATING ENVIRONMENT

Temperature:

Instrument, 0° to 5 5 ° C (+ 32° to 131° F). Probes and cables, 0° to 65° C (+ 32° to 149° F).

Humidity:

Instrument, u p to 95% relativ e humidity a t + 4 0 ° C (+ 104° F). Recommended disk media, 8% to 80 % relative humidity at + 4 0° C (+ 104° F).

Altitude:

To 4600 m (15,000 ft).

Vibration

Operation:

Random vibration 5-500 Hz, 10 minutes per a xis , ~ 0 . 3 g (rms).

Non-operating:

Random vibration 5-500 Hz, 10 minutes per a xis , ~ 2 . 41 g (rms); and swept sine resonant search, 5-500 Hz, 0.75 g (0- peak), 5 minute resona nt dwell @ 4 resonances per axis.

1-8

HP 16532A - General Information

Table 1-3. Recommended Test Equipment

EQUIPMENT CRITICAL SPECIFICATIONS RECOMMENDED MODEL USE*

Signal Generator Frequency: 1 - 250 MHz at approx .

170 mV RMS resolution Output Accuracy: ± 1 dB 1 MHz time bas e accuracy 0.2 5 ppm

Dc Power Supply Range: − 35.000 to + 35.000 Vdc, ± 1 mV HP 6114A P

Digital Multime ter 0.1 mV resolution

Accuracy: better than 0.005% R esistance mea s u rement: bette r th a n

0.25% accuracy

Power Meter/Sensor 1 - 250 MHz ± 3% accuracy HP 436/8482A P

Power Splitter Outputs differ by < 0.1 5 dB HP 11667B P

Blocking Capacitor 50 Ω BNC (m-to-f), 0.18 µF, ± 200 V HP 10240B P

Adapter 50 Ω BNC (m)(m) HP 1250-1236 C

Adapter 50 Ω Type N(m)- to-B N C (m) HP 1250-0082 P

Adapter 50 Ω BNC(f)-to-Dual Banana Plug HP 1251-2277 P

HP 8656B Option 001 P

HP 3458A P

Adapter 50 Ω Type N(m)-to-BN C (f ) HP 1250-0780 P

Tee Adapter 50 Ω BNC (m)(f)(f ) HP 1250-0781 P,C

Cable Type N(m-to-m) 24- i nch HP 11500B P

Cable 50 Ω BNC (m-to-m) 48-inch HP 10503A P

Cable 50 Ω BNC (m-to-m) 9 inch HP 10502A C

Cable 50 Ω BNC-SMB HP 16532-61601 C

*P= Performance Tests C= Calibrations

1-9

1-10

TABLE OF CONTENTS

Installation

2-1 . I ntroduction ......................................................................................................................... 2-1

2-2. Initial Inspection .................................................................................................................. 2-1

2-3. P reparation for Use ............................................................................................................. 2-1

2-4. P ower R e quirements .......................................................................................................... 2-1

2-5. S a fe ty R e quirements ........................................................................................................... 2-1

2-6. Module Installation .............................................................................................................. 2-1

2-7. Operating Environment ................................................................................................. ..... 2-4

2-8. S torage ................................................................................................................................ 2-4

2-9. P a ckaging ........................................................................................................................... 2-4

2-10. Tagging for Service ............................................................................................................. 2-4

HP 16532A - Installation

SECTION II

Installation

2-1. Introduction

This section explains how to initially inspect the HP 16532A Oscilloscope Module, then how to prepare it for use, storage, and shipment. Also included are procedures for module installation.

2-2. Initial Inspection

Inspect the shipping container for damage. If the shipping container or cushioning material is damaged, it should be kept until the contents of the shipment have been checked for completeness and the module has been checked mechanically and electrically. T h e contents of the shipment should be as lis te d in the "Accessories Supplie d" par agraph l ocated in Secti on I.

Procedures for checking electrical performance are in Section III. If the contents of the container are incomplete, there is mechanical damage or defect, or the instrume nt does not pass the performance tests, notify the nearest Hewlett-Packard sales office.

2-4. Power Requirements

All power supplies required for operating the HP 16532A Oscilloscope Module are supplied to the module through the backplane connector in the mainfra me .

2-5. Safety Requirements

Hewlett-Packard assumes no liability for the failure of the customer to comply with these safe ty requirements.

2-6. Module Installation

If the shipping container is damaged, or the cushioning material shows signs of stress, notify the carrier as w e ll a s the Hewlett-P a ckard sa l e s office. Keep the shipping material so the carrie r can inspect it. Th e H e wle tt-P a ckard office will arrange for repair or replacement at Hewlett-Packard’s option without waiting for claim settlement.

2-3. Preparation for Use

Rea d the Safety Considerations in the front of this man u al and in Section I be f or e ins talling or operating this module.

Do not inst all, remove , or replace the module in the instrument unless the instrument power is turned off.

The HP 16532A Oscilloscope Module will take up one slot in the card cage. For ev e ry a dditional HP 16532A Oscilloscope Module you install, you will need an a dditional slot. Th e y may be insta lle d in any slot and in any order. The install a tion procedure for the module is continued, step-by-step, on the next page.

2-1

HP 16532A - Installation

Module Insta llation (cont. )

The effects of ELECTR OST ATIC D ISCHARG E can damage electronic components. U se grounded wrist straps and mats when you are performing any kind of service to this module.

Installation Considerations

• The HP 16532A Oscilloscope Modules can be installed in any available card slot.

• For multiple modules connected as one unit, the ma s te r card must be placed in the s lot above the

expander cards. The ma s ter card and expander cards must be in adjoining slots.

• Cards or filler panels below the e mpty slots intended for module installation do not have to be re-

moved to install a module above them.

Proced u r e:

1. T urn i ns trume nt power switch off, unplug power cord and disconnect any input connections.

2. Starting from the top, loosen the thumb screws on the fille r pane ls and cards.

3. Starting from the top, begin pulling out the cards and filler panels halfway. See figure 2-1.

Figure 2-1. Endplate Ov erlap - Top Sequence

2-2

HP 16532A - Installation

4. S lide the oscilloscope module into the card cage approximately halfway.

5. If you hav e more oscilloscope cards to install, slide them into the card cage approximately halfway.

6. F irmly s eat the bottom card into the backplane connector. Keep applying pressure to the center

of the card endplate while tightening the thumb screws finger tight.

7. Repeat step 6 for all cards and filler panels in a bottom-to-top order. See figure 2-2.

8. A ny fille r pane ls tha t a re not used should be kept for future use. Fille r pane ls must be ins t alle d i n all

unused card slots for correct air circulation.

F igure 2-2 . Endplate Overlap - Bottom Sequence

2-3

HP 16532A - Installation

2-7. Operating Environment

Th e operating env ironment is lis te d in table 1-2 of Se ction I of this manu a l. N ote s h ould be made of the non-condensing humidity limitation. Condensa tion within the instrume nt can cause poor oper ation or malfun ct ion . Protect i on should be provided against internal condensation.

The HP 16532A Oscilloscope Module will operate at all specifications within the te mpera ture an d humidity range giv en in table 1-2. H owe ver, reliability is enhanced when operating the module within the following ranges.

• Temperature: + 20 °C to + 35 °C (+ 68 °F to

+ 95 °F)

• Humidity: 20% to 80% non-condensing

2-8. Storage

T h e module m ay be s tor e d or shippe d i n environments within the following limits:

2-9. Packaging

The following general instructions sh ould be us ed for repacking the module with commercially availa ble ma teria ls .

• Wrap the module in antis tatic plastic.

• Use a strong shipping container. A double-

walled carton made of 350-lb test material is adequate.

• Use a layer of shock-absorbing material 70 to

100 mm (3- to 4-inch) thick around all sides of the module to provide firm cushioning and to prevent movement within the container.

• Seal the shipping container securely.

• Mark the shipping container FRAGILE to en-

sure proper handling.

• In any correspondence, refer to the module

by its model number and serial number.

• Temperature: − 40 °C to + 75 °C

• Humidity: Up to 90% at 65 °C

• Altitude: Up to 15,300 meters (50,000 feet)

The module should also be protected from temperature extremes which cause condensa tion on the instrument.

2-10. Tagging for Service

If the module is to be shipped to a Hewlett-Packard sales office for service or repair, attach a tag showing owner (with address), complete se ria l number, a n d a des cription of the service required.

2-4

TABLE OF CONTENTS

Performance Tests

3-1 . I ntroduction ......................................................................................................................... 3-1

3-2. Recommended Test Equipment ........................................................................................ 3-1

3-3. Test Record ......................................................................................................................... 3-1

3-4. P e rformance Test Interval .................................................................................................. 3-1

3-5. P e rformance Test Procedures ........................................................................................... 3-1

3-6. DC C AL OUTPUT Test ........................................................................................................ 3-2

3-7. A C C AL OUTPUT Test ........................................................................................................ 3-3

3-8. Input Resistance ................................................................................................................. 3-4

3-9. Voltage Measurement Accuracy ........................................................................................ 3-6

3-10. Offse t A ccuracy .................................................................................................................. 3-9

3-11. Ba ndwidth ........................................................................................................................... 3-11

3-12. Time Measurement Accuracy.............................................................................................. 3-13

3-13. Trigger Sen s itivity ............................................................................................................... 3-15

HP 16532A - Performance Tests

SECTION III

Pe rformance Tests

3-1. Introduction

Th e procedures in this section test the oscilloscope module’s electrical performance using the specifications listed in Se ction I as the performance standards. All tests can be performed without access to the inte rior of the instrument. At the end of this section is a f orm that can be used as a record of performance test results.

3-2. Recomme nded Test Equipment

Equipment recommended for performance tests is listed in table 1-3. Any equipment that satisfies the critical specifications given in the ta ble ma y be substituted for the re commended models .

3-3. Test Record

R esults of performance tests ma y be ta bula te d on the Performance Test Record (table 3-1) at the end of the procedures. The test record lists all of the tested spe cifications an d their acceptable limits.

Th e re s ults re corded on the test record may be used for comparison in periodic maintenance a nd troubleshooting or after repairs a n d adjustments have been made.

3-4. Performance Test Interval

Pe riodic performance verification of the HP 16532A Oscilloscope Module is required at one-yea r inte rv als. Th e instrument’s performance should be verified after it has been serviced, or if improper operation is suspected. Calibration sh ou ld be performe d before any performance verif ication checks.

3-5. Performance Test Procedures

Al l perform a n ce tes ts should be performed at the environmental opera ting temperature of the instrument, af te r a 30-minute w a rmup period.

3-1

HP 16532A - Performance Tests

3-6. DC CAL OUTPUT Test

Th e DC CAL OUTPUT port on the rear pane l is used for instrument cali bration an d probe calibration. Th ough calibrator accuracy is not specified in the performance specifications, it must be within limits in order t o p rovi de accurat e calibration.

Test Limits:

5.000 V ± 10 mV

Equipment Required:

The f ollowing equipment is required for the test.

Recommended

Equipment Required Critical Specification

Model/ Part Number

Digital Multime te r Cable Adapter

Procedure:

1. Us e the BNC-to-bana n a a da pter to connect the BNC cable between the multime te r a n d the oscillo-

scope module DC CAL OUTPUT connector.

2. On the oscilloscope module set the following parameters in the order given:

Menu Selection Setting

Calibration Mode

3. The DVM should read close to 0.0000 V. Record the reading to four decimal places.

V1 = __________ .

0.1 mV resolution, better than 0 .005% accuracy 50 Ω BNC (m to m) 48- in ch 50 Ω BNC (f) to Dual Banana Plug

Service Calibration Procedure DC Volts

DC Cal BNC

0 V

HP 3458A HP 10503A HP 1251-2277

4. In the Calibration menu se t the DC V olts to 5 V.

5. The DVM should read close to 5.0000 V. Record the reading to four decimal places. V2 = __________ .

6. In the Calibration menu se t the DC V olts to 0 V.

7. Subtract V1 from V2. The difference should be between 4.990 and 5.010 V. Record the reading in the performance test record.

3-2

HP 16532A - Performance Tests

3-7. AC CAL OUTPUT Test

Th e AC CAL OUTPU T port on the rear pane l is used for instrument cali bration an d probe compensation. Th ough calibrator accuracy is not specified in the performance specifications, it must be within limits in order t o p rovi de accurat e calibration.

Test Limits:

1000 Hz ± 10%, 0.8 V p_p ± 10%

Equipment Required:

The f ollowing equipment is required for the test.

Recommended

Equipment Required Critical Specification

Cable 50 Ω BNC (m to m) 48-inch HP 10503A

Model/ Part Number

Procedure:

1. Use the BNC cable to connect the AC C AL OUT PUT to channel 1 input of the oscilloscope module.

2. On the oscilloscope module set the following parameters in the order given:

Menu Selection Setting

Calibration

Channel

3. In the Calibration menu select AUTOSCALE.

4. In the Auto-Meas ure me nu verify that the wa v eform is approximately 0 . 8 Vp_ p at a pproximately 1000 Hz. Record the reading in the performance test record.

Mode Procedure Signal Coupling Probe

Service Calibration Oscillator Output Probe Compensation 1 MΩ/DC 1:1

3-3

HP 16532A - Performance Tests

3-8. INPUT RESISTANCE

This tes t verifies the input resistance of the oscilloscope module. A four-wire meas ure me nt is us ed for accuracy at 50 Ω.

Specification:

1 M Ω ± 1% and 50 Ω ± 1%

Equipment Required:

The f ollowing equipment is required for the test. Procedures are base d on the model or part numbers recommended.

Recommended

Equipment Required Critical Specification

Model/ Part Number

Digital Multime te r

Cables (2) Adapter Adapte rs ( 2 )

Procedure:

1. S et up the multimeter to make a 4- wire re s is ta nce me asurement.

2. Us e the B N C - to-banana adapters to connect one end of each BNC cable to the 4-wire re s is ta nce connections on the multimete r, a n d connect the free e n ds of the cable s to the BNC T ee.

3. Connect the male end of the BNC tee to the channel 1 input of the oscilloscope module. Set up the oscilloscope module according to the following parameters in the order given:

Menu Selection Setting

Channel

Meas ure res is tance (4- wire ) better than 0.2 5 % accuracy

50 Ω BNC (m to m) 48 - i nch 50 Ω BNC Tee (m)(f)(f) 50 Ω BNC (f) to Dual Banana Plug

Input Probe V/Div Offset Coupling

1 1:1 20 mV 0 V 50 Ω / DC

HP 3458A

HP 10503A HP 1250-0781 HP 1251-2277

Trigger

3-4

Mode

Immediate

HP 16532A - Performance Tests

4. Select RUN - SINGLE . The clicking of attenuator relays sh ould be audible. Verify res is tance rea dings on the digital multimeter of 50 Ω ± 0.5 Ω (49.5 to 50.5 Ω).

5. In the Channel menu change the Coupling field to 1 MΩ/DC.

6. S e l ect RUN. The clicking of attenuator relays should be audible. Verify resistance readings on the digital multimeter of 1 MΩ ± 10 kΩ (0.990 to 1.010 MΩ).

7. In the Channel menu change the Coupling field to 50 Ω/DC and V/Div to 200 mV/Div. Repeat steps 4 through 6.

8. In the Channel menu change the Coupling field to 50 Ω /DC and V/Div to 1 V/Div. Repeat steps 4 through 6.

9. In the Channel menu change the Coupling field to 50 Ω /DC and V/Div to 4 V/Div. Repeat steps 4 through 6.

10. Connect the male end of the BNC tee to the channel 2 input of the oscilloscope module.

11. Repeat ste ps 3 through 9 for channel 2 , r e placing channe l 1 with channel 2 w h e r e applicable.

Note

If a reading is not within limits, then the attenua tor for the out-of-bounds channel shou ld be r eplaced. See "Serv ice" in Section VI.

3-5

HP 16532A - Performance Tests

3-9. VOLTAGE MEASUREMENT ACCURACY

Thi s te st verifie s the DC voltage me asurement a ccuracy of the instrume nt. This procedure use s a dual cursor measureme nt that nullifies offse t e rror, resulting in the following measure me nt: ± [(1.5% of full s cale) + (0.016 x V/div)].

Specification:

± [(1.5% of full s cale + offset accuracy) + (0.008 x V/div)]

Equipment Required:

The f ollowing equipment is required for this test. Procedures are bas ed on the model or part numbers recommended.

Recommended

Equipment Required Critical Specification

Model/ Part Number

DC Power Supply Digital Multime te r Cable Adapter

(cable to power supply) Adapter Blocking Capacitor

-14 Vdc to + 14 Vdc, 0.1 mV resolution Better than 0.1% accuracy 50 Ω BNC (m to m) 48-i nch 50 Ω BNC (f) to Dual Banana Plug

50 Ω BNC tee (m)(f)(f) 50 Ω BNC (m to f) 0.18 µF, 200 V

HP 6114A HP 3458A HP 10503A HP 1251-2277

HP 1250-0781 HP 10240B

3-6

HP 16532A - Performance Tests

Proced ure:

1. Using a BNC adapter, connect one end of the cable to the power supply. Connect the BNC tee, the blocking capacitor, and the s h orting endcap to the other end of the cable. R efer to figure 3-1.

Figure 3-1 . Voltage Measurement Accuracy Test

2. In the Wav e form Selection menu delete channel 2. If channel 1 is not inserted, insert channel 1. Set the following parameters in the order given.

Menu Selection Setting

Channel

Trigger Display

Input Probe Coupling s/Div

Mode Mode

Average # Grid Markers

1 1:1 1 MΩ / DC 500 ns

Immediate Average

8 On On

Set the C ha nnel result.

Coupling

field to 1 MΩ/DC or damage to the equipment will

3-7

HP 16532A - Performance Tests

Use the f ollowing table for steps 3 through 9.

V/Div Offset Supply Upper Limit Lower Limit

4 V/Div 1 V/Div 400 mV/Div 40 mV/Div 40 mV/Div 400 mV/Div 1 V/Div 4 V/Div

3. With the power supply disconnected from the channel input, se t the C h a nn e l me nu to the V/Div range and offset values shown in the first line of the table.

4. On the oscilloscope, select RUN - REPETITIVE and wait for approximately fiv e seconds, then select STOP. Read the voltage displaye d under the chan nel label on the lef t of the dis play. Enter this value on the performance test record in the "Ze r o Input" column.

5. Set the power supply to the first supply value listed in the table. Connect the power supply to the channel input as s hown in figure 3 - 1 .

6. On the oscilloscope, select RUN - REPETITIVE and wait for approximately fiv e seconds, then s elect STOP. Read the voltage displaye d under the chan nel label on the lef t of the dis play. Enter this value on the pe rformance te s t re cord in the "Measured" column.

7. To obtain the tes t re s ults , subtract the Zero Input voltage from the Measured voltage listed in the performance test record. For ex a m ple: (M easured) - (Z ero Input) = (Actual). When calculating the results, observ e the plus or minus value of the v oltage measurements . Record the results in the pe rformance test record in the "Actual" column.

-7.0 V

-1.75 V

-700.0 mV

-70.0 mV

70.0 mV

700.0 mV

1.75 V

7.0 V

-14.0 V

-3.50 V

-1.40 V

-140.0 mV

140.0 mV

1.40 V

3.50 V

14.0 V

-13.7 V

-3.43 V

-1.37 V

-137.0 mV

143.0 mV

1.43 V

3.57 V

14.3 V

-14.3 V

-3.57 V

-1.43 V

-143.0 mV

137.0 mV

1.37 V

3.43 V

13.7 V

8. Repeat ste ps 3 through 8 for the second line of the table, then f or the res t of the line s of the ta ble f or channel 1.

9. In the Wav e form Selection menu, select Input channel 2. Delete channel 1 and insert channel 2. Repeat steps 2 through 8 for channe l 2, replacing channel 1 with channe l 2 where applicable.

3-8

HP 16532A - Performance Tests

3-10. OFFSET ACCURACY

This test verifies the offset accuracy.

Specification:

± (1.0% of chann e l offset + 2.0% of full scale)

Equipment Required:

The f ollowing equipment is required for the test. Procedures are base d on the model or part numbers recommended.

Recommended

Equipment Required Critical Specification

Model/ Part Number

DC Power Supply Digital Multime te r Cable Adapter

Procedure: Zero-Input Offset

1. Disconnect all cables and probes from the oscilloscope inputs. In the Waveform Selection menu delete channel 2. If channel 1 is not inserted, insert channel 1. Then set up the oscilloscope module according to the following parameters in the order given:

Menu Selection Setting

Channel

− 35.000 to + 35.000 Vdc, ± 1 mV resolution Better than 0.1% accuracy 50 Ω BNC (m to m) 48-i nch 50 Ω BNC (f) to Dual Banana Plug

Input Probe v/Div Offset Coupling s/Div

1 1:1 4 V 0 V 1 MΩ / DC 500 ns

HP 6114A HP 3458A HP 10503A HP 1251-2277

Trigger Display

2. With the DC power supply disconnected from the channel input, make sure the m a rke rs are ne ar the center of the display.

Mode Mode

Average # Grid Markers

Immediate Average

32 On On

3-9

HP 16532A - Performance Tests

3. Select RUN - REPETITIVE. Wait approximately 1 5 seconds (avera ging complete), then select ST OP. The display should read 0.00 V ± 320.0 mV as read from the markers voltage field. Record the reading in the performance test record.

4. In the Channel menu, change the vertical sensitivity to 1 V/Div. Select RUN - REPETITIVE and wait approximately 15 s econds (ave ra ging complete), then select ST O P. Th e displa y s h ould rea d 0. 00 V ± 80.0 mV. Record the reading in the performance test record.

5. In the Channel menu, change the vertical sensitivity to 100 mV/Div. Select RUN - REPETITIVE and wait approximately 15 seconds (avera ging complete), then select ST O P. Th e displa y s h ould rea d

0.00 V ± 8.0 mV. Record the reading in the performance test record.

6. In the Channel menu, change the vertical sensitivity to 10 mV/Div. Select RUN - REPETITIVE and wait approximately 15 seconds (avera ging complete), then select ST O P. Th e displa y s h ould rea d

0.00 V ± 800.0 µV . Record the reading in the performance test record.

DC Input Offset

Set the C ha nnel

Coupling

field to 1MΩ / DC or damage to the equipment will

result.

7. Use the BNC-to-banana adapter to connect the BNC cable between the power supply and channel 1 input. Monitor the power supply using a voltmete r.

8. Use the following table for the next steps:

V/Div Offs et Supply Min Max

1 V/Div 100 mV/Div 20 mV/Div 20 mV/Div 100 mV/Div 1 V/Div

9. In the Channel menu se t the V/Div range and offset per the first line of the table. Set the power supply per the first line of the table.

10. On the oscilloscope, select RU N - REPETITIVE and wait approximately 15 seconds (avera ging complete), then ST OP.

− 35.00 V

− 10.00 V

− 2.00 V

+ 2.00 V + 10.00 V + 35.00 V

− 35.00 V

− 10.00 V

− 2.00 V

+ 2.00 V + 10.00 V + 35.00 V

− 35.4 V

− 10.1 V

− 2.02 V

+ 1.98 V + 9.90 V + 34.6 V

− 34.6 V

− 9.90 V

− 1.98 V

+ 2.02 V + 10.1 V + 35.4 V

11. Read the voltage from the marke rs v oltage f ield. It should be within the limits given in the table. R ecord the reading in the performance test record.

12. Repeat steps 7 through 10 for the remaining lines of the table using the V/Div range, offse t, a n d supply voltages given in the table.

13. In the Channel menu sele ct channel 2. In the Waveform Selection menu delete channel 1 and insert channel 2.

14. Repeat ste ps 1 through 12 for channe l 2, replacing channel 1 with channe l 2 where a pplicable .

3-10

HP 16532A - Performance Tests

3-11. BANDWIDTH

This tes t checks the bandwidth of the oscilloscope module.

Specification:

Bandwidth (dc coupled) dc to 250 MHz

Equipment Required:

The f ollowing equipment is required for this test. Procedures are bas ed on the model or part number recommended.

Recommended

Equipment Required Critical Specification

Model/ Part Number

Signal Generator Powe r Meter/Sensor Power Splitter Cable Adapter

Procedure:

1. With the N cable, connect the si gna l ge n e r a tor to the power splitter in put. C onn e ct the power sens or to one output of the power splitter.

2. U s i ng a n N- to-B N C adapter, connect the other power splitter output to the Channel 1 in put of the oscilloscope module.

3. In the Waveform Selection menu delete channel 2. If channel 1 is not inserted, insert channel 1. Set the following parameters.

Menu Selection Setting

1 - 250 MHz at approx 170 mVrms 1 - 250 MHz ± 3 % accur acy Out put s diffe r by < 0.1 5 dB Ty pe N (m to m) 2 4-inch 50 Ω Type N (m) to BN C (m)

HP 8656B HP 436/8482A HP 11667B HP 11500B HP 1250-0082

Channel

Trigger

Display

Input Probe v/Div Offset Coupling s/Div

Mode Level

Mode Average # Grid Markers

1 1:1 80 mV 0 V 50 Ω / DC 200 ns

Edge 0 V

Average 32 On Off

3-11

HP 16532A - Performance Tests

4. Set the signal generator for 1MHz at − 2.4 dBm. On the oscilloscope, select RUN - REPETITIVE. The signal on the scree n s h ould be two cycles a t thre e divisions amplitude.

5. After the measurement settles (averaging complete, about 15 seconds), select STOP. In the Auto-Me asure menu note the V

reading. V

p-p

= __________ mV.

1MHz

6. S e t the power me ter C a l Factor % to the 1MHz va l ue from the calibration chart on the power splitter. Then press dB[REF] to set a 0 dB reference.

7. Change the signal generator to 250 MHz. Set power meter Cal Factor % to the 250 MHz value from the chart.

8. A djust the s i gnal gen e ra tor amplitude for a power rea ding as close a s possi ble to 0. 0 dB[REL]. Reading = __________ dB.

9. Se t the oscilloscope s/Div for 2 ns/Div and select RUN- REPETITIVE.

10. After the measurement settles (averaging complete), select STOP. In the Auto-Measure menu note the V

reading. V

p-p

= ________mV.

250MHz

11. Calculate the re s ponse us in g the formula:

250

response (dB

) = 20 log

Mhz

MHz

= 20

(_____) = ______

log

12. Correct the result from step 1 1 with any diffe re n ces in the power m e te r f r om ste p 8. O bserve si gns. For example:

R esult from step 1 1 = − 2.3 dB

Pow er mete r r eading = − 0.2 dB[RE L] then true re s ponse = (− 2.3) − (− 0.2) − 2.1dB

(__________) − (__________) = ____________ dB

13. The result fr om ste p 1 2 should be ≤ − 3.0 dB. Record the result in the Performance Test Record.

14. In the Channel menu select channel 2. In the Waveform Selection menu delete channel 1 and insert channel 2.

15. Repeat ste ps 2 through 14 for channe l 2, replacing channel 1 with channe l 2 where a pplicable .

Note

F a ilure of the bandwidth test can be caused by a fa u lty at tenua tor or main assembly.

3-12

HP 16532A - Performance Tests

3-12. TIME MEASUREMEN T ACCURACY

This te s t us e s a precise frequency source to check the accuracy of time measurement functions.

Specification:

−

± [(0.005% x ∆t) + (2 x 10

Equipment Required:

The f ollowing equipment is required for this test. Procedures are bas ed on the model or part number recommended.

Equipment Required Critical Specification

x delay se tting) + 150 ps]

Recommended

Model/ Part Number

Signal Generator Cable Adapter

200 MHz, timebase accuracy 0.25 ppm 50 Ω BNC (m to m) 48-inch 50 Ω Type N (m) to BN C (f)

HP 8656B Opt. 001 HP 10503A HP 1250-0780

Procedure:

1. Set the signal generator to 181.81818 MHz (5.5 ns period) and approximately 600 mV rms.

2. Use the N-to-BNC adapter to connect the cable to the signal generator. Connect the free end of the BNC cable to the channel 1 input.

3. In the Wav e form Selection menu delete channel 2. If channel 1 is not inserted, insert channel 1. Set the following parameters in the order given:

Menu Selection Setting

Channel

Input Probe v/Div Offset Coupling s/Div

1 1:1 400 mV

0.0 V 50 Ω / DC

2.00 ns

Trigger

Display

Mode Source Level Slope

Mode Grid

Edge Chan 1

0.0 V Positive

Normal On

3-13

HP 16532A - Performance Tests

4. Se le ct the Markers Auto menu, and set the following parameters:

Menu Selection Setting

Markers Auto

5. Se le ct DONE. On the oscilloscope module select RUN - REPETITIVE. If the waveform is clipping, reduce the signal ge n e ra tor output voltage level until the waveform no longer clips. All ow the oscilloscope module to run approximately two minutes, the n s elect ST O P.

6. In the statistics fiel d, check to see tha t the M EAN X-O fie l d is a pproximately 5.500 ns. Check that both the MIN X -O and the MA X X-O a re within 150 ps of the MEAN X-O. Record the results in the performance test record.

7. Se le ct the Markers Auto menu, and set the following parameters:

Menu Selection Setting

X →

O→

Statistics

Set on cha n 1 at Level 50% Slope Positive Occur 1

Set on cha n 1 at Level 50% Slope Positive Occur 2

Markers Auto

8. Sele ct DONE. In the Display menu, set MODE AVERAGE #8 and DEL AY 99.00 ns. Select R U N-REPE TITIV E and allow the oscilloscope module to run approximately two minutes. Select ST O P.

9. In the statistics fiel d, check to see tha t the M EAN X-O fie l d is a pproximately 99.000 ns. Check that both the MIN X -O and the MA X X-O a re within 155 ps of the MEAN X-O. Record the results in the performance test record.

X → O→

Statistics

Manual Set on cha n 1

at Level 50% Slope Positive Occur 1

Note

Failure of the time measurem ent accuracy test can be caused by a defective main assem bly.

3-14

HP 16532A - Performance Tests

3-13. TRIGGER SENSITIVITY

Th is te s t checks chan ne l triggers for sensitivity a t rate d ban dwidth.

Specification:

dc to 50 MHz : 0.063 x full scale (0.25 division) 50 to 250 MHz : 0.125 x full scale (0. 5 divis i on)

Equipment Required:

The f ollowing equipment is required for this test. Procedures are bas ed on the model or part number recommended.

Recommended

Equipment Required Critical Specification

Model/ Part Number

Signal Generator Cable Adapter

50 and 250 MHz, 30-80 mV 50 Ω BNC 48-inch 50 Ω Type N (m) to BN C (f)

rms

output

HP 8656B Opt. 001 HP 10503B HP 1250-0780

Procedure:

1. In the Wav e form Selection menu delete channel 2. If channel 1 is not inserted, insert channel 1. On the oscilloscope module set the following parameters in the order given:

Menu Selection Setting

Channel

Trigger

Input Probe v/Div Offset Coupling s/Div

Mode Source Level

1 1:1 400 mV 0 V 50 Ω / DC 20 ns

Edge Chan 1 0 V

Display

Mode Average # Grid Markers

Average 8 On Off

2. With an N- to-B N C adapter and BNC cable, connect the signa l ge n e r a tor to channe l 1 input.

3-15

HP 16532A - Performance Tests

3. Se t the signal generator for a 50 MHz a nd 35 mV rms signal. On the oscilloscope module select RUN - REPETITIVE.

4. In the Auto-Measure menu read V close to and not more than 100 mV

. Adjust the signal generator output level so that the signal is

p_p

5. In the Trigger menu a djust the trigger lev el for a stable displa y. The test passe s if the trigger is stable. Record whether the trigger is sta ble or is n ot stable.

6. On the oscilloscope module select STOP. Se t the signal generator frequency to 250 MHz and 70 mV rms signal level.

7. In the Channel menu change s/Div to 5 ns/Div and select RUN.

8. In the Auto-Measure menu read V close to and not more than 200 mV

. Adjust the signal generator output level so that the signal is

p_p

9. In the Trigger menu a djust the trigger lev el for a stable displa y. The test passe s if the trigger is stable. Record whether the trigger is sta ble or is n ot stable in the performance te s t re cord.

10. On the oscilloscope module select STOP. In the Channel menu sele ct channel 2. In the Trigger menu select Source channel 2. In the Waveform Selection menu delete channel 1 and insert channel 2.

11. Repeat ste ps 1 through 9 for channel 2 , r e placing channe l 1 with channel 2 w h e r e applicable.

Note

Failure of the trigger sensitivity t est can be caused by a defective m ain assembly.

3-16

HP 16532A - Performance Tests

Hewlett-Packard

Table 3-1. Performance Test Record

Tested by ______________________________ Model 16532A Oscilloscope Module Serial No.: ____________________

R ecommended Pe rf ormance V e rif ication Inte rv a l:

12 M onths

Work Order No. _________________________

Date Tested ____________________________

Paragraph No. Test Results

3-6 DC CAL OUTPUT

5.000Vdc

3-7 AC CAL OUTPUT

3-8 Input Resistance

0.8Vp_p 1000Hz

Ω± 0.5Ω (49.5 to 50.5Ω)

50 1M

Ω± 10KΩ (0.990 to

1.010M

± 10mV

± 10%

Ω)

Minimum Maximum Actual

4.990Vdc 5.010Vdc ____________Vdc

Minimum Maximum Actual

0.72Vp_p 0.88Vp_p ____________Vp_p

Minimum Maximum Actual

900Hz 1100Hz ____________Hz

Channel 1 Reading

Ω @ 20mV/Div _____________Ω

Ω @ 20mV/Div _____________Ω Ω @ 200mV/Div _____________Ω

Ω @ 200mV/Div _____________Ω

Ω @ 1V/Div _____________Ω Ω @ 1V/Div _____________Ω

Ω @ 4V/Div _____________Ω

3-9 Voltage Measurement Accuracy

Upper Limit Lower Limit

-13.7V -14.3V

-3.43V -3.57V

-1.37V -1.43V

-137.0mV -143.0mV

143.0mV 137.0mV

1.43V 1.37V

3.57V 3.43V

14.3V 13.7V

Channel 2 Reading

Ω @ 20mV/Div _____________Ω

Ω @ 200mV/Div _____________Ω Ω @ 200mV/Div _____________Ω

Ω @ 1V/Div _____________Ω

Ω @ 1V/Div _____________Ω Ω @ 4V/Div _____________Ω

Ω @ 4V/Div _____________Ω

Channel 1

Zero Input Measured Actual

__________ __________ __________V

__________ __________ __________mV

__________ __________ __________V

3-17

HP 16532A - Performance Tests

Ta ble 3-1. Performance Test Record (Continued)

Paragraph No. Test Results

3-9 Voltage Measurement Accuracy

(continued) Upper Limit Lower Limit

-13.7V -14.3V

-3.43V -3.57V

-1.37V -1.43V

-137.0mV -143.0mV

143.0mV 137.0mV

1.43V 1.37V

3.57V 3.43V

14.3V 13.7V

3-10 Offset Accuracy

Zero-input Offset-Channel 1

Offset Accuracy DC Input Offset-Channel 1

Channel 2

Zero Input Measured Actual

__________ __________ __________V

__________ __________ __________mV

__________ __________ __________V

V/Div Setting Reading Actual

4V/Div 0.00V

1V/Div 0.00V

100mV/Div 0.00V

10mV/Div 0.00V

Supply Min Max Actual

-35.00V -35.4V -34.6V -__________V

-10.00V -10.1V -9.90V -__________V

-2.00V -2.02V -1.98V -__________V

+2.00V +1.98V +2.02V +__________V

+10.00V +9.90V +10.1V +__________V

+35.00V +34.6V +35.4V +__________V

± 320.0mV ___________V ± 80.0mV ___________V ± 8.0mV ___________V ± 800.0µV ___________V

Offset Accuracy Zero-input Offset-Channel 2

Offset Accuracy DC Input Offset-Channel 2

3-11 Bandwidth

≤−3.0dB

V/Div Setting Reading Actual

4V/Div 0.00V

1V/Div 0.00V

100mV/Div 0.00V

10mV/Div 0.00V

Supply Min Max Actual

-35.00V -35.4V -34.6V -__________V

-10.00V -10.1V -9.90V -__________V

-2.00V -2.02V -1.98V -__________V

+2.00V +1.98V +2.02V +__________V

+10.00V +9.90V +10.1V +__________V

+35.00V +34.6V +35.4V +__________V

Channel 1:

Actual Reading= ________ dB

Channel 2:

Actual Reading = ________ dB

± 320.0mV ___________V ± 80.0mV ___________V ± 8.0mV ___________V ± 800.0µV ___________V

3-18

HP 16532A - Performance Tests

Ta ble 3-1. Performance Test Record (Continued)

Paragraph No. Test Results

3-12 Time Measurement Accuracy

5.500ns

99.00ns

3-13 Trigger Sensitivity Channel 1:

± 150ps

± 155ps

MEAN X-O __________ns

MIN X-O __________ns

MEAN X-O - MIN X-O = _________ps

MAX X-O __________ns

MAX X-O - MEAN X-O = _________ps

MEAN X-O __________ns

MIN X-O __________ns

MEAN X-O - MIN X-O = _________ps

MAX X-O __________ns

MAX X-O - MEAN X-O = _________ps

Trigger Stable @ 100mVp_p Yes ____ No ____

Trigger Stable @ 200mVp_p Yes ____ No ____

Channel 2:

Trigger Stable @ 100mVp_p Yes ____ No ____

Trigger Stable @ 200mVp_p Yes ____ No ____

3-19

3-20

TABLE OF CONTENTS

Calibration

4-1 . I ntroduction..........................................................................................................................4-1

4-2. S a fe ty R e quirements............................................................................................................4-1

4-3. Ca libration Interval...............................................................................................................4-1

4-4 . M aintaining System Integrity...............................................................................................4-1

4-5 . Calibration Protection Switch..............................................................................................4-1

4-6. Recommended Test Equipment .........................................................................................4-2

4-7 . I ns trument Warmup.............................................................................................................4-2

4-8. Ca libration............................................................................................................................4-2

4-9 . Setting the PROTE C T/UNPR O TECT Switch to UNPROTECT...........................................4-3

4-10. Equipment Required for Calibration...................................................................................4-4

4-1 1. Loading the D efault Calibration Factors............................................................................4-4

4-12. Self Cal Menu Calibrations .................................................................................................4-5

4-1 3. Setting the PR O TEC T/UNP ROTECT Switch to PROTECT................................................4-8

4-14. Sealing the Mainframe........................................................................................................4-8

HP 16532A - Calibration

SECTION IV

Calibration

4-1. Introduction

This section provides information on calibrating the HP 16532A 1 GSa/s Oscilloscope module. Information is included about when to calibrate the module, the module warm up interval re quired prior to calibration, and how to do the actual calibration of the module. Also included are safe ty requirements to observe when working on the equipment, a list of recommended test equipment, and equipment setups for the different calibration procedures. Although the module has no hardware adjustments, it does contain a calibration PROTECT /U NPRO TECT switch that you use before and afte r calibration. Actual calibration of the module is performed in software.

4-2. Safety Requirements

Rea d the safety summary at the front of this manua l be fore a ny r e placement, m ainte nance, or repair is performed.

• The oscilloscope software changes revision

number and asterisks (*) are on the calibration menu.

• Ambient temperature changes more than

10 °C.

If you add or delete a card(s) from a calibrated multicard oscilloscope module, you must perform the T ime Null calibration.

4-4. M aintaining System Integrity

Calibration factors depend on the mainframe, module, and module configuration all staying together. If oscilloscope modules are interchanged between ma inf ra me s , or the oscilloscope module slot configuration is changed, calibration must be repea te d. In a n environment in which the possibility of sharing oscilloscope modu les exists, H ewlett- Packard recommends taking the following precautions in order to maintain s yste m inte grity:

4-3. Calibration Interval

To mainta in proper calibration, perform calibration at approximately six-month interv a l s, or every 1000 hours, when the in s trume nt is be i ng used under normal operating conditions. Immediate calibration is required if one of the following occurs:

• Oscilloscope module is installed, repaired, or

replaced, or if the card slot configuration is changed.

With the s yste m turne d off, place the PROT ECT /UN P ROTE C T switch (all switches in a single or a chained, multiple oscilloscope module configuration) in the UNPROT ECT position.

Boot th e sys tem an d pe rform cal i br a t i on f or each module.

Turn off the s ys te m, pla ce the PROT ECT /UN P ROTE C T switch (all switches in a single or a chained, multiple oscilloscope module configuration) in the PROTECT position, then seal the mainfra me .

4-5. Calibration Protection Switch

Each HP 16532A board stores the calibration factors for that board in non-volatile RAM on the board itself. The HP 16532A board contains a calibration protection (PROT E CT/UNPR OTEC T) switch. W ith the s witch in the PRO TECT position, calibration values can not be chan ged.

4-1

HP 16532A - Calibration

To run the s cope calibration, the switch must be i n the UNPROTECT position. When you have more than one HP 16532A board in a mainframe, this mus t be done for each one of the boards. After calibration is complete, all the switches must be set to the P ROTECT position to save the calibration values. A ls o, all the modules or filler panels must be re ins talled in the mainframe, the n a seal should be placed on the equipment such that the seal touches both the top-most module and the mainfra me . This is done to assure tha t calibration integrity is maintai ne d.

4-6. Recomme nded Test Equipment

Th e only tes t equipment required for calibration are cables and adapters. These are listed in paragraph 4-10 and are called out in the applicable calibration p r ocedur e.

4-7. Instrument Warmup

Calibrate the oscilloscope module at its environmental a mbient temper ature , af te r a 30- minute w a rmup period of the HP 16500A/16501A mainframe with the module installed.

4-8. Calibration

This s ection provides software calibration procedures for the HP 16532A oscilloscope module. There a re no hardware adjustments on the oscilloscope module. The calibration is performed without access to the inte rior of the instrument.

Wh e n ordered with a system, oscilloscope modules are calibrated at Hewlett-Packard as single units (not chained together). If you ne e d to use the modules as one unit (chaine d together), perform the Time Null C a l ibration in section 4-1 2 .

The calibration procedure sets the oscilloscope calibration factors and stores them in non-volatile RA M on the board. The procedures use signals generated in the oscilloscope module itself to calibrate cha nn el sensitivity, offse t, and trigger parameters. The calibration factors set up the module each time the instrument is turned on.

Th e cal ibration procedures in this section should be followed in their entirety an d in the se quence listed in table 4-1. Though in this section the default ca li brations are loaded before cal i bration, calibration can be done without loading them. However, if they are loaded, they should be loaded before an actual calibration is done.

Wh e n calibrating the module, it must be instal le d in the mainframe, and the mainframe covers and filler pan els m u st be in place. The modu l e mus t be warmed up (refe r to " I ns trume nt Warmup" give n earlie r in this s e ction).

Calibration procedures require the use of cables and adapte rs only. N on-s ervice personne l can perform the cali br ation, however, t o do t h e calibration, it is necessary to unprotect the current calibration values. T his may not be allowed in some circumstances − check with your Cal ibra tion La borat ory or Se rv ice D e pa rtme nt before you attempt calibration. To perform calibration, follow the "Se lf C al Menu Calibration" procedures give n l a te r in this s e ction.

Table 4-1. Calibration Sequence

Sequence Calibration Paragraph

1 2

3 4

5 6 7 8

4-2

Se t the PRO TEC T/UNPROTECT Switch to UNPROT ECT Default (Not required as part of the calibration procedures) Self Cal Menu V ertical Calibration (a ll cha n n e ls) Delay Calibration− Cha nnel 1 Delay Calibration− Cha nnel 2 Time Null C alibration (all channels) Logic Trigger - Channel 1 External Trigger Null Calibration Se t the PRO TEC T/UNPROTECT Switch to PR O TEC T

4-9

4-11 4-12

4-12 4-12 4-12 4-12 4-12 4-13

HP 16532A - Calibration

4-9. Setting the PROTECT/UNPROTECT Switch to UNPROTECT

The effects of ELECTR OST ATIC D ISCHARG E can damage electronic components. U se grounded wrist straps and mats when you are performing any kind of service on this module.

The oscilloscope board contains a calibration PROTECT /U NPROTEC T switch. This s witch must be se t to UNPROTEC T before calibration can be done. Set the switch to UNPROTECT a s f ollows:

1. Remove power from the instrument. Pull halfwa y out all of the modules l ocated above the oscilloscope and remove the filler panels and cards located above the oscilloscope. See figure 4-1 for the removal sequence.

Figure 4-1. Endplate Ov erlap - Top Sequence

2. Remove the oscilloscope module and set the P ROTEC T/UNPROTEC T switch to the UNPROTECT position. See Figure 4-2 to locate this switch.

Figure 4-2 . L ocation of the P ROTECT/U NPROTECT Switch

3. Repeat step 2 for ev e ry oscilloscope module if this is a multimodule calibration.

4. Reinstall the modules and filler panels in reverse order of steps 1 and 2.

4-3

HP 16532A - Calibration

4-10. Equipment Required for Calibration

The equipment listed below is required for calibration: Cable (2) 50Ω BNC, 9-inch (equal length) HP 10502A

Cable 50Ω BNC - SMB HP 16532-61601 Adapter 50Ω BNC te e (m)(f)(f) HP 1250-0781 Adapter 50Ω BNC (m)(m) HP 1250-1236

4-11. Loading the Default Calibration Factors

Once the default calibration factors are loaded, all calibrations must be done. Th is includes all of the calibrations in the Self Cal menu. T he calibration must be performed in the exact sequence listed in table 4-1.

Note

T h e calibr ation PRO TE CT/ UNPROT ECT switch on t h e os cilloscope boar d mu st be set to UNPRO TE C T.

Load the def ault calibration factors as f ollows:

1. Touch the menu field (top row, second from the left), then select Calibration from t h e pop-up m enu.

2. Touch the Mode field, then select Service Cal from the pop- up menu.

3. Touch the Procedur e field, then select Default Values from the pop-up me n u .

Note

A ft er you touch the St a rt field, you can abort the calibration procedure either by touching the Cancel field, if it is available in the menu, or by touching either the Mode or Procedure fields if the continue field is still displayed on the s creen.

4. Touch the Start field and follow the instructions on the display. The displa y s h ould now look similar to the display shown in figure 4-3.

4-4

Figure 4-3. Default Calibration Display

HP 16532A - Calibration

4-12. Self Cal Menu Calibrations

Note

Messages will be displaye d as each calibration routine is completed to indicate calibration has passed or faile d. The resulting calibration factors are a utomatically s tored to nonvolatile RAM at the conclusion of each calibration routine.

Th e Self Ca l m e nu le ts you calibrate v e rtical s e n s itiv ity (Vert Ca l) f or channe ls 1 a n d 2 indiv idua lly or both channels on a board simultane ously if it is a s ta n d al one s cope. A ls o, the Self Cal menu lets you calibrate delay (De la y) for channel 1 a nd 2 separately, then Time Null for each channel se para te ly (except channel 1 of the ma ster board), and Ext Trig Null for the e xte rna l trigger (E CL).

Calibrate Vert Cal of the Self Cal menu as follows:

1. Connect two BNC 50-Ω, 9-inch cables to the BNC tee adapter.

Note

When you touch Sta rt, the instrument will prompt you to connect the cables to the appropria te locations on the re ar pan el of the module.

2. Touch the Mode field, then select Self Cal from the pop-up menu.

3. Touch the Procedur e field, then select Vert Cal from the pop-up m enu.

4. Touch the Channel field, t h en select a chan nel choi ce from t h e pop-up menu.

5. Touch the Start field and follow the instructions on the display.

6. After completion of vertical calibration remove the ca ble s f rom the re ar panel of the oscilloscope.

Calibrate Delay of the Self Cal menu as follows:

1. Obtain a BNC 50-Ω, 9-inch cable.

Note

When you touch Sta rt, the instrument will prompt you to connect the cable to the appr opr iate locat ion on the re ar pan el of the module.

2. Touch the Procedur e field, then select Delay fr om the pop- up menu .

4-5

HP 16532A - Calibration

3. Touch the Channel field, then select S1 from t h e pop-up m enu (where S is the slot letter where the oscilloscope module is installed in the mainframe).

4. Touch the Start field and follow the instructions on the display.

5. After completion of channel 1 delay calibration, remove the cable from the rear panel of the oscilloscope.

6. Repeat steps 3 through 5 f or chann e l S2.

7. A f te r completing all of the channel dela y calibrations, remove the cable from the rear panel of the oscilloscope.

Calibrate the Time Null of the Self Cal menu as follows:

1. Connect two BNC 50-Ω, 9-inch cables to the BNC tee adapter.

Note

When you touch Sta rt, the instrument will prompt you to connect the cables to the appropria te locations on the re ar pan el of the module.

2. Touch the Procedur e field, then select Time Null f rom the pop-up me n u .

3. Touch the Channel field, then select S2 from t h e pop-up m enu (where S is the slot letter where the oscilloscope module is installed in the mainframe).

4. Touch the Start field and follow the instructions on the display.

5. Repea t s te ps 3 through 4 for each channel, re pla cing S2 with the appropriate channe l number.

6. A t the conclusion of the time null calibration, remove the cables f rom the rear of the module.

Calibrate the Logic Trigger of the Self Cal menu as follows:

1. Obtain one BNC 50 Ω 9-inch cable.

Note

When you touch Sta rt, the instrument will prompt you to connect the cables to the appropria te locations on the re ar pan el of the module.

2. Touch the Procedur e field, then select Logic Trigger from the pop- up menu.

3. Touch the Start field, then follow the ins tructions on the display.

4. A t the conclusion of the Logic Trigger calibration, remove the cable from the rear of the module.

4-6

HP 16532A - Calibration

Calibrate the Ext Trig Null of the Self Cal menu as follows:

1. Connect the cables, BNC adapter, and BNC tee adapter together as shown in figure 4-4.

Note

When you touch Sta rt, the instrument will prompt you to connect the cables to the appropria te locations on the re ar pan el of the module.

Figure 4-4. Ext Trig Null Calibration Connections

2. Touch the Procedur e field, then select Ext Trig Null fr om t h e pop-up m enu.

3. Touch the Start field and follow the instructions on the display.

4. A t the conclusion of the ext trig null calibration, remove the cables f rom the rear of the module.

This is the conclusion of the calibration procedures. Th e display sh ould now look similar figure 4-5 .

4-7

HP 16532A - Calibration

Figure 4-5. End of Calibration Display

4-13. Setting the PROTECT/UNPROTECT Switch to PROTECT

The effects of ELECTR OST ATIC D ISCHARG E can damage electronic components. U se grounded wrist straps and mats when you are performing any kind of service on this module.

Th e PR OTECT /U NPRO TEC T switch must be se t to PROTECT a fter calibration is finished. S et the switch to PROTECT a s follows:

1. Remove power from the instrument. Pull the modules located above the oscilloscope halfwa y out, then remove the filler panels and cards located above the oscilloscope. See figure 4-6 for the removal sequence.

Figure 4-6. Endplate Ov erlap - Top Sequence

2. Remove the oscilloscope module and set the P ROTEC T/UNPROTEC T switch to the PR O TEC T position. See Figure 4-2 to locate this switch.

3. Repeat step 2 for each module calibrated.

4. Reinstall the modules and filler panels in reverse order of steps 1 and 2.

4-14. Sealing the Mainframe

Afte r cali bration has be en completed, the mainframe should be sealed to protect the integrity of the system. Place a seal on the equipment such that the seal touches both the top-most module (or filler panel) an d the mainf ra me .

4-8

TABLE OF CONTENTS

Replaceable Parts

5-1 . I ntroduction .......................................................................................................................... 5-1

5-2. A bbreviations ....................................................................................................................... 5-1

5-3. Replaceable Parts List ......................................................................................................... 5-1

5-4. Ordering Information ........................................................................................................... 5-1

5-5. E xchange Assemblies ......................................................................................................... 5-1

5-6. Direct Mail Order System .................................................................................................... 5-2

HP 16532A - Replaceable Parts

SECTION V

Replaceable Parts

5-1. Introduction

Th e service policy for this instrument is replacement of defective asse mblies. This service manua l contains information for finding a defective assembly.

This s ection contains parts an d ordering information for the HP 16532A Oscilloscope Module. Ta ble 5 - 1 lists the refere nce desi gnator and abbrevia tions us ed throughout this manual. Ta ble 5 - 2 lists all replacea ble parts by refe re nce designator.

5-2. Abbreviations

Table 5-1 lists a bbrevi a tions used throughout the manual. In some cases two forms of the abbreviations a re used, one in all capital letters, the other partially or not capitalize d. T his wa s done because the abbreviations i n the parts l ist a r e always all capitals. However, in other parts of the manual other a bbrevi ation forms a re use d with both lower and uppercase letters.

5-3. Replaceable Parts List

Table 5-2 lists replaceable parts and is organized as follows:

Th e information given f or ea ch part consists of the following:

• Complete refe re nce des ignation.

• Hewlett-Packard part number.

• Total quantity.

• Des cr iption of part.

• Check digit.

Th e total quantity f or each part is only given once at the first appeara nce of the part number in the list.

5-4. Ordering Information

T o order a part listed in t h e replaceable parts t able, quote the Hewlett-Pa ckard part number, check digit, indicate the quantity re quired, and address the order to the nearest Hewlett-Packard office.

T o order a part that is not list ed in th e repl acea ble parts table, include the ins trume nt model number, instrument seria l number, the des cription and function of the part, and number of parts required. Address the order to the nearest Hewlett-Packard office.

• Exchange as s emblies in alphanumerical

order by reference des ignation.

• Electrical asse mblies in al phanume rical order

by reference designation.

• Chassis-mounted parts in alphanumerical

order by reference des ignation.

5-5. Exchange Assemblies

Exchange assemblies are available when a repairable a ssembly is returned to Hewlett-Packard. These assemblies have been set up on the "Exchange Assembly" program. T his allows the customer to exchange the f aulty ass e mbly with one tha t has be e n re pa ire d, calibrated, and perfor m ance verified by t h e factory. The cost is si gnifica ntly l ess than that of a new a s s e mbly.

5-1

HP 16532A - Replaceable Parts

Exchange assemblies are listed in a separate section in the replaceable parts table. They have a part number in the form XXXXX-695XX (whe re the new parts would be XXXXX-665XX). Before ordering an "exchange assembly," check with your local parts or r e pair orga n i zati on f or pr oce du r e s.

5-6. Direct Mail Order System

Within the USA, H e w lett-Packard can su pply parts through direct mail order. Th e advantages a re as follows:

• Direct ordering and shipment from

Hewlett-Packard Parts C enter in Mountain Vi e w, California.

• No maximum or minimum on any mail order

(there is a minimum order for parts ordered through local Hew le tt-Packard offices whe n orders require billing and invoicing).

• Prepaid transportation (there is a small

handling charge for each order).

• No invoices - to provide these advantages,

che ck or m oney o r der mu st accom pany each order .

Mail order forms an d specific ordering information are a v a i la ble through your local Hewlett-Packard offices.

5-2

HP 16532A - Replaceable Parts

Ta ble 5- 1 . Reference Designator and Abbreviat ions

REFERENCE DES IGNATOR

A B BT C CR

DL DS E

A A/D AC ADJ AL AMPL ANLG ANSI

ASSY ASTIG ASYNCHRO ATTEN AWG BAL BCD BD BFR BIN BRDG BSHG BW C

CAL CC CCW CER CFM CH CHAM CHAN CHAR CM CMOS

CMR CNDCT

CNTR CON CONT CRT CW D D/A DAC

DARL DAT DBL DBM

DC DCDR DEG DEMUX DET DIA DIP DIV DMA DPDT

DRC DRVR

=assembly = fan;motor = battery = cap acitor = diode;diode thyristor; varactor = delay line = annunciator;lamp;LED = misc. electrical part

= amperes = an alog-to-digital = alternating current = adjust(ment) = aluminum = a m plifier = an alog = American National Standards Institute =assembly = a stigmatism = asynchronous = attenuator = American wire gauge = balance = binary-code decimal = board = buffer = binary = bridge = bushing =bandwidth = ceramic;cermet (resistor) = calibrate;calibration = carbon co mposition = counterclo ckwise = ceramic = cubic feet/minute =choke = chamfered = channel = character = centimeter = complementary metal oxide-semiconductor = common mode rejec tion = conductor = counter = connector = contact = cathode-ray tube = clockwise = diameter = digital-to-analog = digital-to-analog converter = darlingto n = data = double = d ecib el reference d to 1mW = direct current = decoder = degree = demultiplexer = detector = diameter = dual in-lin e package = division = direct memory access = double-pole, double-throw = DAC refresh controller = driver

F FL H J

L MP P

DWL ECL ELAS EXT F

FC FD

FEM FF FL FM FR FT

FW FXD GEN GND GP GRAT GRV H HD HDND HG HGT HLCL HORIZ HP HP-IB

HR HV HZ I/O IC ID IN INCL INCAND INP INTEN INTL INV JFET

JKT K L LB LCH LCL LED

LG LI LK LKWR LS LV M

MACH MAX

=fuse = filter = hardware = electrical connecto r (stationary portion);jack = c oil;inducto r = misc. mechanical part = electrical connecto r (moveable portion);plug

ABBREVIATIONS

= dowel = emitter coup l e d logic = elastomeric = external = farads;metal film (resistor) = carbon film / compo sition = feed = female = flip-flop = flat = foam;from = front = gain bandwidth product = full wave = fixed = generator = ground(ed) = general pu rpose = graticule =groove = henries;high = hardware = hardened = mercury = height = helical = horizontal = Hewlett-Packard = Hewlett-Packard Interface Bus = hour(s) = high voltage = Hertz = input/output = integrated circuit = inside diameter =inch = in clud e(s) = i n can descent = input = intensity = internal = inverter = j unction field effect transistor = jacket = kilo(103) =low = pound = latch = lo cal = light-emitting diode =long = lithium = lock = lockwasher = low power Schottky = l o w voltage = mega(106);me gohms; meter(distance) = machine = maximum

Q R

RT S T TB TP

MFR MICPROC MINTR MISC MLD MM MO MTG MTLC MUX MW N NC NMOS

NPN NPRN

NRFR NSR NUM

OBD OCTL OD OP AMP OSC P P/O PC PCB PD PF PI PL PLA

PLST PNP

POLYE POS POT POZI PP PPM PRCN PREAMP PRGMBL PRL PROG PSTN PT PW PWR R-S RAM

RECT RET RF RGLTR RGTR RK RMS

= transistor;SCR; triode thyristor = resistor = thermistor = switch;jumper = transformer = terminal board = test point

= manufactu rer = microproce ssor = miniature = m i scellaneou s =molded = m illimeter = metal oxide = mounting = metallic = multiplexer = milliwatt = nano(10-9) = no connection = n-chann el metal oxide-semiconductor = negative-positive negative = neoprene = not recommend ed for field replacement = not separately replaceable = numeric = order by description = octal = outside diameter = operational amplifier = oscillator = p lastic = part of = printed circu i t = printed circuit board = power dissipation = picofarads =plug in = plate(d) = programmabl e logic array = p lastic = positive-negative positive = polyester = positive;position = potentiometer = pozidrive = peak-to-peak = parts per million = precision = preamplifier = programmable = parallel = programmable = position = point = potted wirewound = power = reset-set = random-access memory = rectifier = retainer = radio frequency = reg ulator = register = rack = root-mean-square

U V VR W

X Y

RND ROM RPG RX S

SCR SEC SEG

SEL SGL SHF SI SIP

SKT SL SLDR SLT SOLD SPCL SQ SREG SRQ STAT STD SYNCHRO TA TBAX TC TD THD THK THRU TP TPG TPL TRANS TRIG TRMR TRN TTL TX U UL

UNREG VA VAC VAR VCO

VDC VERT VF VS W W/ W/O WW XSTR ZNR oC

oF oK

= integrated circuit; microcircuit = electron tub e; glow lamp = voltage regulator; breakdown diode = cable =socket = crystal unit(piezo electric or quartz)

= Round = read-only memo ry = rotary pulse generator = receiver = Sch ottky-clamped; seconds(time) = screw;silicon controlled rectifier = second(time);seco n dary =segment = selector =single = shift = silicon = sin gle in-line package = skirt = slide =solder = slot(ted) = solenoid = special = square = shift register = service requ est = static = standard = synchronous = tantalum = tu beaxial = temperature coefficient = time delay = thread(ed) = thick = through = test point = tapping = triple = transformer = trigger(ed) = trimmer = turn(s) = transistor-transistor = transmitter = micro(10-6) = Underwriters Laboratory = unregulated = voltampere = volt,ac = variable = voltage-controlled oscillator = volt,dc = vertical = voltage,filtered = versus = watts = with = without = wirew ound = transistor =zener = degree Celsius (Centigrade) = degree Fahrenheit = degree Kelvin

5-3

HP 16532A - Replaceable Parts

5-4

Figure 5-1 . Parts Identification

HP 16532A - Replaceable Parts

Table 5-2. Replaceable Parts List

Reference HP Part C Qty Desc ri ption Mfr Mfr Part Designator Number D Code Number

16532-69501 2 1 Board Exchange Assembly

A1 16532-66501 6 1 Board Assembly

A2 16532-63401 9 2 Attenuator Assembly H1 16500-22401 5 2 Endplate Thumbscrew

H2 0510-0684 9 2 Thumbscrew Retaining Ring H3 1250-2075 5 4 Nut, Hex, 1/2-inch, RF Connector H4 _________ 2 Nut, Hex, RF Connector (Included with W2) H5 _________ 2 Washer, RF Connector (Included with W2) H6 0515-0430 3 3 Endplate Screw H7 0515-1246 1 4 Attenuator Retainer Screw

MP1 16532-40501 2 1 Rear Panel MP2 16500-29101 6 1 Ground Spring MP3 16532-94301 3 1 ID Label

W1 16532-61601 7 1 Master-Slave Trigger Cable W2 16532-61602 8 1 External Trigger Cable

(does not include attenuator assemblies)

5-5

5-6

TABLE OF CONTENTS

Service

6-1 . I ntroduction ......................................................................................................................... 6-1

6-2. S a fe ty R e quirements ........................................................................................................... 6-1

6-3. Recommended Test Equipment ........................................................................................ 6-1

6-4. Module Block Diagram and Theory of Operation............................................................... 6-1

6-5. A ttenuator Theory of Operation ......................................................................................... 6- 1

6-6. Main A s se mbly Theory of Operation .................................................................................. 6-1

6-7. S e lf-Tests ............................................................................................................................. 6-4

6-8. Troubleshooting .................................................................................................................. 6-10

6-9. Oscilloscope Module R e moval and R e placement ............................................................ 6-18

6-10. Trigger Cable Removal and R e placement ......................................................................... 6-20

6-11. Attenuator Removal and Replacement .............................................................................. 6-21

HP 16532A - Service

SECTION VI

Servic e

6-1. Introduction

Th e service policy for this instrument is replacement of defective asse mblies. This service manua l contains information for finding a defective ass e mbly. This se ction contains information for servicing the HP 16532A Oscilloscope Module. In cl uded are a block lev el th eory and procedur es for self diagnostics and troubleshooting. If the module or a cable is determined fa ulty, procedures are provided for module and cable replacement.

6-2. Safety Requirements

6-3. Recomme nded Test Equipment

Table 1-3 lists recommended test equipment. Any equipment that sa tisf ie s the critical specification given in the table may be su bstitute d for the recommended models.

6-5. Attenuator Theory of Operation

Th e chan n e l signals are conditioned by the attenuator/preamps, thick film hybrids containing passive attenuators, impedance converters, and a programmable amplifier. The channe l s ensitivity defaults to the s ta ndard 1- 2-4 se quence (other sens itiv itie s can be set also). Howev e r, the firmware us e s pa s s iv e attenuation of 1, 5 , 2 5, and 125, with the programmable pre amp, to cover the entire s ensitivity ran ge.

The input has a selectable 1 MΩ input impedance with ac or dc coupling or a 50Ω input impedance with dc coupling. Compensa tion for the pas s iv e atten uators is las er trimmed and is not adjustable. Afte r the pa s sive atten u a tors, the signal is split into high-frequency and low-frequency components. Low frequency components are amplified on the main assembly, where they are combined with the offset voltage. T he a c coupling is implemented in the low frequency amplifier.

The high- and low-frequency components of the signal are recombined and applied to the input FET of the preamp. The F ET provides a high input impedance for the preamp. The programmable preamp adjusts the gain to suit the required sens itivity and provides the output signal to the main assembly. The output signal is then sent to both the trigger circuitry and ADC .

6-4. M o dule Block Diagram and Theory of Operation

The following paragraphs contain block level theory of operation. This theory is not intended for component level troubleshooting, rather it is to be used to help isolate a module failure to card level.

The HP 16532A Oscilloscope Module is contained on one board. It runs at a 1 GSa/s digitizing rate, with a 250 MHz single-shot (real-time) bandwidth, 8000 samples per measurement per channel, with 2-channe l s imulta ne ous a cquisition which is expandable to up to 8 channels. See figure 6-1.

6-6. Main Assembly Theory of Operation

Acquisition

Th e acquisition circuitry provides the sam pling, digitizing, and storing of the signals f rom the channel attenuators. The channels are identical. Th e e xterna l trigger (E C L ) in put cannot be displayed. Trigger signals from each channel and the external triggers s ynchronize a cquisition through the time base circuitry. A 100 MHz oscillator and a time base provide system timing and sample clocking. A voltage-controlled oscillator (VCO), frequency divider, and digital

6-1

HP 16532A - Service

Figure 6-1 . HP 16532A Oscilloscope Block Diagram

phase det ector pr ovide the sa mple clock for high er sample rates . After conditioning and sampling, the signals a r e digitized, the n stored in a hybrid IC containing a FI SO (fast in, slow out) memory.

ADC. The eight-bit ADC digitize s the cha nn e l signal. D i gitiza tion is done by comparators in a flash converter. The sample clock latches the digitized value of the i nput to save it so that it can be sent to memory.

6-2

FISO Memory. 8000 samples of the FISO (fast in, slow out) memory a re used per me asurem e nt pe r channel. M emory positions are not addressed directly. The configuration is a ring which loops continuously as it is clocked. Memory position is tracked by counting clocks. The clocking rate is the same as the AD C, however the clock frequency is half tha t of the ADC since the FISO clocks on both transitions of the clock period. Data is buffered onto the CPU data bus for processing.

HP 16532A - Service

Triggering. There a re two main trigger circuits that trigger four trigger sources. The two trigger circuits are the an a l og trigger and the logic trigger. Th e analog trigger IC opera te s as a multichann e l Schmidt trigger/comparator. A trigger signal (a copy of t h e an alog i n pu t sign al) f r om each of the inputs is directed to the ana log trigger IC inputs. Th e trigger signal is continuously compared with the trigger refere nce le vel sele cted by the use r. Once the trigger condition is met, the trigger T RUE signal is fed to the logic trigger, which begins the acquisition and store functions by way of the time base.

Th e f our trigger sources are Cha nn e l 1, Chan nel 2, Intermodule Bus (IMB), and external BNC. The operation of the input channels was discussed previously. The IMB trigger signal is s ent directly to the logic trigger. Externa l triggering is provided by the BNC input of the 16500A Logic Analysis System mainf ra me .

Time Base. T he time base provides the sample clocks and timing necessary for data a cquisition. It consists of the 100 MHz reference oscillator and time base hybrid.

The 100 MHz reference oscillator provides the base sample frequency.

Th e time ba s e hybrid has programmable dividers to provide the rest of the sample frequencies appropriate for the time range se l e cted. The time base us es the time-s tretched output of the fine interpolator to time-reference the sampling to the trigger point. The time ba s e has counters to control how much data is taken before (pre-trigger data) and af te r (post-trigger data) the trigger eve nt. Afte r the de s ire d number of pre-trigger samples has occurred, the Time bas e hybrid sends a si gnal to the Logic Trigger (trigger arm) in dicating it is ready for the trigger event. When the trigger condition is satis fi e d, the Logic Trigger sen ds a signal back to the time base hybrid. Th e time base hybrid then starts the post-trigger delay counter.

Wh e n the countdown reaches ze ro, the s ample clocks are stopped and the CPU is signaled that the acquisition is complete. The Fine Inte rpolator is a dual- s l ope integrator that acts as a time-interval stretcher. When the l ogic trigger receives a signal tha t mee ts the programmed triggering requirements, it signals the time ba s e . Th e time base then s ends a pulse to the fine interpolator. The pulse is equal in width to the time between the trigger an d the ne xt sample clock. Th e f i ne interpolator stretches this time by a f actor of approximately 500. Meanwhile, the time ba s e hybrid runs a counter with a clock derived from the sample rate oscillator. Whe n the inte rpolator indicates the stretch is complete, the counter is stopped. Th e count repre sents, with much highe r accuracy, the time between the trigger an d the firs t sample clock. The count is stored a n d used to place the recently a cquired data in rel a tionshi p with previous data .

AC Cal. Th e AC Ca l is a multiplexer circuit that can provide several signals to the Probe Compensation/AC Calibrator output on the rear pan el. The s ignal pr ov ided depends on th e mode of the instrument. I t can be either a probe compensation si gnal, a pulse representing the trigger event, s i gnals used for self- cal ibration, or the 100 MHz reference oscillator when sample period is 1 ns.

DC Cal. The DC Cal output, a rear panel signal, is used for self-calibration. It is one output from the 16-channel DAC.

Digital Interface. The Digital Interface provides control and interfa ce be twe en the system control and digital functions in the acquisition circuitry.

Analog Interface. T he Analog Interface provides control of analog functions in the acquisition circuitry. It is primarily a 1 6-channel DAC with an accurate reference and filters on the outputs. It controls channel offs ets and trigger levels , and provides the DC Cal output.

6-3

HP 16532A - Service

6-7. Self-Tests

The self-tests for the HP 16532A oscilloscope module will identify the improper operation of major functional areas in the module. T he y are not intended for component level diagnostics.

If there a re multiple oscilloscope modules, the user must select the specific oscilloscope module to be tested at the ma in te s t sys te m me nu. M ultiple HP 16532A modules that are connected as one unit are recognized as a single unit in the te s t me nu. The external trigger cables connected to the ECL IN an d E CL OU T do not need to be r emove d i n order t o do t h e se l f-te st for each boa rd. Al l other cable con n ections mus t be removed.

All s elf-tests can be run without access to the interior of the instrument. If a se lf-test fails , re f er to section 6-8, " Troubleshooting."

Self-Test Access Procedure:

1. Disconnect all oscilloscope inputs and turn on the power switch.

2. F rom the sta rtup scree n, s h own in figure 6 - 2, touch the Configuration field. Then, touch Test in the pop-u p m enu.

6-4

Figure 6-2. Startup Screen

3. Insta ll the C omposite PV Te s t softwa re disk in the ina ctive disk drive.

4. Touch the box labeled Touch box to Load Test System. Se e figure 6-3.

Note

When the self-test software is loaded, the user operating system is overwritten in the mainframe system RAM.

HP 16532A - Service

Figure 6-3. L oad Test System Screen

5. From the test system screen in figure 6-4, touch Test System, the n touch 1 GSa/s SCOPE D. (For the example s h own in figure 6- 4, the oscilloscope module is in slot D. If multiple oscilloscope modules are present, select the one to be tested.)

Figure 6-4. Test System Screen

6-5

HP 16532A - Service

Figure 6-5 shows the selection menu for choosing to perform functional tests. The status of the functional tests is given.

Figure 6-5. Functional Tests Screen

6. Touch the Functional Tests field.

Figure 6- 6 is the ma in s elf-test menu. Self-tests can be e ithe r run individually by touching a specific test field, or run automatically through all tests one time by touching the All Tests field. Wh e n either All Tests or individual tests are run, the sta tus will chan ge to eithe r PA SSED or FA ILED. If you do all tests by touch- ing the All Tests field, skip to step 11. The procedures given in s te ps 7 through 12 us e the A/D Test as an example of how individual tests are done.

Figure 6-6. Ma in Test Menu

6-6

HP 16532A - Service

7. Touch the A/D Test field.

Th e in dividual test run screens, s ee figure 6-7, give the tes t na me , a brief description of the test, number of test runs, a n d the number of test failures.

Figure 6-7 . A/D Test Run Screen

8. Touch Run, then drag your finger to Single or Repetitive.

During the time a Single run or a Repetitive run is executing, the Run field displays Stop.

9. To stop a R epetitive run, touch Stop. See figure 6-8.

Figure 6-8 . Stop F ield

6-7

HP 16532A - Service

10. Touch Done to e xit t he A/D te s t.

11. To exit t he self te sts, touch the following fields in the lettered sequence below: a. 1GSa/s Scope

b. Test System c. Configuration d. Exit Test

12. Touch the box that reads " Touch box to Exit Test Sys tem". See fi gure 6-9.

Figure 6-9. Exit T est System Screen

6-8

HP 16532A - Service

Self-Test Descriptions

The following self-tests check the major components of the HP 16532A oscilloscope module as well as a ll ass ociate d circuitry. W h e n the self- te s ts h ave all be en completed with a "PASS" status, the major data and control pipelines in the HP 16532A oscilloscope module are functioning properly.

Data Memory Test

Th is test verifi e s the correct operation of the F I SO (fas t- in/s l ow-out) data m e m ory on each board. T est patterns are writte n into the memory and then re ad and compared with known values .

Timebase Test

Th e pre- trigger an d post-trigger delay modes are f irs t te s te d by programming a predetermined time interva l in the trigger counters. A t the e n d of the time inte rv als, the arm, trigger, a n d run sta tus bits are read and compared with known values . The coarse a n d fine inte rpolators are the n checked by reading the val ue s of the interpolator counters after a simulated acquisition. The counter val ue s are then compared with a known valu e . Finally, the sample clock is checked by programming a sample clock frequency and then reading the status of the clock to detect when one clock period has elapsed. The clock period time interval is the n compared with a known val ue .

A/D Test

This test verifies the correct operation of the A/D convertor on each board. A check of the trigger in Tri gger Imme dia te mode is f irs t ma de . The A/D convertors a re then exercised by se tting the re f erence voltage and channe l offset such that a simulate d a cquisition obtains data in the e xtre me s and middle of the quantiza tion ran ge of the A/D convertor. After e ach simulated acquisition, the data is compared with known values.

D/ A Test

This test verifie s the correct operation of the D/A convertor on ea ch board. Both the offse t a n d trigger level D/A convertors for each channel are s et to a reference l e v el and then changed. The logic trigger IC is programmed to detect the changes . The detection of a correct trigger indicates that the D/A convertor is operating normally.

Trigger Test

This test verifie s the correct operation of the trigger components on each board. First, the logic trigger memory is checked by writing and then reading known patterns. The logic qualifiers, l ogic trigger output, and trigger holdoff are checked.

IM B Test This te s t ve rif ie s the correct operation of the oscilloscope card interface to the intermodule bus.

All Tests

This will automatically execute ea ch tes t, one at a time, until all te s ts a r e done.

6-9

HP 16532A - Service

6-8. Troubleshooting

Th e troublesh ooting flow chart given in figure 6-10 will isolate module fa ilures to card leve l only. I t is n ot intended for component level troubleshooting. If se lf - tes ts indicate a f ailure, begin at the Start of the troubleshooting flow chart. When a s pe cific test fa ils , you will be ins tructed to replace a faulty card or you will be referred to other flow charts for the isolation of the f aulty card or cable.

The effects of ELECTR OST ATIC D ISCHARG E can damage electronic components. Grounded wriststraps and mats should be used when you perform any kind of service to this instrument or the cards in it.

Troubleshooting Aids

Th e C a l ibration menu contains the Service Cal mode that can help you troubleshoot the oscilloscope module. When the problem is found and corrected, run all of the calibration procedures given in Se ction IV, "Calibration."

If you suspe ct a f ault in the syste m, you can l oad the system defa ult values to see if the NVRAM parameters ha ve possibly been corrupted. T h e procedure for loading the de f a ult v alues is giv en in Se ction IV under the heading "Loading the Default Calibration Factors."

If loading the def ault value s does not fix the problem, you may want to ve rif y that the system clock is working correctly. T h e procedure to ve rif y the system clock is given below.

If none of thes e aids find the problem, go to the troubleshooting flow chart to find the problem. As s ta te d above, when the problem is found and corrected, run all of the cali bration procedures given in Section IV "Ca libration."

6-10

HP 16532A - Service

Verifying the System Clock

This procedure is provided as a troubleshooting aid to verify that the 100 MHz System Clock oscillator is functioning properly. The 100 MHz oscillator is the primary time reference us e d for all of the a cquisition clock periods. The test limits provided are the test limits for the 100 MHz oscillator only. If the readings are outside of the test limits, the oscilloscope module will not operate properly.

R e commended

Equipment R e quired C ritical S pecification Frequency Counter

> 100 MHz, 50 Ω

Model/Part Number

HP 5315A Option 003 Oscilloscope Cable

Procedure:

1. Connect the BNC cable from the AC CAL OUTPUT connector on the rear panel of the HP 16532A oscilloscope module to the input of the frequency counter.

2. On the HP 16532A oscilloscope module, set the following parameters, in the order given.

Menu Selection Setting Channel

Trigger Calibration

Bandwidth ≥ 100 MHz, Real Time 50 Ω BNC (m to m) 48- in ch

s/Div Auto-Trig Mode

Procedure Signal

HP 54502A HP 10503A

1 ns Off Service Cal

Osc Out Sample Clk

3. Select RUN-REPETITIVE. Observe the frequency displayed on the frequency counter and verify that it is 100 MHz ± 0.005%.

4. Di s connect the BNC cable f rom the fre que ncy counter and connect the cable to the input of the HP 54502A Oscilloscope.

6-11

HP 16532A - Service

5. On the HP 54502A Oscilloscope, set the following parameters, in the order given.

Menu Selection Setting Channel

Probe V/Div Offset Coupling

1.000:1 200 mV

0.0 V DC

Time bas e

Trigger

6. In the HP 16532A Oscilloscope trigger menu, se l e ct Auto-Trig On. Verify that the 100 MHz System Cl ock is gate d.

7. Select STOP on both the HP 54502A and HP 16532A oscilloscopes.

8. Disconnect the cable from both oscilloscopes.

s/Div Acquisition

Mode Level Slope

10 ns Realtime

Edge

− 200 mV Falling

6-12

Troubleshooting Sheet 1

HP 16532A - Service

H P

1 6 5 3 2

T R O U B

L E S H O O

I N G

Figure 6-10 . Troubleshooting Flowchart

S H E E

6-13

H P

1 6 5 3 2

T R O U B

L E S H O O

T N

HP 16532A - Service

Troubleshooting Sheet 2

S H E E

Figure 6-10 . Troubleshooting Flowchart

6-14

Troubleshooting Sheet 3

HP 16532A - Service

H P

1 6 5 3 2

T R O U B

L E S H O O T

I N G

Figure 6-10 . Troubleshooting Flowchart

S H E E T

6-15

H P

1 6 5 3 2

T R O U B

L E S H O O

T N

HP 16532A - Service

Troubleshooting Sheet 4

S H E E

Figure 6-10 . Troubleshooting Flowchart

6-16

Troubleshooting Sheet 5

Figure 6-10 . Troubleshooting Flowchart

HP 16532A - Service

H P

1 6 5 3 2

T R O U B

L E S H O O

I N G

6-17

S H E E

HP 16532A - Service

6-9. Oscilloscope Mod ule Removal and Replaceme nt

The effects of ELECTR OST ATIC D ISCHARG E can damage electronic components. U se grounded wrist straps and mats when you are performing any kind of service on this module.

Wh e n you ne ed to remove a n d replace a module, te s t the module f irs t to determine the faulty part. If either of the trigger cables are fa ulty, re move the faulty cable and replace it with a ne w one . Refer to paragraph 6-1 0 f or procedures to remove an d replace a faulty cable. If either of the attenua tors a re faulty, remove the f aulty attenu a tor a n d re pla ce it with a new one. Refer to paragra ph 6-11 f or procedures to remove a n d re place a fa ulty attenuator.

Oscilloscope Module Removal Procedure:

Do not install, remove or replace the module in the instrument unless the instrument power is turned off.

1. Turn off the instrume nt power s witch, un plug the power cord, and disconnect any input or output connections.

2. Starting from the top, loosen the thumb screws on the fille r pane ls and the cards. See fi gure 6 - 1 1.

Figure 6-11 . Endplate Ov erlap - Top Sequence

3. Starting from the top, pull out the cards and the filler panels halfw ay.

4. P ull out the oscilloscope module completely.

6-18

HP 16532A - Service

5. If a trigger cable w a s determined to be faulty, re pla ce the faulty trigger cable on the oscilloscope module (refer to paragraph 6- 1 0). Otherwise, s kip to step 6.

6. If a n attenuator was dete rmine d to be fa ulty, replace the faulty attenuator on the oscilloscope module (ref e r to paragraph 6-11). Otherwise, skip to step 7.

7. If the oscilloscope module was determined to be faulty, re m ove the attenu a tors f r om the oscilloscope module ( r efe r t o paragraph 6-11 ) .

8. A cquire a replacement oscilloscope module and install the attenuators on the replacement oscilloscope module ( r efe r t o paragraph 6-11 ) .

9. Reinstall t he repaire d (or replacement) oscilloscope module in the mainframe (refer to the next procedure "Oscilloscope Module Replacement Procedure").

Oscilloscope Module Replacement Procedure

1. If you ha v e not already done so, pull the installe d boards half w a y out of the card slots (refe r to steps 1 through 3 of the preceding procedure "Os cilloscope Module Removal").

2. Determine which modules you want to install in the mainf ra me , and the slots where you want them installed.

3. Starting with the bottom slot, slide e ach module to be installed approximately halfway into the mainframe card slot.

4. F irmly s eat the bottom card into the backplane connector. Keep applying pressure to the center

of the card endplate while tightening the thumb screws finger tight.

5. Repeat step 4 for all cards and filler panels in a bottom-to-top order. See figure 6-1 2 .

F igure 6-1 2 . Endplate Overlap - Bottom Sequence

6. A ny fille r pane ls tha t a re not used should be kept for future use. Fille r pane ls mu st be i nsta l led in all unuse d card slots for correct air circulation.

6-19

HP 16532A - Service

6-10. Trigger Cable Removal and Replacement

The effects of ELECTR OST ATIC D ISCHARG E can damage electronic components. U se grounded wriststraps and mat s when performing any kind of service to this instrument or the cards in it.

Trigger Cable Removal Procedure:

1. Follow the procedures given in paragraph 6-9 " Os cilloscope Module Removal a nd Replacement" to remove the HP 16532A Oscilloscope Module to be serviced.

2. Remove the hex nut (H4) a n d the wa sher (H5) from the SMB connector on the cable to be rem ove d. See figure 6-13.

6-20

Figure 6-1 3. Oscilloscope Module Ex plode d View

HP 16532A - Service

3. Pull the straight SM B connector on the cable through the hole in the rea r pan e l.

4. P ull the right-a n gle SMB connector on the cable awa y f rom its mating connector on the board.

5. Install a new cable (refer to the next paragraph).

Trigger Cable Replacement Procedure:

1. Ins ta ll the s tra i ght S M B connector on the cable through the hole in the rear panel. S ee figure 6- 1 3.

2. Attach the wash e r ( H5 ) and the hex nut (H4 ) to the s tra i ght SMB connector on the cable. T i ghten the hex nut.

3. Conne ct the right-angle SMB connector on the cable to its mating connector on the board.

6-11. Attenuator Removal and Replacement

The effects of ELECTR OST ATIC D ISCHARG E can damage electronic components. U se grounded wriststraps and mat s when performing any kind of service to this instrument or the cards in it.

Attenuator Removal Procedure:

1. Follow the procedures given in paragraph 6-9 " Os cilloscope Module Removal a nd Replacement" to remove the HP 16532A Oscilloscope Module to be serviced.

2. Remove the f our he x nuts (H3 ) f rom the BN C connectors on the rear pane l (M P1). See figure 6-13.

3. Remove the two hex nuts (H4) and the two washers (H5 ) from the SMB connectors on the rear panel.

4. Remove the thre e end plate screws (H6) holding the rear pane l (M P1) and the ground spring (MP2) to the board asse mbly (A1).

5. P ull the re ar panel (MP1 ) and the ground spring (MP2) from the board assembly (A1). You may need to loosen the a ttenua tor retainer screws (H7) before removing the ground spring.

6. Remove the two attenuator retainer screws (H7) holding the attenuator assembly (A2 ) to the board ass e m bly (A 1 ).

7. Gently pull the attenuator as s e m bly (A2) straight up from the board assembly (A 1 ) bein g careful n ot to damag e the conn ector and the compo nent s beneath the attenua t or assem bl y.

8. Install a new attenuator assembly (refer to the next paragraph "Attenuator Replacement Procedure").

6-21

HP 16532A - Service

Attenuator Replacement Procedure:

a. G e ntly push the a tte n ua tor as s e m bly (A 2 ) stra i ght down on the board asse mbly (A 1) being careful

not to damage the connector and the components beneath the attenuator assembly. See figure 6-13.

b. Attach the attenuator ass embly (A2) to the board assembly (A1 ) with the two a tten u a tor reta i n e r

screws (H7).

c. Asse mble the re ar panel (MP1) a n d the ground spring (MP2) to the board assembly (A1 ) a nd attach

them with the thre e end plate screws (H6 ). You may nee d to loosen the attenuator retaine r s crews (H7) before assembling the ground spring to the board assembly, then tighten the attenuator screws (H7) when the ass e mbly is finished.

d. Attach the SMB connectors to the rear pane l (MP1) with two hex nuts ( H4 ) and two washers (H5 ). e. Attach the BNC connectors to the rea r pan el (MP1 ) with four h e x nuts ( H3 ).

Note

Tighten the hex nuts down so that they will not interfere with the installation of the boar d above th e oscilloscope modu le. One of the f lat surfaces on the outside edge of the nut should be parallel with the top edge of th e rear panel.

6-22

CERTIFICATION

Hewle tt-Packard Company certif ies that this product met its published specifications at the time of shipment from the f actory. Hew lett-Packar d furthe r certif i es that its calibra tion measureme nts are tracea ble to the Unite d States Na tiona l I nstitute of Stan dards and Technology, to the extent allowed by the Institute’s calibration facility, and to the calibration facilities of other Interna tional Standards Organiza tion members.

WARRANTY

This H e wl e tt-Packard product is warrante d aga ins t defects in materia l and workmanship for a period of one year from date of s hipment. D uring the w a rra nty pe riod, Hewle tt-Packard Company will, at its option, either repair or replace products which prove to be defective.

For warra nty s ervice or repair, this product must be returned to a service facility des i gnated by HP. Buyer shall prepa y s h i pping charges to HP and HP sha ll pa y s h i pping charges to return the product to Buyer. However, Buyer shall pay a ll shipping charges, duties, and taxes for products returned to HP from another country.

HP wa rra nts that its software and firmware designate d by HP f or use with an instrument will e x e cute its programming instructions when properly instal le d on that instrument. HP does not warra nt that the operation of the instrument or software, or firmware will be uninte rrupted or error free.

LIMITATION OF WARRANTY

Th e foregoing warranty s h a ll not apply to defects resulting from improper or inadequate ma inte na n ce by Buyer, buyer-s u pplied software or interfa cing, unauthorize d modification or misuse, operation outside the environmental spe cifications for the product, or improper site preparation or maintenance.

NO OTHER WARRANTY IS EXPRESSED OR IMPLIED. HP SPECIFICALLY DISCLAIMS THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE .

EXCLUSIVE REMEDIES

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CWA388

HP 16532A User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual