HP 1332A Service manual

OPERATING AND SERVICE MANUAL
X-Y DISPLAY
MODEL 133249
(Including Options: 007, 011, 039, 100, 101,
105, 106, 110, 120, 121, 200, 201, 205, 206, 210,
211, 215, 216, 300, 301, 302, 303, 304, 305, 310,
315, 322, 323, 324, 325, 326, 330, 550, 561, 562,
570, 580, 611, 631, 639, and 910.)
SERIAL NUMBERS
This manual applies directly to instruments with serial
numbers prefixed
1616A.
With changes described in Section VII, this manual also
applies to instruments with serial numbers prefixed
1414A through l615A.
PRINTED: JULY 1976
Scans by ArtekMedia © 2008

DIGITALY REMASTERED
OUT OF PRINT
HEWLETT PACKARD MANUAL SCANS
By
Artek Media
18265 200th St.
Welch, MN 55089
www.artekmedia.com
“High resolution scans of obsolete technical manuals”
ALL HEWLETT PACKARD MANAULS ARE REPRODUCED BY PERMISSION
AND UNDER LICENSE AGREEMENT WITH AGILENT TECHNOLOGIES, INC.
REMOVAL OF THIS DISCLAIMER IS INVIOLATION OF AGILENT
TECHNOLOGIES AND ARTEK MEDIA’S COPYRIGHTS. DUPLICATION OR
MODIFCATION OF THIS DIGITAL DOCUMENT WITHOUT PRIOR CONSENT
IS NOT PERMITTED
If your looking for a quality scanned technical manual in PDF format please visit
our WEB site at www.artekmedia.com or drop us an email at
[email protected] and we will be happy to email you a current list of the
manuals we have available.
If you don’t see the manual you need on the list drop us a line anyway we may
still be able to point you to other sources. If you have an existing manual you
would like scanned please write for details. This can often be done very
reasonably in consideration for adding your manual to our library.
Typically the scans in our manuals are done as follows;
1) Typed text pages are typically scanned in black and white at 300 dpi.
2) Photo pages are typically scanned in gray scale mode at 600 dpi
3) Schematic diagram pages are typically scanned in black and white at 600
dpi unless the original manual had colored high lighting (as is the case for
some 70’s vintage Tektronix manuals).
4) Most manuals are text searchable
5) All manuals are fully bookmarked
All data is guaranteed for life (yours or mine … which ever is shorter). If for ANY
REASON your file becomes corrupted, deleted or lost, Artek Media will replace
the file for the price of shipping, or free via FTP download.
Thanks
Dave & Lynn Henderson
Artek Media

CERTIFICATION
The Hewlett-Packard Company certifies that this instrument ~oas
thoroughl?~tested nnd inspected ancl found to meet its published
specifications when it lclas shipped from the factor?/.The Hewlett-
Packarcl Company further certifies that its calibration measzlre-
ments are traceable to the U.S. National Bureazt ofStandards to
the extent allolcled b?j tlze Bzireau's calibration facility.
WARRANTY AND ASSISTANCE
This Hewlett-Packard product is warranted against defects
in materials and workmanship. This warranty applies for
oneyear from the date of delivery,or, in the case of certain
major components listed in the operating manual, for the
specified period. We will repair or replace productswhich
prove to be defective during the warranty period provided
they are returned to Hewlett-Packard. No other warranty
is expressedorimplied. We are not liablefor consequential
damages.
Service contracts or customer assistance agreements are
available for Hewlett-Packard products that require main-
tenance and repair on-site.
Scans by ArtekMedia © 2008

Model 1332A
TABLE OF CONTENTS
Table of Contents
Section Page
..............
I GENERAL INFORMATION 1-1
1.1
. Introduction ...................... 1-1
.....................
1.5 . Specifications 1-1
..............
1.8 . Accessories Supplied 1-1
............. 1.10 . Accessories Available 1-1
1.12
. Options ........................... 1-1
1.14 . Instrument and Manual
Identification
................... 1-1
I1 INSTALLATION ......................... 2-1
2.1
. Introduction ...................... 2-1
2.3
. Initial Inspection ................. 2-1
2.5
. Power Requirements .............. 2-1
2.8
. Power Cords and Receptacles ..... 2-1
2.10
. System Applications ............ 2-1
2-1
1 . Repacking for Shipment .......... 2-1
Section Page
................ Z-axis Rise Time 5-9
Linearity
....................... 5-9
...................... Geometry 5-10
....... .
CMRR Option 106 Only 5-10
TTL Blanking .
............. Option 216 Only 5-12
..................... Adjustments 5-13
..... Low-voltagePower Supply 5-13
High-voltagePower Supply
.................. Adjustment 5-13
... Focus Centering Adjustment 5-14
.... Intensity Limit Adjustment 5-14
Trace Alignment and
................ Orthogonality 5-14
Z-axis High Frequency
.................. Adjustment 5-14
..... X and Y Gain Adjustments 5-15
X- and Y-axis High Frequency
Adjustment
.................. 5-15
I11 OPERATION ............................. 3-1 VI REPLACEABLE PARTS
................. 6-1
3.1
. Introduction ...................... 3-1
3.3
. Controls and Connectors .......... 3-1
3.5
. Instrument Modifications ......... 3-1
3.7
. Preoperational Procedure .......... 3-1
6.1
. Introduction ...................... 6-1
............. . 6.3 Ordering Information 6-1
IV PRINCIPLES OFOPERATION
........... 4-1 VII MANUAL CHANGES .................... 7-1
4.1
. Introduction ......................
................ 4.3 . Circuit Discussion
4.4
. Low-voltage Power Supply
(LVPS) .......................
4.9 . High-voltage Power Supply
(HVPS)
.......................
4.13 . Deflection Amplifiers ...........
4.17 . Z-axisAmplifier ................
V PERFORMANCE CHECK AND
ADJUSTMENTS
.......................
Introduction ......................
Recommended Test Equipment ....
Performance Check Record ........
Performance Checks ..............
Deflection Amplifier Rise Time ..
Deflection Factor ...............
Diagonal Settling Time .........
Deflection Polarity ..............
Position Control ................
Input Resistance ................
Input Capacitance ..............
Deflection Amplifier
Dynamic Range
...............
....................... Crosstalk
Z-axis Polarity and Gain
........
7.1 . Introduction ...................... 7-1
.................. . 7.3 Manual Changes 7-1
.......... . 7.5 Manual Changes Listing 7-1
VIII SCHEMATICS AND TROUBLE-
SHOOTING
............................ 8-1
...................... Introduction
Schematics
.......................
Component Locations .............
Preventive Maintenance ..........
.......... Mechanical Inspection
........................ Cleaning
.......... Repair and Replacement
CRT Removal and Installation
..
Semiconductor Removal and
.................. Replacement
Circuit Boards
....................
Board Connections ..............
Servicing Etched Circuit Boards .
Heat Sinks ......................
Troubleshooting ..................
Troubleshooting the Low-
voltage Power Supply
.......
Troubleshooting the High-
voltage Power Supply
.........
DC Voltages ....................
Scans by ArtekMedia © 2008

List of Illustrations
List of Tables
LlST OFILLUSTRATIONS
Model 1332A
Figure Title Page Figure Title Page
...........
.
1.1 . Model 1332A X-Y Display .............. 1-0 6.1 Illustrated Parts Breakdown 6-3
Power Receptacles
..................... 2-1 8.1
.
Controls and Connectors ............... 3-2 8.2
.
Rise Time Test Setup ................... 5-3 8.3 .
Deflection Factor Test Setup ........... 5-4 8.4 .
..... Diagonal Settling Time Test Setup 5-5
Deflection Amplifier Dynamic 8.5
.
Range Test Setup .................... 5-7
Z-axis Polarity and Gain Setup
......... 5-8 8.6 .
Monitor Oscilloscope Presentation ...... 5-8 8.7 .
Z-axis Rise Time Setup ................. 5-9 8.8 .
Linearity Test Setup .................. 5-10
Linearity Presentation
................ 5-1 1 8.10 .
..................... CMRR Test Setup 5-12 8.11 .
?TL Blanking Test Setup ............. 5-12 8.12 .
X- and Y-axis Test Setup (Number 1) ..
5-16
X- and Y-axis Test Setup (Number 2)
..
5-17 8.13
.
Adjustment Location .................. 5-17 8.14 .
LlST OFTABLES
Table Title Page
1.1
. Specifications .......................... 1-2
1.2
. General Information ................... 1-2
1.3
. Model 1332A Options .................. 1-4
5.1
. Recommended Test Equipment ......... 5-2
5.2
. Rise Time Specification ................ 5-3
5.3
. Input Resistance ....................... 5-6
............ 5.4 . Low-voltage Power Supply 5-13
Semiconductor Terminal
Identification
........................ 8-3
Assembly and Chassis Parts Locator
... 8-4
Overall Block Diagram
................. 8-5
A2 Y-axis Amplifier Component
Locator
.............................. 8-6
A5 Control Board Component
Locator
.............................. 8-6
Y-axisAmplifier
....................... 8-7
Y-axis Amplifier
....................... 8-9
A1 Main Board Component Locator
(front) .............................. 8-10
Z-axis Amplifier
...................... 8-11
Low-voltagePower Supply
............ 8-13
A3 High-voltagePower Supply
Component Locator
................. 8-14
........... High-voltagePower Supply 8-15
DC Voltage Distribution
.............. 8-16
Table Title Page
6.1 . Abbreviations for Replaceable
Parts List ............................ 6-1
6.2
. Replaceable Parts ...................... 6-5
6.3 . Replaceable Parts for Available Kits .. 6-12
6.4
. List of Manufacturers' Codes .......... 6-16
. ....................... 7.1 Manual Changes 7-1
8.1
. Schematic Notes ....................... 8-3
Scans by ArtekMedia © 2008

SAFETY SUMMARY
The following general safety precautions must be observed during ailphases of operation, service,
and repair of this instrument. Failure to comply with these precautions or with specific warnings
elsewhere
in this manual violates safety standards of design, manufacture, and intendeduse of the
instrument. Hewiett-Packard Company assumes no liability for the customer's failure to comply
with these requirements.
GROUND THE INSTRUMENT.
To minimize shock hazard, the instrument chassis and cabinet must be connected to an electrical
ground. The instrument is equipped with a three-conductor ac power cable. The power cable
must either be plugged into an approved three-contact electrical outlet or used with a three-contact
to two-contact adapter with the grounding wire (green) firmly connected to an electrical ground
(safety ground) at the power outlet. The power jack and mating plug of the power cable meet
International Electrotechnical Commission (IEC) safety standards.
DO NOT OPERATE INAN EXPLOSIVE ATMOSPHERE.
Do not operate the instrument in the presence of flammable gases or fumes. Operation of any
electrical instrument in such an environment constitutes a definite safety hazard.
KEEP AWAY FROM LIVE CIRCUITS.
Operating personnel must not remove instrument covers. Component replacement and internal
adjustments must be made by qualified maintenance personnel. Do not replace components with
power cable connected. Under certain conditions, dangerous voltages may exist even with the
power cable removed. To avoid injuries, always disconnect power and discharge circuits before
touching them.
DO NOT SERVICE OR ADJUST ALONE.
Do not attempt internal service or adjustment unless another person, capable of rendering first aid
and resuscitation, is present.
USE CAUTION WHEN EXPOSING OR HANDLING THE CRT.
Breakage of the Cathode-ray Tube (CRT) causes a high-velocity scattering of glass fragments (implosion).
To prevent CRT implosion, avoid rough handling or jarring of the instrument. Handling of the CRT shall
be done only by qualified maintenance personnel using approved safety mask and gloves.
DO NOT SUBSTITUTE PARTS OR MODIFY INSTRUMENT.
Because of the danger of introducing additional hazards, do not install substitute parts or perform
any unauthorized modification to the instrument. Return the instrument to a Hewlett-Packard
Sales and Service Office for service and repair to ensure that safety features are maintained.
DANGEROUSPROCEDURE WARNINGS.
Warnings, such as the example below, precede potentially dangerous procedures throughout this
manual. Instructions contained in the warnings must be followed.
WARNING
0
Dangerous voltages, capable of causing death, are present in this instrument.
Useextreme caution when handling, testing, and adjusting.
SS-2-1 I76
Scans by ArtekMedia © 2008

General Information Model 1332A
1332A-P-001
Figure 1-1. Model 1332A X- Y Display
Scans by ArtekMedia © 2008
ARTE
K
MEDI
A
Digitally signed
by ARTEK
MEDIA
DN: cn=ARTEK
MEDIA, c=US,
o=DC
Henderson
Date:
2008.04.25
06:21:16 -05'00'

Model 1332A GeneralInformation
SECTION I
GENERAL INFORMATION
1-2. The Hewlett-Packard Model 1332A is a cathode-
ray tube display that is capable of meeting a wide
variety of OEM medical and electronic instrument dis-
play needs. Thecathode-raytubehastheresolution and
picture quality required for medical diagnostic systems
plus an extremely bright display required for differ-
entiating between many gray shades.
1-3. This manual contains installation and operating
instructions, as well as maintenance information for
the 1332A. Instrument specifications and procedures
for verifying proper operation areincluded. Procedures
are also included for adjusting the instrument to its
performance specifications. Schematic diagrams, the
theory of operation, and troubleshooting information
are provided for use in maintaining the instrument.
1-4. This section of the manual contains the per-
formance specifications for the 1332A, and a list of
options available. It also lists the accessories supplied
with the 1332Aandother accessories thatareavailable.
Instrument and manual identification information are
also included.
1-5. SPECIFICATIONS.
1-6. Table 1-1is a complete list of the 1332A critical
specifications that are controlled by tolerances. Table
1-2 contains general information that describes
operating characteristics of the 1332A.
1-7. Any change in the specifications due to'manu-
facturing, design, or traceability to the U.S. National
Bureau of Standards will be listed on a manual change
sheet included with this manual. The manual and
manualchangesheetsupersedeallpreviousinformation
concerning specifications of the 1332A.
1-8. ACCESSORIES SUPPLIED.
1-9. The following accessories are supplied with the
1332A:
One Blue Contrast Filter, HP Part No. 01332-
02706.
One 0.375A Fuse for 220/240-Vac operation, HP
Part No. 2110-0063.
One2.3m (7.5ft)linecord,HPPartNo. 8120-1538.
1-10. ACCESSORIES AVAILABLE.
1-11. The following accessories are available for the
1332A:
Model 10380A OEM Horizontal Frame Kit.
Model 10381A Rack Mount Hardware Kit for
Model 10380A.
Model 10382A Bench Hardware Kit for Model
10380A.
Model 10383A Rack Mount Adapter.
Model 10384ARack Mount Kit forTwo Displays.
Model 10385ARack Mount Kit forTwo Displays.
Model 10386A OEM Vertical Frame.
BNC Shorting Caps,
HP Part No. 1250-0645.
Camera Model 197A Option 006.
Model 10488A Input Signal Cable.
1-13. Standard options are modifications installed on
HP instruments at the factory and are available on
request. Table 1-3lists available options for the 1332A.
For information on field-installable options, refer to
Application Note 199,"Small Screen Displays, Medical
Diagnostic System Application and Interfacing."
1-14. INSTRUMENT AND MANUAL IDENTI-
FICATION.
1-15. Instrument identification by serial number is
located on the rear panel. Hewlett-Packard uses a two-
sectionserialnumber consisting of four-digitprefix and
a five-digitsuffix separated by a letter designating the
country in which the instrument was manufactured.
(A
= U.S.A; G = West Germany; J = Japan; U = United
Kingdom.)
1-16. This manual applies to instruments with a
serial number as shown on the title page. If changes
have been made in the instrument since this manual
was printed, a "Manual Changesr' supplement sup-
plied with the manual will define these changes. Be
sure to record these changes in your manual. Back-
dating information in Section VII adapts the manual
to instrument with serial numbers lower than that
shown on title page. Part Numbers for the manual
and the microfiche copy of the manual arealso shown
on the title page.
Scans by ArtekMedia © 2008

General Information Model 1332A
Table 1-1. Specifications
VERTICAL AND HORIZONTAL AMPLIFIERS provided that zero input position is on screen,
RISE TIME: c70 ns (10%to 90%points) for full screen without degradation.
deflection.
CROSSTALK: <0.254 mm (0.010 in.) with one input
DEFLECTION FACTOR:
terminated in 50 ohms and the other driven by
Horizontal: 100 mV/div (1 V p-p for 10-div deflec- a 1-volt p-p, 500-kHz signal. <0.381
mm (0.015 in.)
tion). Front-panel adjustment from approx 80 at 5 MHz when driven from a 50-ohm source.
mV/div to 200 mV/div. 1 div = 1.19 cm (0.47 in.).
Vertical: 100 mV/div (0.8 p-p for 8-div deflection).
Z-AXIS AMPLIFIER
Front-panel adjustment from approx 80 mV/div
RISE TIME: <25 ns (cw bandwidth: approx 5 MH~).
to 200 mV/div. 1 div = 1.19cm (0.47in.).
BLANKING RANGE: 0 to 1 V (with internal gain
SETTLING TIME: signal settles to within one spot adjustment set for maximum gain).
diameter of final value in <300ns for any large or
POLARITY: v input fully unblanks
small movement. Off screen deflection not to
exceed specified dynamic range.
CRT.
GAIN: Internally adjustable over 2.5:l attenuation
INPUT RC: 1MQ nominal shunted by <60pF. ratio.
POLARITY: positive vertical input moves beam up;
RC:
MQ nominal shunted by <60 pF.
positive horizontal input moves beam to right.
POSITION: front panel controls allow zero input to be
set off-screenin any direction from anywhere with-
CATHODE-RAY TUBE
in the viewing area. LINEARITY: <3%of full scale along major axes.
DYNAMIC RANGE: beam may be deflected off screen
GEOMETRY: <3% pincushion and barrel distortion
up to one-half screen diameter in any direction, over usable display area.
Table
1-2. General Information
VERTICAL AND HORIZONTAL AMPLIFIERS
BANDWIDTH: dc to 5 MHz (3 dB down) for 7.62-cm
(%in.)deflection.
PHASE SHIFT: <lo (dcto 1 MHz).
MAXIMUMINPUT: *50 V (dc + peak ac).
DRIFT:
Position:
c0.5 mm/hour (0.020 in./hour) and s1.02
mm (0.040 in.) in 24 hours with covers installed.
Galn: 4.0%under all combinations of specified line
voltage and temperature from +20°Cto +55OC with
covers installed after 15-minute
warmup.
Z-AXIS AMPLIFIER
MAXIMUM INPUT: *50 V (dc + peak ac).
LIGHT OUTPUT STABILITY: measurements made at
one hour intervals will not vary by >lo%,for any
location within usable display area, under all
specified conditions of line voltage and tempera-
ture.
CATHODE-RAY TUBE
TYPE: post-deflection accelerator, approx 22 kV
acceleration potential, aluminized P31 phosphor
standard (see options for additional phosphor
selection), electrostatic focus and deflection.
VIEWING AREA: 114 sq cm (17.67 sq in.) approx
9.6 cm vertically by 11.9cm horizontally (3.8in.by
4.7 in.).
QUALITY AREA: center 9 divisions horizontally and
center 7 divisions vertically.
GRATICULE: 8 x 10 divisions. Internal graticule is
standard (1 div
= 1.2cm [0.47 in. ] ).
SPOT SIZE: c0.030 cm (0.012in.) atcenter screen and
varying by not more than 10%over entire quality
area with intensity held constant. Measured using
shrinkingraster method.
LINE RESOLUTION: approx 31.5 lines/cm (80 lines/
in.).
LINE BRIGHTNESS: ,170 cd/m2 (50 fl) at a writing
speed of 0.254 cm/ps (0.1 in./ps), 60 Hz refresh
rate, P31 phosphor, 0.3 mm (0.012in.) spot size.
UNIFORMITY: light output of spots located anywhere
in the quality area will not vary by more than 40%.
CONTRASTRATIO: 4:1 or greater measured by photo-
metrically summing the trace brightness and back-
ground, then dividing by the background bright-
ness.
Scans by ArtekMedia © 2008

Model 1332A
Table 1-2. General Information (Cont'd)
General Information
SAFETY PROTECTION NOTE
IMPLOSION:
protective safety panel between CRT
and bezel protects viewer. Instruments with
UL 544 labeled options
HIGH VOLTAGE SHOCK: anode lead is permanently (for medical and dental equipment)oper-
bonded to CRT.
ate from 48 to 66 Hz only.
X-RAY EMISSION: less than 0.05 milliroentgen/
hour. Not measureable with Victoreen Model 440
RF/C in background noise. DIMENSIONS: see outline drawing.
DESIGN AND MANUFACTURE: standard instrument WEIGHT: net, 8.6 kg (19 lb) with cover and feet;
is designed and manufactured to meet Under- shipping,
10.5 kg (23lb).
writers Laboratories safety standards. See options
for UL labeled instruments.
ENVIRONMENT
GENERAL TEMPERATURE: O°C to +55OC operating; -40°C to
X-, Y-, AND 2-INPUT CONNECTORS: BNC type +70°C non-operating.
mounted on rear panel (shield grounded).
HUMIDITY: 95% relative humidity to 40°C.
FRONT PANEL CONTROLSWITH KNOBS: position X, ALTITUDE: 4600 m (15 000 ft)non-operating, 6300 m
position
Y, focus, andintensity. (25 000 ft)non-operating.
FRONTPANELSCREWDRIVER ADJUSTMENTS: trace
SHOCK: 30 G level with 11 ms duration and 1/2 sine
align, astigmatism,gain
X, gain Y. ' wave shape.
POWER: nominal line voltage settable to 100, 120, VIBRATION: vibrated in three planes for 15 minutes
220, and 240 Vac; +5%-10% 48 Hz to 440 Hz 50 each with 0.254 mm (0.010 in.) excursion 10 to
VA maximum (approx
40 W).
55 Hz.
L
(8-318)
1 NOTE
1. Dimensionsare for general
I
information only. If di-
mensionsare required for
buildingspecial enclosures,
contact your
HP Field
Engineer.
I
2. Dimensionsare inmillimetres
and (inches).
n
b- 487 (19-3116)
524 (20-518)
146
(5-314)
000
Scans by ArtekMedia © 2008

General Information Model 1332A
Table 1-3. Model 1332A Options
Kit Part Number
See Replaceable
Parts List
01332-88703
None
See Replaceable
Parts List
01332-88705
01332-66506
01332-88702
01332-88703
01332-88704
01332-88705
01332-88710
01332-8871
1
None
See Replaceable
Parts List
01332-88715
01332-88718
01332-88713
8120-1703
8120-1369
8120-1692
8120-0698
8120-2061
Option
100
101
105
106
110
120
200
201
205
206
210
215
216
300
301
302
303
304
Description
X- and Y-axis amplifier deflection factor changed to
500 mV/div, 5 V p-p full screen deflection.
X- and Y-axis amplifier deflection factor changed to
1 V/div, 10V p-p full screen deflection.
X- and Y-axis amplifier polarity changed so negative
input moves beam to the right and up.
X- and Y-axis amplifier changed to fully differential
inputs.
X- and Y-axis amplifier input impedance changed to 50
ohms. Maximum input 3.5 V dc
+ pk ac (not compatible
with options 100, 101).
X- and Y-axis amplifier rise time changed to 25 ns.
Z-axis amplifier CRT blanking range changed to 0 to 5 V.
Z-axis amplifier CRT blanking range changed to 0 to
10v.
Z-axis amplifier polarity changed so negative input un-
blanks trace.
Z-axis amplifier changed to fully differential input.
Z-axis amplifier input impedance changed to 50 ohms.
Maximum input 3.5 V dc
+ pk ac (not compatible with
options 200, 201).
Z-axis amplifier gain output changed to vary linearly
(*20%) with linear change in Z-axis input voltage
(gamma correction).
TTL blanking level added to Z-axis amplifier. High state
(+2.5V to +5V) blanks any analog Z-input signal. Low
state (0.0
V to 0.8 V) returns blanking to araiog Z-axis
input.
Power cord for use in Great Britian and Singapore. 7.5
foot, 240 volt max, three conductor IEC.
Power cord for use in Australia and New Zealand. 7.5
foot, 240 volt max, three conductor IEC.
Power cord for use in East and West Europe. 7.5 foot,
240 volt max, three conductor IEC.
Power cord for use in USA, Canada, Japan and Mexico.
7.5 foot, 240 volt max, three conductor IEC to NEMA.
Power cord for use in USA, Canada, Japan and Mexico.
30 inch coiled (extends to six feet), 120 volt max three
conductor IEC to NEMA 5-15P.
Scans by ArtekMedia © 2008

Model 1332A General Information
Table 1-3. Model 1332A Options (Cont'd)
1-5/(1-6blank)
Kit Part Number
8120-1396
See Replaceable
Parts List
See Replaceable
Parts List
See Replaceable
Parts List
See Replaceable
Parts List
See Replaceable
Parts List
01332-88719with
5083-4176CRT
01332-88723
See Replaceable
Parts List
1220-0208
See Replaceable
Parts List
See Replaceable
Parts List
See Replaceable
Parts List
See Replaceable
Parts List
NA
Option
305
310
315
322
323
324
325
326
330
550
56 1
562
570
580
910
Description
Exchanges standard power cord for a 2.5-ft power cord
for use in rack installation. Option 305 power cord con-
forms to standard CEE22-V1.
Power dissipation increased to approximately 50 watts.
+lo%,-20% tolerance at 100, 120, and 240 Vac.
Display shipped with covers, feet, trim and tilt stand.
Exchanges standard Z-axis INTENSITY control for a
precision 10-turncontrol with turns counting dial.
Front panel controls: astigmatism. Trace align, X-gain,
and Y-gain become internal adjustments on amplifier
board assembly A2.
Remote program connector added to rear panel. X,
Y,
and Z signal inputs wired to the positive signal inputs.
(Note: input capacitance increases to approximately 120
PF).
Scale illumination added. Illuminates phosphor back-
ground defining internal graticule.
Front panel controls: Intensity, focus position X, and
position
Y become screwdriver adjustments.
Designed to meet Underwriter's Laboratories listing for
Dental and Medical Electronics Equipment. Includes
special three conductor ac line cord, covers, feet, tilt
stand,trim, and U.L. label.
Designed to provide full CRT shield. Uses the standard
CRT shield (MP3) plus a special CRT front shield. This
option is not available for instruments with serial prefix
numbers below 1540A.
Clear CRT Filter.
Clear RFI coated surface and a metalized front panel.
Special CRT for high uniformity of light output. CRT
light output within 8.35 cm (3.3 in.) dia. circle varies by
no more than 10%.
Display shipped with special covers, feet, trim, and tilt
stand to meet CSA standards.
Standard instrument shipped with two Operating and
Service Manuals.
NOTE
For cathode-ray tube options see table 6-2.
Scans by ArtekMedia © 2008

Scans by ArtekMedia © 2008

Model 1332A
SECTION II
INSTALLATION
Installation
2-1. INTRODUCTION.
directly above each drawing is the part number for an
instrument power cord equipped with a connector of
2-2. This section contains information and instruc- that configuration.If theappropriatepower cord isnot
tions necessary for installing the Model 1332A. included with the instrument, notify the nearest HP
Included are initial inspection procedures, power Sales/Service Office and a replacement cord will be
requirements, systems application information, and provided.
instructions for repacking for shipment.
2-3. INITIAL INSPECTION.
2-4. This instrument was carefully inspected both
mechanically andelectricallybeforeshipment.Itshould
be free of mars or scratches and in perfect electrical
order upon receipt. To confirm this, the instrument
should be inspected for physical damage incurred in
transit. If theinstrument wasdamagedintransit,filea
claim with the carrier. Check for su~pliedaccessories
(paragraph 1-8)and test the electrical performance of
the instrument using the performance test procedures
outlined in Section
V. If there is damage or deficiency,
see the warranty in the front of this manual.
2-5. POWER REQUIREMENTS.
2-6. The 1332A operates from any power source sup-
plying 100, 120, 220, or 240 Vac (+5%-lo%), single
phase, 48 Hz to 440 Hz thatcan deliver approximately
50 VA of power.
2-10. SYSTEM APPLICATIONS. This instrument is
designed andmanufactured primarilyforOEMsystems
and is shipped without protective covers.
WARNING
a
Operator protection from hazardous volt-
ages within the instrument must be pro-
vided by the system in which the instru-
ment is to be used.
2-11. REPACKING FOR SHIPMENT.
2-12. If the instrument is to be shipped to a Hewlett-
Packard Sales/Service Office for service or repair,
attach a tag showing owner (with address),complete
instrument serial number, and a description of the
service required.
2-7. The instrument is normally shipped from the 2-13. Use the original shipping carton and packing
factory set to operate at 120Vac. To operate from any material. If the original packing material is not avail-
of the other sources, proceed asfollows: able, the Hewlett-Packard Sales/Service Office will
provide informationandrecommendationsonmaterials
a. Remove power cord (if connected). to be used.
b. Set switch on rear panel to desired voltage.
c. For 220 Vac or 240 Vac, remove 0.75-ampere
8120-1692 8120-1369 8120-1703 8120-1538
fuse (HP Part No. 2110-0063)and replace with 0.375-
ampere fuse (HPPart No. 2110-0065).
d. Connect power cord.
2-8. POWER CORDS AND RECEPTACLES.
STD-B-2878
2-9. Figure 2-1 illustrates the standard configura-
tions used for HP power cords. The HP Part Number
Figure 2-1. Power Receptacles
2-1/(2-2blank)
Scans by ArtekMedia © 2008

Scans by ArtekMedia © 2008

Model 1332A
SECTION Ill
OPERATION
Operation
3-1. INTRODUCTION. c. Set power switch to ON. Power indicator lamp
should light.
3-2. This section contains information and instruc-
tions for operation of the HP Model 1332A Display.
It is an
X, Y, Z display with analog voltage input for
X-, Y-, and Z-axis controls. All signals must be A high-intensity display over an extended
externally supplied through rear-panel connectors. period will burn the CRT phosphor.
3-3. CONTROLS AND CONNECTORS.
3-4. The 1332A is intended for use as a general pur-
pose, graphic display. The X-gain,X-position, Y-gain,
Y-position, intensity, focus, astigmatism, and trace
align controls are accessible at the front of the instru-
ment.The 1332Acontrolsandconnectors areillustrated
and briefly described in figure 3-1.
The INTENSITY control will adjust dis-
play brightness from completely off (ccw)
to maximum brightness (cw). To avoid
damage to CRT phosphor, increase inten-
sity slowly until display brightness is ata
comfortable viewing level.
3-5. INSTRUMENT MODIFICATIONS.
3-6. Factory-installed modifications are available to
provide operational characteristics which differ from
standard instruments. These options are briefly de-
scribed in table 1-3. For additional information con-
cerning available options contact your nearest HP
Sales/Service Office.
3-7. PREOPERATIONALPROCEDURE.
3-8. Turn on and prepare the 1332A for operation as
follows:
a. Set INTENSITY fully counterclockwise.
d. Adjust INTENSITY control. Displaydotbright-
ness should vary from completely extinguished (full
ccw position) to acceptable viewing brightness ascon-
trol is turned cw. Adjust for comfortable viewing
brightness of display dot.
e. Adjust POSITION
$ control through its full
range. Display dot will move vertically on CRT, dis-
appearing from viewing area at either extreme of
control.
f. Adjust POSITION
4 b control through its full
range. Display dot will move horizontally across CRT,
disappearing from viewing area at either extreme of
control.
g. Set horizontal and vertical POSITION con-
trols to center display dot on CRT.
h. Set FOCUS and ASTIGMAT controls for
smallest, sharpest display dot.
i. Apply I-kHz, 1-volt, p-p signal to X INPUT
connector on rear panel of instrument.
j. Adjust TR ALIGN control to align trace hori-
zontally.
k. Set
X GAIN control for trace length of exactly
10divisions.
1. Connect 1-kHz,O.Bvolt, p-p signal to YINPUT
connector on rear panel of instrument.
b. Sethorizontal andvertical POSITION controls m. Adjust Y GAIN control for trace length of
to midrange. exactly
8 divisions.
Scans by ArtekMedia © 2008

Operation Model 1332A
1. ASTIGMAT. Adjusts roundness of writing spot.
2. INTENSITY. Controls brightness of display.
3.
FOCUS. Adjusts writing spot for sharpness.
4. POSITION4 b. Adjusts trace position horizontally.
5. POSITION $ . Adjusts trace position vertically.
6. SCALE ILLUM. Controls brightness of CRT grati-
cule (Option 325 only).
7. Power Indicator. Illuminates when ac power is
applied to instrument.
8.
Y GAIN. Adjusts Y-amplifier gain.
1332A-L-002
CHANGED 4-76
X GAIN. Adjusts X-amplifier gain.
TR ALIGN. Aligns trace with graticule line.
X AMPLIFIER + -. X-axisinput.
Y AMPLIFIER + -. Y-axis input.
Z AMPLIFIER. Z-axisinput.
Ac power input connector.
Line fuse.
ONIOFF switch. Applies ac power to instrument.
LINE VOLTAGE SELECT. Selects line voltage for
100, 120,220, or 240 Vac operation.
Figure 3-1. Controls and Connectors
Scans by ArtekMedia © 2008

Model 1332A
SECTION IV
PRINCIPLES OF OPERATION
Theory
4-1. INTRODUCTION. WARNING
4-2. This section contains functional descriptions of
the 1332Akeyed to anoverallblock diagram(figure8-3).
u
The filament potential is connected to the
-4000 Vdc cathode potential which is
4-3. CIRCUIT DISCUSSION. dangerous to life.
4-4. LOW-VOLTAGE POWER SUPPLY (LVPS). The
LVPS provides regulated +15 V, -15 V and +lo0 V
operating voltages. It also provides +26V unregulated
for the high voltage oscillator.
4-5. The +15 V and -15 V supplies function in the
same manner and only the +15V supply will be dis-
cussed. Line voltage from the secondary of T1 is
rectified by diode bridge AlCR8 thru AlCRll and
filtered by AlC14. The +26 V unregulated is applied
to series regulator Q4 through a 1-amperefuse.
4-6. The output voltage is sensed by AIR48 and
AIR49 and compared to a reference voltage generated
by AlU1. AlUlthen drives Q1 to maintain thevoltage
at AlUl pin 2 equal to the reference voltage at AlUl
pin 3. AIR47 acts as a current sensor. AIR45 and
AIR46 convert the current to a voltage at pin 10 and
limits the drive to Q1. AIR44 compensates for tem-
perature drift.
4-7. The +I00 V supply operates similarly to the
+15V supply with the following exception. A reference
voltage, developed at
A1U3 pin 4 is applied through a
divider network (AlR61/AlR62) to the non-inverting
input of A1U3 (pin 3). Another divider network
AlR59/AlR60 samples the output voltage and applies
it to the inverting input of A1U3 (pin 2). The output
of A1U3 (pin 6) drives Q3 to maintain a voltage at
A1U3 pin 2 equal to that applied to A1U3 pin 3.
4-8. AlR58, AlQ14, and AlVR8 form a protection
circuit for AlU3. The circuit protects against large
input-output differential voltages if the output should
become grounded. AlVR3 and AlVR4 act ascrowbar
for the +110-Voutput by creating a temporary high
overload during initial turn on.
4-9. HIGH-VOLTAGE POWER SUPPLY (HVPS). High
voltage oscillator Q4 generates a sine-wave voltage
signal across the primary of TI.The amplified signalis
rectified by A3CR1 and filtered by A3C1, A3C2, and
A3R2 to generate the -4000 Vdc cathode voltage.
CRT filament voltage is generated by a sinusoidal
signal from a secondary winding of T1and isimposed
on the cathode potential of -4000 Vdc.
4-10. The cathode voltage is sampled by feedback
network A3C3/A3R4, compared with a reference
current established by high-voltageadjustAlR84, and
fed into regulator AlU4. The output of A1U4 regulates
the dc level of T1 base primary winding that drives
high voltage oscillator Q4 and maintains the cathode
voltage at -4000 V.
4-11. Grid voltage is provided by generating a bias
voltage with respect to the cathode voltage. This bias
voltage is generated by a capacitively coupled, clipped
sine-wave signal at the junction of A3C4 and A3C5.
The upper clipping level is setby Int Limit Adj AlR76.
The lower clipping level is set by the Z-axis dc output.
4-12. Focus voltage is determined by a resistive
divider string including Focus Lim control A3R13and
front-panel Focus control A5R4. Post-accelerator
potential of approximately +18 kV is supplied by
voltage sextupler assembly A6.
4-13. DEFLECTION AMPLIFIERS. Since the X- and Y-
axis amplifiers are identical, only the X-axis ampli-
fier will be discussed.
4-14. The instrument, as shipped from the factory,
is wired for single-ended input operation. Internal
design, however, allows for differential operation
(schematic 2).
4-15. An input signal is applied to A2Q16 which is
a source follower impedance converter. Differential
shunt feedback amplifier, A2Q17-A2Q20, provides a
signal gain governed by X-GAIN adjust A2R55.
X
GAIN CTR adjust A2R68 sets the voltage level about
which A2R55 varies.
4-16. Two balanced feedback amplifiers, A2Q23/
A2Q24/A2Q27/AZQ28 and A2&25/AZQ26/A2Q29/
A2Q30 comprise the output operational amplifier. A
current input to the output amplifier results in a volt-
age output which drives the horizontal deflection
plates. High-frequency adjustments A2C27 with
A2R75 and A2C28 with A2R76 (lead networks), and
A2R74 with A2C26 (lag network) provide the built-
in rise time of less than 70 nanoseconds.
Scans by ArtekMedia © 2008

Theory Model 1332A
4-17. Z-AXIS AMPLIFIER. The high-voltage supply amplifier output voltage increases conduction of the
for the CRT control grid is returned to, and controlled CRT and brightens the display.
by, the Z-axis amplifier gate output (schematics 3 and 4-18. Single-ended output of operational amplifier
5). Signal control for the Z-axis amplifier is applied AlQ10-AlQ13 is coupled to the high-voltage circuit
to rear-panel Z AMPLIFIER connector, and current is A3Rll/A3C7. This output maintains a level of ap-
supplied by the INTENSITY control.
A positive-going proximately -4000 volts on the CRT control grid.
Scans by ArtekMedia © 2008

Model 1332A
SEC'I'ION V
PERFORMANCECHECK AND ADJUSTMENTS
Performance Check
5-1. INTRODUCTION.
WARNING
u
Read the Safety Summary at the front
of this manual before installing or oper-
ating the instrument.
5-2. This section contains performance checks and
adjustment procedures. The performance checks
verify that the instrument meets its published spec-
ifications (table 1-1). Adjustment procedures are
provided to help maintain the instrument within spec-
ification limits.
5-3. RECOMMENDED'TEST EQUIPMENT.
5-4. Equipment required for the performance checks
and adjustment procedures is listed in table 5-1. Any
equipment that satisfies the critical characteristics
given in the table may be substituted for the recom-
mended modells).
5-5. PERFORMANCE CHECK RECORD.
5-6. A Performance Check Record form is provided
at the end of this section for the purpose of re-
cording the results of the performance checks. This
form lists all of the performance checks and their
acceptable limits. The form may be removed from the
manual and retained as a permanent record of thein-
coming inspection or routine maintenance performed
on the instrument.
5-7. PERFORMANCECHECKS.
5-8. The performance checks are designed to verify
the published instrument specifications. Perform the
checks in the sequence given for best results.
5-9. During all tests, install BNC shorting caps (HP
Part No. 1250-0645)on all unused inputs. For options
with differential inputs, use the
+X-, +Y-, or n
2-input connector unless indicated otherwise.
Standard instruments are shipped with-
out covers. Operator protection must
be provided by the system in which the
instrument is used since dangerous
voltages are present in the instrument.
5-10. The position of a trace on the CRT always
refers to the center of the trace. The distance between
traces always refers to the orthogonal distance from
trace center; or, from the edge of one trace to the
corresponding edge of the other trace.
5-11. DEFLECTION AMPLIFIER RISE TIME. Rise
time, measured between 10% and 90% points on the
displayed waveform, shall be equal to or less than
the value shown in table 5-2 for both
X and Y
amplifiers.
Equipment Required:
Pulse Generator (HPModel 8012B)
Monitor Oscilloscope
Two 10:l Divider Probes
44-in.BNC Cable
5-12. Check deflection amplifier rise time as follows:
a. Connect equipment as shown in figure 5-1.
b. Set pulse generator output asfollows:
Standard
. . ... . . . . . . ... . ..
1 V p-p, 100kHz
Option 100.
.. . ..... . .. . . ..
5 V p-p, 100 kHz
Option 101.
. . .. . . . . . . . . .. 10 V p-p, 100kHz
c. Set
X GAIN and X POSITION controls for full-
screen deflection with one dot on first graticule
line and other dot on last graticule line.
d. Set monitor oscilloscope to A-B MODE and
measure rise time between 10%and 90%points (dotted
lines on CRT).
e. Rise time shall be less than value shown in
table 5-2for applicable instrument.
f. Disconnect pulse generator from X AMPLI-
FIER input connector and connect to
Y AMPLIFIER
input connector.
g. Disconnect probes from horizontal deflection
plates and connect to vertical deflection plates.
h. Repeat steps
b through e.
i. For option 106repeat steps b through e for -X
and -Y inputs.
j. Disconnect test equipment.
Scans by ArtekMedia © 2008